74 files changed, 3115 insertions, 1604 deletions

diff --git a/src/.gdbinit b/src/.gdbinit
index c0a1bbfffd8..de980c6345f 100644
--- a/src/.gdbinit
+++ b/src/.gdbinit
@@ -18,9 +18,9 @@
 # Boston, MA 02110-1301, USA.
 
 # Force loading of symbols, enough to give us VALBITS etc.
-set main
+set $dummy = main + 8
 # With some compilers, we need this to give us struct Lisp_Symbol etc.:
-set Fmake_symbol
+set $dummy = Fmake_symbol + 8
 
 # Find lwlib source files too.
 dir ../lwlib
@@ -89,7 +89,7 @@ define pp
   set $tmp = $arg0
   set $output_debug = print_output_debug_flag
   set print_output_debug_flag = 0
-  set safe_debug_print ($tmp)
+  call safe_debug_print ($tmp)
   set print_output_debug_flag = $output_debug
 end
 document pp
@@ -102,7 +102,7 @@ define pv
   set $tmp = "$arg0"
   set $output_debug = print_output_debug_flag
   set print_output_debug_flag = 0
-  set safe_debug_print (find_symbol_value (intern ($tmp)))
+  call safe_debug_print (find_symbol_value (intern ($tmp)))
   set print_output_debug_flag = $output_debug
 end
 document pv
@@ -1162,7 +1162,7 @@ end
 define xwhichsymbols
   set $output_debug = print_output_debug_flag
   set print_output_debug_flag = 0
-  set safe_debug_print (which_symbols ($arg0, $arg1))
+  call safe_debug_print (which_symbols ($arg0, $arg1))
   set print_output_debug_flag = $output_debug
 end
 document xwhichsymbols
diff --git a/src/ChangeLog b/src/ChangeLog
index 72a11c177c4..c43404fa438 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,368 @@
+2012-08-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * fontset.c (FONTSET_ADD): Return void, not Lisp_Object.
+        Otherwise, the compiler complains about (A?B:C) where B is void
+        and C is Lisp_Object.  This fixes an incompatibility with Sun C 5.12.
+        (fontset_add): Return void, for FONTSET_ADD.
+
+2012-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * alloc.c: Use bool for booleans.
+        (gc_in_progress, abort_on_gc)
+        (setjmp_tested_p) [!GC_SAVE_REGISTERS_ON_STACK && !GC_SETJMP_WORKS]:
+        (dont_register_blocks) [GC_MALLOC_CHECK]:
+        (suppress_checking) [ENABLE_CHECKING]: Now bool, not int.
+        (check_string_bytes, make_specified_string, memory_full)
+        (live_string_p, live_cons_p, live_symbol_p, live_float_p)
+        (live_misc_p, live_vector_p, live_buffer_p, mark_maybe_object)
+        (mark_stack, valid_pointer_p, make_pure_string)
+        (Fgarbage_collect, survives_gc_p, gc_sweep):
+        Use bool for booleans, instead of int.
+        (test_setjmp) [!GC_SAVE_REGISTERS_ON_STACK && !GC_SETJMP_WORKS]:
+        Remove unused local.
+        * alloc.c (PURE_POINTER_P):
+        * lisp.h (STRING_MULTIBYTE): Document that it returns a boolean.
+        * editfns.c (Fformat):
+        * fileio.c (Fexpand_file_name, Fsubstitute_in_file_name)
+        (Fdo_auto_save):
+        * fns.c (sweep_weak_table):
+        * lisp.h (suppress_checking, push_message, survives_gc_p)
+        (make_pure_string, gc_in_progress, abort_on_gc):
+        * lread.c (readchar, read1):
+        * print.c (Fprin1_to_string):
+        * xdisp.c (push_message):
+        Use bool for booleans affected directly or indirectly by
+        alloc.c's changes.
+
+        Make recently-introduced setters macros.
+        * fontset.c (set_fontset_id, set_fontset_name, set_fontset_ascii)
+        (set_fontset_base, set_fontset_frame, set_fontset_nofont_face)
+        (set_fontset_default, set_fontset_fallback): Rename from their
+        upper-case counterparts, and make them functions rather than macros.
+        This is more consistent with the other recently-introduced setters.
+        These don't need to be inline, since they're local.
+
+2012-08-21  Jan Djärv  <jan.h.d@swipnet.se>
+
+        * nsterm.m (fd_handler:): Alloc and release a NSAutoreleasePool in
+        the loop (Bug#12247).
+
+2012-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * lisp.h (vcopy): Use memcpy rather than our own loop.
+        This fixes a performance regression introduced by the recent
+        addition of vcopy.  This means 'vcopy' will need to be modified
+        for a copying collector, but that's OK.  Also, tighten the
+        checking in the assertion.
+
+2012-08-21  Eli Zaretskii  <eliz@gnu.org>
+
+        * w32uniscribe.c (uniscribe_shape): Fix producing gstring
+        components for RTL text (Bug#11860).  Adjust X-OFFSET of each
+        non-base glyph for the width of the base character, according to
+        what x_draw_composite_glyph_string_foreground expects.  Generate
+        WADJUST value according to composition_gstring_width's
+        expectations, to produce correct width of the composed character.
+        Reverse the sign of the DU offset produced by ScriptPlace.
+
+2012-08-21  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * dbusbind.c (xd_remove_watch): Do not assume C99 comments.
+
+2012-08-21  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Avoid direct writes to contents member of struct Lisp_Vector.
+        * lisp.h (vcopy): New function to copy data into vector.
+        * dispnew.c (Fframe_or_buffer_changed_p): Use AREF and ASET.
+        * fns.c (Ffillarray): Use ASET.
+        * keyboard.c (timer_check_2): Use AREF and ASET.
+        (append_tool_bar_item, Frecent_keys): Use vcopy.
+        * lread.c (read_vector): Use ASET.
+        * msdos.c (Frecent_doskeys): Use vcopy.
+        * xface.c (Finternal_copy_lisp_face): Use vcopy.
+        (Finternal_merge_in_global_face): Use ASET and vcopy.
+        * xfont.c (xfont_list_pattern): Likewise.
+
+2012-08-21  Martin Rudalics  <rudalics@gmx.at>
+
+        * window.c (Fwindow_point): For the selected window always return
+        the position of its buffer's point.
+        (Fset_window_point): For the selected window always go in its
+        buffer to the specified position.
+
+2012-08-21  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Setter macros for fontsets.
+        * fontset.c (SET_FONTSET_ID, SET_FONTSET_NAME, SET_FONTSET_ASCII)
+        (SET_FONTSET_BASE, SET_FONTSET_FRAME, SET_FONTSET_NOFONT_FACE)
+        (SET_FONTSET_DEFAULT, SET_FONTSET_FALLBACK): New macros.
+        Adjust users.
+
+2012-08-20  Glenn Morris  <rgm@gnu.org>
+
+        * Makefile.in (emacs$(EXEEXT), bootstrap-emacs$(EXEEXT)):
+        Don't assume that `ln -f' works.
+
+2012-08-20  Eli Zaretskii  <eliz@gnu.org>
+
+        * .gdbinit: Use "set $dummy = ..." to avoid warnings from GDB 7.5
+        and later about non-assignments with no effect.  See discussion at
+        http://sourceware.org/ml/gdb-patches/2012-08/msg00518.html for
+        details.
+
+2012-08-20  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Inline setter functions for Lisp_Objects slots of struct specbinding.
+        * eval.c (set_specpdl_symbol, set_specpdl_old_value): New functions.
+        Adjust users.
+
+2012-08-20  Martin Rudalics  <rudalics@gmx.at>
+
+        * window.c (select_window): Always make selected window's buffer
+        current.
+
+2012-08-20  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Use AREF and ASET for docstrings of category tables.
+        * category.h (CATEGORY_DOCSTRING): Use AREF.
+        (SET_CATEGORY_DOCSTRING): Use ASET.
+        * category.c (Fdefine_category): Use SET_CATEGORY_DOCSTRING.
+
+2012-08-20  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Inline setter functions for hash table members.
+        * lisp.h (set_hash_key, set_hash_value, set_hash_next)
+        (set_hash_hash, set_hash_index): Rename with _slot suffix.
+        (set_hash_key_and_value, set_hash_index, set_hash_next)
+        (set_hash_hash): New functions.
+        * charset.c, fns.c: Adjust users.
+
+2012-08-20  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Inline getter and setter functions for per-buffer values.
+        * buffer.h (per_buffer_default, set_per_buffer_default)
+        (per_buffer_value, set_per_buffer_value): New functions.
+        (PER_BUFFER_VALUE, PER_BUFFER_DEFAULT): Remove.
+        * buffer.c, data.c: Adjust users.
+
+2012-08-20  Juanma Barranquero  <lekktu@gmail.com>
+
+        * makefile.w32-in ($(BLD)/vm-limit.$(O)): Update dependencies.
+
+2012-08-19  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Rely on <config.h> + <unistd.h> to declare 'environ',
+        as gnulib does this if the system doesn't.
+        * callproc.c, editfns.c, process.c (environ) [!USE_CRT_DLL]:
+        Remove declaration.  MS-Windows declares it on stdlib.h which is
+        included by conf_post.h.
+        * emacs.c (environ) [DOUG_LEA_MALLOC]:
+        * vm-limit.c (environ) [ORDINARY_LINK]: Remove decl.
+        * vm-limit.c: Include <unistd.h>, for 'environ'.
+
+        * unexaix.c, unexcoff.c: Include "mem-limits.h".
+        (start_of_data): Remove decl; mem-limits.h provides it.
+
+        * xdisp.c (handle_invisible_prop): Make it a bit faster
+        and avoid a gcc -Wmaybe-uninitialized diagnostic.
+
+2012-08-19  Chong Yidong  <cyd@gnu.org>
+
+        * xdisp.c (handle_invisible_prop): Fix ellipses at overlay string
+        ends (Bug#3874).
+
+2012-08-19  Andreas Schwab  <schwab@linux-m68k.org>
+
+        * .gdbinit: Use call instead of set when calling a function in the
+        inferior.
+
+        * data.c (set_internal): Don't use set_blv_found.
+        (Fkill_local_variable): Likewise.
+
+2012-08-18  Alp Aker  <alp.tekin.aker@gmail.com>
+
+        * nsfont.m (ns_ascii_average_width): Ensure the string
+        ascii_printable is initialized with a null-terminated character
+        array.  Otherwise, it can contain undesired extra characters.
+
+2012-08-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+        port new setting code to Sun C 5.8 2005/10/13
+        * chartab.c, lisp.h (char_table_set, char_table_set_range):
+        Return void, not Lisp_Object.  Otherwise, the compiler
+        complains about (A?B:C) where B is void and C is Lisp_Object
+        when compiling CHAR_TABLE_SET, due to the recent change to
+        the API of sub_char_table_set_contents.
+
+2012-08-18  Chong Yidong  <cyd@gnu.org>
+
+        * xdisp.c (handle_invisible_prop): Obey TEXT_PROP_MEANS_INVISIBLE
+        for the string case (Bug#3874).
+
+2012-08-18  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * buffer.h (BSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        (bset_bidi_paragraph_direction, bset_case_canon_table)
+        (bset_case_eqv_table, bset_directory, bset_display_count)
+        (bset_display_time, bset_downcase_table)
+        (bset_enable_multibyte_characters, bset_filename, bset_keymap)
+        (bset_last_selected_window, bset_local_var_alist)
+        (bset_mark_active, bset_point_before_scroll, bset_read_only)
+        (bset_truncate_lines, bset_undo_list, bset_upcase_table)
+        (bset_width_table):
+        * buffer.c (bset_abbrev_mode, bset_abbrev_table)
+        (bset_auto_fill_function, bset_auto_save_file_format)
+        (bset_auto_save_file_name, bset_backed_up, bset_begv_marker)
+        (bset_bidi_display_reordering, bset_buffer_file_coding_system)
+        (bset_cache_long_line_scans, bset_case_fold_search)
+        (bset_ctl_arrow, bset_cursor_in_non_selected_windows)
+        (bset_cursor_type, bset_display_table, bset_extra_line_spacing)
+        (bset_file_format, bset_file_truename, bset_fringe_cursor_alist)
+        (bset_fringe_indicator_alist, bset_fringes_outside_margins)
+        (bset_header_line_format, bset_indicate_buffer_boundaries)
+        (bset_indicate_empty_lines, bset_invisibility_spec)
+        (bset_left_fringe_width, bset_major_mode, bset_mark)
+        (bset_minor_modes, bset_mode_line_format, bset_mode_name)
+        (bset_name, bset_overwrite_mode, bset_pt_marker)
+        (bset_right_fringe_width, bset_save_length)
+        (bset_scroll_bar_width, bset_scroll_down_aggressively)
+        (bset_scroll_up_aggressively, bset_selective_display)
+        (bset_selective_display_ellipses, bset_vertical_scroll_bar_type)
+        (bset_word_wrap, bset_zv_marker):
+        * category.c (bset_category_table):
+        * syntax.c (bset_syntax_table):
+        New setter functions.
+
+        * process.h (PSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        Use INLINE_HEADER_BEGIN, INLINE_HEADER_END.
+        (PROCESS_INLINE): New macro.
+        (pset_childp): New setter function.
+        (pset_gnutls_cred_type) [HAVE_GNUTLS]: New setter function.
+        * process.c (PROCESS_INLINE):
+        Define to EXTERN_INLINE, so that the corresponding functions
+        are compiled into code.
+        (pset_buffer, pset_command, pset_decode_coding_system)
+        (pset_decoding_buf, pset_encode_coding_system)
+        (pset_encoding_buf, pset_filter, pset_log, pset_mark, pset_name)
+        (pset_plist, pset_sentinel, pset_status, pset_tty_name)
+        (pset_type, pset_write_queue): New setter functions.
+
+        * window.h (WSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        Use INLINE_HEADER_BEGIN, INLINE_HEADER_END.
+        (WINDOW_INLINE): New macro.
+        (wset_buffer, wset_frame, wset_left_col, wset_next, wset_prev)
+        (wset_redisplay_end_trigger, wset_top_line, wset_total_cols)
+        (wset_total_lines, wset_vertical_scroll_bar)
+        (wset_window_end_pos, wset_window_end_valid)
+        (wset_window_end_vpos): New setter functions.
+        * window.c (WINDOW_INLINE):
+        Define to EXTERN_INLINE, so that the corresponding functions
+        are compiled into code.
+        (wset_combination_limit, wset_dedicated, wset_display_table)
+        (wset_hchild, wset_left_fringe_width, wset_left_margin_cols)
+        (wset_new_normal, wset_new_total, wset_next_buffers)
+        (wset_normal_cols, wset_normal_lines, wset_parent, wset_pointm)
+        (wset_prev_buffers, wset_right_fringe_width)
+        (wset_right_margin_cols, wset_scroll_bar_width, wset_start)
+        (wset_temslot, wset_vchild, wset_vertical_scroll_bar_type)
+        (wset_window_parameters):
+        * xdisp.c (wset_base_line_number, wset_base_line_pos)
+        (wset_column_number_displayed, wset_region_showing):
+        New setter functions.
+
+        * termhooks.h (TSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        Use INLINE_HEADER_BEGIN, INLINE_HEADER_END.
+        (TERMHOOKS_INLINE): New macro.
+        (tset_charset_list, tset_selection_alist): New setter functions.
+        * terminal.c (TERMHOOKS_INLINE):
+        Define to EXTERN_INLINE, so that the corresponding functions
+        are compiled into code.
+        (tset_param_alist): New setter function.
+
+2012-08-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+        * keyboard.h (KSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        Use INLINE_HEADER_BEGIN, INLINE_HEADER_END.
+        (KEYBOARD_INLINE): New macro.
+        (kset_default_minibuffer_frame, kset_defining_kbd_macro)
+        (kset_input_decode_map, kset_last_command, kset_last_kbd_macro)
+        (kset_prefix_arg, kset_system_key_alist, kset_window_system):
+        New setter functions.
+        * keyboard.c (KEYBOARD_INLINE):
+        Define to EXTERN_INLINE, so that the corresponding functions
+        are compiled into code.
+        (kset_echo_string, kset_kbd_queue)
+        (kset_keyboard_translate_table, kset_last_prefix_arg)
+        (kset_last_repeatable_command, kset_local_function_key_map)
+        (kset_overriding_terminal_local_map, kset_real_last_command)
+        (kset_system_key_syms): New setter functions.
+
+        * frame.h (FSET): Remove (Bug#12215).
+        Replace all uses with calls to new setter functions.
+        Use INLINE_HEADER_BEGIN, INLINE_HEADER_END.
+        (FRAME_INLINE): New macro.
+        (fset_buffer_list, fset_buried_buffer_list, fset_condemned_scroll_bars)
+        (fset_current_tool_bar_string, fset_desired_tool_bar_string)
+        (fset_face_alist, fset_focus_frame, fset_icon_name, fset_menu_bar_items)
+        (fset_menu_bar_vector, fset_menu_bar_window, fset_name)
+        (fset_param_alist, fset_root_window, fset_scroll_bars)
+        (fset_selected_window, fset_title, fset_tool_bar_items)
+        (fset_tool_bar_position, fset_tool_bar_window): New functions.
+        * frame.c (FRAME_INLINE):
+        Define to EXTERN_INLINE, so that the corresponding functions
+        are compiled into code.
+        (fset_buffer_predicate, fset_minibuffer_window): New setter functions.
+
+        A few more naming-convention fixes for getters and setters.
+        * buffer.c (set_buffer_overlays_before): Move here from buffer.h,
+        and rename from buffer_overlays_set_before.
+        (set_buffer_overlays_after): Move here from buffer.h, and rename
+        from buffer_overlays_set_after.
+        * buffer.h (buffer_intervals): Rename from buffer_get_intervals.
+        All uses changed.
+        (set_buffer_intervals): Rename from buffer_set_intervals.
+        * intervals.c (set_interval_object): Move here from intervals.h,
+        and rename from interval_set_object.
+        (set_interval_left): Move here from intervals.h, and rename from
+        interval_set_left.
+        (set_interval_right): Move here from intervals.h, and rename from
+        interval_set_right.
+        (copy_interval_parent): Move here from intervals.h, and rename from
+        interval_copy_parent.
+        * intervals.h (set_interval_parent): Rename from interval_set_parent.
+        (set_interval_plist): Rename from interval_set_plist.
+        Return void, not Lisp_Object, since no caller uses the result.
+        * lisp.h (string_intervals): Rename from string_get_intervals.
+        (set_string_intervals): Rename from string_set_intervals.
+
+        * lisp.h (set_char_table_extras): Rename from char_table_set_extras.
+        (set_char_table_contents): Rename from char_table_set_contents.
+        (set_sub_char_table_contents): Rename from sub_char_table_set_contents.
+        All uses changed.  See the end of
+        <http://lists.gnu.org/archive/html/emacs-devel/2012-08/msg00549.html>.
+
+        * lisp.h (CSET): Remove (Bug#12215).
+        (set_char_table_ascii, set_char_table_defalt, set_char_table_parent)
+        (set_char_table_purpose): New functions,
+        replacing CSET.  All uses changed.  For example, replace
+        "CSET (XCHAR_TABLE (char_table), parent, parent);" with
+        "set_char_table_parent (char_table, parent);".
+        The old version was confusing because it used the same name
+        'parent' for two different things.
+
+2012-08-17  Dmitry Antipov  <dmantipov@yandex.ru>
+
+        Functions to get and set Lisp_Object fields of buffer-local variables.
+        * lisp.h (blv_found, set_blv_found, blv_value, set_blv_value)
+        (set_blv_where, set_blv_defcell, set_blv_valcell): New functions.
+        (BLV_FOUND, SET_BLV_FOUND, BLV_VALUE, SET_BLV_VALUE): Remove.
+        * data.c, eval.c, frame.c: Adjust users.
+
 2012-08-17  Chong Yidong  <cyd@gnu.org>
 
         * xfaces.c (merge_face_vectors): If the target font specfies a
diff --git a/src/Makefile.in b/src/Makefile.in
index 4b1520ada62..1d89af31401 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -402,11 +402,13 @@ $(leimdir)/leim-list.el: bootstrap-emacs$(EXEEXT)
 ## on all of $lisp, and emacs depends on DOC, so it is ok to use $lisp here.
 emacs$(EXEEXT): temacs$(EXEEXT) $(etc)/DOC $(lisp) $(leimdir)/leim-list.el
         if test "$(CANNOT_DUMP)" = "yes"; then \
-          ln -f temacs$(EXEEXT) emacs$(EXEEXT); \
+          rm -f emacs$(EXEEXT); \
+          ln temacs$(EXEEXT) emacs$(EXEEXT); \
         else \
           LC_ALL=C $(RUN_TEMACS) -batch -l loadup dump || exit 1; \
           test "X$(PAXCTL)" = X || $(PAXCTL) -zex emacs$(EXEEXT); \
-          ln -f emacs$(EXEEXT) bootstrap-emacs$(EXEEXT); \
+          rm -f bootstrap-emacs$(EXEEXT); \
+          ln emacs$(EXEEXT) bootstrap-emacs$(EXEEXT); \
         fi
 
 ## We run make-docfile twice because the command line may get too long
@@ -600,7 +602,8 @@ $(lispsource)/loaddefs.el: $(BOOTSTRAPEMACS) $(VCSWITNESS)
 bootstrap-emacs$(EXEEXT): temacs$(EXEEXT)
         cd ../lisp; $(MAKE) $(MFLAGS) update-subdirs
         if test "$(CANNOT_DUMP)" = "yes"; then \
-          ln -f temacs$(EXEEXT) bootstrap-emacs$(EXEEXT); \
+          rm -f bootstrap-emacs$(EXEEXT); \
+          ln temacs$(EXEEXT) bootstrap-emacs$(EXEEXT); \
         else \
           $(RUN_TEMACS) --batch --load loadup bootstrap || exit 1; \
           test "X$(PAXCTL)" = X || $(PAXCTL) -zex emacs$(EXEEXT); \
diff --git a/src/alloc.c b/src/alloc.c
index 1d484d4a322..f0da9416ece 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -173,15 +173,15 @@ EMACS_INT gc_relative_threshold;
 
 EMACS_INT memory_full_cons_threshold;
 
-/* Nonzero during GC.  */
+/* True during GC.  */
 
-int gc_in_progress;
+bool gc_in_progress;
 
-/* Nonzero means abort if try to GC.
+/* True means abort if try to GC.
    This is for code which is written on the assumption that
    no GC will happen, so as to verify that assumption.  */
 
-int abort_on_gc;
+bool abort_on_gc;
 
 /* Number of live and free conses etc.  */
 
@@ -223,7 +223,7 @@ static ptrdiff_t pure_size;
 
 static ptrdiff_t pure_bytes_used_before_overflow;
 
-/* Value is non-zero if P points into pure space.  */
+/* True if P points into pure space.  */
 
 #define PURE_POINTER_P(P)                                       \
   ((uintptr_t) (P) - (uintptr_t) purebeg <= pure_size)
@@ -392,13 +392,13 @@ static struct mem_node mem_z;
 static struct Lisp_Vector *allocate_vectorlike (ptrdiff_t);
 static void lisp_free (void *);
 static void mark_stack (void);
-static int live_vector_p (struct mem_node *, void *);
-static int live_buffer_p (struct mem_node *, void *);
-static int live_string_p (struct mem_node *, void *);
-static int live_cons_p (struct mem_node *, void *);
-static int live_symbol_p (struct mem_node *, void *);
-static int live_float_p (struct mem_node *, void *);
-static int live_misc_p (struct mem_node *, void *);
+static bool live_vector_p (struct mem_node *, void *);
+static bool live_buffer_p (struct mem_node *, void *);
+static bool live_string_p (struct mem_node *, void *);
+static bool live_cons_p (struct mem_node *, void *);
+static bool live_symbol_p (struct mem_node *, void *);
+static bool live_float_p (struct mem_node *, void *);
+static bool live_misc_p (struct mem_node *, void *);
 static void mark_maybe_object (Lisp_Object);
 static void mark_memory (void *, void *);
 #if GC_MARK_STACK || defined GC_MALLOC_CHECK
@@ -1241,7 +1241,7 @@ static void (*old_free_hook) (void*, const void*);
 #endif
 
 #ifdef GC_MALLOC_CHECK
-static int dont_register_blocks;
+static bool dont_register_blocks;
 #endif
 
 static size_t bytes_used_when_reconsidered;
@@ -1828,11 +1828,11 @@ check_sblock (struct sblock *b)
 
 
 /* Check validity of Lisp strings' string_bytes member.  ALL_P
-   non-zero means check all strings, otherwise check only most
+   means check all strings, otherwise check only most
    recently allocated strings.  Used for hunting a bug.  */
 
 static void
-check_string_bytes (int all_p)
+check_string_bytes (bool all_p)
 {
   if (all_p)
     {
@@ -2437,9 +2437,9 @@ make_string_from_bytes (const char *contents,
 
 Lisp_Object
 make_specified_string (const char *contents,
-                       ptrdiff_t nchars, ptrdiff_t nbytes, int multibyte)
+                       ptrdiff_t nchars, ptrdiff_t nbytes, bool multibyte)
 {
-  register Lisp_Object val;
+  Lisp_Object val;
 
   if (nchars < 0)
     {
@@ -3094,7 +3094,7 @@ sweep_vectors (void)
 
   for (block = vector_blocks; block; block = *bprev)
     {
-      int free_this_block = 0;
+      bool free_this_block = 0;
 
       for (vector = (struct Lisp_Vector *) block->data;
            VECTOR_IN_BLOCK (vector, block); vector = next)
@@ -3753,7 +3753,7 @@ void
 memory_full (size_t nbytes)
 {
   /* Do not go into hysterics merely because a large request failed.  */
-  int enough_free_memory = 0;
+  bool enough_free_memory = 0;
   if (SPARE_MEMORY < nbytes)
     {
       void *p;
@@ -4246,7 +4246,7 @@ mem_delete_fixup (struct mem_node *x)
 /* Value is non-zero if P is a pointer to a live Lisp string on
    the heap.  M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_string_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_STRING)
@@ -4269,7 +4269,7 @@ live_string_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live Lisp cons on
    the heap.  M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_cons_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_CONS)
@@ -4295,7 +4295,7 @@ live_cons_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live Lisp symbol on
    the heap.  M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_symbol_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_SYMBOL)
@@ -4321,7 +4321,7 @@ live_symbol_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live Lisp float on
    the heap.  M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_float_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_FLOAT)
@@ -4345,7 +4345,7 @@ live_float_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live Lisp Misc on
    the heap.  M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_misc_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_MISC)
@@ -4371,7 +4371,7 @@ live_misc_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live vector-like object.
    M is a pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_vector_p (struct mem_node *m, void *p)
 {
   if (m->type == MEM_TYPE_VECTOR_BLOCK)
@@ -4407,7 +4407,7 @@ live_vector_p (struct mem_node *m, void *p)
 /* Value is non-zero if P is a pointer to a live buffer.  M is a
    pointer to the mem_block for P.  */
 
-static inline int
+static inline bool
 live_buffer_p (struct mem_node *m, void *p)
 {
   /* P must point to the start of the block, and the buffer
@@ -4487,7 +4487,7 @@ mark_maybe_object (Lisp_Object obj)
 
   if (m != MEM_NIL)
     {
-      int mark_p = 0;
+      bool mark_p = 0;
 
       switch (XTYPE (obj))
         {
@@ -4707,7 +4707,8 @@ mark_memory (void *start, void *end)
 
 #if !defined GC_SAVE_REGISTERS_ON_STACK && !defined GC_SETJMP_WORKS
 
-static int setjmp_tested_p, longjmps_done;
+static bool setjmp_tested_p;
+static int longjmps_done;
 
 #define SETJMP_WILL_LIKELY_WORK "\
 \n\
@@ -4751,7 +4752,6 @@ test_setjmp (void)
   char buf[10];
   register int x;
   jmp_buf jbuf;
-  int result = 0;
 
   /* Arrange for X to be put in a register.  */
   sprintf (buf, "1");
@@ -4891,7 +4891,7 @@ mark_stack (void)
     Lisp_Object o;
     jmp_buf j;
   } j;
-  volatile int stack_grows_down_p = (char *) &j > (char *) stack_base;
+  volatile bool stack_grows_down_p = (char *) &j > (char *) stack_base;
 #endif
   /* This trick flushes the register windows so that all the state of
      the process is contained in the stack.  */
@@ -4965,7 +4965,7 @@ valid_pointer_p (void *p)
 
   if (pipe (fd) == 0)
     {
-      int valid = (emacs_write (fd[1], (char *) p, 16) == 16);
+      bool valid = emacs_write (fd[1], (char *) p, 16) == 16;
       emacs_close (fd[1]);
       emacs_close (fd[0]);
       return valid;
@@ -5186,7 +5186,7 @@ find_string_data_in_pure (const char *data, ptrdiff_t nbytes)
 
 /* Return a string allocated in pure space.  DATA is a buffer holding
    NCHARS characters, and NBYTES bytes of string data.  MULTIBYTE
-   non-zero means make the result string multibyte.
+   means make the result string multibyte.
 
    Must get an error if pure storage is full, since if it cannot hold
    a large string it may be able to hold conses that point to that
@@ -5194,7 +5194,7 @@ find_string_data_in_pure (const char *data, ptrdiff_t nbytes)
 
 Lisp_Object
 make_pure_string (const char *data,
-                  ptrdiff_t nchars, ptrdiff_t nbytes, int multibyte)
+                  ptrdiff_t nchars, ptrdiff_t nbytes, bool multibyte)
 {
   Lisp_Object string;
   struct Lisp_String *s = pure_alloc (sizeof *s, Lisp_String);
@@ -5389,11 +5389,11 @@ returns nil, because real GC can't be done.
 See Info node `(elisp)Garbage Collection'.  */)
   (void)
 {
-  register struct specbinding *bind;
-  register struct buffer *nextb;
+  struct specbinding *bind;
+  struct buffer *nextb;
   char stack_top_variable;
   ptrdiff_t i;
-  int message_p;
+  bool message_p;
   ptrdiff_t count = SPECPDL_INDEX ();
   EMACS_TIME start;
   Lisp_Object retval = Qnil;
@@ -5836,7 +5836,7 @@ mark_buffer (struct buffer *buffer)
 
   /* ...but there are some buffer-specific things.  */
 
-  MARK_INTERVAL_TREE (buffer_get_intervals (buffer));
+  MARK_INTERVAL_TREE (buffer_intervals (buffer));
 
   /* For now, we just don't mark the undo_list.  It's done later in
      a special way just before the sweep phase, and after stripping
@@ -6090,7 +6090,7 @@ mark_object (Lisp_Object arg)
           }
         if (!PURE_POINTER_P (XSTRING (ptr->name)))
           MARK_STRING (XSTRING (ptr->name));
-        MARK_INTERVAL_TREE (string_get_intervals (ptr->name));
+        MARK_INTERVAL_TREE (string_intervals (ptr->name));
 
         ptr = ptr->next;
         if (ptr)
@@ -6208,10 +6208,10 @@ mark_terminals (void)
 /* Value is non-zero if OBJ will survive the current GC because it's
    either marked or does not need to be marked to survive.  */
 
-int
+bool
 survives_gc_p (Lisp_Object obj)
 {
-  int survives_p;
+  bool survives_p;
 
   switch (XTYPE (obj))
     {
@@ -6405,7 +6405,7 @@ gc_sweep (void)
           {
             if (!iblk->intervals[i].gcmarkbit)
               {
-                interval_set_parent (&iblk->intervals[i], interval_free_list);
+                set_interval_parent (&iblk->intervals[i], interval_free_list);
                 interval_free_list = &iblk->intervals[i];
                 this_free++;
               }
@@ -6456,7 +6456,7 @@ gc_sweep (void)
             /* Check if the symbol was created during loadup.  In such a case
                it might be pointed to by pure bytecode which we don't trace,
                so we conservatively assume that it is live.  */
-            int pure_p = PURE_POINTER_P (XSTRING (sym->s.name));
+            bool pure_p = PURE_POINTER_P (XSTRING (sym->s.name));
 
             if (!sym->s.gcmarkbit && !pure_p)
               {
@@ -6681,7 +6681,7 @@ which_symbols (Lisp_Object obj, EMACS_INT find_max)
 }
 
 #ifdef ENABLE_CHECKING
-int suppress_checking;
+bool suppress_checking;
 
 void
 die (const char *msg, const char *file, int line)
diff --git a/src/buffer.c b/src/buffer.c
index 56d6231f5f8..c900ef8c5a8 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -157,6 +157,228 @@ static struct Lisp_Overlay * copy_overlays (struct buffer *, struct Lisp_Overlay
 static void modify_overlay (struct buffer *, ptrdiff_t, ptrdiff_t);
 static Lisp_Object buffer_lisp_local_variables (struct buffer *, int);
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+bset_abbrev_mode (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (abbrev_mode) = val;
+}
+static inline void
+bset_abbrev_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (abbrev_table) = val;
+}
+static inline void
+bset_auto_fill_function (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (auto_fill_function) = val;
+}
+static inline void
+bset_auto_save_file_format (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (auto_save_file_format) = val;
+}
+static inline void
+bset_auto_save_file_name (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (auto_save_file_name) = val;
+}
+static inline void
+bset_backed_up (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (backed_up) = val;
+}
+static inline void
+bset_begv_marker (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (begv_marker) = val;
+}
+static inline void
+bset_bidi_display_reordering (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (bidi_display_reordering) = val;
+}
+static inline void
+bset_buffer_file_coding_system (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (buffer_file_coding_system) = val;
+}
+static inline void
+bset_cache_long_line_scans (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (cache_long_line_scans) = val;
+}
+static inline void
+bset_case_fold_search (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (case_fold_search) = val;
+}
+static inline void
+bset_ctl_arrow (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (ctl_arrow) = val;
+}
+static inline void
+bset_cursor_in_non_selected_windows (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (cursor_in_non_selected_windows) = val;
+}
+static inline void
+bset_cursor_type (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (cursor_type) = val;
+}
+static inline void
+bset_display_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (display_table) = val;
+}
+static inline void
+bset_extra_line_spacing (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (extra_line_spacing) = val;
+}
+static inline void
+bset_file_format (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (file_format) = val;
+}
+static inline void
+bset_file_truename (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (file_truename) = val;
+}
+static inline void
+bset_fringe_cursor_alist (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (fringe_cursor_alist) = val;
+}
+static inline void
+bset_fringe_indicator_alist (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (fringe_indicator_alist) = val;
+}
+static inline void
+bset_fringes_outside_margins (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (fringes_outside_margins) = val;
+}
+static inline void
+bset_header_line_format (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (header_line_format) = val;
+}
+static inline void
+bset_indicate_buffer_boundaries (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (indicate_buffer_boundaries) = val;
+}
+static inline void
+bset_indicate_empty_lines (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (indicate_empty_lines) = val;
+}
+static inline void
+bset_invisibility_spec (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (invisibility_spec) = val;
+}
+static inline void
+bset_left_fringe_width (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (left_fringe_width) = val;
+}
+static inline void
+bset_major_mode (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (major_mode) = val;
+}
+static inline void
+bset_mark (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (mark) = val;
+}
+static inline void
+bset_minor_modes (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (minor_modes) = val;
+}
+static inline void
+bset_mode_line_format (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (mode_line_format) = val;
+}
+static inline void
+bset_mode_name (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (mode_name) = val;
+}
+static inline void
+bset_name (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (name) = val;
+}
+static inline void
+bset_overwrite_mode (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (overwrite_mode) = val;
+}
+static inline void
+bset_pt_marker (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (pt_marker) = val;
+}
+static inline void
+bset_right_fringe_width (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (right_fringe_width) = val;
+}
+static inline void
+bset_save_length (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (save_length) = val;
+}
+static inline void
+bset_scroll_bar_width (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (scroll_bar_width) = val;
+}
+static inline void
+bset_scroll_down_aggressively (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (scroll_down_aggressively) = val;
+}
+static inline void
+bset_scroll_up_aggressively (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (scroll_up_aggressively) = val;
+}
+static inline void
+bset_selective_display (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (selective_display) = val;
+}
+static inline void
+bset_selective_display_ellipses (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (selective_display_ellipses) = val;
+}
+static inline void
+bset_vertical_scroll_bar_type (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (vertical_scroll_bar_type) = val;
+}
+static inline void
+bset_word_wrap (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (word_wrap) = val;
+}
+static inline void
+bset_zv_marker (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (zv_marker) = val;
+}
+
 /* For debugging; temporary.  See set_buffer_internal.  */
 /* Lisp_Object Qlisp_mode, Vcheck_symbol; */
 
@@ -360,7 +582,7 @@ even if it is dead.  The return value is never nil.  */)
   BUF_CHARS_MODIFF (b) = 1;
   BUF_OVERLAY_MODIFF (b) = 1;
   BUF_SAVE_MODIFF (b) = 1;
-  buffer_set_intervals (b, NULL);
+  set_buffer_intervals (b, NULL);
   BUF_UNCHANGED_MODIFIED (b) = 1;
   BUF_OVERLAY_UNCHANGED_MODIFIED (b) = 1;
   BUF_END_UNCHANGED (b) = 0;
@@ -370,7 +592,7 @@ even if it is dead.  The return value is never nil.  */)
 
   b->newline_cache = 0;
   b->width_run_cache = 0;
-  BSET (b, width_table, Qnil);
+  bset_width_table (b, Qnil);
   b->prevent_redisplay_optimizations_p = 1;
 
   /* Put this on the chain of all buffers including killed ones.  */
@@ -379,20 +601,20 @@ even if it is dead.  The return value is never nil.  */)
 
   /* An ordinary buffer normally doesn't need markers
      to handle BEGV and ZV.  */
-  BSET (b, pt_marker, Qnil);
-  BSET (b, begv_marker, Qnil);
-  BSET (b, zv_marker, Qnil);
+  bset_pt_marker (b, Qnil);
+  bset_begv_marker (b, Qnil);
+  bset_zv_marker (b, Qnil);
 
   name = Fcopy_sequence (buffer_or_name);
-  string_set_intervals (name, NULL);
-  BSET (b, name, name);
+  set_string_intervals (name, NULL);
+  bset_name (b, name);
 
-  BSET (b, undo_list, (SREF (name, 0) != ' ') ? Qnil : Qt);
+  bset_undo_list (b, SREF (name, 0) != ' ' ? Qnil : Qt);
 
   reset_buffer (b);
   reset_buffer_local_variables (b, 1);
 
-  BSET (b, mark, Fmake_marker ());
+  bset_mark (b, Fmake_marker ());
   BUF_MARKERS (b) = NULL;
 
   /* Put this in the alist of all live buffers.  */
@@ -439,6 +661,19 @@ copy_overlays (struct buffer *b, struct Lisp_Overlay *list)
   return result;
 }
 
+/* Set an appropriate overlay of B.  */
+
+static inline void
+set_buffer_overlays_before (struct buffer *b, struct Lisp_Overlay *o)
+{
+  b->overlays_before = o;
+}
+
+static inline void
+set_buffer_overlays_after (struct buffer *b, struct Lisp_Overlay *o)
+{
+  b->overlays_after = o;
+}
 
 /* Clone per-buffer values of buffer FROM.
 
@@ -460,7 +695,7 @@ clone_per_buffer_values (struct buffer *from, struct buffer *to)
       if (offset == PER_BUFFER_VAR_OFFSET (name))
         continue;
 
-      obj = PER_BUFFER_VALUE (from, offset);
+      obj = per_buffer_value (from, offset);
       if (MARKERP (obj) && XMARKER (obj)->buffer == from)
         {
           struct Lisp_Marker *m = XMARKER (obj);
@@ -469,17 +704,17 @@ clone_per_buffer_values (struct buffer *from, struct buffer *to)
           XMARKER (obj)->insertion_type = m->insertion_type;
         }
 
-      PER_BUFFER_VALUE (to, offset) = obj;
+      set_per_buffer_value (to, offset, obj);
     }
 
   memcpy (to->local_flags, from->local_flags, sizeof to->local_flags);
 
-  buffer_set_overlays_before (to, copy_overlays (to, from->overlays_before));
-  buffer_set_overlays_after (to, copy_overlays (to, from->overlays_after));
+  set_buffer_overlays_before (to, copy_overlays (to, from->overlays_before));
+  set_buffer_overlays_after (to, copy_overlays (to, from->overlays_after));
 
   /* Get (a copy of) the alist of Lisp-level local variables of FROM
      and install that in TO.  */
-  BSET (to, local_var_alist, buffer_lisp_local_variables (from, 1));
+  bset_local_var_alist (to, buffer_lisp_local_variables (from, 1));
 }
 
 
@@ -582,15 +817,15 @@ CLONE nil means the indirect buffer's state is reset to default values.  */)
 
   b->newline_cache = 0;
   b->width_run_cache = 0;
-  BSET (b, width_table, Qnil);
+  bset_width_table (b, Qnil);
 
   /* Put this on the chain of all buffers including killed ones.  */
   b->header.next.buffer = all_buffers;
   all_buffers = b;
 
   name = Fcopy_sequence (name);
-  string_set_intervals (name, NULL);
-  BSET (b, name, name);
+  set_string_intervals (name, NULL);
+  bset_name (b, name);
 
   reset_buffer (b);
   reset_buffer_local_variables (b, 1);
@@ -599,10 +834,11 @@ CLONE nil means the indirect buffer's state is reset to default values.  */)
   XSETBUFFER (buf, b);
   Vbuffer_alist = nconc2 (Vbuffer_alist, Fcons (Fcons (name, buf), Qnil));
 
-  BSET (b, mark, Fmake_marker ());
+  bset_mark (b, Fmake_marker ());
 
   /* The multibyte status belongs to the base buffer.  */
-  BSET (b, enable_multibyte_characters, BVAR (b->base_buffer, enable_multibyte_characters));
+  bset_enable_multibyte_characters
+    (b, BVAR (b->base_buffer, enable_multibyte_characters));
 
   /* Make sure the base buffer has markers for its narrowing.  */
   if (NILP (BVAR (b->base_buffer, pt_marker)))
@@ -610,14 +846,17 @@ CLONE nil means the indirect buffer's state is reset to default values.  */)
       eassert (NILP (BVAR (b->base_buffer, begv_marker)));
       eassert (NILP (BVAR (b->base_buffer, zv_marker)));
 
-      BSET (b->base_buffer, pt_marker,
-            build_marker (b->base_buffer, b->base_buffer->pt, b->base_buffer->pt_byte));
+      bset_pt_marker (b->base_buffer,
+                      build_marker (b->base_buffer, b->base_buffer->pt,
+                                    b->base_buffer->pt_byte));
 
-      BSET (b->base_buffer, begv_marker,
-            build_marker (b->base_buffer, b->base_buffer->begv, b->base_buffer->begv_byte));
+      bset_begv_marker (b->base_buffer,
+                        build_marker (b->base_buffer, b->base_buffer->begv,
+                                      b->base_buffer->begv_byte));
 
-      BSET (b->base_buffer, zv_marker,
-            build_marker (b->base_buffer, b->base_buffer->zv, b->base_buffer->zv_byte));
+      bset_zv_marker (b->base_buffer,
+                      build_marker (b->base_buffer, b->base_buffer->zv,
+                                    b->base_buffer->zv_byte));
 
       XMARKER (BVAR (b->base_buffer, zv_marker))->insertion_type = 1;
     }
@@ -625,9 +864,9 @@ CLONE nil means the indirect buffer's state is reset to default values.  */)
   if (NILP (clone))
     {
       /* Give the indirect buffer markers for its narrowing.  */
-      BSET (b, pt_marker, build_marker (b, b->pt, b->pt_byte));
-      BSET (b, begv_marker, build_marker (b, b->begv, b->begv_byte));
-      BSET (b, zv_marker, build_marker (b, b->zv, b->zv_byte));
+      bset_pt_marker (b, build_marker (b, b->pt, b->pt_byte));
+      bset_begv_marker (b, build_marker (b, b->begv, b->begv_byte));
+      bset_zv_marker (b, build_marker (b, b->zv, b->zv_byte));
       XMARKER (BVAR (b, zv_marker))->insertion_type = 1;
     }
   else
@@ -635,11 +874,11 @@ CLONE nil means the indirect buffer's state is reset to default values.  */)
       struct buffer *old_b = current_buffer;
 
       clone_per_buffer_values (b->base_buffer, b);
-      BSET (b, filename, Qnil);
-      BSET (b, file_truename, Qnil);
-      BSET (b, display_count, make_number (0));
-      BSET (b, backed_up, Qnil);
-      BSET (b, auto_save_file_name, Qnil);
+      bset_filename (b, Qnil);
+      bset_file_truename (b, Qnil);
+      bset_display_count (b, make_number (0));
+      bset_backed_up (b, Qnil);
+      bset_auto_save_file_name (b, Qnil);
       set_buffer_internal_1 (b);
       Fset (intern ("buffer-save-without-query"), Qnil);
       Fset (intern ("buffer-file-number"), Qnil);
@@ -688,8 +927,8 @@ delete_all_overlays (struct buffer *b)
       ov->next = NULL;
     }
 
-  buffer_set_overlays_before (b, NULL);
-  buffer_set_overlays_after (b, NULL);
+  set_buffer_overlays_before (b, NULL);
+  set_buffer_overlays_after (b, NULL);
 }
 
 /* Reinitialize everything about a buffer except its name and contents
@@ -702,10 +941,9 @@ delete_all_overlays (struct buffer *b)
 void
 reset_buffer (register struct buffer *b)
 {
-  BSET (b, filename, Qnil);
-  BSET (b, file_truename, Qnil);
-  BSET (b, directory,
-        (current_buffer) ? BVAR (current_buffer, directory) : Qnil);
+  bset_filename (b, Qnil);
+  bset_file_truename (b, Qnil);
+  bset_directory (b, current_buffer ? BVAR (current_buffer, directory) : Qnil);
   b->modtime = make_emacs_time (0, UNKNOWN_MODTIME_NSECS);
   b->modtime_size = -1;
   XSETFASTINT (BVAR (b, save_length), 0);
@@ -713,25 +951,25 @@ reset_buffer (register struct buffer *b)
   /* It is more conservative to start out "changed" than "unchanged".  */
   b->clip_changed = 0;
   b->prevent_redisplay_optimizations_p = 1;
-  BSET (b, backed_up, Qnil);
+  bset_backed_up (b, Qnil);
   BUF_AUTOSAVE_MODIFF (b) = 0;
   b->auto_save_failure_time = 0;
-  BSET (b, auto_save_file_name, Qnil);
-  BSET (b, read_only, Qnil);
-  buffer_set_overlays_before (b, NULL);
-  buffer_set_overlays_after (b, NULL);
+  bset_auto_save_file_name (b, Qnil);
+  bset_read_only (b, Qnil);
+  set_buffer_overlays_before (b, NULL);
+  set_buffer_overlays_after (b, NULL);
   b->overlay_center = BEG;
-  BSET (b, mark_active, Qnil);
-  BSET (b, point_before_scroll, Qnil);
-  BSET (b, file_format, Qnil);
-  BSET (b, auto_save_file_format, Qt);
-  BSET (b, last_selected_window, Qnil);
-  BSET (b, display_count, make_number (0));
-  BSET (b, display_time, Qnil);
-  BSET (b, enable_multibyte_characters,
-       BVAR (&buffer_defaults, enable_multibyte_characters));
-  BSET (b, cursor_type, BVAR (&buffer_defaults, cursor_type));
-  BSET (b, extra_line_spacing, BVAR (&buffer_defaults, extra_line_spacing));
+  bset_mark_active (b, Qnil);
+  bset_point_before_scroll (b, Qnil);
+  bset_file_format (b, Qnil);
+  bset_auto_save_file_format (b, Qt);
+  bset_last_selected_window (b, Qnil);
+  bset_display_count (b, make_number (0));
+  bset_display_time (b, Qnil);
+  bset_enable_multibyte_characters
+    (b, BVAR (&buffer_defaults, enable_multibyte_characters));
+  bset_cursor_type (b, BVAR (&buffer_defaults, cursor_type));
+  bset_extra_line_spacing (b, BVAR (&buffer_defaults, extra_line_spacing));
 
   b->display_error_modiff = 0;
 }
@@ -755,10 +993,10 @@ reset_buffer_local_variables (register struct buffer *b, int permanent_too)
      things that depend on the major mode.
      default-major-mode is handled at a higher level.
      We ignore it here.  */
-  BSET (b, major_mode, Qfundamental_mode);
-  BSET (b, keymap, Qnil);
-  BSET (b, mode_name, QSFundamental);
-  BSET (b, minor_modes, Qnil);
+  bset_major_mode (b, Qfundamental_mode);
+  bset_keymap (b, Qnil);
+  bset_mode_name (b, QSFundamental);
+  bset_minor_modes (b, Qnil);
 
   /* If the standard case table has been altered and invalidated,
      fix up its insides first.  */
@@ -767,15 +1005,15 @@ reset_buffer_local_variables (register struct buffer *b, int permanent_too)
          && CHAR_TABLE_P (XCHAR_TABLE (Vascii_downcase_table)->extras[2])))
     Fset_standard_case_table (Vascii_downcase_table);
 
-  BSET (b, downcase_table, Vascii_downcase_table);
-  BSET (b, upcase_table, XCHAR_TABLE (Vascii_downcase_table)->extras[0]);
-  BSET (b, case_canon_table, XCHAR_TABLE (Vascii_downcase_table)->extras[1]);
-  BSET (b, case_eqv_table, XCHAR_TABLE (Vascii_downcase_table)->extras[2]);
-  BSET (b, invisibility_spec, Qt);
+  bset_downcase_table (b, Vascii_downcase_table);
+  bset_upcase_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[0]);
+  bset_case_canon_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[1]);
+  bset_case_eqv_table (b, XCHAR_TABLE (Vascii_downcase_table)->extras[2]);
+  bset_invisibility_spec (b, Qt);
 
   /* Reset all (or most) per-buffer variables to their defaults.  */
   if (permanent_too)
-    BSET (b, local_var_alist, Qnil);
+    bset_local_var_alist (b, Qnil);
   else
     {
       Lisp_Object tmp, prop, last = Qnil;
@@ -809,7 +1047,7 @@ reset_buffer_local_variables (register struct buffer *b, int permanent_too)
           }
         /* Delete this local variable.  */
         else if (NILP (last))
-          BSET (b, local_var_alist, XCDR (tmp));
+          bset_local_var_alist (b, XCDR (tmp));
         else
           XSETCDR (last, XCDR (tmp));
     }
@@ -825,7 +1063,7 @@ reset_buffer_local_variables (register struct buffer *b, int permanent_too)
       if ((idx > 0
            && (permanent_too
                || buffer_permanent_local_flags[idx] == 0)))
-        PER_BUFFER_VALUE (b, offset) = PER_BUFFER_DEFAULT (offset);
+        set_per_buffer_value (b, offset, per_buffer_default (offset));
     }
 }
 
@@ -1001,7 +1239,7 @@ buffer_local_value_1 (Lisp_Object variable, Lisp_Object buffer)
       {
         union Lisp_Fwd *fwd = SYMBOL_FWD (sym);
         if (BUFFER_OBJFWDP (fwd))
-          result = PER_BUFFER_VALUE (buf, XBUFFER_OBJFWD (fwd)->offset);
+          result = per_buffer_value (buf, XBUFFER_OBJFWD (fwd)->offset);
         else
           result = Fdefault_value (variable);
         break;
@@ -1081,7 +1319,7 @@ No argument or nil as argument means use current buffer as BUFFER.  */)
             && SYMBOLP (PER_BUFFER_SYMBOL (offset)))
           {
             Lisp_Object sym = PER_BUFFER_SYMBOL (offset);
-            Lisp_Object val = PER_BUFFER_VALUE (buf, offset);
+            Lisp_Object val = per_buffer_value (buf, offset);
             result = Fcons (EQ (val, Qunbound) ? sym : Fcons (sym, val),
                             result);
           }
@@ -1286,7 +1524,7 @@ This does not change the name of the visited file (if any).  */)
         error ("Buffer name `%s' is in use", SDATA (newname));
     }
 
-  BSET (current_buffer, name, newname);
+  bset_name (current_buffer, newname);
 
   /* Catch redisplay's attention.  Unless we do this, the mode lines for
      any windows displaying current_buffer will stay unchanged.  */
@@ -1431,7 +1669,7 @@ No argument or nil as argument means do this for the current buffer.  */)
     }
 
   if (EQ (BVAR (XBUFFER (real_buffer), undo_list), Qt))
-    BSET (XBUFFER (real_buffer), undo_list, Qnil);
+    bset_undo_list (XBUFFER (real_buffer), Qnil);
 
   return Qnil;
 }
@@ -1691,7 +1929,7 @@ cleaning up all windows currently displaying the buffer to be killed. */)
           m = next;
         }
       BUF_MARKERS (b) = NULL;
-      buffer_set_intervals (b, NULL);
+      set_buffer_intervals (b, NULL);
 
       /* Perhaps we should explicitly free the interval tree here... */
     }
@@ -1703,7 +1941,7 @@ cleaning up all windows currently displaying the buffer to be killed. */)
   swap_out_buffer_local_variables (b);
   reset_buffer_local_variables (b, 1);
 
-  BSET (b, name, Qnil);
+  bset_name (b, Qnil);
 
   BLOCK_INPUT;
   if (b->base_buffer)
@@ -1727,9 +1965,9 @@ cleaning up all windows currently displaying the buffer to be killed. */)
       free_region_cache (b->width_run_cache);
       b->width_run_cache = 0;
     }
-  BSET (b, width_table, Qnil);
+  bset_width_table (b, Qnil);
   UNBLOCK_INPUT;
-  BSET (b, undo_list, Qnil);
+  bset_undo_list (b, Qnil);
 
   /* Run buffer-list-update-hook.  */
   if (!NILP (Vrun_hooks))
@@ -1770,8 +2008,8 @@ record_buffer (Lisp_Object buffer)
   Vinhibit_quit = tem;
 
   /* Update buffer list of selected frame.  */
-  FSET (f, buffer_list, Fcons (buffer, Fdelq (buffer, f->buffer_list)));
-  FSET (f, buried_buffer_list, Fdelq (buffer, f->buried_buffer_list));
+  fset_buffer_list (f, Fcons (buffer, Fdelq (buffer, f->buffer_list)));
+  fset_buried_buffer_list (f, Fdelq (buffer, f->buried_buffer_list));
 
   /* Run buffer-list-update-hook.  */
   if (!NILP (Vrun_hooks))
@@ -1808,9 +2046,9 @@ DEFUN ("bury-buffer-internal", Fbury_buffer_internal, Sbury_buffer_internal,
   Vinhibit_quit = tem;
 
   /* Update buffer lists of selected frame.  */
-  FSET (f, buffer_list, Fdelq (buffer, f->buffer_list));
-  FSET (f, buried_buffer_list,
-        Fcons (buffer, Fdelq (buffer, f->buried_buffer_list)));
+  fset_buffer_list (f, Fdelq (buffer, f->buffer_list));
+  fset_buried_buffer_list
+    (f, Fcons (buffer, Fdelq (buffer, f->buried_buffer_list)));
 
   /* Run buffer-list-update-hook.  */
   if (!NILP (Vrun_hooks))
@@ -1910,7 +2148,7 @@ set_buffer_internal_1 (register struct buffer *b)
       /* Put the undo list back in the base buffer, so that it appears
          that an indirect buffer shares the undo list of its base.  */
       if (old_buf->base_buffer)
-        BSET (old_buf->base_buffer, undo_list, BVAR (old_buf, undo_list));
+        bset_undo_list (old_buf->base_buffer, BVAR (old_buf, undo_list));
 
       /* If the old current buffer has markers to record PT, BEGV and ZV
          when it is not current, update them now.  */
@@ -1920,7 +2158,7 @@ set_buffer_internal_1 (register struct buffer *b)
   /* Get the undo list from the base buffer, so that it appears
      that an indirect buffer shares the undo list of its base.  */
   if (b->base_buffer)
-    BSET (b, undo_list, BVAR (b->base_buffer, undo_list));
+    bset_undo_list (b, BVAR (b->base_buffer, undo_list));
 
   /* If the new current buffer has markers to record PT, BEGV and ZV
      when it is not current, fetch them now.  */
@@ -2118,8 +2356,8 @@ DEFUN ("buffer-swap-text", Fbuffer_swap_text, Sbuffer_swap_text,
 #define swapfield_(field, type) \
   do {                                                  \
     type tmp##field = BVAR (other_buffer, field);               \
-    BSET (other_buffer, field, BVAR (current_buffer, field));   \
-    BSET (current_buffer, field, tmp##field);                   \
+    bset_##field (other_buffer, BVAR (current_buffer, field));  \
+    bset_##field (current_buffer, tmp##field);                  \
   } while (0)
 
   swapfield (own_text, struct buffer_text);
@@ -2159,8 +2397,8 @@ DEFUN ("buffer-swap-text", Fbuffer_swap_text, Sbuffer_swap_text,
   swapfield_ (pt_marker, Lisp_Object);
   swapfield_ (begv_marker, Lisp_Object);
   swapfield_ (zv_marker, Lisp_Object);
-  BSET (current_buffer, point_before_scroll, Qnil);
-  BSET (other_buffer, point_before_scroll, Qnil);
+  bset_point_before_scroll (current_buffer, Qnil);
+  bset_point_before_scroll (other_buffer, Qnil);
 
   current_buffer->text->modiff++;         other_buffer->text->modiff++;
   current_buffer->text->chars_modiff++;   other_buffer->text->chars_modiff++;
@@ -2249,7 +2487,7 @@ current buffer is cleared.  */)
 
   /* Don't record these buffer changes.  We will put a special undo entry
      instead.  */
-  BSET (current_buffer, undo_list, Qt);
+  bset_undo_list (current_buffer, Qt);
 
   /* If the cached position is for this buffer, clear it out.  */
   clear_charpos_cache (current_buffer);
@@ -2271,7 +2509,7 @@ current buffer is cleared.  */)
          to calculate the old correspondences.  */
       set_intervals_multibyte (0);
 
-      BSET (current_buffer, enable_multibyte_characters, Qnil);
+      bset_enable_multibyte_characters (current_buffer, Qnil);
 
       Z = Z_BYTE;
       BEGV = BEGV_BYTE;
@@ -2409,7 +2647,7 @@ current buffer is cleared.  */)
 
       /* Do this first, so that chars_in_text asks the right question.
          set_intervals_multibyte needs it too.  */
-      BSET (current_buffer, enable_multibyte_characters, Qt);
+      bset_enable_multibyte_characters (current_buffer, Qt);
 
       GPT_BYTE = advance_to_char_boundary (GPT_BYTE);
       GPT = chars_in_text (BEG_ADDR, GPT_BYTE - BEG_BYTE) + BEG;
@@ -2467,11 +2705,11 @@ current buffer is cleared.  */)
   if (!EQ (old_undo, Qt))
     {
       /* Represent all the above changes by a special undo entry.  */
-      BSET (current_buffer, undo_list,
-            Fcons (list3 (Qapply,
-                          intern ("set-buffer-multibyte"),
-                          NILP (flag) ? Qt : Qnil),
-                   old_undo));
+      bset_undo_list (current_buffer,
+                      Fcons (list3 (Qapply,
+                                    intern ("set-buffer-multibyte"),
+                                    NILP (flag) ? Qt : Qnil),
+                             old_undo));
     }
 
   UNGCPRO;
@@ -3238,7 +3476,7 @@ recenter_overlay_lists (struct buffer *buf, ptrdiff_t pos)
           if (prev)
             prev->next = next;
           else
-            buffer_set_overlays_before (buf, next);
+            set_buffer_overlays_before (buf, next);
 
           /* Search thru overlays_after for where to put it.  */
           other_prev = NULL;
@@ -3260,7 +3498,7 @@ recenter_overlay_lists (struct buffer *buf, ptrdiff_t pos)
           if (other_prev)
             other_prev->next = tail;
           else
-            buffer_set_overlays_after (buf, tail);
+            set_buffer_overlays_after (buf, tail);
           tail = prev;
         }
       else
@@ -3296,7 +3534,7 @@ recenter_overlay_lists (struct buffer *buf, ptrdiff_t pos)
           if (prev)
             prev->next = next;
           else
-            buffer_set_overlays_after (buf, next);
+            set_buffer_overlays_after (buf, next);
 
           /* Search thru overlays_before for where to put it.  */
           other_prev = NULL;
@@ -3318,7 +3556,7 @@ recenter_overlay_lists (struct buffer *buf, ptrdiff_t pos)
           if (other_prev)
             other_prev->next = tail;
           else
-            buffer_set_overlays_before (buf, tail);
+            set_buffer_overlays_before (buf, tail);
           tail = prev;
         }
     }
@@ -3423,7 +3661,7 @@ fix_start_end_in_overlays (register ptrdiff_t start, register ptrdiff_t end)
               beforep = tail;
             }
           if (!parent)
-            buffer_set_overlays_before (current_buffer, tail->next);
+            set_buffer_overlays_before (current_buffer, tail->next);
           else
             parent->next = tail->next;
           tail = tail->next;
@@ -3469,7 +3707,7 @@ fix_start_end_in_overlays (register ptrdiff_t start, register ptrdiff_t end)
               beforep = tail;
             }
           if (!parent)
-            buffer_set_overlays_after (current_buffer, tail->next);
+            set_buffer_overlays_after (current_buffer, tail->next);
           else
             parent->next = tail->next;
           tail = tail->next;
@@ -3483,14 +3721,14 @@ fix_start_end_in_overlays (register ptrdiff_t start, register ptrdiff_t end)
   if (beforep)
     {
       beforep->next = current_buffer->overlays_before;
-      buffer_set_overlays_before (current_buffer, before_list);
+      set_buffer_overlays_before (current_buffer, before_list);
     }
   recenter_overlay_lists (current_buffer, current_buffer->overlay_center);
 
   if (afterp)
     {
       afterp->next = current_buffer->overlays_after;
-      buffer_set_overlays_after (current_buffer, after_list);
+      set_buffer_overlays_after (current_buffer, after_list);
     }
   recenter_overlay_lists (current_buffer, current_buffer->overlay_center);
 }
@@ -3567,7 +3805,7 @@ fix_overlays_before (struct buffer *bp, ptrdiff_t prev, ptrdiff_t pos)
           if (!right_pair)
             {
               found->next = bp->overlays_before;
-              buffer_set_overlays_before (bp, found);
+              set_buffer_overlays_before (bp, found);
             }
           else
             {
@@ -3645,13 +3883,13 @@ for the rear of the overlay advance when text is inserted there
     {
       if (b->overlays_after)
         XOVERLAY (overlay)->next = b->overlays_after;
-      buffer_set_overlays_after (b, XOVERLAY (overlay));
+      set_buffer_overlays_after (b, XOVERLAY (overlay));
     }
   else
     {
       if (b->overlays_before)
         XOVERLAY (overlay)->next = b->overlays_before;
-      buffer_set_overlays_before (b, XOVERLAY (overlay));
+      set_buffer_overlays_before (b, XOVERLAY (overlay));
     }
 
   /* This puts it in the right list, and in the right order.  */
@@ -3716,8 +3954,8 @@ unchain_both (struct buffer *b, Lisp_Object overlay)
 {
   struct Lisp_Overlay *ov = XOVERLAY (overlay);
 
-  buffer_set_overlays_before (b, unchain_overlay (b->overlays_before, ov));
-  buffer_set_overlays_after (b, unchain_overlay (b->overlays_after, ov));
+  set_buffer_overlays_before (b, unchain_overlay (b->overlays_before, ov));
+  set_buffer_overlays_after (b, unchain_overlay (b->overlays_after, ov));
   eassert (XOVERLAY (overlay)->next == NULL);
 }
 
@@ -3812,12 +4050,12 @@ buffer.  */)
   if (n_end < b->overlay_center)
     {
       XOVERLAY (overlay)->next = b->overlays_after;
-      buffer_set_overlays_after (b, XOVERLAY (overlay));
+      set_buffer_overlays_after (b, XOVERLAY (overlay));
     }
   else
     {
       XOVERLAY (overlay)->next = b->overlays_before;
-      buffer_set_overlays_before (b, XOVERLAY (overlay));
+      set_buffer_overlays_before (b, XOVERLAY (overlay));
     }
 
   /* This puts it in the right list, and in the right order.  */
@@ -4913,8 +5151,8 @@ init_buffer_once (void)
   /* No one will share the text with these buffers, but let's play it safe.  */
   buffer_defaults.indirections = 0;
   buffer_local_symbols.indirections = 0;
-  buffer_set_intervals (&buffer_defaults, NULL);
-  buffer_set_intervals (&buffer_local_symbols, NULL);
+  set_buffer_intervals (&buffer_defaults, NULL);
+  set_buffer_intervals (&buffer_local_symbols, NULL);
   XSETPVECTYPESIZE (&buffer_defaults, PVEC_BUFFER, pvecsize);
   XSETBUFFER (Vbuffer_defaults, &buffer_defaults);
   XSETPVECTYPESIZE (&buffer_local_symbols, PVEC_BUFFER, pvecsize);
@@ -4924,55 +5162,55 @@ init_buffer_once (void)
   /* Must do these before making the first buffer! */
 
   /* real setup is done in bindings.el */
-  BSET (&buffer_defaults, mode_line_format, build_pure_c_string ("%-"));
-  BSET (&buffer_defaults, header_line_format, Qnil);
-  BSET (&buffer_defaults, abbrev_mode, Qnil);
-  BSET (&buffer_defaults, overwrite_mode, Qnil);
-  BSET (&buffer_defaults, case_fold_search, Qt);
-  BSET (&buffer_defaults, auto_fill_function, Qnil);
-  BSET (&buffer_defaults, selective_display, Qnil);
-  BSET (&buffer_defaults, selective_display_ellipses, Qt);
-  BSET (&buffer_defaults, abbrev_table, Qnil);
-  BSET (&buffer_defaults, display_table, Qnil);
-  BSET (&buffer_defaults, undo_list, Qnil);
-  BSET (&buffer_defaults, mark_active, Qnil);
-  BSET (&buffer_defaults, file_format, Qnil);
-  BSET (&buffer_defaults, auto_save_file_format, Qt);
-  buffer_set_overlays_before (&buffer_defaults, NULL);
-  buffer_set_overlays_after (&buffer_defaults, NULL);
+  bset_mode_line_format (&buffer_defaults, build_pure_c_string ("%-"));
+  bset_header_line_format (&buffer_defaults, Qnil);
+  bset_abbrev_mode (&buffer_defaults, Qnil);
+  bset_overwrite_mode (&buffer_defaults, Qnil);
+  bset_case_fold_search (&buffer_defaults, Qt);
+  bset_auto_fill_function (&buffer_defaults, Qnil);
+  bset_selective_display (&buffer_defaults, Qnil);
+  bset_selective_display_ellipses (&buffer_defaults, Qt);
+  bset_abbrev_table (&buffer_defaults, Qnil);
+  bset_display_table (&buffer_defaults, Qnil);
+  bset_undo_list (&buffer_defaults, Qnil);
+  bset_mark_active (&buffer_defaults, Qnil);
+  bset_file_format (&buffer_defaults, Qnil);
+  bset_auto_save_file_format (&buffer_defaults, Qt);
+  set_buffer_overlays_before (&buffer_defaults, NULL);
+  set_buffer_overlays_after (&buffer_defaults, NULL);
   buffer_defaults.overlay_center = BEG;
 
   XSETFASTINT (BVAR (&buffer_defaults, tab_width), 8);
-  BSET (&buffer_defaults, truncate_lines, Qnil);
-  BSET (&buffer_defaults, word_wrap, Qnil);
-  BSET (&buffer_defaults, ctl_arrow, Qt);
-  BSET (&buffer_defaults, bidi_display_reordering, Qt);
-  BSET (&buffer_defaults, bidi_paragraph_direction, Qnil);
-  BSET (&buffer_defaults, cursor_type, Qt);
-  BSET (&buffer_defaults, extra_line_spacing, Qnil);
-  BSET (&buffer_defaults, cursor_in_non_selected_windows, Qt);
-
-  BSET (&buffer_defaults, enable_multibyte_characters, Qt);
-  BSET (&buffer_defaults, buffer_file_coding_system, Qnil);
+  bset_truncate_lines (&buffer_defaults, Qnil);
+  bset_word_wrap (&buffer_defaults, Qnil);
+  bset_ctl_arrow (&buffer_defaults, Qt);
+  bset_bidi_display_reordering (&buffer_defaults, Qt);
+  bset_bidi_paragraph_direction (&buffer_defaults, Qnil);
+  bset_cursor_type (&buffer_defaults, Qt);
+  bset_extra_line_spacing (&buffer_defaults, Qnil);
+  bset_cursor_in_non_selected_windows (&buffer_defaults, Qt);
+
+  bset_enable_multibyte_characters (&buffer_defaults, Qt);
+  bset_buffer_file_coding_system (&buffer_defaults, Qnil);
   XSETFASTINT (BVAR (&buffer_defaults, fill_column), 70);
   XSETFASTINT (BVAR (&buffer_defaults, left_margin), 0);
-  BSET (&buffer_defaults, cache_long_line_scans, Qnil);
-  BSET (&buffer_defaults, file_truename, Qnil);
+  bset_cache_long_line_scans (&buffer_defaults, Qnil);
+  bset_file_truename (&buffer_defaults, Qnil);
   XSETFASTINT (BVAR (&buffer_defaults, display_count), 0);
   XSETFASTINT (BVAR (&buffer_defaults, left_margin_cols), 0);
   XSETFASTINT (BVAR (&buffer_defaults, right_margin_cols), 0);
-  BSET (&buffer_defaults, left_fringe_width, Qnil);
-  BSET (&buffer_defaults, right_fringe_width, Qnil);
-  BSET (&buffer_defaults, fringes_outside_margins, Qnil);
-  BSET (&buffer_defaults, scroll_bar_width, Qnil);
-  BSET (&buffer_defaults, vertical_scroll_bar_type, Qt);
-  BSET (&buffer_defaults, indicate_empty_lines, Qnil);
-  BSET (&buffer_defaults, indicate_buffer_boundaries, Qnil);
-  BSET (&buffer_defaults, fringe_indicator_alist, Qnil);
-  BSET (&buffer_defaults, fringe_cursor_alist, Qnil);
-  BSET (&buffer_defaults, scroll_up_aggressively, Qnil);
-  BSET (&buffer_defaults, scroll_down_aggressively, Qnil);
-  BSET (&buffer_defaults, display_time, Qnil);
+  bset_left_fringe_width (&buffer_defaults, Qnil);
+  bset_right_fringe_width (&buffer_defaults, Qnil);
+  bset_fringes_outside_margins (&buffer_defaults, Qnil);
+  bset_scroll_bar_width (&buffer_defaults, Qnil);
+  bset_vertical_scroll_bar_type (&buffer_defaults, Qt);
+  bset_indicate_empty_lines (&buffer_defaults, Qnil);
+  bset_indicate_buffer_boundaries (&buffer_defaults, Qnil);
+  bset_fringe_indicator_alist (&buffer_defaults, Qnil);
+  bset_fringe_cursor_alist (&buffer_defaults, Qnil);
+  bset_scroll_up_aggressively (&buffer_defaults, Qnil);
+  bset_scroll_down_aggressively (&buffer_defaults, Qnil);
+  bset_display_time (&buffer_defaults, Qnil);
 
   /* Assign the local-flags to the slots that have default values.
      The local flag is a bit that is used in the buffer
@@ -4984,24 +5222,24 @@ init_buffer_once (void)
 
   /* 0 means not a lisp var, -1 means always local, else mask */
   memset (&buffer_local_flags, 0, sizeof buffer_local_flags);
-  BSET (&buffer_local_flags, filename, make_number (-1));
-  BSET (&buffer_local_flags, directory, make_number (-1));
-  BSET (&buffer_local_flags, backed_up, make_number (-1));
-  BSET (&buffer_local_flags, save_length, make_number (-1));
-  BSET (&buffer_local_flags, auto_save_file_name, make_number (-1));
-  BSET (&buffer_local_flags, read_only, make_number (-1));
-  BSET (&buffer_local_flags, major_mode, make_number (-1));
-  BSET (&buffer_local_flags, mode_name, make_number (-1));
-  BSET (&buffer_local_flags, undo_list, make_number (-1));
-  BSET (&buffer_local_flags, mark_active, make_number (-1));
-  BSET (&buffer_local_flags, point_before_scroll, make_number (-1));
-  BSET (&buffer_local_flags, file_truename, make_number (-1));
-  BSET (&buffer_local_flags, invisibility_spec, make_number (-1));
-  BSET (&buffer_local_flags, file_format, make_number (-1));
-  BSET (&buffer_local_flags, auto_save_file_format, make_number (-1));
-  BSET (&buffer_local_flags, display_count, make_number (-1));
-  BSET (&buffer_local_flags, display_time, make_number (-1));
-  BSET (&buffer_local_flags, enable_multibyte_characters, make_number (-1));
+  bset_filename (&buffer_local_flags, make_number (-1));
+  bset_directory (&buffer_local_flags, make_number (-1));
+  bset_backed_up (&buffer_local_flags, make_number (-1));
+  bset_save_length (&buffer_local_flags, make_number (-1));
+  bset_auto_save_file_name (&buffer_local_flags, make_number (-1));
+  bset_read_only (&buffer_local_flags, make_number (-1));
+  bset_major_mode (&buffer_local_flags, make_number (-1));
+  bset_mode_name (&buffer_local_flags, make_number (-1));
+  bset_undo_list (&buffer_local_flags, make_number (-1));
+  bset_mark_active (&buffer_local_flags, make_number (-1));
+  bset_point_before_scroll (&buffer_local_flags, make_number (-1));
+  bset_file_truename (&buffer_local_flags, make_number (-1));
+  bset_invisibility_spec (&buffer_local_flags, make_number (-1));
+  bset_file_format (&buffer_local_flags, make_number (-1));
+  bset_auto_save_file_format (&buffer_local_flags, make_number (-1));
+  bset_display_count (&buffer_local_flags, make_number (-1));
+  bset_display_time (&buffer_local_flags, make_number (-1));
+  bset_enable_multibyte_characters (&buffer_local_flags, make_number (-1));
 
   idx = 1;
   XSETFASTINT (BVAR (&buffer_local_flags, mode_line_format), idx); ++idx;
@@ -5057,7 +5295,7 @@ init_buffer_once (void)
   QSFundamental = build_pure_c_string ("Fundamental");
 
   Qfundamental_mode = intern_c_string ("fundamental-mode");
-  BSET (&buffer_defaults, major_mode, Qfundamental_mode);
+  bset_major_mode (&buffer_defaults, Qfundamental_mode);
 
   Qmode_class = intern_c_string ("mode-class");
 
@@ -5120,13 +5358,13 @@ init_buffer (void)
       len++;
     }
 
-  BSET (current_buffer, directory, make_unibyte_string (pwd, len));
+  bset_directory (current_buffer, make_unibyte_string (pwd, len));
   if (! NILP (BVAR (&buffer_defaults, enable_multibyte_characters)))
     /* At this moment, we still don't know how to decode the
        directory name.  So, we keep the bytes in multibyte form so
        that ENCODE_FILE correctly gets the original bytes.  */
-    BSET (current_buffer, directory,
-         string_to_multibyte (BVAR (current_buffer, directory)));
+    bset_directory
+      (current_buffer, string_to_multibyte (BVAR (current_buffer, directory)));
 
   /* Add /: to the front of the name
      if it would otherwise be treated as magic.  */
@@ -5137,11 +5375,12 @@ init_buffer (void)
          However, it is not necessary to turn / into /:/.
          So avoid doing that.  */
       && strcmp ("/", SSDATA (BVAR (current_buffer, directory))))
-    BSET (current_buffer, directory,
-         concat2 (build_string ("/:"), BVAR (current_buffer, directory)));
+    bset_directory
+      (current_buffer,
+       concat2 (build_string ("/:"), BVAR (current_buffer, directory)));
 
   temp = get_minibuffer (0);
-  BSET (XBUFFER (temp), directory, BVAR (current_buffer, directory));
+  bset_directory (XBUFFER (temp), BVAR (current_buffer, directory));
 
   free (pwd);
 }
diff --git a/src/buffer.h b/src/buffer.h
index 7a6bddee5ec..6c63c52dc47 100644
--- a/src/buffer.h
+++ b/src/buffer.h
@@ -477,7 +477,6 @@ struct buffer_text
 /* Most code should use this macro to access Lisp fields in struct buffer.  */
 
 #define BVAR(buf, field) ((buf)->INTERNAL_FIELD (field))
-#define BSET(buf, field, value) ((buf)->INTERNAL_FIELD (field) = (value))
 
 /* This is the structure that the buffer Lisp object points to.  */
 
@@ -862,6 +861,104 @@ struct buffer
   Lisp_Object INTERNAL_FIELD (undo_list);
 };
 
+/* Most code should use these functions to set Lisp fields in struct
+   buffer.  */
+BUFFER_INLINE void
+bset_bidi_paragraph_direction (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (bidi_paragraph_direction) = val;
+}
+BUFFER_INLINE void
+bset_case_canon_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (case_canon_table) = val;
+}
+BUFFER_INLINE void
+bset_case_eqv_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (case_eqv_table) = val;
+}
+BUFFER_INLINE void
+bset_directory (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (directory) = val;
+}
+BUFFER_INLINE void
+bset_display_count (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (display_count) = val;
+}
+BUFFER_INLINE void
+bset_display_time (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (display_time) = val;
+}
+BUFFER_INLINE void
+bset_downcase_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (downcase_table) = val;
+}
+BUFFER_INLINE void
+bset_enable_multibyte_characters (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (enable_multibyte_characters) = val;
+}
+BUFFER_INLINE void
+bset_filename (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (filename) = val;
+}
+BUFFER_INLINE void
+bset_keymap (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (keymap) = val;
+}
+BUFFER_INLINE void
+bset_last_selected_window (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (last_selected_window) = val;
+}
+BUFFER_INLINE void
+bset_local_var_alist (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (local_var_alist) = val;
+}
+BUFFER_INLINE void
+bset_mark_active (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (mark_active) = val;
+}
+BUFFER_INLINE void
+bset_point_before_scroll (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (point_before_scroll) = val;
+}
+BUFFER_INLINE void
+bset_read_only (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (read_only) = val;
+}
+BUFFER_INLINE void
+bset_truncate_lines (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (truncate_lines) = val;
+}
+BUFFER_INLINE void
+bset_undo_list (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (undo_list) = val;
+}
+BUFFER_INLINE void
+bset_upcase_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (upcase_table) = val;
+}
+BUFFER_INLINE void
+bset_width_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (width_table) = val;
+}
+
 
 /* Chain of all buffers, including killed ones.  */
 
@@ -953,7 +1050,7 @@ extern Lisp_Object Qfirst_change_hook;
 /* Get text properties of B.  */
 
 BUFFER_INLINE INTERVAL
-buffer_get_intervals (struct buffer *b)
+buffer_intervals (struct buffer *b)
 {
   eassert (b->text != NULL);
   return b->text->intervals;
@@ -962,26 +1059,12 @@ buffer_get_intervals (struct buffer *b)
 /* Set text properties of B to I.  */
 
 BUFFER_INLINE void
-buffer_set_intervals (struct buffer *b, INTERVAL i)
+set_buffer_intervals (struct buffer *b, INTERVAL i)
 {
   eassert (b->text != NULL);
   b->text->intervals = i;
 }
 
-/* Set an appropriate overlay of B.  */
-
-BUFFER_INLINE void
-buffer_set_overlays_before (struct buffer *b, struct Lisp_Overlay *o)
-{
-  b->overlays_before = o;
-}
-
-BUFFER_INLINE void
-buffer_set_overlays_after (struct buffer *b, struct Lisp_Overlay *o)
-{
-  b->overlays_after = o;
-}
-
 /* Non-zero if current buffer has overlays.  */
 
 BUFFER_INLINE int
@@ -1120,18 +1203,36 @@ extern int last_per_buffer_idx;
 #define PER_BUFFER_IDX(OFFSET) \
       XINT (*(Lisp_Object *)((OFFSET) + (char *) &buffer_local_flags))
 
-/* Return the default value of the per-buffer variable at offset
-   OFFSET in the buffer structure.  */
+/* Functions to get and set default value of the per-buffer
+   variable at offset OFFSET in the buffer structure.  */
+
+BUFFER_INLINE Lisp_Object
+per_buffer_default (int offset)
+{
+  return *(Lisp_Object *)(offset + (char *) &buffer_defaults);
+}
+
+BUFFER_INLINE void
+set_per_buffer_default (int offset, Lisp_Object value)
+{
+  *(Lisp_Object *)(offset + (char *) &buffer_defaults) = value;
+}
 
-#define PER_BUFFER_DEFAULT(OFFSET) \
-      (*(Lisp_Object *)((OFFSET) + (char *) &buffer_defaults))
+/* Functions to get and set buffer-local value of the per-buffer
+   variable at offset OFFSET in the buffer structure.  */
+
+BUFFER_INLINE Lisp_Object
+per_buffer_value (struct buffer *b, int offset)
+{
+  return *(Lisp_Object *)(offset + (char *) b);
+}
 
-/* Return the buffer-local value of the per-buffer variable at offset
-   OFFSET in the buffer structure.  */
+BUFFER_INLINE void
+set_per_buffer_value (struct buffer *b, int offset, Lisp_Object value)
+{
+  *(Lisp_Object *)(offset + (char *) b) = value;
+}
 
-#define PER_BUFFER_VALUE(BUFFER, OFFSET) \
-      (*(Lisp_Object *)((OFFSET) + (char *) (BUFFER)))
-
 /* Downcase a character C, or make no change if that cannot be done.  */
 BUFFER_INLINE int
 downcase (int c)
diff --git a/src/callint.c b/src/callint.c
index e0133864674..36a59e812f2 100644
--- a/src/callint.c
+++ b/src/callint.c
@@ -372,7 +372,7 @@ invoke it.  If KEYS is omitted or nil, the return value of
       Vthis_command = save_this_command;
       Vthis_original_command = save_this_original_command;
       Vreal_this_command = save_real_this_command;
-      KSET (current_kboard, Vlast_command, save_last_command);
+      kset_last_command (current_kboard, save_last_command);
 
       temporarily_switch_to_single_kboard (NULL);
       return unbind_to (speccount, apply1 (function, specs));
@@ -843,7 +843,7 @@ invoke it.  If KEYS is omitted or nil, the return value of
   Vthis_command = save_this_command;
   Vthis_original_command = save_this_original_command;
   Vreal_this_command = save_real_this_command;
-  KSET (current_kboard, Vlast_command, save_last_command);
+  kset_last_command (current_kboard, save_last_command);
 
   {
     Lisp_Object val;
diff --git a/src/callproc.c b/src/callproc.c
index 10a80168fb2..4bf1da04e1a 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -65,10 +65,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "nsterm.h"
 #endif
 
-#ifndef USE_CRT_DLL
-extern char **environ;
-#endif
-
 #ifdef HAVE_SETPGID
 #if !defined (USG)
 #undef setpgrp
diff --git a/src/casetab.c b/src/casetab.c
index 6097299047a..a163d5204f8 100644
--- a/src/casetab.c
+++ b/src/casetab.c
@@ -128,13 +128,13 @@ set_case_table (Lisp_Object table, int standard)
       up = Fmake_char_table (Qcase_table, Qnil);
       map_char_table (set_identity, Qnil, table, up);
       map_char_table (shuffle, Qnil, table, up);
-      char_table_set_extras (table, 0, up);
+      set_char_table_extras (table, 0, up);
     }
 
   if (NILP (canon))
     {
       canon = Fmake_char_table (Qcase_table, Qnil);
-      char_table_set_extras (table, 1, canon);
+      set_char_table_extras (table, 1, canon);
       map_char_table (set_canon, Qnil, table, table);
     }
 
@@ -143,11 +143,11 @@ set_case_table (Lisp_Object table, int standard)
       eqv = Fmake_char_table (Qcase_table, Qnil);
       map_char_table (set_identity, Qnil, canon, eqv);
       map_char_table (shuffle, Qnil, canon, eqv);
-      char_table_set_extras (table, 2, eqv);
+      set_char_table_extras (table, 2, eqv);
     }
 
   /* This is so set_image_of_range_1 in regex.c can find the EQV table.  */
-  char_table_set_extras (canon, 2, eqv);
+  set_char_table_extras (canon, 2, eqv);
 
   if (standard)
     {
@@ -158,10 +158,10 @@ set_case_table (Lisp_Object table, int standard)
     }
   else
     {
-      BSET (current_buffer, downcase_table, table);
-      BSET (current_buffer, upcase_table, up);
-      BSET (current_buffer, case_canon_table, canon);
-      BSET (current_buffer, case_eqv_table, eqv);
+      bset_downcase_table (current_buffer, table);
+      bset_upcase_table (current_buffer, up);
+      bset_case_canon_table (current_buffer, canon);
+      bset_case_eqv_table (current_buffer, eqv);
     }
 
   return table;
@@ -260,7 +260,7 @@ init_casetab_once (void)
 
   down = Fmake_char_table (Qcase_table, Qnil);
   Vascii_downcase_table = down;
-  CSET (XCHAR_TABLE (down), purpose, Qcase_table);
+  set_char_table_purpose (down, Qcase_table);
 
   for (i = 0; i < 128; i++)
     {
@@ -268,10 +268,10 @@ init_casetab_once (void)
       CHAR_TABLE_SET (down, i, make_number (c));
     }
 
-  char_table_set_extras (down, 1, Fcopy_sequence (down));
+  set_char_table_extras (down, 1, Fcopy_sequence (down));
 
   up = Fmake_char_table (Qcase_table, Qnil);
-  char_table_set_extras (down, 0, up);
+  set_char_table_extras (down, 0, up);
 
   for (i = 0; i < 128; i++)
     {
@@ -281,7 +281,7 @@ init_casetab_once (void)
       CHAR_TABLE_SET (up, i, make_number (c));
     }
 
-  char_table_set_extras (down, 2, Fcopy_sequence (up));
+  set_char_table_extras (down, 2, Fcopy_sequence (up));
 
   /* Fill in what isn't filled in.  */
   set_case_table (down, 1);
diff --git a/src/category.c b/src/category.c
index 246a7d35a6d..1c9085fd558 100644
--- a/src/category.c
+++ b/src/category.c
@@ -40,6 +40,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "category.h"
 #include "keymap.h"
 
+/* This setter is used only in this file, so it can be private.  */
+static inline void
+bset_category_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (category_table) = val;
+}
+
 /* The version number of the latest category table.  Each category
    table has a unique version number.  It is assigned a new number
    also when it is modified.  When a regular expression is compiled
@@ -70,7 +77,7 @@ hash_get_category_set (Lisp_Object table, Lisp_Object category_set)
   EMACS_UINT hash;
 
   if (NILP (XCHAR_TABLE (table)->extras[1]))
-    char_table_set_extras
+    set_char_table_extras
       (table, 1,
        make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE),
                         make_float (DEFAULT_REHASH_SIZE),
@@ -136,7 +143,7 @@ the current buffer's category table.  */)
     error ("Category `%c' is already defined", (int) XFASTINT (category));
   if (!NILP (Vpurify_flag))
     docstring = Fpurecopy (docstring);
-  CATEGORY_DOCSTRING (table, XFASTINT (category)) = docstring;
+  SET_CATEGORY_DOCSTRING (table, XFASTINT (category), docstring);
 
   return Qnil;
 }
@@ -238,9 +245,9 @@ copy_category_table (Lisp_Object table)
   table = copy_char_table (table);
 
   if (! NILP (XCHAR_TABLE (table)->defalt))
-    CSET (XCHAR_TABLE (table), defalt,
-          Fcopy_sequence (XCHAR_TABLE (table)->defalt));
-  char_table_set_extras
+    set_char_table_defalt (table,
+                           Fcopy_sequence (XCHAR_TABLE (table)->defalt));
+  set_char_table_extras
     (table, 0, Fcopy_sequence (XCHAR_TABLE (table)->extras[0]));
   map_char_table (copy_category_entry, Qnil, table, table);
 
@@ -270,9 +277,9 @@ DEFUN ("make-category-table", Fmake_category_table, Smake_category_table,
   int i;
 
   val = Fmake_char_table (Qcategory_table, Qnil);
-  CSET (XCHAR_TABLE (val), defalt, MAKE_CATEGORY_SET);
+  set_char_table_defalt (val, MAKE_CATEGORY_SET);
   for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++)
-    char_table_set_contents (val, i, MAKE_CATEGORY_SET);
+    set_char_table_contents (val, i, MAKE_CATEGORY_SET);
   Fset_char_table_extra_slot (val, make_number (0),
                               Fmake_vector (make_number (95), Qnil));
   return val;
@@ -285,7 +292,7 @@ Return TABLE.  */)
 {
   int idx;
   table = check_category_table (table);
-  BSET (current_buffer, category_table, table);
+  bset_category_table (current_buffer, table);
   /* Indicate that this buffer now has a specified category table.  */
   idx = PER_BUFFER_VAR_IDX (category_table);
   SET_PER_BUFFER_VALUE_P (current_buffer, idx, 1);
@@ -466,7 +473,7 @@ init_category_once (void)
 
   Vstandard_category_table = Fmake_char_table (Qcategory_table, Qnil);
   /* Set a category set which contains nothing to the default.  */
-  CSET (XCHAR_TABLE (Vstandard_category_table), defalt, MAKE_CATEGORY_SET);
+  set_char_table_defalt (Vstandard_category_table, MAKE_CATEGORY_SET);
   Fset_char_table_extra_slot (Vstandard_category_table, make_number (0),
                               Fmake_vector (make_number (95), Qnil));
 }
diff --git a/src/category.h b/src/category.h
index f29034acff1..9fb981ed383 100644
--- a/src/category.h
+++ b/src/category.h
@@ -96,8 +96,12 @@ CHAR_HAS_CATEGORY (int ch, int category)
 #define Vstandard_category_table BVAR (&buffer_defaults, category_table)
 
 /* Return the doc string of CATEGORY in category table TABLE.  */
-#define CATEGORY_DOCSTRING(table, category) \
-  XVECTOR (Fchar_table_extra_slot (table, make_number (0)))->contents[(category) - ' ']
+#define CATEGORY_DOCSTRING(table, category)                             \
+  AREF (Fchar_table_extra_slot (table, make_number (0)), ((category) - ' '))
+
+/* Set the doc string of CATEGORY to VALUE in category table TABLE.  */
+#define SET_CATEGORY_DOCSTRING(table, category, value)                  \
+  ASET (Fchar_table_extra_slot (table, make_number (0)), ((category) - ' '), value)
 
 /* Return the version number of category table TABLE.  Not used for
    the moment.  */
diff --git a/src/charset.c b/src/charset.c
index 87c16e12008..3e286fa947d 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -1131,7 +1131,7 @@ usage: (define-charset-internal ...)  */)
     {
       new_definition_p = 0;
       id = XFASTINT (CHARSET_SYMBOL_ID (args[charset_arg_name]));
-      set_hash_value (hash_table, charset.hash_index, attrs);
+      set_hash_value_slot (hash_table, charset.hash_index, attrs);
     }
   else
     {
diff --git a/src/chartab.c b/src/chartab.c
index 6d3f83499d8..711a49ed397 100644
--- a/src/chartab.c
+++ b/src/chartab.c
@@ -115,8 +115,8 @@ the char-table has no extra slot.  */)
   size = VECSIZE (struct Lisp_Char_Table) - 1 + n_extras;
   vector = Fmake_vector (make_number (size), init);
   XSETPVECTYPE (XVECTOR (vector), PVEC_CHAR_TABLE);
-  CSET (XCHAR_TABLE (vector), parent, Qnil);
-  CSET (XCHAR_TABLE (vector), purpose, purpose);
+  set_char_table_parent (vector, Qnil);
+  set_char_table_purpose (vector, purpose);
   XSETCHAR_TABLE (vector, XCHAR_TABLE (vector));
   return vector;
 }
@@ -155,21 +155,17 @@ char_table_ascii (Lisp_Object table)
 static Lisp_Object
 copy_sub_char_table (Lisp_Object table)
 {
-  Lisp_Object copy;
   int depth = XINT (XSUB_CHAR_TABLE (table)->depth);
   int min_char = XINT (XSUB_CHAR_TABLE (table)->min_char);
-  Lisp_Object val;
+  Lisp_Object copy = make_sub_char_table (depth, min_char, Qnil);
   int i;
 
-  copy = make_sub_char_table (depth, min_char, Qnil);
   /* Recursively copy any sub char-tables.  */
   for (i = 0; i < chartab_size[depth]; i++)
     {
-      val = XSUB_CHAR_TABLE (table)->contents[i];
-      if (SUB_CHAR_TABLE_P (val))
-        sub_char_table_set_contents (copy, i, copy_sub_char_table (val));
-      else
-        sub_char_table_set_contents (copy, i, val);
+      Lisp_Object val = XSUB_CHAR_TABLE (table)->contents[i];
+      set_sub_char_table_contents
+        (copy, i, SUB_CHAR_TABLE_P (val) ? copy_sub_char_table (val) : val);
     }
 
   return copy;
@@ -185,19 +181,19 @@ copy_char_table (Lisp_Object table)
 
   copy = Fmake_vector (make_number (size), Qnil);
   XSETPVECTYPE (XVECTOR (copy), PVEC_CHAR_TABLE);
-  CSET (XCHAR_TABLE (copy), defalt, XCHAR_TABLE (table)->defalt);
-  CSET (XCHAR_TABLE (copy), parent, XCHAR_TABLE (table)->parent);
-  CSET (XCHAR_TABLE (copy), purpose, XCHAR_TABLE (table)->purpose);
+  set_char_table_defalt (copy, XCHAR_TABLE (table)->defalt);
+  set_char_table_parent (copy, XCHAR_TABLE (table)->parent);
+  set_char_table_purpose (copy, XCHAR_TABLE (table)->purpose);
   for (i = 0; i < chartab_size[0]; i++)
-    char_table_set_contents
-      (copy, i, 
+    set_char_table_contents
+      (copy, i,
        (SUB_CHAR_TABLE_P (XCHAR_TABLE (table)->contents[i])
         ? copy_sub_char_table (XCHAR_TABLE (table)->contents[i])
         : XCHAR_TABLE (table)->contents[i]));
-  CSET (XCHAR_TABLE (copy), ascii, char_table_ascii (copy));
+  set_char_table_ascii (copy, char_table_ascii (copy));
   size -= VECSIZE (struct Lisp_Char_Table) - 1;
   for (i = 0; i < size; i++)
-    char_table_set_extras (copy, i, XCHAR_TABLE (table)->extras[i]);
+    set_char_table_extras (copy, i, XCHAR_TABLE (table)->extras[i]);
 
   XSETCHAR_TABLE (copy, XCHAR_TABLE (copy));
   return copy;
@@ -395,7 +391,7 @@ sub_char_table_set (Lisp_Object table, int c, Lisp_Object val, int is_uniprop)
   Lisp_Object sub;
 
   if (depth == 3)
-    sub_char_table_set_contents (table, i, val);
+    set_sub_char_table_contents (table, i, val);
   else
     {
       sub = tbl->contents[i];
@@ -408,21 +404,21 @@ sub_char_table_set (Lisp_Object table, int c, Lisp_Object val, int is_uniprop)
               sub = make_sub_char_table (depth + 1,
                                          min_char + i * chartab_chars[depth],
                                          sub);
-              sub_char_table_set_contents (table, i, sub);
+              set_sub_char_table_contents (table, i, sub);
             }
         }
       sub_char_table_set (sub, c, val, is_uniprop);
     }
 }
 
-Lisp_Object
+void
 char_table_set (Lisp_Object table, int c, Lisp_Object val)
 {
   struct Lisp_Char_Table *tbl = XCHAR_TABLE (table);
 
   if (ASCII_CHAR_P (c)
       && SUB_CHAR_TABLE_P (tbl->ascii))
-    sub_char_table_set_contents (tbl->ascii, c, val);
+    set_sub_char_table_contents (tbl->ascii, c, val);
   else
     {
       int i = CHARTAB_IDX (c, 0, 0);
@@ -432,13 +428,12 @@ char_table_set (Lisp_Object table, int c, Lisp_Object val)
       if (! SUB_CHAR_TABLE_P (sub))
         {
           sub = make_sub_char_table (1, i * chartab_chars[0], sub);
-          char_table_set_contents (table, i, sub);
+          set_char_table_contents (table, i, sub);
         }
       sub_char_table_set (sub, c, val, UNIPROP_TABLE_P (table));
       if (ASCII_CHAR_P (c))
-        CSET (tbl, ascii, char_table_ascii (table));
+        set_char_table_ascii (table, char_table_ascii (table));
     }
-  return val;
 }
 
 static void
@@ -460,7 +455,7 @@ sub_char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val,
       if (c > to)
         break;
       if (from <= c && c + chars_in_block - 1 <= to)
-        sub_char_table_set_contents (table, i, val);
+        set_sub_char_table_contents (table, i, val);
       else
         {
           Lisp_Object sub = tbl->contents[i];
@@ -471,7 +466,7 @@ sub_char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val,
               else
                 {
                   sub = make_sub_char_table (depth + 1, c, sub);
-                  sub_char_table_set_contents (table, i, sub);
+                  set_sub_char_table_contents (table, i, sub);
                 }
             }
           sub_char_table_set_range (sub, from, to, val, is_uniprop);
@@ -480,7 +475,7 @@ sub_char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val,
 }
 
 
-Lisp_Object
+void
 char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val)
 {
   struct Lisp_Char_Table *tbl = XCHAR_TABLE (table);
@@ -499,22 +494,21 @@ char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val)
           if (c > to)
             break;
           if (from <= c && c + chartab_chars[0] - 1 <= to)
-            char_table_set_contents (table, i, val);
+            set_char_table_contents (table, i, val);
           else
             {
               Lisp_Object sub = tbl->contents[i];
               if (! SUB_CHAR_TABLE_P (sub))
                 {
                   sub = make_sub_char_table (1, i * chartab_chars[0], sub);
-                  char_table_set_contents (table, i, sub);
+                  set_char_table_contents (table, i, sub);
                 }
               sub_char_table_set_range (sub, from, to, val, is_uniprop);
             }
         }
       if (ASCII_CHAR_P (from))
-        CSET (tbl, ascii, char_table_ascii (table));
+        set_char_table_ascii (table, char_table_ascii (table));
     }
-  return val;
 }
 
 
@@ -562,7 +556,7 @@ Return PARENT.  PARENT must be either nil or another char-table.  */)
           error ("Attempt to make a chartable be its own parent");
     }
 
-  CSET (XCHAR_TABLE (char_table), parent, parent);
+  set_char_table_parent (char_table, parent);
 
   return parent;
 }
@@ -593,7 +587,7 @@ DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot,
       || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table)))
     args_out_of_range (char_table, n);
 
-  char_table_set_extras (char_table, XINT (n), value);
+  set_char_table_extras (char_table, XINT (n), value);
   return value;
 }
 
@@ -640,12 +634,12 @@ or a character code.  Return VALUE.  */)
     {
       int i;
 
-      CSET (XCHAR_TABLE (char_table), ascii, value);
+      set_char_table_ascii (char_table, value);
       for (i = 0; i < chartab_size[0]; i++)
-        char_table_set_contents (char_table, i, value);
+        set_char_table_contents (char_table, i, value);
     }
   else if (EQ (range, Qnil))
-    CSET (XCHAR_TABLE (char_table), defalt, value);
+    set_char_table_defalt (char_table, value);
   else if (CHARACTERP (range))
     char_table_set (char_table, XINT (range), value);
   else if (CONSP (range))
@@ -695,7 +689,7 @@ optimize_sub_char_table (Lisp_Object table, Lisp_Object test)
   if (SUB_CHAR_TABLE_P (elt))
     {
       elt = optimize_sub_char_table (elt, test);
-      sub_char_table_set_contents (table, 0, elt);
+      set_sub_char_table_contents (table, 0, elt);
     }
   optimizable = SUB_CHAR_TABLE_P (elt) ? 0 : 1;
   for (i = 1; i < chartab_size[depth]; i++)
@@ -704,7 +698,7 @@ optimize_sub_char_table (Lisp_Object table, Lisp_Object test)
       if (SUB_CHAR_TABLE_P (this))
         {
           this = optimize_sub_char_table (this, test);
-          sub_char_table_set_contents (table, i, this);
+          set_sub_char_table_contents (table, i, this);
         }
       if (optimizable
           && (NILP (test) ? NILP (Fequal (this, elt)) /* defaults to `equal'. */
@@ -732,11 +726,11 @@ equivalent and can be merged.  It defaults to `equal'.  */)
     {
       elt = XCHAR_TABLE (char_table)->contents[i];
       if (SUB_CHAR_TABLE_P (elt))
-        char_table_set_contents
+        set_char_table_contents
           (char_table, i, optimize_sub_char_table (elt, test));
     }
   /* Reset the `ascii' cache, in case it got optimized away.  */
-  CSET (XCHAR_TABLE (char_table), ascii, char_table_ascii (char_table));
+  set_char_table_ascii (char_table, char_table_ascii (char_table));
 
   return Qnil;
 }
@@ -828,9 +822,9 @@ map_sub_char_table (void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object),
 
                       /* This is to get a value of FROM in PARENT
                          without checking the parent of PARENT.  */
-                      CSET (XCHAR_TABLE (parent), parent, Qnil);
+                      set_char_table_parent (parent, Qnil);
                       val = CHAR_TABLE_REF (parent, from);
-                      CSET (XCHAR_TABLE (parent), parent, temp);
+                      set_char_table_parent (parent, temp);
                       XSETCDR (range, make_number (c - 1));
                       val = map_sub_char_table (c_function, function,
                                                 parent, arg, val, range,
@@ -910,9 +904,9 @@ map_char_table (void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object),
       temp = XCHAR_TABLE (parent)->parent;
       /* This is to get a value of FROM in PARENT without checking the
          parent of PARENT.  */
-      CSET (XCHAR_TABLE (parent), parent, Qnil);
+      set_char_table_parent (parent, Qnil);
       val = CHAR_TABLE_REF (parent, from);
-      CSET (XCHAR_TABLE (parent), parent, temp);
+      set_char_table_parent (parent, temp);
       val = map_sub_char_table (c_function, function, parent, arg, val, range,
                                 parent);
       table = parent;
@@ -1149,7 +1143,7 @@ uniprop_table_uncompress (Lisp_Object table, int idx)
   Lisp_Object sub = make_sub_char_table (3, min_char, Qnil);
   const unsigned char *p, *pend;
 
-  sub_char_table_set_contents (table, idx, sub);
+  set_sub_char_table_contents (table, idx, sub);
   p = SDATA (val), pend = p + SBYTES (val);
   if (*p == 1)
     {
@@ -1159,7 +1153,7 @@ uniprop_table_uncompress (Lisp_Object table, int idx)
       while (p < pend && idx < chartab_chars[2])
         {
           int v = STRING_CHAR_ADVANCE (p);
-          sub_char_table_set_contents
+          set_sub_char_table_contents
             (sub, idx++, v > 0 ? make_number (v) : Qnil);
         }
     }
@@ -1185,7 +1179,7 @@ uniprop_table_uncompress (Lisp_Object table, int idx)
                 }
             }
           while (count-- > 0)
-            sub_char_table_set_contents (sub, idx++, make_number (v));
+            set_sub_char_table_contents (sub, idx++, make_number (v));
         }
     }
 /* It seems that we don't need this function because C code won't need
@@ -1288,7 +1282,7 @@ uniprop_encode_value_numeric (Lisp_Object table, Lisp_Object value)
 
       args[0] = XCHAR_TABLE (table)->extras[4];
       args[1] = Fmake_vector (make_number (1), value);
-      char_table_set_extras (table, 4, Fvconcat (2, args));
+      set_char_table_extras (table, 4, Fvconcat (2, args));
     }
   return make_number (i);
 }
@@ -1350,7 +1344,7 @@ uniprop_table (Lisp_Object prop)
       : ! NILP (val))
     return Qnil;
   /* Prepare ASCII values in advance for CHAR_TABLE_REF.  */
-  CSET (XCHAR_TABLE (table), ascii, char_table_ascii (table));
+  set_char_table_ascii (table, char_table_ascii (table));
   return table;
 }
 
diff --git a/src/cmds.c b/src/cmds.c
index 24778fae6e3..b416135ee9e 100644
--- a/src/cmds.c
+++ b/src/cmds.c
@@ -301,7 +301,7 @@ At the end, it runs `post-self-insert-hook'.  */)
          added be explicit calls to undo-boundary.  */
       && EQ (BVAR (current_buffer, undo_list), last_undo_boundary))
     /* Remove the undo_boundary that was just pushed.  */
-    BSET (current_buffer, undo_list, XCDR (BVAR (current_buffer, undo_list)));
+    bset_undo_list (current_buffer, XCDR (BVAR (current_buffer, undo_list)));
 
   /* Barf if the key that invoked this was not a character.  */
   if (!CHARACTERP (last_command_event))
diff --git a/src/coding.c b/src/coding.c
index c601a18b26e..971686dc180 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -7112,7 +7112,7 @@ decode_coding (struct coding_system *coding)
         record_first_change ();
 
       undo_list = BVAR (current_buffer, undo_list);
-      BSET (current_buffer, undo_list, Qt);
+      bset_undo_list (current_buffer, Qt);
     }
 
   coding->consumed = coding->consumed_char = 0;
@@ -7209,7 +7209,7 @@ decode_coding (struct coding_system *coding)
     decode_eol (coding);
   if (BUFFERP (coding->dst_object))
     {
-      BSET (current_buffer, undo_list, undo_list);
+      bset_undo_list (current_buffer, undo_list);
       record_insert (coding->dst_pos, coding->produced_char);
     }
   return coding->result;
@@ -7577,8 +7577,8 @@ make_conversion_work_buffer (int multibyte)
      doesn't compile new regexps.  */
   Fset (Fmake_local_variable (Qinhibit_modification_hooks), Qt);
   Ferase_buffer ();
-  BSET (current_buffer, undo_list, Qt);
-  BSET (current_buffer, enable_multibyte_characters, multibyte ? Qt : Qnil);
+  bset_undo_list (current_buffer, Qt);
+  bset_enable_multibyte_characters (current_buffer, multibyte ? Qt : Qnil);
   set_buffer_internal (current);
   return workbuf;
 }
@@ -9302,10 +9302,10 @@ DEFUN ("set-terminal-coding-system-internal", Fset_terminal_coding_system_intern
   terminal_coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK;
   terminal_coding->src_multibyte = 1;
   terminal_coding->dst_multibyte = 0;
-  if (terminal_coding->common_flags & CODING_REQUIRE_ENCODING_MASK)
-    TSET (term, charset_list, coding_charset_list (terminal_coding));
-  else
-    TSET (term, charset_list, Fcons (make_number (charset_ascii), Qnil));
+  tset_charset_list
+    (term, (terminal_coding->common_flags & CODING_REQUIRE_ENCODING_MASK
+            ? coding_charset_list (terminal_coding)
+            : Fcons (make_number (charset_ascii), Qnil)));
   return Qnil;
 }
 
diff --git a/src/conf_post.h b/src/conf_post.h
index ead7298e98d..f90ef90fb83 100644
--- a/src/conf_post.h
+++ b/src/conf_post.h
@@ -178,6 +178,9 @@ You lose; /* Emacs for DOS must be compiled with DJGPP */
 #endif
 
 #include <string.h>
+/* If you think about removing the line below, note that the
+   MS-Windows build relies on it for declaration of 'environ' needed
+   by a few source files.  */
 #include <stdlib.h>
 
 #if __GNUC__ >= 3  /* On GCC 3.0 we might get a warning.  */
diff --git a/src/data.c b/src/data.c
index d0ef5734abc..f812c280b40 100644
--- a/src/data.c
+++ b/src/data.c
@@ -543,7 +543,7 @@ DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0,
         else
           {
             swap_in_symval_forwarding (sym, blv);
-            valcontents = BLV_VALUE (blv);
+            valcontents = blv_value (blv);
           }
         break;
       }
@@ -847,7 +847,7 @@ do_symval_forwarding (register union Lisp_Fwd *valcontents)
       return *XOBJFWD (valcontents)->objvar;
 
     case Lisp_Fwd_Buffer_Obj:
-      return PER_BUFFER_VALUE (current_buffer,
+      return per_buffer_value (current_buffer,
                                XBUFFER_OBJFWD (valcontents)->offset);
 
     case Lisp_Fwd_Kboard_Obj:
@@ -919,7 +919,7 @@ store_symval_forwarding (union Lisp_Fwd *valcontents, register Lisp_Object newva
               b = XBUFFER (lbuf);
 
               if (! PER_BUFFER_VALUE_P (b, idx))
-                PER_BUFFER_VALUE (b, offset) = newval;
+                set_per_buffer_value (b, offset, newval);
             }
         }
       break;
@@ -937,7 +937,7 @@ store_symval_forwarding (union Lisp_Fwd *valcontents, register Lisp_Object newva
 
         if (buf == NULL)
           buf = current_buffer;
-        PER_BUFFER_VALUE (buf, offset) = newval;
+        set_per_buffer_value (buf, offset, newval);
       }
       break;
 
@@ -964,16 +964,16 @@ swap_in_global_binding (struct Lisp_Symbol *symbol)
 
   /* Unload the previously loaded binding.  */
   if (blv->fwd)
-    SET_BLV_VALUE (blv, do_symval_forwarding (blv->fwd));
+    set_blv_value (blv, do_symval_forwarding (blv->fwd));
 
   /* Select the global binding in the symbol.  */
-  blv->valcell = blv->defcell;
+  set_blv_valcell (blv, blv->defcell);
   if (blv->fwd)
     store_symval_forwarding (blv->fwd, XCDR (blv->defcell), NULL);
 
   /* Indicate that the global binding is set up now.  */
-  blv->where = Qnil;
-  SET_BLV_FOUND (blv, 0);
+  set_blv_where (blv, Qnil);
+  set_blv_found (blv, 0);
 }
 
 /* Set up the buffer-local symbol SYMBOL for validity in the current buffer.
@@ -1001,7 +1001,7 @@ swap_in_symval_forwarding (struct Lisp_Symbol *symbol, struct Lisp_Buffer_Local_
       /* Unload the previously loaded binding.  */
       tem1 = blv->valcell;
       if (blv->fwd)
-        SET_BLV_VALUE (blv, do_symval_forwarding (blv->fwd));
+        set_blv_value (blv, do_symval_forwarding (blv->fwd));
       /* Choose the new binding.  */
       {
         Lisp_Object var;
@@ -1009,7 +1009,7 @@ swap_in_symval_forwarding (struct Lisp_Symbol *symbol, struct Lisp_Buffer_Local_
         if (blv->frame_local)
           {
             tem1 = assq_no_quit (var, XFRAME (selected_frame)->param_alist);
-            blv->where = selected_frame;
+            set_blv_where (blv, selected_frame);
           }
         else
           {
@@ -1021,9 +1021,9 @@ swap_in_symval_forwarding (struct Lisp_Symbol *symbol, struct Lisp_Buffer_Local_
         tem1 = blv->defcell;
 
       /* Load the new binding.  */
-      blv->valcell = tem1;
+      set_blv_valcell (blv, tem1);
       if (blv->fwd)
-        store_symval_forwarding (blv->fwd, BLV_VALUE (blv), NULL);
+        store_symval_forwarding (blv->fwd, blv_value (blv), NULL);
     }
 }
 
@@ -1050,7 +1050,7 @@ find_symbol_value (Lisp_Object symbol)
       {
         struct Lisp_Buffer_Local_Value *blv = SYMBOL_BLV (sym);
         swap_in_symval_forwarding (sym, blv);
-        return blv->fwd ? do_symval_forwarding (blv->fwd) : BLV_VALUE (blv);
+        return blv->fwd ? do_symval_forwarding (blv->fwd) : blv_value (blv);
       }
       /* FALLTHROUGH */
     case SYMBOL_FORWARDED:
@@ -1175,7 +1175,7 @@ set_internal (register Lisp_Object symbol, register Lisp_Object newval, register
 
             /* Write out `realvalue' to the old loaded binding.  */
             if (blv->fwd)
-              SET_BLV_VALUE (blv, do_symval_forwarding (blv->fwd));
+              set_blv_value (blv, do_symval_forwarding (blv->fwd));
 
             /* Find the new binding.  */
             XSETSYMBOL (symbol, sym); /* May have changed via aliasing.  */
@@ -1183,7 +1183,7 @@ set_internal (register Lisp_Object symbol, register Lisp_Object newval, register
                           (blv->frame_local
                            ? XFRAME (where)->param_alist
                            : BVAR (XBUFFER (where), local_var_alist)));
-            blv->where = where;
+            set_blv_where (blv, where);
             blv->found = 1;
 
             if (NILP (tem1))
@@ -1213,17 +1213,18 @@ set_internal (register Lisp_Object symbol, register Lisp_Object newval, register
                        bindings, not for frame-local bindings.  */
                     eassert (!blv->frame_local);
                     tem1 = Fcons (symbol, XCDR (blv->defcell));
-                    BSET (XBUFFER (where), local_var_alist,
-                          Fcons (tem1, BVAR (XBUFFER (where), local_var_alist)));
+                    bset_local_var_alist
+                      (XBUFFER (where),
+                       Fcons (tem1, BVAR (XBUFFER (where), local_var_alist)));
                   }
               }
 
             /* Record which binding is now loaded.  */
-            blv->valcell = tem1;
+            set_blv_valcell (blv, tem1);
           }
 
         /* Store the new value in the cons cell.  */
-        SET_BLV_VALUE (blv, newval);
+        set_blv_value (blv, newval);
 
         if (blv->fwd)
           {
@@ -1308,7 +1309,7 @@ default_value (Lisp_Object symbol)
           {
             int offset = XBUFFER_OBJFWD (valcontents)->offset;
             if (PER_BUFFER_IDX (offset) != 0)
-              return PER_BUFFER_DEFAULT (offset);
+              return per_buffer_default (offset);
           }
 
         /* For other variables, get the current value.  */
@@ -1395,7 +1396,7 @@ for this variable.  */)
             int offset = XBUFFER_OBJFWD (valcontents)->offset;
             int idx = PER_BUFFER_IDX (offset);
 
-            PER_BUFFER_DEFAULT (offset) = value;
+            set_per_buffer_default (offset, value);
 
             /* If this variable is not always local in all buffers,
                set it in the buffers that don't nominally have a local value.  */
@@ -1405,7 +1406,7 @@ for this variable.  */)
 
                 FOR_EACH_BUFFER (b)
                   if (!PER_BUFFER_VALUE_P (b, idx))
-                    PER_BUFFER_VALUE (b, offset) = value;
+                    set_per_buffer_value (b, offset, value);
               }
             return value;
           }
@@ -1479,12 +1480,12 @@ make_blv (struct Lisp_Symbol *sym, int forwarded, union Lisp_Val_Fwd valcontents
   eassert (!(forwarded && BUFFER_OBJFWDP (valcontents.fwd)));
   eassert (!(forwarded && KBOARD_OBJFWDP (valcontents.fwd)));
   blv->fwd = forwarded ? valcontents.fwd : NULL;
-  blv->where = Qnil;
+  set_blv_where (blv, Qnil);
   blv->frame_local = 0;
   blv->local_if_set = 0;
-  blv->defcell = tem;
-  blv->valcell = tem;
-  SET_BLV_FOUND (blv, 0);
+  set_blv_defcell (blv, tem);
+  set_blv_valcell (blv, tem);
+  set_blv_found (blv, 0);
   return blv;
 }
 
@@ -1653,17 +1654,16 @@ Instead, use `add-hook' and specify t for the LOCAL argument.  */)
          default value.  */
       find_symbol_value (variable);
 
-      BSET (current_buffer, local_var_alist,
-            Fcons (Fcons (variable, XCDR (blv->defcell)),
-                   BVAR (current_buffer, local_var_alist)));
+      bset_local_var_alist
+        (current_buffer,
+         Fcons (Fcons (variable, XCDR (blv->defcell)),
+                BVAR (current_buffer, local_var_alist)));
 
       /* Make sure symbol does not think it is set up for this buffer;
          force it to look once again for this buffer's value.  */
       if (current_buffer == XBUFFER (blv->where))
-        blv->where = Qnil;
-      /* blv->valcell = blv->defcell;
-       * SET_BLV_FOUND (blv, 0); */
-      blv->found = 0;
+        set_blv_where (blv, Qnil);
+      set_blv_found (blv, 0);
     }
 
   /* If the symbol forwards into a C variable, then load the binding
@@ -1705,8 +1705,8 @@ From now on the default value will apply in this buffer.  Return VARIABLE.  */)
             if (idx > 0)
               {
                 SET_PER_BUFFER_VALUE_P (current_buffer, idx, 0);
-                PER_BUFFER_VALUE (current_buffer, offset)
-                  = PER_BUFFER_DEFAULT (offset);
+                set_per_buffer_value (current_buffer, offset,
+                                      per_buffer_default (offset));
               }
           }
         return variable;
@@ -1723,8 +1723,9 @@ From now on the default value will apply in this buffer.  Return VARIABLE.  */)
   XSETSYMBOL (variable, sym);   /* Propagate variable indirection.  */
   tem = Fassq (variable, BVAR (current_buffer, local_var_alist));
   if (!NILP (tem))
-    BSET (current_buffer, local_var_alist,
-          Fdelq (tem, BVAR (current_buffer, local_var_alist)));
+    bset_local_var_alist
+      (current_buffer,
+       Fdelq (tem, BVAR (current_buffer, local_var_alist)));
 
   /* If the symbol is set up with the current buffer's binding
      loaded, recompute its value.  We have to do it now, or else
@@ -1733,9 +1734,7 @@ From now on the default value will apply in this buffer.  Return VARIABLE.  */)
     Lisp_Object buf; XSETBUFFER (buf, current_buffer);
     if (EQ (buf, blv->where))
       {
-        blv->where = Qnil;
-        /* blv->valcell = blv->defcell;
-         * SET_BLV_FOUND (blv, 0); */
+        set_blv_where (blv, Qnil);
         blv->found = 0;
         find_symbol_value (variable);
       }
@@ -1857,11 +1856,11 @@ BUFFER defaults to the current buffer.  */)
             if (EQ (variable, XCAR (elt)))
               {
                 eassert (!blv->frame_local);
-                eassert (BLV_FOUND (blv) || !EQ (blv->where, tmp));
+                eassert (blv_found (blv) || !EQ (blv->where, tmp));
                 return Qt;
               }
           }
-        eassert (!BLV_FOUND (blv) || !EQ (blv->where, tmp));
+        eassert (!blv_found (blv) || !EQ (blv->where, tmp));
         return Qnil;
       }
     case SYMBOL_FORWARDED:
@@ -1951,7 +1950,7 @@ If the current binding is global (the default), the value is nil.  */)
       if (!NILP (Flocal_variable_p (variable, Qnil)))
         return Fcurrent_buffer ();
       else if (sym->redirect == SYMBOL_LOCALIZED
-               && BLV_FOUND (SYMBOL_BLV (sym)))
+               && blv_found (SYMBOL_BLV (sym)))
         return SYMBOL_BLV (sym)->where;
       else
         return Qnil;
diff --git a/src/dbusbind.c b/src/dbusbind.c
index c1b1310454c..f63f2948304 100644
--- a/src/dbusbind.c
+++ b/src/dbusbind.c
@@ -1039,11 +1039,13 @@ xd_remove_watch (DBusWatch *watch, void *data)
     return;
 
   /* Unset session environment.  */
+#if 0
   if (XSYMBOL (QCdbus_session_bus) == data)
     {
-      //      XD_DEBUG_MESSAGE ("unsetenv DBUS_SESSION_BUS_ADDRESS");
-      //      unsetenv ("DBUS_SESSION_BUS_ADDRESS");
+      XD_DEBUG_MESSAGE ("unsetenv DBUS_SESSION_BUS_ADDRESS");
+      unsetenv ("DBUS_SESSION_BUS_ADDRESS");
     }
+#endif
 
   if (flags & DBUS_WATCH_WRITABLE)
     delete_write_fd (fd);
diff --git a/src/dispnew.c b/src/dispnew.c
index 3288faba61b..ce7c4ebcb4c 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -621,7 +621,7 @@ adjust_glyph_matrix (struct window *w, struct glyph_matrix *matrix, int x, int y
                  are invalidated below.  */
               if (INTEGERP (w->window_end_vpos)
                   && XFASTINT (w->window_end_vpos) >= i)
-                WSET (w, window_end_valid, Qnil);
+                wset_window_end_valid (w, Qnil);
 
               while (i < matrix->nrows)
                 matrix->rows[i++].enabled_p = 0;
@@ -878,7 +878,7 @@ clear_window_matrices (struct window *w, int desired_p)
           else
             {
               clear_glyph_matrix (w->current_matrix);
-              WSET (w, window_end_valid, Qnil);
+              wset_window_end_valid (w, Qnil);
             }
         }
 
@@ -1887,14 +1887,14 @@ adjust_frame_glyphs_initially (void)
   int top_margin = FRAME_TOP_MARGIN (sf);
 
   /* Do it for the root window.  */
-  WSET (root, top_line, make_number (top_margin));
-  WSET (root, total_lines, make_number (frame_lines - 1 - top_margin));
-  WSET (root, total_cols, make_number (frame_cols));
+  wset_top_line (root, make_number (top_margin));
+  wset_total_lines (root, make_number (frame_lines - 1 - top_margin));
+  wset_total_cols (root, make_number (frame_cols));
 
   /* Do it for the mini-buffer window.  */
-  WSET (mini, top_line, make_number (frame_lines - 1));
-  WSET (mini, total_lines, make_number (1));
-  WSET (mini, total_cols, make_number (frame_cols));
+  wset_top_line (mini, make_number (frame_lines - 1));
+  wset_total_lines (mini, make_number (1));
+  wset_total_cols (mini, make_number (frame_cols));
 
   adjust_frame_glyphs (sf);
   glyphs_initialized_initially_p = 1;
@@ -2166,10 +2166,10 @@ adjust_frame_glyphs_for_window_redisplay (struct frame *f)
     if (NILP (f->menu_bar_window))
       {
         Lisp_Object frame;
-        FSET (f, menu_bar_window, make_window ());
+        fset_menu_bar_window (f, make_window ());
         w = XWINDOW (f->menu_bar_window);
         XSETFRAME (frame, f);
-        WSET (w, frame, frame);
+        wset_frame (w, frame);
         w->pseudo_window_p = 1;
       }
     else
@@ -2177,10 +2177,10 @@ adjust_frame_glyphs_for_window_redisplay (struct frame *f)
 
     /* Set window dimensions to frame dimensions and allocate or
        adjust glyph matrices of W.  */
-    WSET (w, top_line, make_number (0));
-    WSET (w, left_col, make_number (0));
-    WSET (w, total_lines, make_number (FRAME_MENU_BAR_LINES (f)));
-    WSET (w, total_cols, make_number (FRAME_TOTAL_COLS (f)));
+    wset_top_line (w, make_number (0));
+    wset_left_col (w, make_number (0));
+    wset_total_lines (w, make_number (FRAME_MENU_BAR_LINES (f)));
+    wset_total_cols (w, make_number (FRAME_TOTAL_COLS (f)));
     allocate_matrices_for_window_redisplay (w);
   }
 #endif /* not USE_X_TOOLKIT && not USE_GTK */
@@ -2194,19 +2194,19 @@ adjust_frame_glyphs_for_window_redisplay (struct frame *f)
     if (NILP (f->tool_bar_window))
       {
         Lisp_Object frame;
-        FSET (f, tool_bar_window, make_window ());
+        fset_tool_bar_window (f, make_window ());
         w = XWINDOW (f->tool_bar_window);
         XSETFRAME (frame, f);
-        WSET (w, frame, frame);
+        wset_frame (w, frame);
         w->pseudo_window_p = 1;
       }
     else
       w = XWINDOW (f->tool_bar_window);
 
-    WSET (w, top_line, make_number (FRAME_MENU_BAR_LINES (f)));
-    WSET (w, left_col, make_number (0));
-    WSET (w, total_lines, make_number (FRAME_TOOL_BAR_LINES (f)));
-    WSET (w, total_cols, make_number (FRAME_TOTAL_COLS (f)));
+    wset_top_line (w, make_number (FRAME_MENU_BAR_LINES (f)));
+    wset_left_col (w, make_number (0));
+    wset_total_lines (w, make_number (FRAME_TOOL_BAR_LINES (f)));
+    wset_total_cols (w, make_number (FRAME_TOTAL_COLS (f)));
     allocate_matrices_for_window_redisplay (w);
   }
 #endif
@@ -2272,7 +2272,7 @@ free_glyphs (struct frame *f)
           free_glyph_matrix (w->desired_matrix);
           free_glyph_matrix (w->current_matrix);
           w->desired_matrix = w->current_matrix = NULL;
-          FSET (f, menu_bar_window, Qnil);
+          fset_menu_bar_window (f, Qnil);
         }
 
       /* Free the tool bar window and its glyph matrices.  */
@@ -2282,7 +2282,7 @@ free_glyphs (struct frame *f)
           free_glyph_matrix (w->desired_matrix);
           free_glyph_matrix (w->current_matrix);
           w->desired_matrix = w->current_matrix = NULL;
-          FSET (f, tool_bar_window, Qnil);
+          fset_tool_bar_window (f, Qnil);
         }
 
       /* Release frame glyph matrices.  Reset fields to zero in
@@ -3220,8 +3220,8 @@ update_frame (struct frame *f, int force_p, int inhibit_hairy_id_p)
               /* Swap tool-bar strings.  We swap because we want to
                  reuse strings.  */
               tem = f->current_tool_bar_string;
-              FSET (f, current_tool_bar_string, f->desired_tool_bar_string);
-              FSET (f, desired_tool_bar_string, tem);
+              fset_current_tool_bar_string (f, f->desired_tool_bar_string);
+              fset_desired_tool_bar_string (f, tem);
             }
         }
 
@@ -5744,7 +5744,7 @@ change_frame_size_1 (register struct frame *f, int newheight, int newwidth, int
         FrameCols (FRAME_TTY (f)) = newwidth;
 
       if (WINDOWP (f->tool_bar_window))
-        WSET (XWINDOW (f->tool_bar_window), total_cols, make_number (newwidth));
+        wset_total_cols (XWINDOW (f->tool_bar_window), make_number (newwidth));
     }
 
   FRAME_LINES (f) = newheight;
@@ -6044,8 +6044,7 @@ pass nil for VARIABLE.  */)
   (Lisp_Object variable)
 {
   Lisp_Object state, tail, frame, buf;
-  Lisp_Object *vecp, *end;
-  ptrdiff_t n;
+  ptrdiff_t n, idx;
 
   if (! NILP (variable))
     {
@@ -6057,18 +6056,16 @@ pass nil for VARIABLE.  */)
   else
     state = frame_and_buffer_state;
 
-  vecp = XVECTOR (state)->contents;
-  end = vecp + ASIZE (state);
-
+  idx = 0;
   FOR_EACH_FRAME (tail, frame)
     {
-      if (vecp == end)
+      if (idx == ASIZE (state))
         goto changed;
-      if (!EQ (*vecp++, frame))
+      if (!EQ (AREF (state, idx++), frame))
         goto changed;
-      if (vecp == end)
+      if (idx == ASIZE (state))
         goto changed;
-      if (!EQ (*vecp++, XFRAME (frame)->name))
+      if (!EQ (AREF (state, idx++), XFRAME (frame)->name))
         goto changed;
     }
   /* Check that the buffer info matches.  */
@@ -6078,23 +6075,23 @@ pass nil for VARIABLE.  */)
       /* Ignore buffers that aren't included in buffer lists.  */
       if (SREF (BVAR (XBUFFER (buf), name), 0) == ' ')
         continue;
-      if (vecp == end)
+      if (idx == ASIZE (state))
         goto changed;
-      if (!EQ (*vecp++, buf))
+      if (!EQ (AREF (state, idx++), buf))
         goto changed;
-      if (vecp == end)
+      if (idx == ASIZE (state))
         goto changed;
-      if (!EQ (*vecp++, BVAR (XBUFFER (buf), read_only)))
+      if (!EQ (AREF (state, idx++), BVAR (XBUFFER (buf), read_only)))
         goto changed;
-      if (vecp == end)
+      if (idx == ASIZE (state))
         goto changed;
-      if (!EQ (*vecp++, Fbuffer_modified_p (buf)))
+      if (!EQ (AREF (state, idx++), Fbuffer_modified_p (buf)))
         goto changed;
     }
-  if (vecp == end)
+  if (idx == ASIZE (state))
     goto changed;
   /* Detect deletion of a buffer at the end of the list.  */
-  if (EQ (*vecp, Qlambda))
+  if (EQ (AREF (state, idx), Qlambda))
     return Qnil;
 
   /* Come here if we decide the data has changed.  */
@@ -6121,11 +6118,13 @@ pass nil for VARIABLE.  */)
     }
 
   /* Record the new data in the (possibly reallocated) vector.  */
-  vecp = XVECTOR (state)->contents;
+  idx = 0;
   FOR_EACH_FRAME (tail, frame)
     {
-      *vecp++ = frame;
-      *vecp++ = XFRAME (frame)->name;
+      ASET (state, idx, frame);
+      idx++;
+      ASET (state, idx, XFRAME (frame)->name);
+      idx++;
     }
   for (tail = Vbuffer_alist; CONSP (tail); tail = XCDR (tail))
     {
@@ -6133,19 +6132,23 @@ pass nil for VARIABLE.  */)
       /* Ignore buffers that aren't included in buffer lists.  */
       if (SREF (BVAR (XBUFFER (buf), name), 0) == ' ')
         continue;
-      *vecp++ = buf;
-      *vecp++ = BVAR (XBUFFER (buf), read_only);
-      *vecp++ = Fbuffer_modified_p (buf);
+      ASET (state, idx, buf);
+      idx++;
+      ASET (state, idx, BVAR (XBUFFER (buf), read_only));
+      idx++;
+      ASET (state, idx, Fbuffer_modified_p (buf));
+      idx++;
     }
   /* Fill up the vector with lambdas (always at least one).  */
-  *vecp++ = Qlambda;
-  while (vecp - XVECTOR (state)->contents
-         < ASIZE (state))
-    *vecp++ = Qlambda;
+  ASET (state, idx, Qlambda);
+  idx++;
+  while (idx < ASIZE (state))
+    {
+      ASET (state, idx, Qlambda);
+      idx++;
+    }
   /* Make sure we didn't overflow the vector.  */
-  if (vecp - XVECTOR (state)->contents
-      > ASIZE (state))
-    abort ();
+  eassert (idx <= ASIZE (state));
   return Qt;
 }
 
diff --git a/src/dosfns.c b/src/dosfns.c
index e3adf25d79f..21676f4b4f5 100644
--- a/src/dosfns.c
+++ b/src/dosfns.c
@@ -473,7 +473,7 @@ x_set_title (struct frame *f, Lisp_Object name)
 
   update_mode_lines = 1;
 
-  FSET (f, title, name);
+  fset_title (f, name);
 
   if (NILP (name))
     name = f->name;
diff --git a/src/editfns.c b/src/editfns.c
index b7feb733782..0bd632d14b7 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -58,10 +58,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "window.h"
 #include "blockinput.h"
 
-#ifndef USE_CRT_DLL
-extern char **environ;
-#endif
-
 #define TM_YEAR_BASE 1900
 
 #ifdef WINDOWSNT
@@ -881,7 +877,7 @@ save_excursion_restore (Lisp_Object info)
   info = XCDR (info);
   tem = XCAR (info);
   tem1 = BVAR (current_buffer, mark_active);
-  BSET (current_buffer, mark_active, tem);
+  bset_mark_active (current_buffer, tem);
 
   /* If mark is active now, and either was not active
      or was at a different place, run the activate hook.  */
@@ -2815,13 +2811,15 @@ determines whether case is significant or ignored.  */)
 static Lisp_Object
 subst_char_in_region_unwind (Lisp_Object arg)
 {
-  return BSET (current_buffer, undo_list, arg);
+  bset_undo_list (current_buffer, arg);
+  return arg;
 }
 
 static Lisp_Object
 subst_char_in_region_unwind_1 (Lisp_Object arg)
 {
-  return BSET (current_buffer, filename, arg);
+  bset_filename (current_buffer, arg);
+  return arg;
 }
 
 DEFUN ("subst-char-in-region", Fsubst_char_in_region,
@@ -2895,11 +2893,11 @@ Both characters must have the same length of multi-byte form.  */)
     {
       record_unwind_protect (subst_char_in_region_unwind,
                              BVAR (current_buffer, undo_list));
-      BSET (current_buffer, undo_list, Qt);
+      bset_undo_list (current_buffer, Qt);
       /* Don't do file-locking.  */
       record_unwind_protect (subst_char_in_region_unwind_1,
                              BVAR (current_buffer, filename));
-      BSET (current_buffer, filename, Qnil);
+      bset_filename (current_buffer, Qnil);
     }
 
   if (pos_byte < GPT_BYTE)
@@ -2981,7 +2979,7 @@ Both characters must have the same length of multi-byte form.  */)
                 INC_POS (pos_byte_next);
 
               if (! NILP (noundo))
-                BSET (current_buffer, undo_list, tem);
+                bset_undo_list (current_buffer, tem);
 
               UNGCPRO;
             }
@@ -3644,13 +3642,13 @@ usage: (format STRING &rest OBJECTS)  */)
   ptrdiff_t max_bufsize = STRING_BYTES_BOUND + 1;
   char *p;
   Lisp_Object buf_save_value IF_LINT (= {0});
-  register char *format, *end, *format_start;
+  char *format, *end, *format_start;
   ptrdiff_t formatlen, nchars;
-  /* Nonzero if the format is multibyte.  */
-  int multibyte_format = 0;
-  /* Nonzero if the output should be a multibyte string,
+  /* True if the format is multibyte.  */
+  bool multibyte_format = 0;
+  /* True if the output should be a multibyte string,
      which is true if any of the inputs is one.  */
-  int multibyte = 0;
+  bool multibyte = 0;
   /* When we make a multibyte string, we must pay attention to the
      byte combining problem, i.e., a byte may be combined with a
      multibyte character of the previous string.  This flag tells if we
@@ -3936,7 +3934,7 @@ usage: (format STRING &rest OBJECTS)  */)
 
                   /* If this argument has text properties, record where
                      in the result string it appears.  */
-                  if (string_get_intervals (args[n]))
+                  if (string_intervals (args[n]))
                     info[n].intervals = arg_intervals = 1;
 
                   continue;
@@ -4280,7 +4278,7 @@ usage: (format STRING &rest OBJECTS)  */)
      arguments has text properties, set up text properties of the
      result string.  */
 
-  if (string_get_intervals (args[0]) || arg_intervals)
+  if (string_intervals (args[0]) || arg_intervals)
     {
       Lisp_Object len, new_len, props;
       struct gcpro gcpro1;
@@ -4530,7 +4528,7 @@ Transposing beyond buffer boundaries is an error.  */)
   Lisp_Object buf;
 
   XSETBUFFER (buf, current_buffer);
-  cur_intv = buffer_get_intervals (current_buffer);
+  cur_intv = buffer_intervals (current_buffer);
 
   validate_region (&startr1, &endr1);
   validate_region (&startr2, &endr2);
diff --git a/src/emacs.c b/src/emacs.c
index 8d458c612cc..9e7efcabbf7 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -642,10 +642,6 @@ argmatch (char **argv, int argc, const char *sstr, const char *lstr,
 static void
 malloc_initialize_hook (void)
 {
-#ifndef USE_CRT_DLL
-  extern char **environ;
-#endif
-
   if (initialized)
     {
       if (!malloc_using_checking)
diff --git a/src/eval.c b/src/eval.c
index f3f14d60e1c..c41e3f54d4d 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -133,7 +133,21 @@ Lisp_Object inhibit_lisp_code;
 static Lisp_Object funcall_lambda (Lisp_Object, ptrdiff_t, Lisp_Object *);
 static int interactive_p (int);
 static Lisp_Object apply_lambda (Lisp_Object fun, Lisp_Object args);
-
+
+/* Functions to set Lisp_Object slots of struct specbinding.  */
+
+static inline void
+set_specpdl_symbol (Lisp_Object symbol)
+{
+  specpdl_ptr->symbol = symbol;
+}
+
+static inline void
+set_specpdl_old_value (Lisp_Object oldval)
+{
+  specpdl_ptr->old_value = oldval;
+}
+
 void
 init_eval_once (void)
 {
@@ -3136,8 +3150,8 @@ specbind (Lisp_Object symbol, Lisp_Object value)
     case SYMBOL_PLAINVAL:
       /* The most common case is that of a non-constant symbol with a
          trivial value.  Make that as fast as we can.  */
-      specpdl_ptr->symbol = symbol;
-      specpdl_ptr->old_value = SYMBOL_VAL (sym);
+      set_specpdl_symbol (symbol);
+      set_specpdl_old_value (SYMBOL_VAL (sym));
       specpdl_ptr->func = NULL;
       ++specpdl_ptr;
       if (!sym->constant)
@@ -3152,7 +3166,7 @@ specbind (Lisp_Object symbol, Lisp_Object value)
       {
         Lisp_Object ovalue = find_symbol_value (symbol);
         specpdl_ptr->func = 0;
-        specpdl_ptr->old_value = ovalue;
+        set_specpdl_old_value (ovalue);
 
         eassert (sym->redirect != SYMBOL_LOCALIZED
                  || (EQ (SYMBOL_BLV (sym)->where,
@@ -3169,12 +3183,12 @@ specbind (Lisp_Object symbol, Lisp_Object value)
             if (!NILP (Flocal_variable_p (symbol, Qnil)))
               {
                 eassert (sym->redirect != SYMBOL_LOCALIZED
-                         || (BLV_FOUND (SYMBOL_BLV (sym))
+                         || (blv_found (SYMBOL_BLV (sym))
                              && EQ (cur_buf, SYMBOL_BLV (sym)->where)));
                 where = cur_buf;
               }
             else if (sym->redirect == SYMBOL_LOCALIZED
-                     && BLV_FOUND (SYMBOL_BLV (sym)))
+                     && blv_found (SYMBOL_BLV (sym)))
               where = SYMBOL_BLV (sym)->where;
             else
               where = Qnil;
@@ -3186,7 +3200,7 @@ specbind (Lisp_Object symbol, Lisp_Object value)
                let_shadows_buffer_binding_p which is itself only used
                in set_internal for local_if_set.  */
             eassert (NILP (where) || EQ (where, cur_buf));
-            specpdl_ptr->symbol = Fcons (symbol, Fcons (where, cur_buf));
+            set_specpdl_symbol (Fcons (symbol, Fcons (where, cur_buf)));
 
             /* If SYMBOL is a per-buffer variable which doesn't have a
                buffer-local value here, make the `let' change the global
@@ -3203,7 +3217,7 @@ specbind (Lisp_Object symbol, Lisp_Object value)
               }
           }
         else
-          specpdl_ptr->symbol = symbol;
+          set_specpdl_symbol (symbol);
 
         specpdl_ptr++;
         set_internal (symbol, value, Qnil, 1);
@@ -3221,8 +3235,8 @@ record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg)
   if (specpdl_ptr == specpdl + specpdl_size)
     grow_specpdl ();
   specpdl_ptr->func = function;
-  specpdl_ptr->symbol = Qnil;
-  specpdl_ptr->old_value = arg;
+  set_specpdl_symbol (Qnil);
+  set_specpdl_old_value (arg);
   specpdl_ptr++;
 }
 
diff --git a/src/fileio.c b/src/fileio.c
index 5991a238ffc..6deca0bf1e1 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -766,7 +766,7 @@ filesystem tree, not (expand-file-name ".."  dirname).  */)
 #endif /* DOS_NT */
   ptrdiff_t length;
   Lisp_Object handler, result, handled_name;
-  int multibyte;
+  bool multibyte;
   Lisp_Object hdir;
 
   CHECK_STRING (name);
@@ -1566,7 +1566,7 @@ those `/' is discarded.  */)
   char *target = NULL;
   int total = 0;
   int substituted = 0;
-  int multibyte;
+  bool multibyte;
   char *xnm;
   Lisp_Object handler;
 
@@ -3146,12 +3146,12 @@ decide_coding_unwind (Lisp_Object unwind_data)
     set_buffer_internal (XBUFFER (buffer));
   adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE);
   adjust_overlays_for_delete (BEG, Z - BEG);
-  buffer_set_intervals (current_buffer, NULL);
+  set_buffer_intervals (current_buffer, NULL);
   TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
 
   /* Now we are safe to change the buffer's multibyteness directly.  */
-  BSET (current_buffer, enable_multibyte_characters, multibyte);
-  BSET (current_buffer, undo_list, undo_list);
+  bset_enable_multibyte_characters (current_buffer, multibyte);
+  bset_undo_list (current_buffer, undo_list);
 
   return Qnil;
 }
@@ -3487,16 +3487,16 @@ variable `last-coding-system-used' to the coding system actually used.  */)
                   buf = XBUFFER (workbuf);
 
                   delete_all_overlays (buf);
-                  BSET (buf, directory, BVAR (current_buffer, directory));
-                  BSET (buf, read_only, Qnil);
-                  BSET (buf, filename, Qnil);
-                  BSET (buf, undo_list, Qt);
+                  bset_directory (buf, BVAR (current_buffer, directory));
+                  bset_read_only (buf, Qnil);
+                  bset_filename (buf, Qnil);
+                  bset_undo_list (buf, Qt);
                   eassert (buf->overlays_before == NULL);
                   eassert (buf->overlays_after == NULL);
 
                   set_buffer_internal (buf);
                   Ferase_buffer ();
-                  BSET (buf, enable_multibyte_characters, Qnil);
+                  bset_enable_multibyte_characters (buf, Qnil);
 
                   insert_1_both ((char *) read_buf, nread, nread, 0, 0, 0);
                   TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
@@ -4105,8 +4105,8 @@ variable `last-coding-system-used' to the coding system actually used.  */)
           unwind_data = Fcons (BVAR (current_buffer, enable_multibyte_characters),
                                Fcons (BVAR (current_buffer, undo_list),
                                       Fcurrent_buffer ()));
-          BSET (current_buffer, enable_multibyte_characters, Qnil);
-          BSET (current_buffer, undo_list, Qt);
+          bset_enable_multibyte_characters (current_buffer, Qnil);
+          bset_undo_list (current_buffer, Qt);
           record_unwind_protect (decide_coding_unwind, unwind_data);
 
           if (inserted > 0 && ! NILP (Vset_auto_coding_function))
@@ -4154,7 +4154,7 @@ variable `last-coding-system-used' to the coding system actually used.  */)
           && NILP (replace))
         /* Visiting a file with these coding system makes the buffer
            unibyte. */
-        BSET (current_buffer, enable_multibyte_characters, Qnil);
+        bset_enable_multibyte_characters (current_buffer, Qnil);
     }
 
   coding.dst_multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
@@ -4197,13 +4197,13 @@ variable `last-coding-system-used' to the coding system actually used.  */)
   if (!NILP (visit))
     {
       if (!EQ (BVAR (current_buffer, undo_list), Qt) && !nochange)
-        BSET (current_buffer, undo_list, Qnil);
+        bset_undo_list (current_buffer, Qnil);
 
       if (NILP (handler))
         {
           current_buffer->modtime = mtime;
           current_buffer->modtime_size = st.st_size;
-          BSET (current_buffer, filename, orig_filename);
+          bset_filename (current_buffer, orig_filename);
         }
 
       SAVE_MODIFF = MODIFF;
@@ -4248,7 +4248,7 @@ variable `last-coding-system-used' to the coding system actually used.  */)
 
       /* Save old undo list and don't record undo for decoding.  */
       old_undo = BVAR (current_buffer, undo_list);
-      BSET (current_buffer, undo_list, Qt);
+      bset_undo_list (current_buffer, Qt);
 
       if (NILP (replace))
         {
@@ -4340,7 +4340,7 @@ variable `last-coding-system-used' to the coding system actually used.  */)
 
       if (NILP (visit))
         {
-          BSET (current_buffer, undo_list, old_undo);
+          bset_undo_list (current_buffer, old_undo);
           if (CONSP (old_undo) && inserted != old_inserted)
             {
               /* Adjust the last undo record for the size change during
@@ -4355,7 +4355,7 @@ variable `last-coding-system-used' to the coding system actually used.  */)
       else
         /* If undo_list was Qt before, keep it that way.
            Otherwise start with an empty undo_list.  */
-        BSET (current_buffer, undo_list, EQ (old_undo, Qt) ? Qt : Qnil);
+        bset_undo_list (current_buffer, EQ (old_undo, Qt) ? Qt : Qnil);
 
       unbind_to (count1, Qnil);
     }
@@ -4595,7 +4595,7 @@ This calls `write-region-annotate-functions' at the start, and
         {
           SAVE_MODIFF = MODIFF;
           XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
-          BSET (current_buffer, filename, visit_file);
+          bset_filename (current_buffer, visit_file);
         }
       UNGCPRO;
       return val;
@@ -4811,7 +4811,7 @@ This calls `write-region-annotate-functions' at the start, and
     {
       SAVE_MODIFF = MODIFF;
       XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
-      BSET (current_buffer, filename, visit_file);
+      bset_filename (current_buffer, visit_file);
       update_mode_lines++;
     }
   else if (quietly)
@@ -5306,7 +5306,7 @@ A non-nil CURRENT-ONLY argument means save only current buffer.  */)
   FILE *stream = NULL;
   ptrdiff_t count = SPECPDL_INDEX ();
   int orig_minibuffer_auto_raise = minibuffer_auto_raise;
-  int old_message_p = 0;
+  bool old_message_p = 0;
   struct gcpro gcpro1, gcpro2;
 
   if (max_specpdl_size < specpdl_size + 40)
diff --git a/src/fns.c b/src/fns.c
index 039c208b0d3..3225fefc5e3 100644
--- a/src/fns.c
+++ b/src/fns.c
@@ -628,7 +628,7 @@ concat (ptrdiff_t nargs, Lisp_Object *args,
           ptrdiff_t thislen_byte = SBYTES (this);
 
           memcpy (SDATA (val) + toindex_byte, SDATA (this), SBYTES (this));
-          if (string_get_intervals (this))
+          if (string_intervals (this))
             {
               textprops[num_textprops].argnum = argnum;
               textprops[num_textprops].from = 0;
@@ -640,7 +640,7 @@ concat (ptrdiff_t nargs, Lisp_Object *args,
       /* Copy a single-byte string to a multibyte string.  */
       else if (STRINGP (this) && STRINGP (val))
         {
-          if (string_get_intervals (this))
+          if (string_intervals (this))
             {
               textprops[num_textprops].argnum = argnum;
               textprops[num_textprops].from = 0;
@@ -1060,7 +1060,7 @@ If you're not sure, whether to use `string-as-multibyte' or
         str_as_multibyte (SDATA (new_string), nbytes,
                           SBYTES (string), NULL);
       string = new_string;
-      string_set_intervals (string, NULL);
+      set_string_intervals (string, NULL);
     }
   return string;
 }
@@ -2139,19 +2139,15 @@ ARRAY is a vector, string, char-table, or bool-vector.  */)
   register ptrdiff_t size, idx;
 
   if (VECTORP (array))
-    {
-      register Lisp_Object *p = XVECTOR (array)->contents;
-      size = ASIZE (array);
-      for (idx = 0; idx < size; idx++)
-        p[idx] = item;
-    }
+    for (idx = 0, size = ASIZE (array); idx < size; idx++)
+      ASET (array, idx, item);
   else if (CHAR_TABLE_P (array))
     {
       int i;
 
       for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++)
-        char_table_set_contents (array, i, item);
-      CSET (XCHAR_TABLE (array), defalt, item);
+        set_char_table_contents (array, i, item);
+      set_char_table_defalt (array, item);
     }
   else if (STRINGP (array))
     {
@@ -3663,7 +3659,7 @@ make_hash_table (Lisp_Object test, Lisp_Object size, Lisp_Object rehash_size,
 
   /* Set up the free list.  */
   for (i = 0; i < sz - 1; ++i)
-    set_hash_next (h, i, make_number (i + 1));
+    set_hash_next_slot (h, i, make_number (i + 1));
   h->next_free = make_number (0);
 
   XSET_HASH_TABLE (table, h);
@@ -3760,17 +3756,17 @@ maybe_resize_hash_table (struct Lisp_Hash_Table *h)
         }
 #endif
 
-      h->key_and_value = larger_vector (h->key_and_value,
-                                        2 * (new_size - old_size), -1);
-      h->next = larger_vector (h->next, new_size - old_size, -1);
-      h->hash = larger_vector (h->hash, new_size - old_size, -1);
-      h->index = Fmake_vector (make_number (index_size), Qnil);
+      set_hash_key_and_value (h, larger_vector (h->key_and_value,
+                                                2 * (new_size - old_size), -1));
+      set_hash_next (h, larger_vector (h->next, new_size - old_size, -1));
+      set_hash_hash (h, larger_vector (h->hash, new_size - old_size, -1));
+      set_hash_index (h, Fmake_vector (make_number (index_size), Qnil));
 
       /* Update the free list.  Do it so that new entries are added at
          the end of the free list.  This makes some operations like
          maphash faster.  */
       for (i = old_size; i < new_size - 1; ++i)
-        set_hash_next (h, i, make_number (i + 1));
+        set_hash_next_slot (h, i, make_number (i + 1));
 
       if (!NILP (h->next_free))
         {
@@ -3781,7 +3777,7 @@ maybe_resize_hash_table (struct Lisp_Hash_Table *h)
                  !NILP (next))
             last = next;
 
-          set_hash_next (h, XFASTINT (last), make_number (old_size));
+          set_hash_next_slot (h, XFASTINT (last), make_number (old_size));
         }
       else
         XSETFASTINT (h->next_free, old_size);
@@ -3792,8 +3788,8 @@ maybe_resize_hash_table (struct Lisp_Hash_Table *h)
           {
             EMACS_UINT hash_code = XUINT (HASH_HASH (h, i));
             ptrdiff_t start_of_bucket = hash_code % ASIZE (h->index);
-            set_hash_next (h, i, HASH_INDEX (h, start_of_bucket));
-            set_hash_index (h, start_of_bucket, make_number (i));
+            set_hash_next_slot (h, i, HASH_INDEX (h, start_of_bucket));
+            set_hash_index_slot (h, start_of_bucket, make_number (i));
           }
     }
 }
@@ -3852,16 +3848,16 @@ hash_put (struct Lisp_Hash_Table *h, Lisp_Object key, Lisp_Object value,
   /* Store key/value in the key_and_value vector.  */
   i = XFASTINT (h->next_free);
   h->next_free = HASH_NEXT (h, i);
-  set_hash_key (h, i, key);
-  set_hash_value (h, i, value);
+  set_hash_key_slot (h, i, key);
+  set_hash_value_slot (h, i, value);
 
   /* Remember its hash code.  */
-  set_hash_hash (h, i, make_number (hash));
+  set_hash_hash_slot (h, i, make_number (hash));
 
   /* Add new entry to its collision chain.  */
   start_of_bucket = hash % ASIZE (h->index);
-  set_hash_next (h, i, HASH_INDEX (h, start_of_bucket));
-  set_hash_index (h, start_of_bucket, make_number (i));
+  set_hash_next_slot (h, i, HASH_INDEX (h, start_of_bucket));
+  set_hash_index_slot (h, start_of_bucket, make_number (i));
   return i;
 }
 
@@ -3892,16 +3888,16 @@ hash_remove_from_table (struct Lisp_Hash_Table *h, Lisp_Object key)
         {
           /* Take entry out of collision chain.  */
           if (NILP (prev))
-            set_hash_index (h, start_of_bucket, HASH_NEXT (h, i));
+            set_hash_index_slot (h, start_of_bucket, HASH_NEXT (h, i));
           else
-            set_hash_next (h, XFASTINT (prev), HASH_NEXT (h, i));
+            set_hash_next_slot (h, XFASTINT (prev), HASH_NEXT (h, i));
 
           /* Clear slots in key_and_value and add the slots to
              the free list.  */
-          set_hash_key (h, i, Qnil);
-          set_hash_value (h, i, Qnil);
-          set_hash_hash (h, i, Qnil);
-          set_hash_next (h, i, h->next_free);
+          set_hash_key_slot (h, i, Qnil);
+          set_hash_value_slot (h, i, Qnil);
+          set_hash_hash_slot (h, i, Qnil);
+          set_hash_next_slot (h, i, h->next_free);
           h->next_free = make_number (i);
           h->count--;
           eassert (h->count >= 0);
@@ -3927,10 +3923,10 @@ hash_clear (struct Lisp_Hash_Table *h)
 
       for (i = 0; i < size; ++i)
         {
-          set_hash_next (h, i, i < size - 1 ? make_number (i + 1) : Qnil);
-          set_hash_key (h, i, Qnil);
-          set_hash_value (h, i, Qnil);
-          set_hash_hash (h, i, Qnil);
+          set_hash_next_slot (h, i, i < size - 1 ? make_number (i + 1) : Qnil);
+          set_hash_key_slot (h, i, Qnil);
+          set_hash_value_slot (h, i, Qnil);
+          set_hash_hash_slot (h, i, Qnil);
         }
 
       for (i = 0; i < ASIZE (h->index); ++i)
@@ -3971,8 +3967,8 @@ sweep_weak_table (struct Lisp_Hash_Table *h, int remove_entries_p)
       for (idx = HASH_INDEX (h, bucket); !NILP (idx); idx = next)
         {
           ptrdiff_t i = XFASTINT (idx);
-          int key_known_to_survive_p = survives_gc_p (HASH_KEY (h, i));
-          int value_known_to_survive_p = survives_gc_p (HASH_VALUE (h, i));
+          bool key_known_to_survive_p = survives_gc_p (HASH_KEY (h, i));
+          bool value_known_to_survive_p = survives_gc_p (HASH_VALUE (h, i));
           int remove_p;
 
           if (EQ (h->weak, Qkey))
@@ -3994,18 +3990,18 @@ sweep_weak_table (struct Lisp_Hash_Table *h, int remove_entries_p)
                 {
                   /* Take out of collision chain.  */
                   if (NILP (prev))
-                    set_hash_index (h, bucket, next);
+                    set_hash_index_slot (h, bucket, next);
                   else
-                    set_hash_next (h, XFASTINT (prev), next);
+                    set_hash_next_slot (h, XFASTINT (prev), next);
 
                   /* Add to free list.  */
-                  set_hash_next (h, i, h->next_free);
+                  set_hash_next_slot (h, i, h->next_free);
                   h->next_free = idx;
 
                   /* Clear key, value, and hash.  */
-                  set_hash_key (h, i, Qnil);
-                  set_hash_value (h, i, Qnil);
-                  set_hash_hash (h, i, Qnil);
+                  set_hash_key_slot (h, i, Qnil);
+                  set_hash_value_slot (h, i, Qnil);
+                  set_hash_hash_slot (h, i, Qnil);
 
                   h->count--;
                 }
@@ -4512,7 +4508,7 @@ VALUE.  In any case, return VALUE.  */)
 
   i = hash_lookup (h, key, &hash);
   if (i >= 0)
-    set_hash_value (h, i, value);
+    set_hash_value_slot (h, i, value);
   else
     hash_put (h, key, value, hash);
 
diff --git a/src/fontset.c b/src/fontset.c
index 82d668a3871..01e38fe45e5 100644
--- a/src/fontset.c
+++ b/src/fontset.c
@@ -185,8 +185,7 @@ void (*check_window_system_func) (void);
 
 
 /* Prototype declarations for static functions.  */
-static Lisp_Object fontset_add (Lisp_Object, Lisp_Object, Lisp_Object,
-                                Lisp_Object);
+static void fontset_add (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object);
 static Lisp_Object fontset_find_font (Lisp_Object, int, struct face *,
                                       int, int);
 static void reorder_font_vector (Lisp_Object, struct font *);
@@ -213,27 +212,71 @@ fontset_id_valid_p (int id)
 /* Return the fontset with ID.  No check of ID's validness.  */
 #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id)
 
-/* Macros to access special values of FONTSET.  */
-#define FONTSET_ID(fontset)             XCHAR_TABLE (fontset)->extras[0]
+/* Access special values of FONTSET.  */
 
-/* Macros to access special values of (base) FONTSET.  */
-#define FONTSET_NAME(fontset)           XCHAR_TABLE (fontset)->extras[1]
-#define FONTSET_ASCII(fontset)          XCHAR_TABLE (fontset)->extras[4]
-/* #define FONTSET_SPEC(fontset)        XCHAR_TABLE (fontset)->extras[5] */
+#define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0]
+static void
+set_fontset_id (Lisp_Object fontset, Lisp_Object id)
+{
+  set_char_table_extras (fontset, 0, id);
+}
+
+/* Access special values of (base) FONTSET.  */
+
+#define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1]
+static void
+set_fontset_name (Lisp_Object fontset, Lisp_Object name)
+{
+  set_char_table_extras (fontset, 1, name);
+}
+
+#define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->extras[4]
+static void
+set_fontset_ascii (Lisp_Object fontset, Lisp_Object ascii)
+{
+  set_char_table_extras (fontset, 4, ascii);
+}
+
+/* Access special values of (realized) FONTSET.  */
+
+#define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->extras[2]
+static void
+set_fontset_base (Lisp_Object fontset, Lisp_Object base)
+{
+  set_char_table_extras (fontset, 2, base);
+}
+
+#define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[3]
+static void
+set_fontset_frame (Lisp_Object fontset, Lisp_Object frame)
+{
+  set_char_table_extras (fontset, 3, frame);
+}
 
-/* Macros to access special values of (realized) FONTSET.  */
-#define FONTSET_BASE(fontset)           XCHAR_TABLE (fontset)->extras[2]
-#define FONTSET_FRAME(fontset)          XCHAR_TABLE (fontset)->extras[3]
-/* #define FONTSET_OBJLIST(fontset)     XCHAR_TABLE (fontset)->extras[4] */
-#define FONTSET_NOFONT_FACE(fontset)    XCHAR_TABLE (fontset)->extras[5]
-/* #define FONTSET_REPERTORY(fontset)   XCHAR_TABLE (fontset)->extras[6] */
-#define FONTSET_DEFAULT(fontset)        XCHAR_TABLE (fontset)->extras[7]
+#define FONTSET_NOFONT_FACE(fontset) XCHAR_TABLE (fontset)->extras[5]
+static void
+set_fontset_nofont_face (Lisp_Object fontset, Lisp_Object face)
+{
+  set_char_table_extras (fontset, 5, face);
+}
+
+#define FONTSET_DEFAULT(fontset) XCHAR_TABLE (fontset)->extras[7]
+static void
+set_fontset_default (Lisp_Object fontset, Lisp_Object def)
+{
+  set_char_table_extras (fontset, 7, def);
+}
 
 /* For both base and realized fontset.  */
-#define FONTSET_FALLBACK(fontset)       XCHAR_TABLE (fontset)->extras[8]
 
-#define BASE_FONTSET_P(fontset)         (NILP (FONTSET_BASE (fontset)))
+#define FONTSET_FALLBACK(fontset) XCHAR_TABLE (fontset)->extras[8]
+static void
+set_fontset_fallback (Lisp_Object fontset, Lisp_Object fallback)
+{
+  set_char_table_extras (fontset, 8, fallback);
+}
 
+#define BASE_FONTSET_P(fontset) (NILP (FONTSET_BASE (fontset)))
 
 /* Macros for FONT-DEF and RFONT-DEF of fontset.  */
 #define FONT_DEF_NEW(font_def, font_spec, encoding, repertory)  \
@@ -265,7 +308,7 @@ fontset_id_valid_p (int id)
 #define RFONT_DEF_NEW(rfont_def, font_def)              \
   do {                                                  \
     (rfont_def) = Fmake_vector (make_number (4), Qnil); \
-    ASET ((rfont_def), 1, (font_def));          \
+    ASET ((rfont_def), 1, (font_def));                  \
     RFONT_DEF_SET_SCORE ((rfont_def), 0);               \
   } while (0)
 
@@ -307,15 +350,17 @@ fontset_ref (Lisp_Object fontset, int c)
    replace with ELT, if ADD is `prepend', prepend ELT, otherwise,
    append ELT.  */
 
-#define FONTSET_ADD(fontset, range, elt, add)                                \
-  (NILP (add)                                                                \
-   ? (NILP (range)                                                           \
-      ? (FONTSET_FALLBACK (fontset) = Fmake_vector (make_number (1), (elt))) \
-      : Fset_char_table_range ((fontset), (range),                           \
-                               Fmake_vector (make_number (1), (elt))))       \
+#define FONTSET_ADD(fontset, range, elt, add)                           \
+  (NILP (add)                                                           \
+   ? (NILP (range)                                                      \
+      ? (set_fontset_fallback                                           \
+         (fontset, Fmake_vector (make_number (1), (elt))))              \
+      : ((void)                                                         \
+         Fset_char_table_range (fontset, range,                         \
+                                Fmake_vector (make_number (1), elt))))  \
    : fontset_add ((fontset), (range), (elt), (add)))
 
-static Lisp_Object
+static void
 fontset_add (Lisp_Object fontset, Lisp_Object range, Lisp_Object elt, Lisp_Object add)
 {
   Lisp_Object args[2];
@@ -341,10 +386,9 @@ fontset_add (Lisp_Object fontset, Lisp_Object range, Lisp_Object elt, Lisp_Objec
   else
     {
       args[idx] = FONTSET_FALLBACK (fontset);
-      FONTSET_FALLBACK (fontset)
-        = NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args);
+      set_fontset_fallback
+        (fontset, NILP (args[idx]) ? args[1 - idx] : Fvconcat (2, args));
     }
-  return Qnil;
 }
 
 static int
@@ -485,7 +529,7 @@ fontset_get_font_group (Lisp_Object fontset, int c)
   if (c >= 0)
     char_table_set_range (fontset, from, to, font_group);
   else
-    FONTSET_FALLBACK (fontset) = font_group;
+    set_fontset_fallback (fontset, font_group);
   return font_group;
 }
 
@@ -720,8 +764,9 @@ fontset_font (Lisp_Object fontset, int c, struct face *face, int id)
   if (! EQ (base_fontset, Vdefault_fontset))
     {
       if (NILP (FONTSET_DEFAULT (fontset)))
-        FONTSET_DEFAULT (fontset)
-          = make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset);
+        set_fontset_default
+          (fontset,
+           make_fontset (FONTSET_FRAME (fontset), Qnil, Vdefault_fontset));
       FONT_DEFERRED_LOG ("default fontset: font for", make_number (c), Qnil);
       default_rfont_def
         = fontset_find_font (FONTSET_DEFAULT (fontset), c, face, id, 0);
@@ -781,16 +826,14 @@ make_fontset (Lisp_Object frame, Lisp_Object name, Lisp_Object base)
 
   fontset = Fmake_char_table (Qfontset, Qnil);
 
-  FONTSET_ID (fontset) = make_number (id);
+  set_fontset_id (fontset, make_number (id));
   if (NILP (base))
-    {
-      FONTSET_NAME (fontset) = name;
-    }
+    set_fontset_name (fontset, name);
   else
     {
-      FONTSET_NAME (fontset) = Qnil;
-      FONTSET_FRAME (fontset) = frame;
-      FONTSET_BASE (fontset) = base;
+      set_fontset_name (fontset, Qnil);
+      set_fontset_frame (fontset, frame);
+      set_fontset_base (fontset, base);
     }
 
   ASET (Vfontset_table, id, fontset);
@@ -958,7 +1001,7 @@ face_for_char (FRAME_PTR f, struct face *face, int c, int pos, Lisp_Object objec
       else
         {
           face_id = face_for_font (f, Qnil, face);
-          FONTSET_NOFONT_FACE (fontset) = make_number (face_id);
+          set_fontset_nofont_face (fontset, make_number (face_id));
         }
     }
   eassert (face_id >= 0);
@@ -1580,7 +1623,7 @@ appended.  By default, FONT-SPEC overrides the previous settings.  */)
       Lisp_Object tail, fr, alist;
       int fontset_id = XINT (FONTSET_ID (fontset));
 
-      FONTSET_ASCII (fontset) = fontname;
+      set_fontset_ascii (fontset, fontname);
       name = FONTSET_NAME (fontset);
       FOR_EACH_FRAME (tail, fr)
         {
@@ -1658,7 +1701,7 @@ FONT-SPEC is a vector, a cons, or a string.  See the documentation of
       len = font_unparse_xlfd (font_spec, 0, xlfd, 256);
       if (len < 0)
         error ("Invalid fontset name (perhaps too long): %s", SDATA (name));
-      FONTSET_ASCII (fontset) = make_unibyte_string (xlfd, len);
+      set_fontset_ascii (fontset, make_unibyte_string (xlfd, len));
     }
   else
     {
@@ -1744,7 +1787,7 @@ fontset_from_font (Lisp_Object font_object)
     Fset_fontset_font (name, Qnil, font_spec, Qnil, Qnil);
   }
 
-  FONTSET_ASCII (fontset) = font_name;
+  set_fontset_ascii (fontset, font_name);
 
   return XINT (FONTSET_ID (fontset));
 }
@@ -1916,7 +1959,7 @@ format is the same as above.  */)
   if (!EQ (fontset, Vdefault_fontset))
     {
       tables[1] = Fmake_char_table (Qnil, Qnil);
-      char_table_set_extras (tables[0], 0, tables[1]);
+      set_char_table_extras (tables[0], 0, tables[1]);
       fontsets[1] = Vdefault_fontset;
     }
 
@@ -1979,7 +2022,7 @@ format is the same as above.  */)
               if (c <= MAX_5_BYTE_CHAR)
                 char_table_set_range (tables[k], c, to, alist);
               else
-                CSET (XCHAR_TABLE (tables[k]), defalt, alist);
+                set_char_table_defalt (tables[k], alist);
 
               /* At last, change each elements to font names.  */
               for (; CONSP (alist); alist = XCDR (alist))
@@ -2161,9 +2204,10 @@ syms_of_fontset (void)
 
   Vdefault_fontset = Fmake_char_table (Qfontset, Qnil);
   staticpro (&Vdefault_fontset);
-  FONTSET_ID (Vdefault_fontset) = make_number (0);
-  FONTSET_NAME (Vdefault_fontset)
-    = build_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default");
+  set_fontset_id (Vdefault_fontset, make_number (0));
+  set_fontset_name
+    (Vdefault_fontset,
+     build_pure_c_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"));
   ASET (Vfontset_table, 0, Vdefault_fontset);
   next_fontset_id = 1;
 
diff --git a/src/frame.c b/src/frame.c
index 9dabae55abc..a00f44a1e5a 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -19,6 +19,8 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
+#define FRAME_INLINE EXTERN_INLINE
+
 #include <stdio.h>
 #include <errno.h>
 #include <limits.h>
@@ -127,6 +129,18 @@ static Lisp_Object Qdelete_frame_functions;
 static void x_report_frame_params (struct frame *, Lisp_Object *);
 #endif
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+fset_buffer_predicate (struct frame *f, Lisp_Object val)
+{
+  f->buffer_predicate = val;
+}
+static inline void
+fset_minibuffer_window (struct frame *f, Lisp_Object val)
+{
+  f->minibuffer_window = val;
+}
+
 
 static void
 set_menu_bar_lines_1 (Lisp_Object window, int n)
@@ -134,8 +148,8 @@ set_menu_bar_lines_1 (Lisp_Object window, int n)
   struct window *w = XWINDOW (window);
 
   w->last_modified = 0;
-  WSET (w, top_line, make_number (XFASTINT (w->top_line) + n));
-  WSET (w, total_lines, make_number (XFASTINT (w->total_lines) - n));
+  wset_top_line (w, make_number (XFASTINT (w->top_line) + n));
+  wset_total_lines (w, make_number (XFASTINT (w->total_lines) - n));
 
   /* Handle just the top child in a vertical split.  */
   if (!NILP (w->vchild))
@@ -271,7 +285,7 @@ make_frame (int mini_p)
 
   /* Initialize Lisp data.  Note that allocate_frame initializes all
      Lisp data to nil, so do it only for slots which should not be nil.  */
-  FSET (f, tool_bar_position, Qtop);
+  fset_tool_bar_position (f, Qtop);
 
   /* Initialize non-Lisp data.  Note that allocate_frame zeroes out all
      non-Lisp data, so do it only for slots which should not be zero.
@@ -291,20 +305,20 @@ make_frame (int mini_p)
   if (mini_p)
     {
       mini_window = make_window ();
-      WSET (XWINDOW (root_window), next, mini_window);
-      WSET (XWINDOW (mini_window), prev, root_window);
+      wset_next (XWINDOW (root_window), mini_window);
+      wset_prev (XWINDOW (mini_window), root_window);
       XWINDOW (mini_window)->mini = 1;
-      WSET (XWINDOW (mini_window), frame, frame);
-      FSET (f, minibuffer_window, mini_window);
+      wset_frame (XWINDOW (mini_window), frame);
+      fset_minibuffer_window (f, mini_window);
     }
   else
     {
       mini_window = Qnil;
-      WSET (XWINDOW (root_window), next, Qnil);
-      FSET (f, minibuffer_window, Qnil);
+      wset_next (XWINDOW (root_window), Qnil);
+      fset_minibuffer_window (f, Qnil);
     }
 
-  WSET (XWINDOW (root_window), frame, frame);
+  wset_frame (XWINDOW (root_window), frame);
 
   /* 10 is arbitrary,
      just so that there is "something there."
@@ -313,21 +327,21 @@ make_frame (int mini_p)
   SET_FRAME_COLS (f, 10);
   FRAME_LINES (f) = 10;
 
-  WSET (XWINDOW (root_window), total_cols, make_number (10));
-  WSET (XWINDOW (root_window), total_lines, make_number (mini_p ? 9 : 10));
+  wset_total_cols (XWINDOW (root_window), make_number (10));
+  wset_total_lines (XWINDOW (root_window), make_number (mini_p ? 9 : 10));
 
   if (mini_p)
     {
-      WSET (XWINDOW (mini_window), total_cols, make_number (10));
-      WSET (XWINDOW (mini_window), top_line, make_number (9));
-      WSET (XWINDOW (mini_window), total_lines, make_number (1));
+      wset_total_cols (XWINDOW (mini_window), make_number (10));
+      wset_top_line (XWINDOW (mini_window), make_number (9));
+      wset_total_lines (XWINDOW (mini_window), make_number (1));
     }
 
   /* Choose a buffer for the frame's root window.  */
   {
     Lisp_Object buf;
 
-    WSET (XWINDOW (root_window), buffer, Qt);
+    wset_buffer (XWINDOW (root_window), Qt);
     buf = Fcurrent_buffer ();
     /* If buf is a 'hidden' buffer (i.e. one whose name starts with
        a space), try to find another one.  */
@@ -341,12 +355,12 @@ make_frame (int mini_p)
        etc.  Running Lisp functions at this point surely ends in a
        SEGV.  */
     set_window_buffer (root_window, buf, 0, 0);
-    FSET (f, buffer_list, Fcons (buf, Qnil));
+    fset_buffer_list (f, Fcons (buf, Qnil));
   }
 
   if (mini_p)
     {
-      WSET (XWINDOW (mini_window), buffer, Qt);
+      wset_buffer (XWINDOW (mini_window), Qt);
       set_window_buffer (mini_window,
                          (NILP (Vminibuffer_list)
                           ? get_minibuffer (0)
@@ -354,8 +368,8 @@ make_frame (int mini_p)
                          0, 0);
     }
 
-  FSET (f, root_window, root_window);
-  FSET (f, selected_window, root_window);
+  fset_root_window (f, root_window);
+  fset_selected_window (f, root_window);
   /* Make sure this window seems more recently used than
      a newly-created, never-selected window.  */
   XWINDOW (f->selected_window)->use_time = ++window_select_count;
@@ -395,8 +409,8 @@ make_frame_without_minibuffer (register Lisp_Object mini_window, KBOARD *kb, Lis
           XSETFRAME (frame_dummy, f);
           GCPRO1 (frame_dummy);
           /* If there's no minibuffer frame to use, create one.  */
-          KSET (kb, Vdefault_minibuffer_frame,
-                call1 (intern ("make-initial-minibuffer-frame"), display));
+          kset_default_minibuffer_frame
+            (kb, call1 (intern ("make-initial-minibuffer-frame"), display));
           UNGCPRO;
         }
 
@@ -404,7 +418,7 @@ make_frame_without_minibuffer (register Lisp_Object mini_window, KBOARD *kb, Lis
         = XFRAME (KVAR (kb, Vdefault_minibuffer_frame))->minibuffer_window;
     }
 
-  FSET (f, minibuffer_window, mini_window);
+  fset_minibuffer_window (f, mini_window);
 
   /* Make the chosen minibuffer window display the proper minibuffer,
      unless it is already showing a minibuffer.  */
@@ -441,11 +455,12 @@ make_minibuffer_frame (void)
      Avoid infinite looping on the window chain by marking next pointer
      as nil. */
 
-  mini_window = FSET (f, minibuffer_window, f->root_window);
+  mini_window = f->root_window;
+  fset_minibuffer_window (f, mini_window);
   XWINDOW (mini_window)->mini = 1;
-  WSET (XWINDOW (mini_window), next, Qnil);
-  WSET (XWINDOW (mini_window), prev, Qnil);
-  WSET (XWINDOW (mini_window), frame, frame);
+  wset_next (XWINDOW (mini_window), Qnil);
+  wset_prev (XWINDOW (mini_window), Qnil);
+  wset_frame (XWINDOW (mini_window), frame);
 
   /* Put the proper buffer in that window.  */
 
@@ -484,7 +499,7 @@ make_initial_frame (void)
   Vframe_list = Fcons (frame, Vframe_list);
 
   tty_frame_count = 1;
-  FSET (f, name, build_pure_c_string ("F1"));
+  fset_name (f, build_pure_c_string ("F1"));
 
   f->visible = 1;
   f->async_visible = 1;
@@ -525,7 +540,7 @@ make_terminal_frame (struct terminal *terminal)
   XSETFRAME (frame, f);
   Vframe_list = Fcons (frame, Vframe_list);
 
-  FSET (f, name, make_formatted_string (name, "F%"pMd, ++tty_frame_count));
+  fset_name (f, make_formatted_string (name, "F%"pMd, ++tty_frame_count));
 
   f->visible = 1;               /* FRAME_SET_VISIBLE wd set frame_garbaged. */
   f->async_visible = 1;         /* Don't let visible be cleared later. */
@@ -695,7 +710,7 @@ affects all frames on the same terminal device.  */)
 
   /* Make the frame face alist be frame-specific, so that each
      frame could change its face definitions independently.  */
-  FSET (f, face_alist, Fcopy_alist (sf->face_alist));
+  fset_face_alist (f, Fcopy_alist (sf->face_alist));
   /* Simple Fcopy_alist isn't enough, because we need the contents of
      the vectors which are the CDRs of associations in face_alist to
      be copied as well.  */
@@ -849,7 +864,7 @@ to that frame.  */)
   (Lisp_Object event)
 {
   /* Preserve prefix arg that the command loop just cleared.  */
-  KSET (current_kboard, Vprefix_arg, Vcurrent_prefix_arg);
+  kset_prefix_arg (current_kboard, Vcurrent_prefix_arg);
   Frun_hooks (1, &Qmouse_leave_buffer_hook);
   return do_switch_frame (event, 0, 0, Qnil);
 }
@@ -1282,7 +1297,7 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
   /* Mark all the windows that used to be on FRAME as deleted, and then
      remove the reference to them.  */
   delete_all_child_windows (f->root_window);
-  FSET (f, root_window, Qnil);
+  fset_root_window (f, Qnil);
 
   Vframe_list = Fdelq (frame, Vframe_list);
   FRAME_SET_VISIBLE (f, 0);
@@ -1291,7 +1306,7 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
      garbage collection.  The frame object itself may not be garbage
      collected until much later, because recent_keys and other data
      structures can still refer to it.  */
-  FSET (f, menu_bar_vector, Qnil);
+  fset_menu_bar_vector (f, Qnil);
 
   free_font_driver_list (f);
   xfree (f->namebuf);
@@ -1443,11 +1458,11 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
           if (NILP (frame_with_minibuf))
             abort ();
 
-          KSET (kb, Vdefault_minibuffer_frame, frame_with_minibuf);
+          kset_default_minibuffer_frame (kb, frame_with_minibuf);
         }
       else
         /* No frames left on this kboard--say no minibuffer either.  */
-        KSET (kb, Vdefault_minibuffer_frame, Qnil);
+        kset_default_minibuffer_frame (kb, Qnil);
     }
 
   /* Cause frame titles to update--necessary if we now have just one frame.  */
@@ -1685,7 +1700,7 @@ make_frame_visible_1 (Lisp_Object window)
       w = XWINDOW (window);
 
       if (!NILP (w->buffer))
-        BSET (XBUFFER (w->buffer), display_time, Fcurrent_time ());
+        bset_display_time (XBUFFER (w->buffer), Fcurrent_time ());
 
       if (!NILP (w->vchild))
         make_frame_visible_1 (w->vchild);
@@ -1919,7 +1934,7 @@ The redirection lasts until `redirect-frame-focus' is called to change it.  */)
 
   f = XFRAME (frame);
 
-  FSET (f, focus_frame, focus_frame);
+  fset_focus_frame (f, focus_frame);
 
   if (FRAME_TERMINAL (f)->frame_rehighlight_hook)
     (*FRAME_TERMINAL (f)->frame_rehighlight_hook) (f);
@@ -1984,10 +1999,10 @@ frames_discard_buffer (Lisp_Object buffer)
 
   FOR_EACH_FRAME (tail, frame)
     {
-      FSET (XFRAME (frame), buffer_list,
-            Fdelq (buffer, XFRAME (frame)->buffer_list));
-      FSET (XFRAME (frame), buried_buffer_list,
-            Fdelq (buffer, XFRAME (frame)->buried_buffer_list));
+      fset_buffer_list
+        (XFRAME (frame), Fdelq (buffer, XFRAME (frame)->buffer_list));
+      fset_buried_buffer_list
+        (XFRAME (frame), Fdelq (buffer, XFRAME (frame)->buried_buffer_list));
     }
 }
 
@@ -2054,7 +2069,7 @@ set_term_frame_name (struct frame *f, Lisp_Object name)
         error ("Frame names of the form F<num> are usurped by Emacs");
     }
 
-  FSET (f, name, name);
+  fset_name (f, name);
   update_mode_lines = 1;
 }
 
@@ -2071,7 +2086,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
       for (; CONSP (val); val = XCDR (val))
         if (!NILP (Fbuffer_live_p (XCAR (val))))
           list = Fcons (XCAR (val), list);
-      FSET (f, buffer_list, Fnreverse (list));
+      fset_buffer_list (f, Fnreverse (list));
       return;
     }
   if (EQ (prop, Qburied_buffer_list))
@@ -2080,7 +2095,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
       for (; CONSP (val); val = XCDR (val))
         if (!NILP (Fbuffer_live_p (XCAR (val))))
           list = Fcons (XCAR (val), list);
-      FSET (f, buried_buffer_list, Fnreverse (list));
+      fset_buried_buffer_list (f, Fnreverse (list));
       return;
     }
 
@@ -2098,7 +2113,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
         case SYMBOL_PLAINVAL: case SYMBOL_FORWARDED: break;
         case SYMBOL_LOCALIZED:
           { struct Lisp_Buffer_Local_Value *blv = sym->val.blv;
-            if (blv->frame_local && BLV_FOUND (blv) && XFRAME (blv->where) == f)
+            if (blv->frame_local && blv_found (blv) && XFRAME (blv->where) == f)
               swap_in_global_binding (sym);
             break;
           }
@@ -2117,7 +2132,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
   /* Update the frame parameter alist.  */
   old_alist_elt = Fassq (prop, f->param_alist);
   if (EQ (old_alist_elt, Qnil))
-    FSET (f, param_alist, Fcons (Fcons (prop, val), f->param_alist));
+    fset_param_alist (f, Fcons (Fcons (prop, val), f->param_alist));
   else
     Fsetcdr (old_alist_elt, val);
 
@@ -2125,7 +2140,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
      in addition to the alist.  */
 
   if (EQ (prop, Qbuffer_predicate))
-    FSET (f, buffer_predicate, val);
+    fset_buffer_predicate (f, val);
 
   if (! FRAME_WINDOW_P (f))
     {
@@ -2145,7 +2160,7 @@ store_frame_param (struct frame *f, Lisp_Object prop, Lisp_Object val)
         error ("Can't change the surrogate minibuffer of a frame with its own minibuffer");
 
       /* Install the chosen minibuffer window, with proper buffer.  */
-      FSET (f, minibuffer_window, val);
+      fset_minibuffer_window (f, val);
     }
 }
 
diff --git a/src/frame.h b/src/frame.h
index e07974fb4d2..92fbda42c70 100644
--- a/src/frame.h
+++ b/src/frame.h
@@ -25,6 +25,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "dispextern.h"
 
+INLINE_HEADER_BEGIN
+#ifndef FRAME_INLINE
+# define FRAME_INLINE INLINE
+#endif
+
 
 /* Miscellanea.  */
 
@@ -80,10 +85,6 @@ struct terminal;
 
 struct font_driver_list;
 
-/* Most code should use this macro to set Lisp field in struct frame.  */
-
-#define FSET(f, field, value) ((f)->field = (value))
-
 struct frame
 {
   struct vectorlike_header header;
@@ -499,6 +500,109 @@ struct frame
   unsigned long foreground_pixel;
 };
 
+/* Most code should use these functions to set Lisp fields in struct frame.  */
+
+FRAME_INLINE void
+fset_buffer_list (struct frame *f, Lisp_Object val)
+{
+  f->buffer_list = val;
+}
+FRAME_INLINE void
+fset_buried_buffer_list (struct frame *f, Lisp_Object val)
+{
+  f->buried_buffer_list = val;
+}
+FRAME_INLINE void
+fset_condemned_scroll_bars (struct frame *f, Lisp_Object val)
+{
+  f->condemned_scroll_bars = val;
+}
+FRAME_INLINE void
+fset_current_tool_bar_string (struct frame *f, Lisp_Object val)
+{
+  f->current_tool_bar_string = val;
+}
+FRAME_INLINE void
+fset_desired_tool_bar_string (struct frame *f, Lisp_Object val)
+{
+  f->desired_tool_bar_string = val;
+}
+FRAME_INLINE void
+fset_face_alist (struct frame *f, Lisp_Object val)
+{
+  f->face_alist = val;
+}
+FRAME_INLINE void
+fset_focus_frame (struct frame *f, Lisp_Object val)
+{
+  f->focus_frame = val;
+}
+FRAME_INLINE void
+fset_icon_name (struct frame *f, Lisp_Object val)
+{
+  f->icon_name = val;
+}
+FRAME_INLINE void
+fset_menu_bar_items (struct frame *f, Lisp_Object val)
+{
+  f->menu_bar_items = val;
+}
+FRAME_INLINE void
+fset_menu_bar_vector (struct frame *f, Lisp_Object val)
+{
+  f->menu_bar_vector = val;
+}
+FRAME_INLINE void
+fset_menu_bar_window (struct frame *f, Lisp_Object val)
+{
+  f->menu_bar_window = val;
+}
+FRAME_INLINE void
+fset_name (struct frame *f, Lisp_Object val)
+{
+  f->name = val;
+}
+FRAME_INLINE void
+fset_param_alist (struct frame *f, Lisp_Object val)
+{
+  f->param_alist = val;
+}
+FRAME_INLINE void
+fset_root_window (struct frame *f, Lisp_Object val)
+{
+  f->root_window = val;
+}
+FRAME_INLINE void
+fset_scroll_bars (struct frame *f, Lisp_Object val)
+{
+  f->scroll_bars = val;
+}
+FRAME_INLINE void
+fset_selected_window (struct frame *f, Lisp_Object val)
+{
+  f->selected_window = val;
+}
+FRAME_INLINE void
+fset_title (struct frame *f, Lisp_Object val)
+{
+  f->title = val;
+}
+FRAME_INLINE void
+fset_tool_bar_items (struct frame *f, Lisp_Object val)
+{
+  f->tool_bar_items = val;
+}
+FRAME_INLINE void
+fset_tool_bar_position (struct frame *f, Lisp_Object val)
+{
+  f->tool_bar_position = val;
+}
+FRAME_INLINE void
+fset_tool_bar_window (struct frame *f, Lisp_Object val)
+{
+  f->tool_bar_window = val;
+}
+
 #define FRAME_KBOARD(f) ((f)->terminal->kboard)
 
 /* Return a pointer to the image cache of frame F.  */
@@ -1146,4 +1250,6 @@ extern void set_frame_menubar (FRAME_PTR, int, int);
 
 #endif /* HAVE_WINDOW_SYSTEM */
 
+INLINE_HEADER_END
+
 #endif /* not EMACS_FRAME_H */
diff --git a/src/gnutls.c b/src/gnutls.c
index 5189f2098cf..a2573f6bd99 100644
--- a/src/gnutls.c
+++ b/src/gnutls.c
@@ -830,7 +830,7 @@ one trustfile (usually a CA bundle).  */)
   XPROCESS (proc)->gnutls_state = NULL;
   XPROCESS (proc)->gnutls_x509_cred = NULL;
   XPROCESS (proc)->gnutls_anon_cred = NULL;
-  PSET (XPROCESS (proc), gnutls_cred_type, type);
+  pset_gnutls_cred_type (XPROCESS (proc), type);
   GNUTLS_INITSTAGE (proc) = GNUTLS_STAGE_EMPTY;
 
   GNUTLS_LOG (1, max_log_level, "allocating credentials");
diff --git a/src/indent.c b/src/indent.c
index 881e5d7ddaf..160b8c7479e 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -141,7 +141,7 @@ recompute_width_table (struct buffer *buf, struct Lisp_Char_Table *disptab)
   struct Lisp_Vector *widthtab;
 
   if (!VECTORP (BVAR (buf, width_table)))
-    BSET (buf, width_table, Fmake_vector (make_number (256), make_number (0)));
+    bset_width_table (buf, Fmake_vector (make_number (256), make_number (0)));
   widthtab = XVECTOR (BVAR (buf, width_table));
   if (widthtab->header.size != 256)
     abort ();
@@ -166,7 +166,7 @@ width_run_cache_on_off (void)
         {
           free_region_cache (current_buffer->width_run_cache);
           current_buffer->width_run_cache = 0;
-          BSET (current_buffer, width_table, Qnil);
+          bset_width_table (current_buffer, Qnil);
         }
     }
   else
@@ -336,7 +336,7 @@ current_column (void)
 
   /* If the buffer has overlays, text properties,
      or multibyte characters, use a more general algorithm.  */
-  if (buffer_get_intervals (current_buffer)
+  if (buffer_intervals (current_buffer)
       || buffer_has_overlays ()
       || Z != Z_BYTE)
     return current_column_1 ();
@@ -2003,7 +2003,7 @@ whether or not it is currently displayed in some window.  */)
       old_buffer = w->buffer;
       old_charpos = XMARKER (w->pointm)->charpos;
       old_bytepos = XMARKER (w->pointm)->bytepos;
-      WSET (w, buffer, Fcurrent_buffer ());
+      wset_buffer (w, Fcurrent_buffer ());
       set_marker_both (w->pointm, w->buffer,
                        BUF_PT (current_buffer), BUF_PT_BYTE (current_buffer));
     }
@@ -2146,7 +2146,7 @@ whether or not it is currently displayed in some window.  */)
 
   if (BUFFERP (old_buffer))
     {
-      WSET (w, buffer, old_buffer);
+      wset_buffer (w, old_buffer);
       set_marker_both (w->pointm, w->buffer,
                        old_charpos, old_bytepos);
     }
diff --git a/src/insdel.c b/src/insdel.c
index 14d2dab084d..1dceb67bffa 100644
--- a/src/insdel.c
+++ b/src/insdel.c
@@ -844,10 +844,10 @@ insert_1_both (const char *string,
                              PT + nchars, PT_BYTE + nbytes,
                              before_markers);
 
-  if (buffer_get_intervals (current_buffer))
+  if (buffer_intervals (current_buffer))
     offset_intervals (current_buffer, PT, nchars);
 
-  if (!inherit && buffer_get_intervals (current_buffer))
+  if (!inherit && buffer_intervals (current_buffer))
     set_text_properties (make_number (PT), make_number (PT + nchars),
                          Qnil, Qnil, Qnil);
 
@@ -976,7 +976,7 @@ insert_from_string_1 (Lisp_Object string, ptrdiff_t pos, ptrdiff_t pos_byte,
 
   offset_intervals (current_buffer, PT, nchars);
 
-  intervals = string_get_intervals (string);
+  intervals = string_intervals (string);
   /* Get the intervals for the part of the string we are inserting.  */
   if (nbytes < SBYTES (string))
     intervals = copy_intervals (intervals, pos, nchars);
@@ -1017,7 +1017,7 @@ insert_from_gap (ptrdiff_t nchars, ptrdiff_t nbytes)
   adjust_markers_for_insert (GPT - nchars, GPT_BYTE - nbytes,
                              GPT, GPT_BYTE, 0);
 
-  if (buffer_get_intervals (current_buffer))
+  if (buffer_intervals (current_buffer))
     {
       offset_intervals (current_buffer, GPT - nchars, nchars);
       graft_intervals_into_buffer (NULL, GPT - nchars, nchars,
@@ -1157,11 +1157,11 @@ insert_from_buffer_1 (struct buffer *buf,
                              PT_BYTE + outgoing_nbytes,
                              0);
 
-  if (buffer_get_intervals (current_buffer))
+  if (buffer_intervals (current_buffer))
     offset_intervals (current_buffer, PT, nchars);
 
   /* Get the intervals for the part of the string we are inserting.  */
-  intervals = buffer_get_intervals (buf);
+  intervals = buffer_intervals (buf);
   if (nchars < BUF_Z (buf) - BUF_BEG (buf))
     {
       if (buf == current_buffer && PT <= from)
@@ -1226,7 +1226,7 @@ adjust_after_replace (ptrdiff_t from, ptrdiff_t from_byte,
   else if (len < nchars_del)
     adjust_overlays_for_delete (from, nchars_del - len);
 
-  if (buffer_get_intervals (current_buffer))
+  if (buffer_intervals (current_buffer))
     offset_intervals (current_buffer, from, len - nchars_del);
 
   if (from < PT)
@@ -1412,7 +1412,7 @@ replace_range (ptrdiff_t from, ptrdiff_t to, Lisp_Object new,
 
   /* Get the intervals for the part of the string we are inserting--
      not including the combined-before bytes.  */
-  intervals = string_get_intervals (new);
+  intervals = string_intervals (new);
   /* Insert those intervals.  */
   graft_intervals_into_buffer (intervals, from, inschars,
                                current_buffer, inherit);
@@ -1792,7 +1792,7 @@ modify_region (struct buffer *buffer, ptrdiff_t start, ptrdiff_t end,
   if (! preserve_chars_modiff)
     CHARS_MODIFF = MODIFF;
 
-  BSET (buffer, point_before_scroll, Qnil);
+  bset_point_before_scroll (buffer, Qnil);
 
   if (buffer != old_buffer)
     set_buffer_internal (old_buffer);
@@ -1822,7 +1822,7 @@ prepare_to_modify_buffer (ptrdiff_t start, ptrdiff_t end,
   if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer)
     ++windows_or_buffers_changed;
 
-  if (buffer_get_intervals (current_buffer))
+  if (buffer_intervals (current_buffer))
     {
       if (preserve_ptr)
         {
diff --git a/src/intervals.c b/src/intervals.c
index b0ef7c8d3b9..0a85e20e5d9 100644
--- a/src/intervals.c
+++ b/src/intervals.c
@@ -62,6 +62,38 @@ static INTERVAL reproduce_tree (INTERVAL, INTERVAL);
 
 /* Utility functions for intervals.  */
 
+/* Use these functions to set Lisp_Object
+   or pointer slots of struct interval.  */
+
+static inline void
+set_interval_object (INTERVAL i, Lisp_Object obj)
+{
+  eassert (BUFFERP (obj) || STRINGP (obj));
+  i->up_obj = 1;
+  i->up.obj = obj;
+}
+
+static inline void
+set_interval_left (INTERVAL i, INTERVAL left)
+{
+  i->left = left;
+}
+
+static inline void
+set_interval_right (INTERVAL i, INTERVAL right)
+{
+  i->right = right;
+}
+
+/* Make the parent of D be whatever the parent of S is, regardless
+   of the type.  This is used when balancing an interval tree.  */
+
+static inline void
+copy_interval_parent (INTERVAL d, INTERVAL s)
+{
+  d->up = s->up;
+  d->up_obj = s->up_obj;
+}
 
 /* Create the root interval of some object, a buffer or string.  */
 
@@ -79,18 +111,18 @@ create_root_interval (Lisp_Object parent)
       new->total_length = (BUF_Z (XBUFFER (parent))
                            - BUF_BEG (XBUFFER (parent)));
       eassert (0 <= TOTAL_LENGTH (new));
-      buffer_set_intervals (XBUFFER (parent), new);
+      set_buffer_intervals (XBUFFER (parent), new);
       new->position = BEG;
     }
   else if (STRINGP (parent))
     {
       new->total_length = SCHARS (parent);
       eassert (0 <= TOTAL_LENGTH (new));
-      string_set_intervals (parent, new);
+      set_string_intervals (parent, new);
       new->position = 0;
     }
 
-  interval_set_object (new, parent);
+  set_interval_object (new, parent);
 
   return new;
 }
@@ -104,7 +136,7 @@ copy_properties (register INTERVAL source, register INTERVAL target)
     return;
 
   COPY_INTERVAL_CACHE (source, target);
-  interval_set_plist (target, Fcopy_sequence (source->plist));
+  set_interval_plist (target, Fcopy_sequence (source->plist));
 }
 
 /* Merge the properties of interval SOURCE into the properties
@@ -140,7 +172,7 @@ merge_properties (register INTERVAL source, register INTERVAL target)
       if (NILP (val))
         {
           val = XCAR (o);
-          interval_set_plist (target, Fcons (sym, Fcons (val, target->plist)));
+          set_interval_plist (target, Fcons (sym, Fcons (val, target->plist)));
         }
       o = XCDR (o);
     }
@@ -322,21 +354,21 @@ rotate_right (INTERVAL interval)
   if (! ROOT_INTERVAL_P (interval))
     {
       if (AM_LEFT_CHILD (interval))
-        interval_set_left (INTERVAL_PARENT (interval), B);
+        set_interval_left (INTERVAL_PARENT (interval), B);
       else
-        interval_set_right (INTERVAL_PARENT (interval), B);
+        set_interval_right (INTERVAL_PARENT (interval), B);
     }
-  interval_copy_parent (B, interval);
+  copy_interval_parent (B, interval);
 
   /* Make B the parent of A */
   i = B->right;
-  interval_set_right (B, interval);
-  interval_set_parent (interval, B);
+  set_interval_right (B, interval);
+  set_interval_parent (interval, B);
 
   /* Make A point to c */
-  interval_set_left (interval, i);
+  set_interval_left (interval, i);
   if (i)
-    interval_set_parent (i, interval);
+    set_interval_parent (i, interval);
 
   /* A's total length is decreased by the length of B and its left child.  */
   interval->total_length -= B->total_length - LEFT_TOTAL_LENGTH (interval);
@@ -369,21 +401,21 @@ rotate_left (INTERVAL interval)
   if (! ROOT_INTERVAL_P (interval))
     {
       if (AM_LEFT_CHILD (interval))
-        interval_set_left (INTERVAL_PARENT (interval), B);
+        set_interval_left (INTERVAL_PARENT (interval), B);
       else
-        interval_set_right (INTERVAL_PARENT (interval), B);
+        set_interval_right (INTERVAL_PARENT (interval), B);
     }
-  interval_copy_parent (B, interval);
+  copy_interval_parent (B, interval);
 
   /* Make B the parent of A */
   i = B->left;
-  interval_set_left (B, interval);
-  interval_set_parent (interval, B);
+  set_interval_left (B, interval);
+  set_interval_parent (interval, B);
 
   /* Make A point to c */
-  interval_set_right (interval, i);
+  set_interval_right (interval, i);
   if (i)
-    interval_set_parent (i, interval);
+    set_interval_parent (i, interval);
 
   /* A's total length is decreased by the length of B and its right child.  */
   interval->total_length -= B->total_length - RIGHT_TOTAL_LENGTH (interval);
@@ -455,9 +487,9 @@ balance_possible_root_interval (register INTERVAL interval)
   if (have_parent)
     {
       if (BUFFERP (parent))
-        buffer_set_intervals (XBUFFER (parent), interval);
+        set_buffer_intervals (XBUFFER (parent), interval);
       else if (STRINGP (parent))
-        string_set_intervals (parent, interval);
+        set_string_intervals (parent, interval);
     }
 
   return interval;
@@ -493,9 +525,9 @@ buffer_balance_intervals (struct buffer *b)
   INTERVAL i;
 
   eassert (b != NULL);
-  i = buffer_get_intervals (b);
+  i = buffer_intervals (b);
   if (i)
-    buffer_set_intervals (b, balance_an_interval (i));
+    set_buffer_intervals (b, balance_an_interval (i));
 }
 
 /* Split INTERVAL into two pieces, starting the second piece at
@@ -519,20 +551,20 @@ split_interval_right (INTERVAL interval, ptrdiff_t offset)
   ptrdiff_t new_length = LENGTH (interval) - offset;
 
   new->position = position + offset;
-  interval_set_parent (new, interval);
+  set_interval_parent (new, interval);
 
   if (NULL_RIGHT_CHILD (interval))
     {
-      interval_set_right (interval, new);
+      set_interval_right (interval, new);
       new->total_length = new_length;
       eassert (0 <= TOTAL_LENGTH (new));
     }
   else
     {
       /* Insert the new node between INTERVAL and its right child.  */
-      interval_set_right (new, interval->right);
-      interval_set_parent (interval->right, new);
-      interval_set_right (interval, new);
+      set_interval_right (new, interval->right);
+      set_interval_parent (interval->right, new);
+      set_interval_right (interval, new);
       new->total_length = new_length + new->right->total_length;
       eassert (0 <= TOTAL_LENGTH (new));
       balance_an_interval (new);
@@ -564,20 +596,20 @@ split_interval_left (INTERVAL interval, ptrdiff_t offset)
 
   new->position = interval->position;
   interval->position = interval->position + offset;
-  interval_set_parent (new, interval);
+  set_interval_parent (new, interval);
 
   if (NULL_LEFT_CHILD (interval))
     {
-      interval_set_left (interval, new);
+      set_interval_left (interval, new);
       new->total_length = new_length;
       eassert (0 <= TOTAL_LENGTH (new));
     }
   else
     {
       /* Insert the new node between INTERVAL and its left child.  */
-      interval_set_left (new, interval->left);
-      interval_set_parent (new->left, new);
-      interval_set_left (interval, new);
+      set_interval_left (new, interval->left);
+      set_interval_parent (new->left, new);
+      set_interval_left (interval, new);
       new->total_length = new_length + new->left->total_length;
       eassert (0 <= TOTAL_LENGTH (new));
       balance_an_interval (new);
@@ -952,20 +984,20 @@ adjust_intervals_for_insertion (INTERVAL tree,
           RESET_INTERVAL (&newi);
           pleft = prev ? prev->plist : Qnil;
           pright = i ? i->plist : Qnil;
-          interval_set_plist (&newi, merge_properties_sticky (pleft, pright));
+          set_interval_plist (&newi, merge_properties_sticky (pleft, pright));
 
           if (! prev) /* i.e. position == BEG */
             {
               if (! intervals_equal (i, &newi))
                 {
                   i = split_interval_left (i, length);
-                  interval_set_plist (i, newi.plist);
+                  set_interval_plist (i, newi.plist);
                 }
             }
           else if (! intervals_equal (prev, &newi))
             {
               prev = split_interval_right (prev, position - prev->position);
-              interval_set_plist (prev, newi.plist);
+              set_interval_plist (prev, newi.plist);
               if (i && intervals_equal (prev, i))
                 merge_interval_right (prev);
             }
@@ -1190,8 +1222,8 @@ delete_node (register INTERVAL i)
       this->total_length += migrate_amt;
     }
   eassert (0 <= TOTAL_LENGTH (this));
-  interval_set_left (this, migrate);
-  interval_set_parent (migrate, this);
+  set_interval_left (this, migrate);
+  set_interval_parent (migrate, this);
 
   return i->right;
 }
@@ -1216,12 +1248,12 @@ delete_interval (register INTERVAL i)
       GET_INTERVAL_OBJECT (owner, i);
       parent = delete_node (i);
       if (parent)
-        interval_set_object (parent, owner);
+        set_interval_object (parent, owner);
 
       if (BUFFERP (owner))
-        buffer_set_intervals (XBUFFER (owner), parent);
+        set_buffer_intervals (XBUFFER (owner), parent);
       else if (STRINGP (owner))
-        string_set_intervals (owner, parent);
+        set_string_intervals (owner, parent);
       else
         abort ();
 
@@ -1231,15 +1263,15 @@ delete_interval (register INTERVAL i)
   parent = INTERVAL_PARENT (i);
   if (AM_LEFT_CHILD (i))
     {
-      interval_set_left (parent, delete_node (i));
+      set_interval_left (parent, delete_node (i));
       if (parent->left)
-        interval_set_parent (parent->left, parent);
+        set_interval_parent (parent->left, parent);
     }
   else
     {
-      interval_set_right (parent, delete_node (i));
+      set_interval_right (parent, delete_node (i));
       if (parent->right)
-        interval_set_parent (parent->right, parent);
+        set_interval_parent (parent->right, parent);
     }
 }
 
@@ -1320,8 +1352,8 @@ static void
 adjust_intervals_for_deletion (struct buffer *buffer,
                                ptrdiff_t start, ptrdiff_t length)
 {
-  register ptrdiff_t left_to_delete = length;
-  register INTERVAL tree = buffer_get_intervals (buffer);
+  ptrdiff_t left_to_delete = length;
+  INTERVAL tree = buffer_intervals (buffer);
   Lisp_Object parent;
   ptrdiff_t offset;
 
@@ -1336,7 +1368,7 @@ adjust_intervals_for_deletion (struct buffer *buffer,
 
   if (length == TOTAL_LENGTH (tree))
     {
-      buffer_set_intervals (buffer, NULL);
+      set_buffer_intervals (buffer, NULL);
       return;
     }
 
@@ -1353,10 +1385,10 @@ adjust_intervals_for_deletion (struct buffer *buffer,
     {
       left_to_delete -= interval_deletion_adjustment (tree, start - offset,
                                                       left_to_delete);
-      tree = buffer_get_intervals (buffer);
+      tree = buffer_intervals (buffer);
       if (left_to_delete == tree->total_length)
         {
-          buffer_set_intervals (buffer, NULL);
+          set_buffer_intervals (buffer, NULL);
           return;
         }
     }
@@ -1370,11 +1402,11 @@ adjust_intervals_for_deletion (struct buffer *buffer,
 void
 offset_intervals (struct buffer *buffer, ptrdiff_t start, ptrdiff_t length)
 {
-  if (!buffer_get_intervals (buffer) || length == 0)
+  if (!buffer_intervals (buffer) || length == 0)
     return;
 
   if (length > 0)
-    adjust_intervals_for_insertion (buffer_get_intervals (buffer),
+    adjust_intervals_for_insertion (buffer_intervals (buffer),
                                     start, length);
   else
     {
@@ -1510,9 +1542,9 @@ reproduce_interval (INTERVAL source)
   copy_properties (source, target);
 
   if (! NULL_LEFT_CHILD (source))
-    interval_set_left (target, reproduce_tree (source->left, target));
+    set_interval_left (target, reproduce_tree (source->left, target));
   if (! NULL_RIGHT_CHILD (source))
-    interval_set_right (target, reproduce_tree (source->right, target));
+    set_interval_right (target, reproduce_tree (source->right, target));
 
   return target;
 }
@@ -1525,18 +1557,16 @@ reproduce_interval (INTERVAL source)
 static INTERVAL
 reproduce_tree (INTERVAL source, INTERVAL parent)
 {
-  register INTERVAL target = reproduce_interval (source);
-
-  interval_set_parent (target, parent);
+  INTERVAL target = reproduce_interval (source);
+  set_interval_parent (target, parent);
   return target;
 }
 
 static INTERVAL
 reproduce_tree_obj (INTERVAL source, Lisp_Object parent)
 {
-  register INTERVAL target = reproduce_interval (source);
-
-  interval_set_object (target, parent);
+  INTERVAL target = reproduce_interval (source);
+  set_interval_object (target, parent);
   return target;
 }
 
@@ -1582,12 +1612,10 @@ graft_intervals_into_buffer (INTERVAL source, ptrdiff_t position,
                              ptrdiff_t length, struct buffer *buffer,
                              int inherit)
 {
-  register INTERVAL under, over, this;
-  register INTERVAL tree;
+  INTERVAL tree = buffer_intervals (buffer);
+  INTERVAL under, over, this;
   ptrdiff_t over_used;
 
-  tree = buffer_get_intervals (buffer);
-
   /* If the new text has no properties, then with inheritance it
      becomes part of whatever interval it was inserted into.
      To prevent inheritance, we must clear out the properties
@@ -1616,9 +1644,9 @@ graft_intervals_into_buffer (INTERVAL source, ptrdiff_t position,
       Lisp_Object buf;
 
       XSETBUFFER (buf, buffer);
-      buffer_set_intervals (buffer, reproduce_tree_obj (source, buf));
-      buffer_get_intervals (buffer)->position = BUF_BEG (buffer);
-      eassert (buffer_get_intervals (buffer)->up_obj == 1);
+      set_buffer_intervals (buffer, reproduce_tree_obj (source, buf));
+      buffer_intervals (buffer)->position = BUF_BEG (buffer);
+      eassert (buffer_intervals (buffer)->up_obj == 1);
       return;
     }
   else if (!tree)
@@ -1859,7 +1887,7 @@ set_point_both (ptrdiff_t charpos, ptrdiff_t bytepos)
   int have_overlays;
   ptrdiff_t original_position;
 
-  BSET (current_buffer, point_before_scroll, Qnil);
+  bset_point_before_scroll (current_buffer, Qnil);
 
   if (charpos == PT)
     return;
@@ -1876,7 +1904,7 @@ set_point_both (ptrdiff_t charpos, ptrdiff_t bytepos)
 
   /* If we have no text properties and overlays,
      then we can do it quickly.  */
-  if (!buffer_get_intervals (current_buffer) && ! have_overlays)
+  if (!buffer_intervals (current_buffer) && ! have_overlays)
     {
       temp_set_point_both (current_buffer, charpos, bytepos);
       return;
@@ -1885,7 +1913,7 @@ set_point_both (ptrdiff_t charpos, ptrdiff_t bytepos)
   /* Set TO to the interval containing the char after CHARPOS,
      and TOPREV to the interval containing the char before CHARPOS.
      Either one may be null.  They may be equal.  */
-  to = find_interval (buffer_get_intervals (current_buffer), charpos);
+  to = find_interval (buffer_intervals (current_buffer), charpos);
   if (charpos == BEGV)
     toprev = 0;
   else if (to && to->position == charpos)
@@ -1899,7 +1927,7 @@ set_point_both (ptrdiff_t charpos, ptrdiff_t bytepos)
      and FROMPREV to the interval containing the char before PT.
      Either one may be null.  They may be equal.  */
   /* We could cache this and save time.  */
-  from = find_interval (buffer_get_intervals (current_buffer), buffer_point);
+  from = find_interval (buffer_intervals (current_buffer), buffer_point);
   if (buffer_point == BEGV)
     fromprev = 0;
   else if (from && from->position == PT)
@@ -2005,7 +2033,7 @@ set_point_both (ptrdiff_t charpos, ptrdiff_t bytepos)
       /* Set TO to the interval containing the char after CHARPOS,
          and TOPREV to the interval containing the char before CHARPOS.
          Either one may be null.  They may be equal.  */
-      to = find_interval (buffer_get_intervals (current_buffer), charpos);
+      to = find_interval (buffer_intervals (current_buffer), charpos);
       if (charpos == BEGV)
         toprev = 0;
       else if (to && to->position == charpos)
@@ -2138,11 +2166,11 @@ get_property_and_range (ptrdiff_t pos, Lisp_Object prop, Lisp_Object *val,
   INTERVAL i, prev, next;
 
   if (NILP (object))
-    i = find_interval (buffer_get_intervals (current_buffer), pos);
+    i = find_interval (buffer_intervals (current_buffer), pos);
   else if (BUFFERP (object))
-    i = find_interval (buffer_get_intervals (XBUFFER (object)), pos);
+    i = find_interval (buffer_intervals (XBUFFER (object)), pos);
   else if (STRINGP (object))
-    i = find_interval (string_get_intervals (object), pos);
+    i = find_interval (string_intervals (object), pos);
   else
     abort ();
 
@@ -2269,13 +2297,13 @@ void
 copy_intervals_to_string (Lisp_Object string, struct buffer *buffer,
                           ptrdiff_t position, ptrdiff_t length)
 {
-  INTERVAL interval_copy = copy_intervals (buffer_get_intervals (buffer),
+  INTERVAL interval_copy = copy_intervals (buffer_intervals (buffer),
                                            position, length);
   if (!interval_copy)
     return;
 
-  interval_set_object (interval_copy, string);
-  string_set_intervals (string, interval_copy);
+  set_interval_object (interval_copy, string);
+  set_string_intervals (string, interval_copy);
 }
 
 /* Return 1 if strings S1 and S2 have identical properties; 0 otherwise.
@@ -2288,8 +2316,8 @@ compare_string_intervals (Lisp_Object s1, Lisp_Object s2)
   ptrdiff_t pos = 0;
   ptrdiff_t end = SCHARS (s1);
 
-  i1 = find_interval (string_get_intervals (s1), 0);
-  i2 = find_interval (string_get_intervals (s2), 0);
+  i1 = find_interval (string_intervals (s1), 0);
+  i2 = find_interval (string_intervals (s2), 0);
 
   while (pos < end)
     {
@@ -2414,13 +2442,13 @@ set_intervals_multibyte_1 (INTERVAL i, int multi_flag,
     {
       if ((i)->left)
         {
-          interval_set_plist (i, i->left->plist);
+          set_interval_plist (i, i->left->plist);
           (i)->left->total_length = 0;
           delete_interval ((i)->left);
         }
       else
         {
-          interval_set_plist (i, i->right->plist);
+          set_interval_plist (i, i->right->plist);
           (i)->right->total_length = 0;
           delete_interval ((i)->right);
         }
@@ -2434,7 +2462,7 @@ set_intervals_multibyte_1 (INTERVAL i, int multi_flag,
 void
 set_intervals_multibyte (int multi_flag)
 {
-  INTERVAL i = buffer_get_intervals (current_buffer);
+  INTERVAL i = buffer_intervals (current_buffer);
 
   if (i)
     set_intervals_multibyte_1 (i, multi_flag, BEG, BEG_BYTE, Z, Z_BYTE);
diff --git a/src/intervals.h b/src/intervals.h
index a5166c6376f..01e72d7c9db 100644
--- a/src/intervals.h
+++ b/src/intervals.h
@@ -137,47 +137,16 @@ struct interval
    or pointer slots of struct interval.  */
 
 INTERVALS_INLINE void
-interval_set_parent (INTERVAL i, INTERVAL parent)
+set_interval_parent (INTERVAL i, INTERVAL parent)
 {
   i->up_obj = 0;
   i->up.interval = parent;
 }
 
 INTERVALS_INLINE void
-interval_set_object (INTERVAL i, Lisp_Object obj)
-{
-  eassert (BUFFERP (obj) || STRINGP (obj));
-  i->up_obj = 1;
-  i->up.obj = obj;
-}
-
-INTERVALS_INLINE void
-interval_set_left (INTERVAL i, INTERVAL left)
-{
-  i->left = left;
-}
-
-INTERVALS_INLINE void
-interval_set_right (INTERVAL i, INTERVAL right)
-{
-  i->right = right;
-}
-
-INTERVALS_INLINE Lisp_Object
-interval_set_plist (INTERVAL i, Lisp_Object plist)
+set_interval_plist (INTERVAL i, Lisp_Object plist)
 {
   i->plist = plist;
-  return plist;
-}
-
-/* Make the parent of D be whatever the parent of S is, regardless
-   of the type.  This is used when balancing an interval tree.  */
-
-INTERVALS_INLINE void
-interval_copy_parent (INTERVAL d, INTERVAL s)
-{
-  d->up = s->up;
-  d->up_obj = s->up_obj;
 }
 
 /* Get the parent interval, if any, otherwise a null pointer.  Useful
@@ -191,11 +160,11 @@ interval_copy_parent (INTERVAL d, INTERVAL s)
 {                                             \
   (i)->total_length = (i)->position = 0;      \
   (i)->left = (i)->right = NULL;              \
-  interval_set_parent (i, NULL);              \
+  set_interval_parent (i, NULL);              \
   (i)->write_protect = 0;                     \
   (i)->visible = 0;                           \
   (i)->front_sticky = (i)->rear_sticky = 0;   \
-  interval_set_plist (i, Qnil);               \
+  set_interval_plist (i, Qnil);               \
 }
 
 /* Copy the cached property values of interval FROM to interval TO.  */
diff --git a/src/keyboard.c b/src/keyboard.c
index b26a2c88e5d..3d4061accfc 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -18,6 +18,9 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
+
+#define KEYBOARD_INLINE EXTERN_INLINE
+
 #include <signal.h>
 #include <stdio.h>
 #include <setjmp.h>
@@ -469,6 +472,53 @@ static void handle_user_signal (int);
 static char *find_user_signal_name (int);
 static int store_user_signal_events (void);
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+kset_echo_string (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (echo_string) = val;
+}
+static inline void
+kset_kbd_queue (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (kbd_queue) = val;
+}
+static inline void
+kset_keyboard_translate_table (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vkeyboard_translate_table) = val;
+}
+static inline void
+kset_last_prefix_arg (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vlast_prefix_arg) = val;
+}
+static inline void
+kset_last_repeatable_command (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vlast_repeatable_command) = val;
+}
+static inline void
+kset_local_function_key_map (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vlocal_function_key_map) = val;
+}
+static inline void
+kset_overriding_terminal_local_map (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Voverriding_terminal_local_map) = val;
+}
+static inline void
+kset_real_last_command (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vreal_last_command) = val;
+}
+static inline void
+kset_system_key_syms (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (system_key_syms) = val;
+}
+
 
 /* Add C to the echo string, if echoing is going on.
    C can be a character, which is printed prettily ("M-C-x" and all that
@@ -551,8 +601,9 @@ echo_char (Lisp_Object c)
       else if (STRINGP (echo_string))
         echo_string = concat2 (echo_string, build_string (" "));
 
-      KSET (current_kboard, echo_string,
-            concat2 (echo_string, make_string (buffer, ptr - buffer)));
+      kset_echo_string
+        (current_kboard,
+         concat2 (echo_string, make_string (buffer, ptr - buffer)));
 
       echo_now ();
     }
@@ -597,8 +648,9 @@ echo_dash (void)
 
   /* Put a dash at the end of the buffer temporarily,
      but make it go away when the next character is added.  */
-  KSET (current_kboard, echo_string,
-        concat2 (KVAR (current_kboard, echo_string), build_string ("-")));
+  kset_echo_string
+    (current_kboard,
+     concat2 (KVAR (current_kboard, echo_string), build_string ("-")));
   echo_now ();
 }
 
@@ -660,7 +712,7 @@ cancel_echoing (void)
 {
   current_kboard->immediate_echo = 0;
   current_kboard->echo_after_prompt = -1;
-  KSET (current_kboard, echo_string, Qnil);
+  kset_echo_string (current_kboard, Qnil);
   ok_to_echo_at_next_pause = NULL;
   echo_kboard = NULL;
   echo_message_buffer = Qnil;
@@ -684,9 +736,9 @@ static void
 echo_truncate (ptrdiff_t nchars)
 {
   if (STRINGP (KVAR (current_kboard, echo_string)))
-    KSET (current_kboard, echo_string,
-          Fsubstring (KVAR (current_kboard, echo_string),
-                      make_number (0), make_number (nchars)));
+    kset_echo_string (current_kboard,
+                      Fsubstring (KVAR (current_kboard, echo_string),
+                                  make_number (0), make_number (nchars)));
   truncate_echo_area (nchars);
 }
 
@@ -1016,8 +1068,8 @@ cmd_error (Lisp_Object data)
   Vstandard_input = Qt;
   Vexecuting_kbd_macro = Qnil;
   executing_kbd_macro = Qnil;
-  KSET (current_kboard, Vprefix_arg, Qnil);
-  KSET (current_kboard, Vlast_prefix_arg, Qnil);
+  kset_prefix_arg (current_kboard, Qnil);
+  kset_last_prefix_arg (current_kboard, Qnil);
   cancel_echoing ();
 
   /* Avoid unquittable loop if data contains a circular list.  */
@@ -1338,8 +1390,8 @@ command_loop_1 (void)
 #endif
   int already_adjusted = 0;
 
-  KSET (current_kboard, Vprefix_arg, Qnil);
-  KSET (current_kboard, Vlast_prefix_arg, Qnil);
+  kset_prefix_arg (current_kboard, Qnil);
+  kset_last_prefix_arg (current_kboard, Qnil);
   Vdeactivate_mark = Qnil;
   waiting_for_input = 0;
   cancel_echoing ();
@@ -1371,10 +1423,10 @@ command_loop_1 (void)
     }
 
   /* Do this after running Vpost_command_hook, for consistency.  */
-  KSET (current_kboard, Vlast_command, Vthis_command);
-  KSET (current_kboard, Vreal_last_command, Vreal_this_command);
+  kset_last_command (current_kboard, Vthis_command);
+  kset_real_last_command (current_kboard, Vreal_this_command);
   if (!CONSP (last_command_event))
-    KSET (current_kboard, Vlast_repeatable_command, Vreal_this_command);
+    kset_last_repeatable_command (current_kboard, Vreal_this_command);
 
   while (1)
     {
@@ -1546,7 +1598,7 @@ command_loop_1 (void)
           keys = Fkey_description (keys, Qnil);
           bitch_at_user ();
           message_with_string ("%s is undefined", keys, 0);
-          KSET (current_kboard, defining_kbd_macro, Qnil);
+          kset_defining_kbd_macro (current_kboard, Qnil);
           update_mode_lines = 1;
           /* If this is a down-mouse event, don't reset prefix-arg;
              pass it to the command run by the up event.  */
@@ -1556,10 +1608,10 @@ command_loop_1 (void)
                 = parse_modifiers (EVENT_HEAD (last_command_event));
               int modifiers = XINT (XCAR (XCDR (breakdown)));
               if (!(modifiers & down_modifier))
-                KSET (current_kboard, Vprefix_arg, Qnil);
+                kset_prefix_arg (current_kboard, Qnil);
             }
           else
-            KSET (current_kboard, Vprefix_arg, Qnil);
+            kset_prefix_arg (current_kboard, Qnil);
         }
       else
         {
@@ -1596,7 +1648,7 @@ command_loop_1 (void)
             unbind_to (scount, Qnil);
 #endif
           }
-      KSET (current_kboard, Vlast_prefix_arg, Vcurrent_prefix_arg);
+      kset_last_prefix_arg (current_kboard, Vcurrent_prefix_arg);
 
       safe_run_hooks (Qpost_command_hook);
 
@@ -1627,10 +1679,10 @@ command_loop_1 (void)
       if (NILP (KVAR (current_kboard, Vprefix_arg))
           || CONSP (last_command_event))
         {
-          KSET (current_kboard, Vlast_command, Vthis_command);
-          KSET (current_kboard, Vreal_last_command, Vreal_this_command);
+          kset_last_command (current_kboard, Vthis_command);
+          kset_real_last_command (current_kboard, Vreal_this_command);
           if (!CONSP (last_command_event))
-            KSET (current_kboard, Vlast_repeatable_command, Vreal_this_command);
+            kset_last_repeatable_command (current_kboard, Vreal_this_command);
           cancel_echoing ();
           this_command_key_count = 0;
           this_command_key_count_reset = 0;
@@ -2573,7 +2625,7 @@ read_char (int commandflag, ptrdiff_t nmaps, Lisp_Object *maps,
                   abort ();
               }
             if (!CONSP (last))
-              KSET (kb, kbd_queue, Fcons (c, Qnil));
+              kset_kbd_queue (kb, Fcons (c, Qnil));
             else
               XSETCDR (last, Fcons (c, Qnil));
             kb->kbd_queue_has_data = 1;
@@ -2745,8 +2797,8 @@ read_char (int commandflag, ptrdiff_t nmaps, Lisp_Object *maps,
           if (!CONSP (KVAR (current_kboard, kbd_queue)))
             abort ();
           c = XCAR (KVAR (current_kboard, kbd_queue));
-          KSET (current_kboard, kbd_queue,
-                XCDR (KVAR (current_kboard, kbd_queue)));
+          kset_kbd_queue (current_kboard,
+                          XCDR (KVAR (current_kboard, kbd_queue)));
           if (NILP (KVAR (current_kboard, kbd_queue)))
             current_kboard->kbd_queue_has_data = 0;
           input_pending = readable_events (0);
@@ -2813,7 +2865,7 @@ read_char (int commandflag, ptrdiff_t nmaps, Lisp_Object *maps,
                 abort ();
             }
           if (!CONSP (last))
-            KSET (kb, kbd_queue, Fcons (c, Qnil));
+            kset_kbd_queue (kb, Fcons (c, Qnil));
           else
             XSETCDR (last, Fcons (c, Qnil));
           kb->kbd_queue_has_data = 1;
@@ -3071,7 +3123,7 @@ read_char (int commandflag, ptrdiff_t nmaps, Lisp_Object *maps,
 
       cancel_echoing ();
       ok_to_echo_at_next_pause = saved_ok_to_echo;
-      KSET (current_kboard, echo_string, saved_echo_string);
+      kset_echo_string (current_kboard, saved_echo_string);
       current_kboard->echo_after_prompt = saved_echo_after_prompt;
       if (saved_immediate_echo)
         echo_now ();
@@ -3542,9 +3594,9 @@ kbd_buffer_store_event_hold (register struct input_event *event,
 
           if (single_kboard && kb != current_kboard)
             {
-              KSET (kb, kbd_queue,
-                    Fcons (make_lispy_switch_frame (event->frame_or_window),
-                           Fcons (make_number (c), Qnil)));
+              kset_kbd_queue
+                (kb, Fcons (make_lispy_switch_frame (event->frame_or_window),
+                            Fcons (make_number (c), Qnil)));
               kb->kbd_queue_has_data = 1;
               for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++)
                 {
@@ -4367,7 +4419,6 @@ timer_check_2 (void)
 
   while (CONSP (timers) || CONSP (idle_timers))
     {
-      Lisp_Object *vector;
       Lisp_Object timer = Qnil, idle_timer = Qnil;
       EMACS_TIME timer_time, idle_timer_time;
       EMACS_TIME difference;
@@ -4443,15 +4494,14 @@ timer_check_2 (void)
       /* If timer is ripe, run it if it hasn't been run.  */
       if (ripe)
         {
-          vector = XVECTOR (chosen_timer)->contents;
-          if (NILP (vector[0]))
+          if (NILP (AREF (chosen_timer, 0)))
             {
               ptrdiff_t count = SPECPDL_INDEX ();
               Lisp_Object old_deactivate_mark = Vdeactivate_mark;
 
               /* Mark the timer as triggered to prevent problems if the lisp
                  code fails to reschedule it right.  */
-              vector[0] = Qt;
+              ASET (chosen_timer, 0, Qt);
 
               specbind (Qinhibit_quit, Qt);
 
@@ -5416,7 +5466,7 @@ make_lispy_event (struct input_event *event)
           /* We need to use an alist rather than a vector as the cache
              since we can't make a vector long enough.  */
           if (NILP (KVAR (current_kboard, system_key_syms)))
-            KSET (current_kboard, system_key_syms, Fcons (Qnil, Qnil));
+            kset_system_key_syms (current_kboard, Fcons (Qnil, Qnil));
           return modify_event_symbol (event->code,
                                       event->modifiers,
                                       Qfunction_key,
@@ -8395,7 +8445,6 @@ init_tool_bar_items (Lisp_Object reuse)
 static void
 append_tool_bar_item (void)
 {
-  Lisp_Object *to, *from;
   ptrdiff_t incr =
     (ntool_bar_items
      - (ASIZE (tool_bar_items_vector) - TOOL_BAR_ITEM_NSLOTS));
@@ -8407,9 +8456,8 @@ append_tool_bar_item (void)
 
   /* Append entries from tool_bar_item_properties to the end of
      tool_bar_items_vector.  */
-  to = XVECTOR (tool_bar_items_vector)->contents + ntool_bar_items;
-  from = XVECTOR (tool_bar_item_properties)->contents;
-  memcpy (to, from, TOOL_BAR_ITEM_NSLOTS * sizeof *to);
+  vcopy (tool_bar_items_vector, ntool_bar_items, 
+         XVECTOR (tool_bar_item_properties)->contents, TOOL_BAR_ITEM_NSLOTS);
   ntool_bar_items += TOOL_BAR_ITEM_NSLOTS;
 }
 
@@ -8739,11 +8787,11 @@ read_char_minibuf_menu_prompt (int commandflag,
          is not used on replay.
          */
       orig_defn_macro = KVAR (current_kboard, defining_kbd_macro);
-      KSET (current_kboard, defining_kbd_macro, Qnil);
+      kset_defining_kbd_macro (current_kboard, Qnil);
       do
         obj = read_char (commandflag, 0, 0, Qt, 0, NULL);
       while (BUFFERP (obj));
-      KSET (current_kboard, defining_kbd_macro, orig_defn_macro);
+      kset_defining_kbd_macro (current_kboard, orig_defn_macro);
 
       if (!INTEGERP (obj))
         return obj;
@@ -9099,7 +9147,7 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
           /* Install the string STR as the beginning of the string of
              echoing, so that it serves as a prompt for the next
              character.  */
-          KSET (current_kboard, echo_string, prompt);
+          kset_echo_string (current_kboard, prompt);
           current_kboard->echo_after_prompt = SCHARS (prompt);
           echo_now ();
         }
@@ -9345,15 +9393,17 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
 
                 if (!NILP (delayed_switch_frame))
                   {
-                    KSET (interrupted_kboard, kbd_queue,
-                          Fcons (delayed_switch_frame,
-                                 KVAR (interrupted_kboard, kbd_queue)));
+                    kset_kbd_queue
+                      (interrupted_kboard,
+                       Fcons (delayed_switch_frame,
+                              KVAR (interrupted_kboard, kbd_queue)));
                     delayed_switch_frame = Qnil;
                   }
 
                 while (t > 0)
-                  KSET (interrupted_kboard, kbd_queue,
-                        Fcons (keybuf[--t], KVAR (interrupted_kboard, kbd_queue)));
+                  kset_kbd_queue
+                    (interrupted_kboard,
+                     Fcons (keybuf[--t], KVAR (interrupted_kboard, kbd_queue)));
 
                 /* If the side queue is non-empty, ensure it begins with a
                    switch-frame, so we'll replay it in the right context.  */
@@ -9365,9 +9415,10 @@ read_key_sequence (Lisp_Object *keybuf, int bufsize, Lisp_Object prompt,
                   {
                     Lisp_Object frame;
                     XSETFRAME (frame, interrupted_frame);
-                    KSET (interrupted_kboard, kbd_queue,
-                          Fcons (make_lispy_switch_frame (frame),
-                                 KVAR (interrupted_kboard, kbd_queue)));
+                    kset_kbd_queue
+                      (interrupted_kboard,
+                       Fcons (make_lispy_switch_frame (frame),
+                              KVAR (interrupted_kboard, kbd_queue)));
                   }
                 mock_input = 0;
                 orig_local_map = get_local_map (PT, current_buffer, Qlocal_map);
@@ -10261,7 +10312,7 @@ a special event, so ignore the prefix argument and don't clear it.  */)
     {
       prefixarg = KVAR (current_kboard, Vprefix_arg);
       Vcurrent_prefix_arg = prefixarg;
-      KSET (current_kboard, Vprefix_arg, Qnil);
+      kset_prefix_arg (current_kboard, Qnil);
     }
   else
     prefixarg = Qnil;
@@ -10435,10 +10486,10 @@ DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0,
   else
     {
       val = Fvector (NUM_RECENT_KEYS, keys);
-      memcpy (XVECTOR (val)->contents, keys + recent_keys_index,
-              (NUM_RECENT_KEYS - recent_keys_index) * word_size);
-      memcpy (XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index,
-              keys, recent_keys_index * word_size);
+      vcopy (val, 0, keys + recent_keys_index,
+             NUM_RECENT_KEYS - recent_keys_index);
+      vcopy (val, NUM_RECENT_KEYS - recent_keys_index,
+             keys, recent_keys_index);
       return val;
     }
 }
@@ -11256,30 +11307,30 @@ The `posn-' functions access elements of such lists.  */)
 void
 init_kboard (KBOARD *kb)
 {
-  KSET (kb, Voverriding_terminal_local_map, Qnil);
-  KSET (kb, Vlast_command, Qnil);
-  KSET (kb, Vreal_last_command, Qnil);
-  KSET (kb, Vkeyboard_translate_table, Qnil);
-  KSET (kb, Vlast_repeatable_command, Qnil);
-  KSET (kb, Vprefix_arg, Qnil);
-  KSET (kb, Vlast_prefix_arg, Qnil);
-  KSET (kb, kbd_queue, Qnil);
+  kset_overriding_terminal_local_map (kb, Qnil);
+  kset_last_command (kb, Qnil);
+  kset_real_last_command (kb, Qnil);
+  kset_keyboard_translate_table (kb, Qnil);
+  kset_last_repeatable_command (kb, Qnil);
+  kset_prefix_arg (kb, Qnil);
+  kset_last_prefix_arg (kb, Qnil);
+  kset_kbd_queue (kb, Qnil);
   kb->kbd_queue_has_data = 0;
   kb->immediate_echo = 0;
-  KSET (kb, echo_string, Qnil);
+  kset_echo_string (kb, Qnil);
   kb->echo_after_prompt = -1;
   kb->kbd_macro_buffer = 0;
   kb->kbd_macro_bufsize = 0;
-  KSET (kb, defining_kbd_macro, Qnil);
-  KSET (kb, Vlast_kbd_macro, Qnil);
+  kset_defining_kbd_macro (kb, Qnil);
+  kset_last_kbd_macro (kb, Qnil);
   kb->reference_count = 0;
-  KSET (kb, Vsystem_key_alist, Qnil);
-  KSET (kb, system_key_syms, Qnil);
-  KSET (kb, Vwindow_system, Qt);        /* Unset.  */
-  KSET (kb, Vinput_decode_map, Fmake_sparse_keymap (Qnil));
-  KSET (kb, Vlocal_function_key_map, Fmake_sparse_keymap (Qnil));
+  kset_system_key_alist (kb, Qnil);
+  kset_system_key_syms (kb, Qnil);
+  kset_window_system (kb, Qt);  /* Unset.  */
+  kset_input_decode_map (kb, Fmake_sparse_keymap (Qnil));
+  kset_local_function_key_map (kb, Fmake_sparse_keymap (Qnil));
   Fset_keymap_parent (KVAR (kb, Vlocal_function_key_map), Vfunction_key_map);
-  KSET (kb, Vdefault_minibuffer_frame, Qnil);
+  kset_default_minibuffer_frame (kb, Qnil);
 }
 
 /*
@@ -11355,7 +11406,7 @@ init_keyboard (void)
   init_kboard (current_kboard);
   /* A value of nil for Vwindow_system normally means a tty, but we also use
      it for the initial terminal since there is no window system there.  */
-  KSET (current_kboard, Vwindow_system, Qnil);
+  kset_window_system (current_kboard, Qnil);
 
   if (!noninteractive)
     {
diff --git a/src/keyboard.h b/src/keyboard.h
index f83643d6f6e..91484b3649b 100644
--- a/src/keyboard.h
+++ b/src/keyboard.h
@@ -19,10 +19,14 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "systime.h"            /* for EMACS_TIME, Time */
 #include "coding.h"             /* for ENCODE_UTF_8 and ENCODE_SYSTEM */
 
+INLINE_HEADER_BEGIN
+#ifndef KEYBOARD_INLINE
+# define KEYBOARD_INLINE INLINE
+#endif
+
 /* Most code should use this macro to access Lisp fields in struct kboard.  */
 
 #define KVAR(kboard, field) ((kboard)->INTERNAL_FIELD (field))
-#define KSET(kboard, field, value) ((kboard)->INTERNAL_FIELD (field) = (value))
 
 /* Each KBOARD represents one logical input stream from which Emacs
    gets input.  If we are using ordinary terminals, it has one KBOARD
@@ -173,6 +177,47 @@ struct kboard
     char echo_after_prompt;
   };
 
+KEYBOARD_INLINE void
+kset_default_minibuffer_frame (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vdefault_minibuffer_frame) = val;
+}
+KEYBOARD_INLINE void
+kset_defining_kbd_macro (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (defining_kbd_macro) = val;
+}
+KEYBOARD_INLINE void
+kset_input_decode_map (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vinput_decode_map) = val;
+}
+KEYBOARD_INLINE void
+kset_last_command (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vlast_command) = val;
+}
+KEYBOARD_INLINE void
+kset_last_kbd_macro (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vlast_kbd_macro) = val;
+}
+KEYBOARD_INLINE void
+kset_prefix_arg (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vprefix_arg) = val;
+}
+KEYBOARD_INLINE void
+kset_system_key_alist (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vsystem_key_alist) = val;
+}
+KEYBOARD_INLINE void
+kset_window_system (struct kboard *kb, Lisp_Object val)
+{
+  kb->INTERNAL_FIELD (Vwindow_system) = val;
+}
+
 /* Temporarily used before a frame has been opened. */
 extern KBOARD *initial_kboard;
 
@@ -510,3 +555,5 @@ extern void mark_kboards (void);
 #ifdef WINDOWSNT
 extern const char *const lispy_function_keys[];
 #endif
+
+INLINE_HEADER_END
diff --git a/src/keymap.c b/src/keymap.c
index c550b37c1d6..21f7dcb5d37 100644
--- a/src/keymap.c
+++ b/src/keymap.c
@@ -1854,7 +1854,7 @@ If KEYMAP is nil, that means no local keymap.  */)
   if (!NILP (keymap))
     keymap = get_keymap (keymap, 1, 1);
 
-  BSET (current_buffer, keymap, keymap);
+  bset_keymap (current_buffer, keymap);
 
   return Qnil;
 }
diff --git a/src/lisp.h b/src/lisp.h
index 8ac01211a1f..d9a7c9d0bdc 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -124,7 +124,7 @@ extern _Noreturn void die (const char *, const char *, int);
    eassert macro altogether, e.g., if XSTRING (x) uses eassert to test
    STRINGP (x), but a particular use of XSTRING is invoked only after
    testing that STRINGP (x) is true, making the test redundant.  */
-extern int suppress_checking EXTERNALLY_VISIBLE;
+extern bool suppress_checking EXTERNALLY_VISIBLE;
 
 # define eassert(cond)                                          \
    ((cond) || suppress_checking                                 \
@@ -702,7 +702,7 @@ struct Lisp_Cons
 #define CDR_SAFE(c)                             \
   (CONSP ((c)) ? XCDR ((c)) : Qnil)
 
-/* Nonzero if STR is a multibyte string.  */
+/* True if STR is a multibyte string.  */
 #define STRING_MULTIBYTE(STR)  \
   (XSTRING (STR)->size_byte >= 0)
 
@@ -923,7 +923,7 @@ enum
    8-bit European characters.  Do not check validity of CT.  */
 #define CHAR_TABLE_SET(CT, IDX, VAL)                                    \
   (ASCII_CHAR_P (IDX) && SUB_CHAR_TABLE_P (XCHAR_TABLE (CT)->ascii)     \
-   ? sub_char_table_set_contents (XCHAR_TABLE (CT)->ascii, IDX, VAL)    \
+   ? set_sub_char_table_contents (XCHAR_TABLE (CT)->ascii, IDX, VAL)    \
    : char_table_set (CT, IDX, VAL))
 
 enum CHARTAB_SIZE_BITS
@@ -936,12 +936,6 @@ enum CHARTAB_SIZE_BITS
 
 extern const int chartab_size[4];
 
-/* Most code should use this macro to set non-array Lisp fields in struct
-   Lisp_Char_Table.  For CONTENTS and EXTRAS, use char_table_set_contents
-   and char_table_set_extras, respectively.  */
-
-#define CSET(c, field, value) ((c)->field = (value))
-
 struct Lisp_Char_Table
   {
     /* HEADER.SIZE is the vector's size field, which also holds the
@@ -990,7 +984,7 @@ struct Lisp_Sub_Char_Table
     /* Minimum character covered by the sub char-table.  */
     Lisp_Object min_char;
 
-    /* Use sub_char_table_set_contents to set this.  */
+    /* Use set_sub_char_table_contents to set this.  */
     Lisp_Object contents[1];
   };
 
@@ -1472,14 +1466,6 @@ struct Lisp_Buffer_Local_Value
     Lisp_Object valcell;
   };
 
-#define BLV_FOUND(blv) \
-  (eassert ((blv)->found == !EQ ((blv)->defcell, (blv)->valcell)), (blv)->found)
-#define SET_BLV_FOUND(blv, v) \
-  (eassert ((v) == !EQ ((blv)->defcell, (blv)->valcell)), (blv)->found = (v))
-
-#define BLV_VALUE(blv) (XCDR ((blv)->valcell))
-#define SET_BLV_VALUE(blv, v) (XSETCDR ((blv)->valcell, v))
-
 /* Like Lisp_Objfwd except that value lives in a slot in the
    current kboard.  */
 struct Lisp_Kboard_Objfwd
@@ -2358,32 +2344,67 @@ gc_aset (Lisp_Object array, ptrdiff_t idx, Lisp_Object val)
   XVECTOR (array)->contents[idx] = val;
 }
 
+/* Copy COUNT Lisp_Objects from ARGS to contents of V starting from OFFSET.  */
+
 LISP_INLINE void
-set_hash_key (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+vcopy (Lisp_Object v, ptrdiff_t offset, Lisp_Object *args, ptrdiff_t count)
+{
+  eassert (0 <= offset && 0 <= count && offset + count <= ASIZE (v));
+  memcpy (XVECTOR (v)->contents + offset, args, count * sizeof *args);
+}
+
+/* Functions to modify hash tables.  */
+
+LISP_INLINE void
+set_hash_key_and_value (struct Lisp_Hash_Table *h, Lisp_Object key_and_value)
+{
+  h->key_and_value = key_and_value;
+}
+
+LISP_INLINE void
+set_hash_key_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
 {
   gc_aset (h->key_and_value, 2 * idx, val);
 }
 
 LISP_INLINE void
-set_hash_value (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+set_hash_value_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
 {
   gc_aset (h->key_and_value, 2 * idx + 1, val);
 }
 
 LISP_INLINE void
-set_hash_next (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+set_hash_next (struct Lisp_Hash_Table *h, Lisp_Object next)
+{
+  h->next = next;
+}
+
+LISP_INLINE void
+set_hash_next_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
 {
   gc_aset (h->next, idx, val);
 }
 
 LISP_INLINE void
-set_hash_hash (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+set_hash_hash (struct Lisp_Hash_Table *h, Lisp_Object hash)
+{
+  h->hash = hash;
+}
+
+LISP_INLINE void
+set_hash_hash_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
 {
   gc_aset (h->hash, idx, val);
 }
 
 LISP_INLINE void
-set_hash_index (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
+set_hash_index (struct Lisp_Hash_Table *h, Lisp_Object index)
+{
+  h->index = index;
+}
+
+LISP_INLINE void
+set_hash_index_slot (struct Lisp_Hash_Table *h, ptrdiff_t idx, Lisp_Object val)
 {
   gc_aset (h->index, idx, val);
 }
@@ -2415,6 +2436,52 @@ set_symbol_next (Lisp_Object sym, struct Lisp_Symbol *next)
   XSYMBOL (sym)->next = next;
 }
 
+/* Buffer-local (also frame-local) variable access functions.  */
+
+LISP_INLINE int
+blv_found (struct Lisp_Buffer_Local_Value *blv)
+{
+  eassert (blv->found == !EQ (blv->defcell, blv->valcell));
+  return blv->found;
+}
+
+LISP_INLINE void
+set_blv_found (struct Lisp_Buffer_Local_Value *blv, int found)
+{
+  eassert (found == !EQ (blv->defcell, blv->valcell));
+  blv->found = found;
+}
+
+LISP_INLINE Lisp_Object
+blv_value (struct Lisp_Buffer_Local_Value *blv)
+{
+  return XCDR (blv->valcell);
+}
+
+LISP_INLINE void
+set_blv_value (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val)
+{
+  XSETCDR (blv->valcell, val);
+}
+
+LISP_INLINE void
+set_blv_where (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val)
+{
+  blv->where = val;
+}
+
+LISP_INLINE void
+set_blv_defcell (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val)
+{
+  blv->defcell = val;
+}
+
+LISP_INLINE void
+set_blv_valcell (struct Lisp_Buffer_Local_Value *blv, Lisp_Object val)
+{
+  blv->valcell = val;
+}
+
 /* Set overlay's property list.  */
 
 LISP_INLINE void
@@ -2426,7 +2493,7 @@ set_overlay_plist (Lisp_Object overlay, Lisp_Object plist)
 /* Get text properties of S.  */
 
 LISP_INLINE INTERVAL
-string_get_intervals (Lisp_Object s)
+string_intervals (Lisp_Object s)
 {
   return XSTRING (s)->intervals;
 }
@@ -2434,29 +2501,53 @@ string_get_intervals (Lisp_Object s)
 /* Set text properties of S to I.  */
 
 LISP_INLINE void
-string_set_intervals (Lisp_Object s, INTERVAL i)
+set_string_intervals (Lisp_Object s, INTERVAL i)
 {
   XSTRING (s)->intervals = i;
 }
 
+/* Set a Lisp slot in TABLE to VAL.  Most code should use this instead
+   of setting slots directly.  */
+
+LISP_INLINE void
+set_char_table_ascii (Lisp_Object table, Lisp_Object val)
+{
+  XCHAR_TABLE (table)->ascii = val;
+}
+LISP_INLINE void
+set_char_table_defalt (Lisp_Object table, Lisp_Object val)
+{
+  XCHAR_TABLE (table)->defalt = val;
+}
+LISP_INLINE void
+set_char_table_parent (Lisp_Object table, Lisp_Object val)
+{
+  XCHAR_TABLE (table)->parent = val;
+}
+LISP_INLINE void
+set_char_table_purpose (Lisp_Object table, Lisp_Object val)
+{
+  XCHAR_TABLE (table)->purpose = val;
+}
+
 /* Set different slots in (sub)character tables.  */
 
 LISP_INLINE void
-char_table_set_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
+set_char_table_extras (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
 {
   eassert (0 <= idx && idx < CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (table)));
   XCHAR_TABLE (table)->extras[idx] = val;
 }
 
 LISP_INLINE void
-char_table_set_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
+set_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
 {
   eassert (0 <= idx && idx < (1 << CHARTAB_SIZE_BITS_0));
   XCHAR_TABLE (table)->contents[idx] = val;
 }
 
 LISP_INLINE void
-sub_char_table_set_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
+set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
 {
   XSUB_CHAR_TABLE (table)->contents[idx] = val;
 }
@@ -2708,7 +2799,7 @@ extern Lisp_Object echo_area_buffer[2];
 extern void add_to_log (const char *, Lisp_Object, Lisp_Object);
 extern void check_message_stack (void);
 extern void setup_echo_area_for_printing (int);
-extern int push_message (void);
+extern bool push_message (void);
 extern Lisp_Object pop_message_unwind (Lisp_Object);
 extern Lisp_Object restore_message_unwind (Lisp_Object);
 extern void restore_message (void);
@@ -2751,7 +2842,7 @@ extern void uninterrupt_malloc (void);
 extern void malloc_warning (const char *);
 extern _Noreturn void memory_full (size_t);
 extern _Noreturn void buffer_memory_full (ptrdiff_t);
-extern int survives_gc_p (Lisp_Object);
+extern bool survives_gc_p (Lisp_Object);
 extern void mark_object (Lisp_Object);
 #if defined REL_ALLOC && !defined SYSTEM_MALLOC
 extern void refill_memory_reserve (void);
@@ -2790,8 +2881,8 @@ extern Lisp_Object make_uninit_string (EMACS_INT);
 extern Lisp_Object make_uninit_multibyte_string (EMACS_INT, EMACS_INT);
 extern Lisp_Object make_string_from_bytes (const char *, ptrdiff_t, ptrdiff_t);
 extern Lisp_Object make_specified_string (const char *,
-                                          ptrdiff_t, ptrdiff_t, int);
-extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, int);
+                                          ptrdiff_t, ptrdiff_t, bool);
+extern Lisp_Object make_pure_string (const char *, ptrdiff_t, ptrdiff_t, bool);
 extern Lisp_Object make_pure_c_string (const char *, ptrdiff_t);
 
 /* Make a string allocated in pure space, use STR as string data.  */
@@ -2825,8 +2916,8 @@ extern struct window *allocate_window (void);
 extern struct frame *allocate_frame (void);
 extern struct Lisp_Process *allocate_process (void);
 extern struct terminal *allocate_terminal (void);
-extern int gc_in_progress;
-extern int abort_on_gc;
+extern bool gc_in_progress;
+extern bool abort_on_gc;
 extern Lisp_Object make_float (double);
 extern void display_malloc_warning (void);
 extern ptrdiff_t inhibit_garbage_collection (void);
@@ -2859,9 +2950,8 @@ extern Lisp_Object copy_char_table (Lisp_Object);
 extern Lisp_Object char_table_ref (Lisp_Object, int);
 extern Lisp_Object char_table_ref_and_range (Lisp_Object, int,
                                              int *, int *);
-extern Lisp_Object char_table_set (Lisp_Object, int, Lisp_Object);
-extern Lisp_Object char_table_set_range (Lisp_Object, int, int,
-                                         Lisp_Object);
+extern void char_table_set (Lisp_Object, int, Lisp_Object);
+extern void char_table_set_range (Lisp_Object, int, int, Lisp_Object);
 extern int char_table_translate (Lisp_Object, int);
 extern void map_char_table (void (*) (Lisp_Object, Lisp_Object,
                             Lisp_Object),
diff --git a/src/lread.c b/src/lread.c
index 94ae4dd4282..b0413c98765 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -189,7 +189,7 @@ static int readbyte_from_string (int, Lisp_Object);
 static int unread_char;
 
 static int
-readchar (Lisp_Object readcharfun, int *multibyte)
+readchar (Lisp_Object readcharfun, bool *multibyte)
 {
   Lisp_Object tem;
   register int c;
@@ -2354,9 +2354,9 @@ read_integer (Lisp_Object readcharfun, EMACS_INT radix)
 static Lisp_Object
 read1 (register Lisp_Object readcharfun, int *pch, int first_in_list)
 {
-  register int c;
-  unsigned uninterned_symbol = 0;
-  int multibyte;
+  int c;
+  bool uninterned_symbol = 0;
+  bool multibyte;
 
   *pch = 0;
   load_each_byte = 0;
@@ -3189,8 +3189,8 @@ substitute_object_recurse (Lisp_Object object, Lisp_Object placeholder, Lisp_Obj
         /* Check for text properties in each interval.
            substitute_in_interval contains part of the logic.  */
 
-        INTERVAL    root_interval = string_get_intervals (subtree);
-        Lisp_Object arg           = Fcons (object, placeholder);
+        INTERVAL root_interval = string_intervals (subtree);
+        Lisp_Object arg = Fcons (object, placeholder);
 
         traverse_intervals_noorder (root_interval,
                                     &substitute_in_interval, arg);
@@ -3211,7 +3211,7 @@ substitute_in_interval (INTERVAL interval, Lisp_Object arg)
   Lisp_Object object      = Fcar (arg);
   Lisp_Object placeholder = Fcdr (arg);
 
-  SUBSTITUTE (interval->plist, interval_set_plist (interval, true_value));
+  SUBSTITUTE (interval->plist, set_interval_plist (interval, true_value));
 }
 
 
@@ -3406,7 +3406,7 @@ read_vector (Lisp_Object readcharfun, int bytecodeflag)
               /* Delay handling the bytecode slot until we know whether
                  it is lazily-loaded (we can tell by whether the
                  constants slot is nil).  */
-              ptr[COMPILED_CONSTANTS] = item;
+              ASET (vector, COMPILED_CONSTANTS, item);
               item = Qnil;
             }
           else if (i == COMPILED_CONSTANTS)
@@ -3432,7 +3432,7 @@ read_vector (Lisp_Object readcharfun, int bytecodeflag)
                 }
 
               /* Now handle the bytecode slot.  */
-              ptr[COMPILED_BYTECODE] = bytestr;
+              ASET (vector, COMPILED_BYTECODE, bytestr);
             }
           else if (i == COMPILED_DOC_STRING
                    && STRINGP (item)
@@ -3444,7 +3444,7 @@ read_vector (Lisp_Object readcharfun, int bytecodeflag)
                 item = Fstring_as_multibyte (item);
             }
         }
-      ptr[i] = item;
+      ASET (vector, i, item);
       otem = XCONS (tem);
       tem = Fcdr (tem);
       free_cons (otem);
diff --git a/src/macros.c b/src/macros.c
index d74d12e6158..e81068181b9 100644
--- a/src/macros.c
+++ b/src/macros.c
@@ -127,7 +127,7 @@ macro before appending to it. */)
 
       message ("Appending to kbd macro...");
     }
-  KSET (current_kboard, defining_kbd_macro, Qt);
+  kset_defining_kbd_macro (current_kboard, Qt);
 
   return Qnil;
 }
@@ -137,12 +137,13 @@ macro before appending to it. */)
 void
 end_kbd_macro (void)
 {
-  KSET (current_kboard, defining_kbd_macro, Qnil);
+  kset_defining_kbd_macro (current_kboard, Qnil);
   update_mode_lines++;
-  KSET (current_kboard, Vlast_kbd_macro,
-        make_event_array ((current_kboard->kbd_macro_end 
-                           - current_kboard->kbd_macro_buffer),
-                          current_kboard->kbd_macro_buffer));
+  kset_last_kbd_macro
+    (current_kboard,
+     make_event_array ((current_kboard->kbd_macro_end
+                        - current_kboard->kbd_macro_buffer),
+                       current_kboard->kbd_macro_buffer));
 }
 
 DEFUN ("end-kbd-macro", Fend_kbd_macro, Send_kbd_macro, 0, 2, "p",
@@ -330,7 +331,7 @@ each iteration of the macro.  Iteration stops if LOOPFUNC returns nil.  */)
       executing_kbd_macro = final;
       executing_kbd_macro_index = 0;
 
-      KSET (current_kboard, Vprefix_arg, Qnil);
+      kset_prefix_arg (current_kboard, Qnil);
 
       if (!NILP (loopfunc))
         {
diff --git a/src/makefile.w32-in b/src/makefile.w32-in
index 9c13f561a04..bdb292099bc 100644
--- a/src/makefile.w32-in
+++ b/src/makefile.w32-in
@@ -1448,6 +1448,7 @@ $(BLD)/unexw32.$(O) : \
 $(BLD)/vm-limit.$(O) : \
         $(SRC)/vm-limit.c \
         $(SRC)/mem-limits.h \
+        $(NT_INC)/unistd.h \
         $(CONFIG_H) \
         $(LISP_H)
 
diff --git a/src/minibuf.c b/src/minibuf.c
index 06ea415db62..2154d1654df 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -565,11 +565,11 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
 
   /* Defeat (setq-default truncate-lines t), since truncated lines do
      not work correctly in minibuffers.  (Bug#5715, etc)  */
-  BSET (current_buffer, truncate_lines, Qnil);
+  bset_truncate_lines (current_buffer, Qnil);
 
   /* If appropriate, copy enable-multibyte-characters into the minibuffer.  */
   if (inherit_input_method)
-    BSET (current_buffer, enable_multibyte_characters, enable_multibyte);
+    bset_enable_multibyte_characters (current_buffer, enable_multibyte);
 
   /* The current buffer's default directory is usually the right thing
      for our minibuffer here.  However, if you're typing a command at
@@ -580,7 +580,7 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
      you think of something better to do?  Find another buffer with a
      better directory, and use that one instead.  */
   if (STRINGP (ambient_dir))
-    BSET (current_buffer, directory, ambient_dir);
+    bset_directory (current_buffer, ambient_dir);
   else
     {
       Lisp_Object buf_list;
@@ -594,8 +594,8 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
           other_buf = XCDR (XCAR (buf_list));
           if (STRINGP (BVAR (XBUFFER (other_buf), directory)))
             {
-              BSET (current_buffer, directory,
-                   BVAR (XBUFFER (other_buf), directory));
+              bset_directory (current_buffer,
+                              BVAR (XBUFFER (other_buf), directory));
               break;
             }
         }
@@ -672,7 +672,7 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
     }
 
   clear_message (1, 1);
-  BSET (current_buffer, keymap, map);
+  bset_keymap (current_buffer, map);
 
   /* Turn on an input method stored in INPUT_METHOD if any.  */
   if (STRINGP (input_method) && !NILP (Ffboundp (Qactivate_input_method)))
@@ -681,7 +681,7 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
   Frun_hooks (1, &Qminibuffer_setup_hook);
 
   /* Don't allow the user to undo past this point.  */
-  BSET (current_buffer, undo_list, Qnil);
+  bset_undo_list (current_buffer, Qnil);
 
   recursive_edit_1 ();
 
diff --git a/src/msdos.c b/src/msdos.c
index bcb7fbe75e0..a214456d104 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -520,8 +520,8 @@ dos_set_window_size (int *rows, int *cols)
 
   /* If the user specified a special video mode for these dimensions,
      use that mode.  */
-  video_mode 
-    = Fsymbol_value (Fintern_soft (make_formatted_string 
+  video_mode
+    = Fsymbol_value (Fintern_soft (make_formatted_string
                                    (video_name, "screen-dimensions-%dx%d",
                                     *rows, *cols), Qnil));
 
@@ -1801,7 +1801,7 @@ internal_terminal_init (void)
     }
 
   tty = FRAME_TTY (sf);
-  KSET (current_kboard, Vwindow_system, Qpc);
+  kset_window_system (current_kboard, Qpc);
   sf->output_method = output_msdos_raw;
   if (init_needed)
     {
@@ -2434,10 +2434,10 @@ and then the scan code.  */)
   else
     {
       val = Fvector (NUM_RECENT_DOSKEYS, keys);
-      memcpy (XVECTOR (val)->contents, keys + recent_doskeys_index,
-              (NUM_RECENT_DOSKEYS - recent_doskeys_index) * word_size);
-      memcpy (XVECTOR (val)->contents + NUM_RECENT_DOSKEYS - recent_doskeys_index,
-              keys, recent_doskeys_index * word_size);
+      vcopy (val, 0, keys + recent_doskeys_index,
+             NUM_RECENT_DOSKEYS - recent_doskeys_index);
+      vcopy (val, NUM_RECENT_DOSKEYS - recent_doskeys_index,
+             keys, recent_doskeys_index);
       return val;
     }
 }
diff --git a/src/nsfns.m b/src/nsfns.m
index 1b39f0257a5..e8b5d22077a 100644
--- a/src/nsfns.m
+++ b/src/nsfns.m
@@ -447,7 +447,7 @@ x_set_icon_name (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   else if (!STRINGP (oldval) && EQ (oldval, Qnil) == EQ (arg, Qnil))
     return;
 
-  FSET (f, icon_name, arg);
+  fset_icon_name (f, arg);
 
   if (NILP (arg))
     {
@@ -539,7 +539,7 @@ ns_set_name (struct frame *f, Lisp_Object name, int explicit)
   if (! NILP (Fstring_equal (name, f->name)))
     return;
 
-  FSET (f, name, name);
+  fset_name (f, name);
 
   /* title overrides explicit name */
   if (! NILP (f->title))
@@ -590,7 +590,7 @@ x_set_title (struct frame *f, Lisp_Object name, Lisp_Object old_name)
 
   update_mode_lines = 1;
 
-  FSET (f, title, name);
+  fset_title (f, name);
 
   if (NILP (name))
     name = f->name;
@@ -676,7 +676,7 @@ ns_set_name_as_filename (struct frame *f)
 
       [[view window] setRepresentedFilename: fstr];
       [[view window] setTitle: str];
-      FSET (f, name, name);
+      fset_name (f, name);
     }
 
   [pool release];
@@ -1204,11 +1204,11 @@ This function is an internal primitive--use `make-frame' instead.  */)
 
   FRAME_FONTSET (f) = -1;
 
-  FSET (f, icon_name, x_get_arg (dpyinfo, parms, Qicon_name,
-                                 "iconName", "Title",
-                                 RES_TYPE_STRING));
+  fset_icon_name (f, x_get_arg (dpyinfo, parms, Qicon_name,
+                                "iconName", "Title",
+                                RES_TYPE_STRING));
   if (! STRINGP (f->icon_name))
-    FSET (f, icon_name, Qnil);
+    fset_icon_name (f, Qnil);
 
   FRAME_NS_DISPLAY_INFO (f) = dpyinfo;
 
@@ -1231,12 +1231,12 @@ This function is an internal primitive--use `make-frame' instead.  */)
      be set.  */
   if (EQ (name, Qunbound) || NILP (name) || ! STRINGP (name))
     {
-      FSET (f, name, build_string ([ns_app_name UTF8String]));
+      fset_name (f, build_string ([ns_app_name UTF8String]));
       f->explicit_name = 0;
     }
   else
     {
-      FSET (f, name, name);
+      fset_name (f, name);
       f->explicit_name = 1;
       specbind (Qx_resource_name, name);
     }
@@ -1391,13 +1391,13 @@ This function is an internal primitive--use `make-frame' instead.  */)
   if (FRAME_HAS_MINIBUF_P (f)
       && (!FRAMEP (KVAR (kb, Vdefault_minibuffer_frame))
           || !FRAME_LIVE_P (XFRAME (KVAR (kb, Vdefault_minibuffer_frame)))))
-    KSET (kb, Vdefault_minibuffer_frame, frame);
+    kset_default_minibuffer_frame (kb, frame);
 
   /* All remaining specified parameters, which have not been "used"
      by x_get_arg and friends, now go in the misc. alist of the frame.  */
   for (tem = parms; CONSP (tem); tem = XCDR (tem))
     if (CONSP (XCAR (tem)) && !NILP (XCAR (XCAR (tem))))
-      FSET (f, param_alist, Fcons (XCAR (tem), f->param_alist));
+      fset_param_alist (f, Fcons (XCAR (tem), f->param_alist));
 
   UNGCPRO;
 
diff --git a/src/nsfont.m b/src/nsfont.m
index 1f8d28cd238..412a6777c64 100644
--- a/src/nsfont.m
+++ b/src/nsfont.m
@@ -270,10 +270,11 @@ ns_ascii_average_width (NSFont *sfont)
 
   if (!ascii_printable)
     {
-      char chars[95];
+      char chars[96];
       int ch;
       for (ch = 0; ch < 95; ch++)
         chars[ch] = ' ' + ch;
+      chars[95] = '\0';
 
       ascii_printable = [[NSString alloc] initWithFormat: @"%s", chars];
     }
diff --git a/src/nsmenu.m b/src/nsmenu.m
index 657b9306942..e8a0b43a01b 100644
--- a/src/nsmenu.m
+++ b/src/nsmenu.m
@@ -214,7 +214,7 @@ ns_update_menubar (struct frame *f, int deep_p, EmacsMenu *submenu)
       if (! NILP (Vlucid_menu_bar_dirty_flag))
         call0 (Qrecompute_lucid_menubar);
       safe_run_hooks (Qmenu_bar_update_hook);
-      FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+      fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
 
       /* Now ready to go */
       items = FRAME_MENU_BAR_ITEMS (f);
@@ -340,7 +340,7 @@ ns_update_menubar (struct frame *f, int deep_p, EmacsMenu *submenu)
         }
       /* The menu items are different, so store them in the frame */
       /* FIXME: this is not correct for single-submenu case */
-      FSET (f, menu_bar_vector, menu_items);
+      fset_menu_bar_vector (f, menu_items);
       f->menu_bar_items_used = menu_items_used;
 
       /* Calls restore_menu_items, etc., as they were outside */
diff --git a/src/nsterm.m b/src/nsterm.m
index a628a248c77..12ca52684e6 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -1032,7 +1032,7 @@ ns_frame_rehighlight (struct frame *frame)
            : dpyinfo->x_focus_frame);
       if (!FRAME_LIVE_P (dpyinfo->x_highlight_frame))
         {
-          FSET (dpyinfo->x_focus_frame, focus_frame, Qnil);
+          fset_focus_frame (dpyinfo->x_focus_frame, Qnil);
           dpyinfo->x_highlight_frame = dpyinfo->x_focus_frame;
         }
     }
@@ -3698,7 +3698,7 @@ ns_set_vertical_scroll_bar (struct window *window,
         {
           bar = XNS_SCROLL_BAR (window->vertical_scroll_bar);
           [bar removeFromSuperview];
-          WSET (window, vertical_scroll_bar, Qnil);
+          wset_vertical_scroll_bar (window, Qnil);
         }
       ns_clear_frame_area (f, sb_left, top, width, height);
       UNBLOCK_INPUT;
@@ -3709,7 +3709,7 @@ ns_set_vertical_scroll_bar (struct window *window,
     {
       ns_clear_frame_area (f, sb_left, top, width, height);
       bar = [[EmacsScroller alloc] initFrame: r window: win];
-      WSET (window, vertical_scroll_bar, make_save_value (bar, 0));
+      wset_vertical_scroll_bar (window, make_save_value (bar, 0));
     }
   else
     {
@@ -4093,7 +4093,7 @@ ns_term_init (Lisp_Object display_name)
 
   terminal->kboard = xmalloc (sizeof *terminal->kboard);
   init_kboard (terminal->kboard);
-  KSET (terminal->kboard, Vwindow_system, Qns);
+  kset_window_system (terminal->kboard, Qns);
   terminal->kboard->next_kboard = all_kboards;
   all_kboards = terminal->kboard;
   /* Don't let the initial kboard remain current longer than necessary.
@@ -4600,11 +4600,15 @@ not_in_argv (NSString *arg)
 
   SELECT_TYPE readfds, writefds, *wfds;
   EMACS_TIME timeout, *tmo;
+  NSAutoreleasePool *pool = nil;
 
   /* NSTRACE (fd_handler); */
 
   for (;;) 
     {
+      [pool release];
+      pool = [[NSAutoreleasePool alloc] init];
+
       if (waiting)
         {
           SELECT_TYPE fds;
@@ -6388,7 +6392,7 @@ not_in_argv (NSString *arg)
 {
   NSTRACE (EmacsScroller_dealloc);
   if (!NILP (win))
-    WSET (XWINDOW (win), vertical_scroll_bar, Qnil);
+    wset_vertical_scroll_bar (XWINDOW (win), Qnil);
   [super dealloc];
 }
 
diff --git a/src/print.c b/src/print.c
index 23ad6c0a256..64449aeaf2a 100644
--- a/src/print.c
+++ b/src/print.c
@@ -494,14 +494,14 @@ temp_output_buffer_setup (const char *bufname)
 
   Fkill_all_local_variables ();
   delete_all_overlays (current_buffer);
-  BSET (current_buffer, directory, BVAR (old, directory));
-  BSET (current_buffer, read_only, Qnil);
-  BSET (current_buffer, filename, Qnil);
-  BSET (current_buffer, undo_list, Qt);
+  bset_directory (current_buffer, BVAR (old, directory));
+  bset_read_only (current_buffer, Qnil);
+  bset_filename (current_buffer, Qnil);
+  bset_undo_list (current_buffer, Qt);
   eassert (current_buffer->overlays_before == NULL);
   eassert (current_buffer->overlays_after == NULL);
-  BSET (current_buffer, enable_multibyte_characters,
-        BVAR (&buffer_defaults, enable_multibyte_characters));
+  bset_enable_multibyte_characters
+    (current_buffer, BVAR (&buffer_defaults, enable_multibyte_characters));
   specbind (Qinhibit_read_only, Qt);
   specbind (Qinhibit_modification_hooks, Qt);
   Ferase_buffer ();
@@ -586,6 +586,7 @@ A printed representation of an object is text which describes that object.  */)
   (Lisp_Object object, Lisp_Object noescape)
 {
   Lisp_Object printcharfun;
+  bool prev_abort_on_gc;
   /* struct gcpro gcpro1, gcpro2; */
   Lisp_Object save_deactivate_mark;
   ptrdiff_t count = SPECPDL_INDEX ();
@@ -601,7 +602,8 @@ A printed representation of an object is text which describes that object.  */)
        No need for specbind, since errors deactivate the mark.  */
     save_deactivate_mark = Vdeactivate_mark;
     /* GCPRO2 (object, save_deactivate_mark); */
-    abort_on_gc++;
+    prev_abort_on_gc = abort_on_gc;
+    abort_on_gc = 1;
 
     printcharfun = Vprin1_to_string_buffer;
     PRINTPREPARE;
@@ -625,7 +627,7 @@ A printed representation of an object is text which describes that object.  */)
   Vdeactivate_mark = save_deactivate_mark;
   /* UNGCPRO; */
 
-  abort_on_gc--;
+  abort_on_gc = prev_abort_on_gc;
   return unbind_to (count, object);
 }
 
@@ -1194,7 +1196,7 @@ print_preprocess (Lisp_Object obj)
         {
         case Lisp_String:
           /* A string may have text properties, which can be circular.  */
-          traverse_intervals_noorder (string_get_intervals (obj),
+          traverse_intervals_noorder (string_intervals (obj),
                                       print_preprocess_string, Qnil);
           break;
 
@@ -1297,7 +1299,7 @@ static Lisp_Object
 print_prune_string_charset (Lisp_Object string)
 {
   print_check_string_result = 0;
-  traverse_intervals (string_get_intervals (string), 0,
+  traverse_intervals (string_intervals (string), 0,
                       print_check_string_charset_prop, string);
   if (! (print_check_string_result & PRINT_STRING_UNSAFE_CHARSET_FOUND))
     {
@@ -1408,7 +1410,7 @@ print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag
           if (! EQ (Vprint_charset_text_property, Qt))
             obj = print_prune_string_charset (obj);
 
-          if (string_get_intervals (obj))
+          if (string_intervals (obj))
             {
               PRINTCHAR ('#');
               PRINTCHAR ('(');
@@ -1499,9 +1501,9 @@ print_object (Lisp_Object obj, register Lisp_Object printcharfun, int escapeflag
             }
           PRINTCHAR ('\"');
 
-          if (string_get_intervals (obj))
+          if (string_intervals (obj))
             {
-              traverse_intervals (string_get_intervals (obj),
+              traverse_intervals (string_intervals (obj),
                                   0, print_interval, printcharfun);
               PRINTCHAR (')');
             }
diff --git a/src/process.c b/src/process.c
index a43655e4da8..7f6f6bafbea 100644
--- a/src/process.c
+++ b/src/process.c
@@ -20,6 +20,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
 #include <config.h>
+
+#define PROCESS_INLINE EXTERN_INLINE
+
 #include <signal.h>
 #include <stdio.h>
 #include <errno.h>
@@ -334,6 +337,88 @@ static struct sockaddr_and_len {
 /* Maximum number of bytes to send to a pty without an eof.  */
 static int pty_max_bytes;
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+pset_buffer (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->buffer = val;
+}
+static inline void
+pset_command (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->command = val;
+}
+static inline void
+pset_decode_coding_system (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->decode_coding_system = val;
+}
+static inline void
+pset_decoding_buf (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->decoding_buf = val;
+}
+static inline void
+pset_encode_coding_system (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->encode_coding_system = val;
+}
+static inline void
+pset_encoding_buf (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->encoding_buf = val;
+}
+static inline void
+pset_filter (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->filter = val;
+}
+static inline void
+pset_log (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->log = val;
+}
+static inline void
+pset_mark (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->mark = val;
+}
+static inline void
+pset_name (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->name = val;
+}
+static inline void
+pset_plist (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->plist = val;
+}
+static inline void
+pset_sentinel (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->sentinel = val;
+}
+static inline void
+pset_status (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->status = val;
+}
+static inline void
+pset_tty_name (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->tty_name = val;
+}
+static inline void
+pset_type (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->type = val;
+}
+static inline void
+pset_write_queue (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->write_queue = val;
+}
+
 
 
 static struct fd_callback_data
@@ -428,7 +513,7 @@ static void
 update_status (struct Lisp_Process *p)
 {
   eassert (p->raw_status_new);
-  PSET (p, status, status_convert (p->raw_status));
+  pset_status (p, status_convert (p->raw_status));
   p->raw_status_new = 0;
 }
 
@@ -626,8 +711,8 @@ make_process (Lisp_Object name)
   p = allocate_process ();
   /* Initialize Lisp data.  Note that allocate_process initializes all
      Lisp data to nil, so do it only for slots which should not be nil.  */
-  PSET (p, status, Qrun);
-  PSET (p, mark, Fmake_marker ());
+  pset_status (p, Qrun);
+  pset_mark (p, Fmake_marker ());
 
   /* Initialize non-Lisp data.  Note that allocate_process zeroes out all
      non-Lisp data, so do it only for slots which should not be zero.  */
@@ -648,7 +733,7 @@ make_process (Lisp_Object name)
       name1 = concat2 (name, make_formatted_string (suffix, "<%"pMd">", i));
     }
   name = name1;
-  PSET (p, name, name);
+  pset_name (p, name);
   XSETPROCESS (val, p);
   Vprocess_alist = Fcons (Fcons (name, val), Vprocess_alist);
   return val;
@@ -745,7 +830,7 @@ nil, indicating the current buffer's process.  */)
   p->raw_status_new = 0;
   if (NETCONN1_P (p) || SERIALCONN1_P (p))
     {
-      PSET (p, status, Fcons (Qexit, Fcons (make_number (0), Qnil)));
+      pset_status (p, Fcons (Qexit, Fcons (make_number (0), Qnil)));
       p->tick = ++process_tick;
       status_notify (p);
       redisplay_preserve_echo_area (13);
@@ -774,7 +859,7 @@ nil, indicating the current buffer's process.  */)
         {
           Fkill_process (process, Qnil);
           /* Do this now, since remove_process will make sigchld_handler do nothing.  */
-          PSET (p, status, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)));
+          pset_status (p, Fcons (Qsignal, Fcons (make_number (SIGKILL), Qnil)));
           p->tick = ++process_tick;
           status_notify (p);
           redisplay_preserve_echo_area (13);
@@ -901,9 +986,9 @@ Return BUFFER.  */)
   if (!NILP (buffer))
     CHECK_BUFFER (buffer);
   p = XPROCESS (process);
-  PSET (p, buffer, buffer);
+  pset_buffer (p, buffer);
   if (NETCONN1_P (p) || SERIALCONN1_P (p))
-    PSET (p, childp, Fplist_put (p->childp, QCbuffer, buffer));
+    pset_childp (p, Fplist_put (p->childp, QCbuffer, buffer));
   setup_process_coding_systems (process);
   return buffer;
 }
@@ -974,9 +1059,9 @@ The string argument is normally a multibyte string, except:
         }
     }
 
-  PSET (p, filter, filter);
+  pset_filter (p, filter);
   if (NETCONN1_P (p) || SERIALCONN1_P (p))
-    PSET (p, childp, Fplist_put (p->childp, QCfilter, filter));
+    pset_childp (p, Fplist_put (p->childp, QCfilter, filter));
   setup_process_coding_systems (process);
   return filter;
 }
@@ -1003,9 +1088,9 @@ It gets two arguments: the process, and a string describing the change.  */)
   CHECK_PROCESS (process);
   p = XPROCESS (process);
 
-  PSET (p, sentinel, sentinel);
+  pset_sentinel (p, sentinel);
   if (NETCONN1_P (p) || SERIALCONN1_P (p))
-    PSET (p, childp, Fplist_put (p->childp, QCsentinel, sentinel));
+    pset_childp (p, Fplist_put (p->childp, QCsentinel, sentinel));
   return sentinel;
 }
 
@@ -1138,7 +1223,7 @@ DEFUN ("set-process-plist", Fset_process_plist, Sset_process_plist,
   CHECK_PROCESS (process);
   CHECK_LIST (plist);
 
-  PSET (XPROCESS (process), plist, plist);
+  pset_plist (XPROCESS (process), plist);
   return plist;
 }
 
@@ -1324,18 +1409,18 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
      itself; it's all taken care of here.  */
   record_unwind_protect (start_process_unwind, proc);
 
-  PSET (XPROCESS (proc), childp, Qt);
-  PSET (XPROCESS (proc), plist, Qnil);
-  PSET (XPROCESS (proc), type, Qreal);
-  PSET (XPROCESS (proc), buffer, buffer);
-  PSET (XPROCESS (proc), sentinel, Qnil);
-  PSET (XPROCESS (proc), filter, Qnil);
-  PSET (XPROCESS (proc), command, Flist (nargs - 2, args + 2));
+  pset_childp (XPROCESS (proc), Qt);
+  pset_plist (XPROCESS (proc), Qnil);
+  pset_type (XPROCESS (proc), Qreal);
+  pset_buffer (XPROCESS (proc), buffer);
+  pset_sentinel (XPROCESS (proc), Qnil);
+  pset_filter (XPROCESS (proc), Qnil);
+  pset_command (XPROCESS (proc), Flist (nargs - 2, args + 2));
 
 #ifdef HAVE_GNUTLS
   /* AKA GNUTLS_INITSTAGE(proc).  */
   XPROCESS (proc)->gnutls_initstage = GNUTLS_STAGE_EMPTY;
-  PSET (XPROCESS (proc), gnutls_cred_type, Qnil);
+  pset_gnutls_cred_type (XPROCESS (proc), Qnil);
 #endif
 
 #ifdef ADAPTIVE_READ_BUFFERING
@@ -1375,7 +1460,7 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
         else if (CONSP (Vdefault_process_coding_system))
           val = XCAR (Vdefault_process_coding_system);
       }
-    PSET (XPROCESS (proc), decode_coding_system, val);
+    pset_decode_coding_system (XPROCESS (proc), val);
 
     val = Vcoding_system_for_write;
     if (NILP (val))
@@ -1395,7 +1480,7 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
         else if (CONSP (Vdefault_process_coding_system))
           val = XCDR (Vdefault_process_coding_system);
       }
-    PSET (XPROCESS (proc), encode_coding_system, val);
+    pset_encode_coding_system (XPROCESS (proc), val);
     /* Note: At this moment, the above coding system may leave
        text-conversion or eol-conversion unspecified.  They will be
        decided after we read output from the process and decode it by
@@ -1404,9 +1489,9 @@ usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS)  */)
   }
 
 
-  PSET (XPROCESS (proc), decoding_buf, empty_unibyte_string);
+  pset_decoding_buf (XPROCESS (proc), empty_unibyte_string);
   XPROCESS (proc)->decoding_carryover = 0;
-  PSET (XPROCESS (proc), encoding_buf, empty_unibyte_string);
+  pset_encoding_buf (XPROCESS (proc), empty_unibyte_string);
 
   XPROCESS (proc)->inherit_coding_system_flag
     = !(NILP (buffer) || !inherit_process_coding_system);
@@ -1538,9 +1623,6 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
   /* Use volatile to protect variables from being clobbered by longjmp.  */
   volatile int forkin, forkout;
   volatile int pty_flag = 0;
-#ifndef USE_CRT_DLL
-  extern char **environ;
-#endif
 
   inchannel = outchannel = -1;
 
@@ -1628,7 +1710,7 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
      more portable (see USG_SUBTTY_WORKS above).  */
 
   XPROCESS (process)->pty_flag = pty_flag;
-  PSET (XPROCESS (process), status, Qrun);
+  pset_status (XPROCESS (process), Qrun);
 
   /* Delay interrupts until we have a chance to store
      the new fork's pid in its process structure */
@@ -1867,10 +1949,10 @@ create_process (Lisp_Object process, char **new_argv, Lisp_Object current_dir)
 
 #ifdef HAVE_PTYS
       if (pty_flag)
-        PSET (XPROCESS (process), tty_name, build_string (pty_name));
+        pset_tty_name (XPROCESS (process), build_string (pty_name));
       else
 #endif
-        PSET (XPROCESS (process), tty_name, Qnil);
+        pset_tty_name (XPROCESS (process), Qnil);
 
 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
       /* Wait for child_setup to complete in case that vfork is
@@ -1965,7 +2047,7 @@ create_pty (Lisp_Object process)
      more portable (see USG_SUBTTY_WORKS above).  */
 
   XPROCESS (process)->pty_flag = pty_flag;
-  PSET (XPROCESS (process), status, Qrun);
+  pset_status (XPROCESS (process), Qrun);
   setup_process_coding_systems (process);
 
   FD_SET (inchannel, &input_wait_mask);
@@ -1976,10 +2058,10 @@ create_pty (Lisp_Object process)
   XPROCESS (process)->pid = -2;
 #ifdef HAVE_PTYS
   if (pty_flag)
-    PSET (XPROCESS (process), tty_name, build_string (pty_name));
+    pset_tty_name (XPROCESS (process), build_string (pty_name));
   else
 #endif
-    PSET (XPROCESS (process), tty_name, Qnil);
+    pset_tty_name (XPROCESS (process), Qnil);
 }
 
 
@@ -2368,7 +2450,7 @@ OPTION is not a supported option, return nil instead; otherwise return t.  */)
 
   if (set_socket_option (s, option, value))
     {
-      PSET (p, childp, Fplist_put (p->childp, option, value));
+      pset_childp (p, Fplist_put (p->childp, option, value));
       return Qt;
     }
 
@@ -2601,18 +2683,18 @@ usage:  (make-serial-process &rest ARGS)  */)
   if (NILP (buffer))
     buffer = name;
   buffer = Fget_buffer_create (buffer);
-  PSET (p, buffer, buffer);
-
-  PSET (p, childp, contact);
-  PSET (p, plist, Fcopy_sequence (Fplist_get (contact, QCplist)));
-  PSET (p, type, Qserial);
-  PSET (p, sentinel, Fplist_get (contact, QCsentinel));
-  PSET (p, filter, Fplist_get (contact, QCfilter));
-  PSET (p, log, Qnil);
+  pset_buffer (p, buffer);
+
+  pset_childp (p, contact);
+  pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist)));
+  pset_type (p, Qserial);
+  pset_sentinel (p, Fplist_get (contact, QCsentinel));
+  pset_filter (p, Fplist_get (contact, QCfilter));
+  pset_log (p, Qnil);
   if (tem = Fplist_get (contact, QCnoquery), !NILP (tem))
     p->kill_without_query = 1;
   if (tem = Fplist_get (contact, QCstop), !NILP (tem))
-    PSET (p, command, Qt);
+    pset_command (p, Qt);
   p->pty_flag = 0;
 
   if (!EQ (p->command, Qt))
@@ -2644,7 +2726,7 @@ usage:  (make-serial-process &rest ARGS)  */)
   else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters)))
            || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters))))
     val = Qnil;
-  PSET (p, decode_coding_system, val);
+  pset_decode_coding_system (p, val);
 
   val = Qnil;
   if (!NILP (tem))
@@ -2658,12 +2740,12 @@ usage:  (make-serial-process &rest ARGS)  */)
   else if ((!NILP (buffer) && NILP (BVAR (XBUFFER (buffer), enable_multibyte_characters)))
            || (NILP (buffer) && NILP (BVAR (&buffer_defaults, enable_multibyte_characters))))
     val = Qnil;
-  PSET (p, encode_coding_system, val);
+  pset_encode_coding_system (p, val);
 
   setup_process_coding_systems (proc);
-  PSET (p, decoding_buf, empty_unibyte_string);
+  pset_decoding_buf (p, empty_unibyte_string);
   p->decoding_carryover = 0;
-  PSET (p, encoding_buf, empty_unibyte_string);
+  pset_encoding_buf (p, empty_unibyte_string);
   p->inherit_coding_system_flag
     = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system);
 
@@ -3400,23 +3482,23 @@ usage: (make-network-process &rest ARGS)  */)
 
   p = XPROCESS (proc);
 
-  PSET (p, childp, contact);
-  PSET (p, plist, Fcopy_sequence (Fplist_get (contact, QCplist)));
-  PSET (p, type, Qnetwork);
+  pset_childp (p, contact);
+  pset_plist (p, Fcopy_sequence (Fplist_get (contact, QCplist)));
+  pset_type (p, Qnetwork);
 
-  PSET (p, buffer, buffer);
-  PSET (p, sentinel, sentinel);
-  PSET (p, filter, filter);
-  PSET (p, log, Fplist_get (contact, QClog));
+  pset_buffer (p, buffer);
+  pset_sentinel (p, sentinel);
+  pset_filter (p, filter);
+  pset_log (p, Fplist_get (contact, QClog));
   if (tem = Fplist_get (contact, QCnoquery), !NILP (tem))
     p->kill_without_query = 1;
   if ((tem = Fplist_get (contact, QCstop), !NILP (tem)))
-    PSET (p, command, Qt);
+    pset_command (p, Qt);
   p->pid = 0;
   p->infd  = inch;
   p->outfd = outch;
   if (is_server && socktype != SOCK_DGRAM)
-    PSET (p, status, Qlisten);
+    pset_status (p, Qlisten);
 
   /* Make the process marker point into the process buffer (if any).  */
   if (BUFFERP (buffer))
@@ -3430,7 +3512,7 @@ usage: (make-network-process &rest ARGS)  */)
       /* We may get here if connect did succeed immediately.  However,
          in that case, we still need to signal this like a non-blocking
          connection.  */
-      PSET (p, status, Qconnect);
+      pset_status (p, Qconnect);
       if (!FD_ISSET (inch, &connect_wait_mask))
         {
           FD_SET (inch, &connect_wait_mask);
@@ -3497,7 +3579,7 @@ usage: (make-network-process &rest ARGS)  */)
         else
           val = Qnil;
       }
-    PSET (p, decode_coding_system, val);
+    pset_decode_coding_system (p, val);
 
     if (!NILP (tem))
       {
@@ -3531,13 +3613,13 @@ usage: (make-network-process &rest ARGS)  */)
         else
           val = Qnil;
       }
-    PSET (p, encode_coding_system, val);
+    pset_encode_coding_system (p, val);
   }
   setup_process_coding_systems (proc);
 
-  PSET (p, decoding_buf, empty_unibyte_string);
+  pset_decoding_buf (p, empty_unibyte_string);
   p->decoding_carryover = 0;
-  PSET (p, encoding_buf, empty_unibyte_string);
+  pset_encoding_buf (p, empty_unibyte_string);
 
   p->inherit_coding_system_flag
     = !(!NILP (tem) || NILP (buffer) || !inherit_process_coding_system);
@@ -4150,18 +4232,18 @@ server_accept_connection (Lisp_Object server, int channel)
                           conv_sockaddr_to_lisp (&saddr.sa, len));
 #endif
 
-  PSET (p, childp, contact);
-  PSET (p, plist, Fcopy_sequence (ps->plist));
-  PSET (p, type, Qnetwork);
+  pset_childp (p, contact);
+  pset_plist (p, Fcopy_sequence (ps->plist));
+  pset_type (p, Qnetwork);
 
-  PSET (p, buffer, buffer);
-  PSET (p, sentinel, ps->sentinel);
-  PSET (p, filter, ps->filter);
-  PSET (p, command, Qnil);
+  pset_buffer (p, buffer);
+  pset_sentinel (p, ps->sentinel);
+  pset_filter (p, ps->filter);
+  pset_command (p, Qnil);
   p->pid = 0;
   p->infd  = s;
   p->outfd = s;
-  PSET (p, status, Qrun);
+  pset_status (p, Qrun);
 
   /* Client processes for accepted connections are not stopped initially.  */
   if (!EQ (p->filter, Qt))
@@ -4178,13 +4260,13 @@ server_accept_connection (Lisp_Object server, int channel)
      of the new process should reflect the settings at the time the
      server socket was opened; not the current settings. */
 
-  PSET (p, decode_coding_system, ps->decode_coding_system);
-  PSET (p, encode_coding_system, ps->encode_coding_system);
+  pset_decode_coding_system (p, ps->decode_coding_system);
+  pset_encode_coding_system (p, ps->encode_coding_system);
   setup_process_coding_systems (proc);
 
-  PSET (p, decoding_buf, empty_unibyte_string);
+  pset_decoding_buf (p, empty_unibyte_string);
   p->decoding_carryover = 0;
-  PSET (p, encoding_buf, empty_unibyte_string);
+  pset_encoding_buf (p, empty_unibyte_string);
 
   p->inherit_coding_system_flag
     = (NILP (buffer) ? 0 : ps->inherit_coding_system_flag);
@@ -4889,7 +4971,7 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
                          waitpid() will not find the process object to
                          delete.  Do it here.  */
                       p->tick = ++process_tick;
-                      PSET (p, status, Qfailed);
+                      pset_status (p, Qfailed);
                     }
                   else
                     kill (getpid (), SIGCHLD);
@@ -4909,8 +4991,8 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
                   if (XPROCESS (proc)->raw_status_new)
                     update_status (XPROCESS (proc));
                   if (EQ (XPROCESS (proc)->status, Qrun))
-                    PSET (XPROCESS (proc), status,
-                          Fcons (Qexit, Fcons (make_number (256), Qnil)));
+                    pset_status (XPROCESS (proc),
+                                 list2 (Qexit, make_number (256)));
                 }
             }
 #ifdef NON_BLOCKING_CONNECT
@@ -4958,13 +5040,12 @@ wait_reading_process_output (intmax_t time_limit, int nsecs, int read_kbd,
               if (xerrno)
                 {
                   p->tick = ++process_tick;
-                  PSET (p, status,
-                        Fcons (Qfailed, Fcons (make_number (xerrno), Qnil)));
+                  pset_status (p, list2 (Qfailed, make_number (xerrno)));
                   deactivate_process (proc);
                 }
               else
                 {
-                  PSET (p, status, Qrun);
+                  pset_status (p, Qrun);
                   /* Execute the sentinel here.  If we had relied on
                      status_notify to do it later, it will read input
                      from the process before calling the sentinel.  */
@@ -5164,7 +5245,7 @@ read_process_output (Lisp_Object proc, register int channel)
       /* A new coding system might be found.  */
       if (!EQ (p->decode_coding_system, Vlast_coding_system_used))
         {
-          PSET (p, decode_coding_system, Vlast_coding_system_used);
+          pset_decode_coding_system (p, Vlast_coding_system_used);
 
           /* Don't call setup_coding_system for
              proc_decode_coding_system[channel] here.  It is done in
@@ -5180,8 +5261,8 @@ read_process_output (Lisp_Object proc, register int channel)
           if (NILP (p->encode_coding_system)
               && proc_encode_coding_system[p->outfd])
             {
-              PSET (p, encode_coding_system,
-                    coding_inherit_eol_type (Vlast_coding_system_used, Qnil));
+              pset_encode_coding_system
+                (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil));
               setup_coding_system (p->encode_coding_system,
                                    proc_encode_coding_system[p->outfd]);
             }
@@ -5190,7 +5271,7 @@ read_process_output (Lisp_Object proc, register int channel)
       if (coding->carryover_bytes > 0)
         {
           if (SCHARS (p->decoding_buf) < coding->carryover_bytes)
-            PSET (p, decoding_buf, make_uninit_string (coding->carryover_bytes));
+            pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes));
           memcpy (SDATA (p->decoding_buf), coding->carryover,
                   coding->carryover_bytes);
           p->decoding_carryover = coding->carryover_bytes;
@@ -5246,7 +5327,7 @@ read_process_output (Lisp_Object proc, register int channel)
       old_begv_byte = BEGV_BYTE;
       old_zv_byte = ZV_BYTE;
 
-      BSET (current_buffer, read_only, Qnil);
+      bset_read_only (current_buffer, Qnil);
 
       /* Insert new output into buffer
          at the current end-of-output marker,
@@ -5274,12 +5355,12 @@ read_process_output (Lisp_Object proc, register int channel)
          similar code in the previous `if' block.  */
       if (!EQ (p->decode_coding_system, Vlast_coding_system_used))
         {
-          PSET (p, decode_coding_system, Vlast_coding_system_used);
+          pset_decode_coding_system (p, Vlast_coding_system_used);
           if (NILP (p->encode_coding_system)
               && proc_encode_coding_system[p->outfd])
             {
-              PSET (p, encode_coding_system,
-                    coding_inherit_eol_type (Vlast_coding_system_used, Qnil));
+              pset_encode_coding_system
+                (p, coding_inherit_eol_type (Vlast_coding_system_used, Qnil));
               setup_coding_system (p->encode_coding_system,
                                    proc_encode_coding_system[p->outfd]);
             }
@@ -5287,7 +5368,7 @@ read_process_output (Lisp_Object proc, register int channel)
       if (coding->carryover_bytes > 0)
         {
           if (SCHARS (p->decoding_buf) < coding->carryover_bytes)
-            PSET (p, decoding_buf, make_uninit_string (coding->carryover_bytes));
+            pset_decoding_buf (p, make_uninit_string (coding->carryover_bytes));
           memcpy (SDATA (p->decoding_buf), coding->carryover,
                   coding->carryover_bytes);
           p->decoding_carryover = coding->carryover_bytes;
@@ -5337,7 +5418,7 @@ read_process_output (Lisp_Object proc, register int channel)
         Fnarrow_to_region (make_number (old_begv), make_number (old_zv));
 
 
-      BSET (current_buffer, read_only, old_read_only);
+      bset_read_only (current_buffer, old_read_only);
       SET_PT_BOTH (opoint, opoint_byte);
     }
   /* Handling the process output should not deactivate the mark.  */
@@ -5404,9 +5485,9 @@ write_queue_push (struct Lisp_Process *p, Lisp_Object input_obj,
   entry = Fcons (obj, Fcons (make_number (offset), make_number (len)));
 
   if (front)
-    PSET (p, write_queue, Fcons (entry, p->write_queue));
+    pset_write_queue (p, Fcons (entry, p->write_queue));
   else
-    PSET (p, write_queue, nconc2 (p->write_queue, Fcons (entry, Qnil)));
+    pset_write_queue (p, nconc2 (p->write_queue, Fcons (entry, Qnil)));
 }
 
 /* Remove the first element in the write_queue of process P, put its
@@ -5424,7 +5505,7 @@ write_queue_pop (struct Lisp_Process *p, Lisp_Object *obj,
     return 0;
 
   entry = XCAR (p->write_queue);
-  PSET (p, write_queue, XCDR (p->write_queue));
+  pset_write_queue (p, XCDR (p->write_queue));
 
   *obj = XCAR (entry);
   offset_length = XCDR (entry);
@@ -5471,8 +5552,8 @@ send_process (volatile Lisp_Object proc, const char *volatile buf,
           && !NILP (BVAR (XBUFFER (object), enable_multibyte_characters)))
       || EQ (object, Qt))
     {
-      PSET (p, encode_coding_system,
-            complement_process_encoding_system (p->encode_coding_system));
+      pset_encode_coding_system
+        (p, complement_process_encoding_system (p->encode_coding_system));
       if (!EQ (Vlast_coding_system_used, p->encode_coding_system))
         {
           /* The coding system for encoding was changed to raw-text
@@ -5693,7 +5774,7 @@ send_process (volatile Lisp_Object proc, const char *volatile buf,
       proc = process_sent_to;
       p = XPROCESS (proc);
       p->raw_status_new = 0;
-      PSET (p, status, Fcons (Qexit, Fcons (make_number (256), Qnil)));
+      pset_status (p, Fcons (Qexit, Fcons (make_number (256), Qnil)));
       p->tick = ++process_tick;
       deactivate_process (proc);
       error ("SIGPIPE raised on process %s; closed it", SDATA (p->name));
@@ -5922,7 +6003,7 @@ process_send_signal (Lisp_Object process, int signo, Lisp_Object current_group,
 #ifdef SIGCONT
     case SIGCONT:
       p->raw_status_new = 0;
-      PSET (p, status, Qrun);
+      pset_status (p, Qrun);
       p->tick = ++process_tick;
       if (!nomsg)
         {
@@ -6018,7 +6099,7 @@ traffic.  */)
           FD_CLR (p->infd, &input_wait_mask);
           FD_CLR (p->infd, &non_keyboard_wait_mask);
         }
-      PSET (p, command, Qt);
+      pset_command (p, Qt);
       return process;
     }
 #ifndef SIGTSTP
@@ -6054,7 +6135,7 @@ traffic.  */)
           tcflush (p->infd, TCIFLUSH);
 #endif /* not WINDOWSNT */
         }
-      PSET (p, command, Qnil);
+      pset_command (p, Qnil);
       return process;
     }
 #ifdef SIGCONT
@@ -6470,7 +6551,7 @@ sigchld_handler (int signo)
 static Lisp_Object
 exec_sentinel_unwind (Lisp_Object data)
 {
-  PSET (XPROCESS (XCAR (data)), sentinel, XCDR (data));
+  pset_sentinel (XPROCESS (XCAR (data)), XCDR (data));
   return Qnil;
 }
 
@@ -6516,7 +6597,7 @@ exec_sentinel (Lisp_Object proc, Lisp_Object reason)
 
   /* Zilch the sentinel while it's running, to avoid recursive invocations;
      assure that it gets restored no matter how the sentinel exits.  */
-  PSET (p, sentinel, Qnil);
+  pset_sentinel (p, Qnil);
   record_unwind_protect (exec_sentinel_unwind, Fcons (proc, sentinel));
   /* Inhibit quit so that random quits don't screw up a running filter.  */
   specbind (Qinhibit_quit, Qt);
@@ -6671,13 +6752,13 @@ status_notify (struct Lisp_Process *deleting_process)
               before_byte = PT_BYTE;
 
               tem = BVAR (current_buffer, read_only);
-              BSET (current_buffer, read_only, Qnil);
+              bset_read_only (current_buffer, Qnil);
               insert_string ("\nProcess ");
               { /* FIXME: temporary kludge */
                 Lisp_Object tem2 = p->name; Finsert (1, &tem2); }
               insert_string (" ");
               Finsert (1, &msg);
-              BSET (current_buffer, read_only, tem);
+              bset_read_only (current_buffer, tem);
               set_marker_both (p->mark, p->buffer, PT, PT_BYTE);
 
               if (opoint >= before)
@@ -6714,8 +6795,8 @@ encode subprocess input.  */)
   Fcheck_coding_system (decoding);
   Fcheck_coding_system (encoding);
   encoding = coding_inherit_eol_type (encoding, Qnil);
-  PSET (p, decode_coding_system, decoding);
-  PSET (p, encode_coding_system, encoding);
+  pset_decode_coding_system (p, decoding);
+  pset_encode_coding_system (p, encoding);
   setup_process_coding_systems (process);
 
   return Qnil;
@@ -6745,8 +6826,8 @@ suppressed.  */)
   CHECK_PROCESS (process);
   p = XPROCESS (process);
   if (NILP (flag))
-    PSET (p, decode_coding_system,
-          raw_text_coding_system (p->decode_coding_system));
+    pset_decode_coding_system
+      (p, raw_text_coding_system (p->decode_coding_system));
   setup_process_coding_systems (process);
 
   return Qnil;
diff --git a/src/process.h b/src/process.h
index 43cc7ea33c0..55a572117c6 100644
--- a/src/process.h
+++ b/src/process.h
@@ -26,10 +26,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "gnutls.h"
 #endif
 
-/* Most code should use these macros to set
-   Lisp fields in struct Lisp_Process.  */
-
-#define PSET(p, field, value) ((p)->field = (value))
+INLINE_HEADER_BEGIN
+#ifndef PROCESS_INLINE
+# define PROCESS_INLINE INLINE
+#endif
 
 /* This structure records information about a subprocess
    or network connection.  */
@@ -165,6 +165,23 @@ struct Lisp_Process
 
 #define ChannelMask(n) (1 << (n))
 
+/* Most code should use these functions to set Lisp fields in struct
+   process.  */
+
+PROCESS_INLINE void
+pset_childp (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->childp = val;
+}
+
+#ifdef HAVE_GNUTLS
+PROCESS_INLINE void
+pset_gnutls_cred_type (struct Lisp_Process *p, Lisp_Object val)
+{
+  p->gnutls_cred_type = val;
+}
+#endif
+
 /* True if we are about to fork off a synchronous process or if we
    are waiting for it.  */
 extern int synch_process_alive;
@@ -208,3 +225,5 @@ extern void add_read_fd (int fd, fd_callback func, void *data);
 extern void delete_read_fd (int fd);
 extern void add_write_fd (int fd, fd_callback func, void *data);
 extern void delete_write_fd (int fd);
+
+INLINE_HEADER_END
diff --git a/src/search.c b/src/search.c
index 4bf4d11c33a..0b4f635066c 100644
--- a/src/search.c
+++ b/src/search.c
@@ -278,7 +278,7 @@ looking_at_1 (Lisp_Object string, int posix)
     save_search_regs ();
 
   /* This is so set_image_of_range_1 in regex.c can find the EQV table.  */
-  char_table_set_extras (BVAR (current_buffer, case_canon_table), 2,
+  set_char_table_extras (BVAR (current_buffer, case_canon_table), 2,
                          BVAR (current_buffer, case_eqv_table));
 
   CHECK_STRING (string);
@@ -393,7 +393,7 @@ string_match_1 (Lisp_Object regexp, Lisp_Object string, Lisp_Object start, int p
     }
 
   /* This is so set_image_of_range_1 in regex.c can find the EQV table.  */
-  char_table_set_extras (BVAR (current_buffer, case_canon_table), 2,
+  set_char_table_extras (BVAR (current_buffer, case_canon_table), 2,
                          BVAR (current_buffer, case_eqv_table));
 
   bufp = compile_pattern (regexp,
@@ -990,7 +990,7 @@ search_command (Lisp_Object string, Lisp_Object bound, Lisp_Object noerror,
     }
 
   /* This is so set_image_of_range_1 in regex.c can find the EQV table.  */
-  char_table_set_extras (BVAR (current_buffer, case_canon_table), 2,
+  set_char_table_extras (BVAR (current_buffer, case_canon_table), 2,
                          BVAR (current_buffer, case_eqv_table));
 
   np = search_buffer (string, PT, PT_BYTE, lim, lim_byte, n, RE,
diff --git a/src/syntax.c b/src/syntax.c
index 69965d1d824..f995b8f2cac 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -149,6 +149,13 @@ static void scan_sexps_forward (struct lisp_parse_state *,
                                 ptrdiff_t, ptrdiff_t, ptrdiff_t, EMACS_INT,
                                 int, Lisp_Object, int);
 static int in_classes (int, Lisp_Object);
+
+/* This setter is used only in this file, so it can be private.  */
+static inline void
+bset_syntax_table (struct buffer *b, Lisp_Object val)
+{
+  b->INTERNAL_FIELD (syntax_table) = val;
+}
 
 /* Whether the syntax of the character C has the prefix flag set.  */
 int syntax_prefix_flag_p (int c)
@@ -818,7 +825,7 @@ It is a copy of the TABLE, which defaults to the standard syntax table.  */)
 
   /* Only the standard syntax table should have a default element.
      Other syntax tables should inherit from parents instead.  */
-  CSET (XCHAR_TABLE (copy), defalt, Qnil);
+  set_char_table_defalt (copy, Qnil);
 
   /* Copied syntax tables should all have parents.
      If we copied one with no parent, such as the standard syntax table,
@@ -835,7 +842,7 @@ One argument, a syntax table.  */)
 {
   int idx;
   check_syntax_table (table);
-  BSET (current_buffer, syntax_table, table);
+  bset_syntax_table (current_buffer, table);
   /* Indicate that this buffer now has a specified syntax table.  */
   idx = PER_BUFFER_VAR_IDX (syntax_table);
   SET_PER_BUFFER_VALUE_P (current_buffer, idx, 1);
diff --git a/src/sysdep.c b/src/sysdep.c
index 1dbe8938e46..183ee005227 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -2307,8 +2307,7 @@ serial_configure (struct Lisp_Process *p,
     error ("tcsetattr() failed: %s", emacs_strerror (errno));
 
   childp2 = Fplist_put (childp2, QCsummary, build_string (summary));
-  PSET (p, childp, childp2);
-
+  pset_childp (p, childp2);
 }
 #endif /* not DOS_NT  */
 
diff --git a/src/term.c b/src/term.c
index c5cec3062e3..23e074287c1 100644
--- a/src/term.c
+++ b/src/term.c
@@ -1332,7 +1332,7 @@ term_get_fkeys_1 (void)
 
   /* This can happen if CANNOT_DUMP or with strange options.  */
   if (!KEYMAPP (KVAR (kboard, Vinput_decode_map)))
-    KSET (kboard, Vinput_decode_map, Fmake_sparse_keymap (Qnil));
+    kset_input_decode_map (kboard, Fmake_sparse_keymap (Qnil));
 
   for (i = 0; i < (sizeof (keys)/sizeof (keys[0])); i++)
     {
@@ -3280,7 +3280,7 @@ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
 
   terminal->kboard = xmalloc (sizeof *terminal->kboard);
   init_kboard (terminal->kboard);
-  KSET (terminal->kboard, Vwindow_system, Qnil);
+  kset_window_system (terminal->kboard, Qnil);
   terminal->kboard->next_kboard = all_kboards;
   all_kboards = terminal->kboard;
   terminal->kboard->reference_count++;
diff --git a/src/termhooks.h b/src/termhooks.h
index 78d8532e03f..46962a1217d 100644
--- a/src/termhooks.h
+++ b/src/termhooks.h
@@ -22,6 +22,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "systime.h" /* for Time */
 
+INLINE_HEADER_BEGIN
+#ifndef TERMHOOKS_INLINE
+# define TERMHOOKS_INLINE INLINE
+#endif
+
 struct glyph;
 struct frame;
 
@@ -321,10 +326,6 @@ struct ns_display_info;
 struct x_display_info;
 struct w32_display_info;
 
-/* Most code should use this macro to set Lisp field in struct terminal.  */
-
-#define TSET(f, field, value) ((f)->field = (value))
-
 /* Terminal-local parameters. */
 struct terminal
 {
@@ -631,6 +632,18 @@ struct terminal
   void (*delete_terminal_hook) (struct terminal *);
 };
 
+/* Most code should use these functions to set Lisp fields in struct
+   terminal.  */
+TERMHOOKS_INLINE void
+tset_charset_list (struct terminal *t, Lisp_Object val)
+{
+  t->charset_list = val;
+}
+TERMHOOKS_INLINE void
+tset_selection_alist (struct terminal *t, Lisp_Object val)
+{
+  t->Vselection_alist = val;
+}
 
 /* Chain of all terminal devices currently in use. */
 extern struct terminal *terminal_list;
@@ -669,3 +682,5 @@ extern unsigned char *encode_terminal_code (struct glyph *, int,
 #ifdef HAVE_GPM
 extern void close_gpm (int gpm_fd);
 #endif
+
+INLINE_HEADER_END
diff --git a/src/terminal.c b/src/terminal.c
index 53610d9736f..d94164a4e40 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -17,6 +17,9 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
+
+#define TERMHOOKS_INLINE EXTERN_INLINE
+
 #include <stdio.h>
 #include <setjmp.h>
 
@@ -39,6 +42,13 @@ struct terminal *initial_terminal;
 
 static void delete_initial_terminal (struct terminal *);
 
+/* This setter is used only in this file, so it can be private.  */
+static inline void
+tset_param_alist (struct terminal *t, Lisp_Object val)
+{
+  t->param_alist = val;
+}
+
 
 
 void
@@ -446,7 +456,7 @@ store_terminal_param (struct terminal *t, Lisp_Object parameter, Lisp_Object val
   Lisp_Object old_alist_elt = Fassq (parameter, t->param_alist);
   if (EQ (old_alist_elt, Qnil))
     {
-      TSET (t, param_alist, Fcons (Fcons (parameter, value), t->param_alist));
+      tset_param_alist (t, Fcons (Fcons (parameter, value), t->param_alist));
       return Qnil;
     }
   else
diff --git a/src/textprop.c b/src/textprop.c
index ac1980fde78..20d98b0e6f3 100644
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -143,7 +143,7 @@ validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *en
       if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end)
             && XINT (*end) <= BUF_ZV (b)))
         args_out_of_range (*begin, *end);
-      i = buffer_get_intervals (b);
+      i = buffer_intervals (b);
 
       /* If there's no text, there are no properties.  */
       if (BUF_BEGV (b) == BUF_ZV (b))
@@ -161,7 +161,7 @@ validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *en
       XSETFASTINT (*begin, XFASTINT (*begin));
       if (begin != end)
         XSETFASTINT (*end, XFASTINT (*end));
-      i = string_get_intervals (object);
+      i = string_intervals (object);
 
       if (len == 0)
         return NULL;
@@ -338,7 +338,7 @@ set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object)
     }
 
   /* Store new properties.  */
-  interval_set_plist (interval, Fcopy_sequence (properties));
+  set_interval_plist (interval, Fcopy_sequence (properties));
 }
 
 /* Add the properties of PLIST to the interval I, or set
@@ -411,7 +411,7 @@ add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object)
               record_property_change (i->position, LENGTH (i),
                                       sym1, Qnil, object);
             }
-          interval_set_plist (i, Fcons (sym1, Fcons (val1, i->plist)));
+          set_interval_plist (i, Fcons (sym1, Fcons (val1, i->plist)));
           changed++;
         }
     }
@@ -484,7 +484,7 @@ remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object
     }
 
   if (changed)
-    interval_set_plist (i, current_plist);
+    set_interval_plist (i, current_plist);
   return changed;
 }
 
@@ -510,13 +510,13 @@ interval_of (ptrdiff_t position, Lisp_Object object)
 
       beg = BUF_BEGV (b);
       end = BUF_ZV (b);
-      i = buffer_get_intervals (b);
+      i = buffer_intervals (b);
     }
   else
     {
       beg = 0;
       end = SCHARS (object);
-      i = string_get_intervals (object);
+      i = string_intervals (object);
     }
 
   if (!(beg <= position && position <= end))
@@ -1274,10 +1274,10 @@ set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties,
       && XFASTINT (start) == 0
       && XFASTINT (end) == SCHARS (object))
     {
-      if (!string_get_intervals (object))
+      if (!string_intervals (object))
         return Qnil;
 
-      string_set_intervals (object, NULL);
+      set_string_intervals (object, NULL);
       return Qt;
     }
 
@@ -1339,7 +1339,7 @@ set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object propertie
     return;
 
   if (i == NULL)
-    i = find_interval (buffer_get_intervals (XBUFFER (buffer)), s);
+    i = find_interval (buffer_intervals (XBUFFER (buffer)), s);
 
   if (i->position != s)
     {
@@ -1993,10 +1993,10 @@ void
 verify_interval_modification (struct buffer *buf,
                               ptrdiff_t start, ptrdiff_t end)
 {
-  register INTERVAL intervals = buffer_get_intervals (buf);
-  register INTERVAL i;
+  INTERVAL intervals = buffer_intervals (buf);
+  INTERVAL i;
   Lisp_Object hooks;
-  register Lisp_Object prev_mod_hooks;
+  Lisp_Object prev_mod_hooks;
   Lisp_Object mod_hooks;
   struct gcpro gcpro1;
 
diff --git a/src/undo.c b/src/undo.c
index cfb67ba5bc8..777e3291806 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -104,9 +104,9 @@ record_point (ptrdiff_t pt)
   if (at_boundary
       && current_buffer == last_boundary_buffer
       && last_boundary_position != pt)
-    BSET (current_buffer, undo_list,
-          Fcons (make_number (last_boundary_position),
-                 BVAR (current_buffer, undo_list)));
+    bset_undo_list (current_buffer,
+                    Fcons (make_number (last_boundary_position),
+                           BVAR (current_buffer, undo_list)));
 }
 
 /* Record an insertion that just happened or is about to happen,
@@ -142,8 +142,8 @@ record_insert (ptrdiff_t beg, ptrdiff_t length)
 
   XSETFASTINT (lbeg, beg);
   XSETINT (lend, beg + length);
-  BSET (current_buffer, undo_list,
-        Fcons (Fcons (lbeg, lend), BVAR (current_buffer, undo_list)));
+  bset_undo_list (current_buffer,
+                  Fcons (Fcons (lbeg, lend), BVAR (current_buffer, undo_list)));
 }
 
 /* Record that a deletion is about to take place,
@@ -168,8 +168,9 @@ record_delete (ptrdiff_t beg, Lisp_Object string)
       record_point (beg);
     }
 
-  BSET (current_buffer, undo_list,
-       Fcons (Fcons (string, sbeg), BVAR (current_buffer, undo_list)));
+  bset_undo_list
+    (current_buffer,
+     Fcons (Fcons (string, sbeg), BVAR (current_buffer, undo_list)));
 }
 
 /* Record the fact that MARKER is about to be adjusted by ADJUSTMENT.
@@ -191,9 +192,10 @@ record_marker_adjustment (Lisp_Object marker, ptrdiff_t adjustment)
     Fundo_boundary ();
   last_undo_buffer = current_buffer;
 
-  BSET (current_buffer, undo_list,
-        Fcons (Fcons (marker, make_number (adjustment)),
-               BVAR (current_buffer, undo_list)));
+  bset_undo_list
+    (current_buffer,
+     Fcons (Fcons (marker, make_number (adjustment)),
+            BVAR (current_buffer, undo_list)));
 }
 
 /* Record that a replacement is about to take place,
@@ -226,9 +228,10 @@ record_first_change (void)
   if (base_buffer->base_buffer)
     base_buffer = base_buffer->base_buffer;
 
-  BSET (current_buffer, undo_list,
-        Fcons (Fcons (Qt, make_lisp_time (base_buffer->modtime)),
-               BVAR (current_buffer, undo_list)));
+  bset_undo_list
+    (current_buffer,
+     Fcons (Fcons (Qt, make_lisp_time (base_buffer->modtime)),
+            BVAR (current_buffer, undo_list)));
 }
 
 /* Record a change in property PROP (whose old value was VAL)
@@ -266,8 +269,8 @@ record_property_change (ptrdiff_t beg, ptrdiff_t length,
   XSETINT (lbeg, beg);
   XSETINT (lend, beg + length);
   entry = Fcons (Qnil, Fcons (prop, Fcons (value, Fcons (lbeg, lend))));
-  BSET (current_buffer, undo_list,
-        Fcons (entry, BVAR (current_buffer, undo_list)));
+  bset_undo_list (current_buffer,
+                  Fcons (entry, BVAR (current_buffer, undo_list)));
 
   current_buffer = obuf;
 }
@@ -290,11 +293,12 @@ but another undo command will undo to the previous boundary.  */)
           /* If we have preallocated the cons cell to use here,
              use that one.  */
           XSETCDR (pending_boundary, BVAR (current_buffer, undo_list));
-          BSET (current_buffer, undo_list, pending_boundary);
+          bset_undo_list (current_buffer, pending_boundary);
           pending_boundary = Qnil;
         }
       else
-        BSET (current_buffer, undo_list, Fcons (Qnil, BVAR (current_buffer, undo_list)));
+        bset_undo_list (current_buffer,
+                        Fcons (Qnil, BVAR (current_buffer, undo_list)));
     }
   last_boundary_position = PT;
   last_boundary_buffer = current_buffer;
@@ -435,7 +439,7 @@ truncate_undo_list (struct buffer *b)
     XSETCDR (last_boundary, Qnil);
   /* There's nothing we decided to keep, so clear it out.  */
   else
-    BSET (b, undo_list, Qnil);
+    bset_undo_list (b, Qnil);
 
   unbind_to (count, Qnil);
 }
@@ -650,8 +654,9 @@ Return what remains of the list.  */)
      will work right.  */
   if (did_apply
       && EQ (oldlist, BVAR (current_buffer, undo_list)))
-    BSET (current_buffer, undo_list,
-          Fcons (list3 (Qapply, Qcdr, Qnil), BVAR (current_buffer, undo_list)));
+    bset_undo_list
+      (current_buffer,
+       Fcons (list3 (Qapply, Qcdr, Qnil), BVAR (current_buffer, undo_list)));
 
   UNGCPRO;
   return unbind_to (count, list);
diff --git a/src/unexaix.c b/src/unexaix.c
index 29fa0fd6287..c09156296f7 100644
--- a/src/unexaix.c
+++ b/src/unexaix.c
@@ -56,8 +56,9 @@ what you give them.   Help stamp out software-hoarding!  */
 #include <unistd.h>
 #include <fcntl.h>
 
+#include "mem-limits.h"
+
 char *start_of_text (void);                     /* Start of text */
-extern char *start_of_data (void);              /* Start of initialized data */
 
 extern int _data;
 extern int _text;
diff --git a/src/unexcoff.c b/src/unexcoff.c
index 5b269737839..e83042a379d 100644
--- a/src/unexcoff.c
+++ b/src/unexcoff.c
@@ -98,7 +98,7 @@ struct aouthdr
 
 #include <sys/file.h>
 
-extern char *start_of_data (void);              /* Start of initialized data */
+#include "mem-limits.h"
 
 static long block_copy_start;           /* Old executable start point */
 static struct filehdr f_hdr;            /* File header */
diff --git a/src/vm-limit.c b/src/vm-limit.c
index c313a900f2c..cf697b56fdf 100644
--- a/src/vm-limit.c
+++ b/src/vm-limit.c
@@ -18,6 +18,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 #include <setjmp.h>
+#include <unistd.h> /* for 'environ', on AIX */
 #include "lisp.h"
 #include "mem-limits.h"
 
@@ -268,7 +269,6 @@ start_of_data (void)
    * is known to live at or near the start of the system crt0.c, and
    * we don't sweat the handful of bytes that might lose.
    */
-  extern char **environ;
   return ((POINTER) &environ);
 #else
   extern int data_start;
diff --git a/src/w32.c b/src/w32.c
index 61de234cf70..b460660cb8c 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -7023,7 +7023,7 @@ serial_configure (struct Lisp_Process *p, Lisp_Object contact)
     error ("SetCommState() failed");
 
   childp2 = Fplist_put (childp2, QCsummary, build_string (summary));
-  PSET (p, childp, childp2);
+  pset_childp (p, childp2);
 }
 
 #ifdef HAVE_GNUTLS
diff --git a/src/w32fns.c b/src/w32fns.c
index 7779f032104..9c5231f9d93 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -1490,7 +1490,7 @@ x_set_icon_name (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   else if (!NILP (arg) || NILP (oldval))
     return;
 
-  FSET (f, icon_name, arg);
+  fset_icon_name (f, arg);
 
 #if 0
   if (f->output_data.w32->icon_bitmap != 0)
@@ -1686,7 +1686,7 @@ x_set_name (struct frame *f, Lisp_Object name, int explicit)
   if (! NILP (Fstring_equal (name, f->name)))
     return;
 
-  FSET (f, name, name);
+  fset_name (f, name);
 
   /* For setting the frame title, the title parameter should override
      the name parameter.  */
@@ -1734,7 +1734,7 @@ x_set_title (struct frame *f, Lisp_Object name, Lisp_Object old_name)
 
   update_mode_lines = 1;
 
-  FSET (f, title, name);
+  fset_title (f, name);
 
   if (NILP (name))
     name = f->name;
@@ -3925,7 +3925,7 @@ w32_window (struct frame *f, long window_prompting, int minibuffer_only)
 
     f->explicit_name = 0;
     name = f->name;
-    FSET (f, name, Qnil);
+    fset_name (f, Qnil);
     x_set_name (f, name, explicit);
   }
 
@@ -4174,11 +4174,11 @@ This function is an internal primitive--use `make-frame' instead.  */)
   f->output_data.w32 = xzalloc (sizeof (struct w32_output));
   FRAME_FONTSET (f) = -1;
 
-  FSET (f, icon_name,
-        x_get_arg (dpyinfo, parameters, Qicon_name, "iconName", "Title",
+  fset_icon_name
+    (f, x_get_arg (dpyinfo, parameters, Qicon_name, "iconName", "Title",
                    RES_TYPE_STRING));
   if (! STRINGP (f->icon_name))
-    FSET (f, icon_name, Qnil);
+    fset_icon_name (f, Qnil);
 
 /*  FRAME_W32_DISPLAY_INFO (f) = dpyinfo; */
 
@@ -4207,12 +4207,12 @@ This function is an internal primitive--use `make-frame' instead.  */)
      be set.  */
   if (EQ (name, Qunbound) || NILP (name))
     {
-      FSET (f, name, build_string (dpyinfo->w32_id_name));
+      fset_name (f, build_string (dpyinfo->w32_id_name));
       f->explicit_name = 0;
     }
   else
     {
-      FSET (f, name, name);
+      fset_name (f, name);
       f->explicit_name = 1;
       /* use the frame's title when getting resources for this frame.  */
       specbind (Qx_resource_name, name);
@@ -4381,13 +4381,13 @@ This function is an internal primitive--use `make-frame' instead.  */)
   if (FRAME_HAS_MINIBUF_P (f)
       && (!FRAMEP (KVAR (kb, Vdefault_minibuffer_frame))
           || !FRAME_LIVE_P (XFRAME (KVAR (kb, Vdefault_minibuffer_frame)))))
-    KSET (kb, Vdefault_minibuffer_frame, frame);
+    kset_default_minibuffer_frame (kb, frame);
 
   /* All remaining specified parameters, which have not been "used"
      by x_get_arg and friends, now go in the misc. alist of the frame.  */
   for (tem = parameters; CONSP (tem); tem = XCDR (tem))
     if (CONSP (XCAR (tem)) && !NILP (XCAR (XCAR (tem))))
-      FSET (f, param_alist, Fcons (XCAR (tem), f->param_alist));
+      fset_param_alist (f, Fcons (XCAR (tem), f->param_alist));
 
   UNGCPRO;
 
@@ -5242,7 +5242,7 @@ x_create_tip_frame (struct w32_display_info *dpyinfo,
   set_window_buffer (FRAME_ROOT_WINDOW (f), buffer, 0, 0);
   old_buffer = current_buffer;
   set_buffer_internal_1 (XBUFFER (buffer));
-  BSET (current_buffer, truncate_lines, Qnil);
+  bset_truncate_lines (current_buffer, Qnil);
   specbind (Qinhibit_read_only, Qt);
   specbind (Qinhibit_modification_hooks, Qt);
   Ferase_buffer ();
@@ -5261,7 +5261,7 @@ x_create_tip_frame (struct w32_display_info *dpyinfo,
   f->output_data.w32 = xzalloc (sizeof (struct w32_output));
 
   FRAME_FONTSET (f)  = -1;
-  FSET (f, icon_name, Qnil);
+  fset_icon_name (f, Qnil);
 
 #ifdef GLYPH_DEBUG
   image_cache_refcount =
@@ -5276,12 +5276,12 @@ x_create_tip_frame (struct w32_display_info *dpyinfo,
      be set.  */
   if (EQ (name, Qunbound) || NILP (name))
     {
-      FSET (f, name, build_string (dpyinfo->w32_id_name));
+      fset_name (f, build_string (dpyinfo->w32_id_name));
       f->explicit_name = 0;
     }
   else
     {
-      FSET (f, name, name);
+      fset_name (f, name);
       f->explicit_name = 1;
       /* use the frame's title when getting resources for this frame.  */
       specbind (Qx_resource_name, name);
@@ -5647,8 +5647,8 @@ Text larger than the specified size is clipped.  */)
 
   /* Set up the frame's root window.  */
   w = XWINDOW (FRAME_ROOT_WINDOW (f));
-  WSET (w, left_col, make_number (0));
-  WSET (w, top_line, make_number (0));
+  wset_left_col (w, make_number (0));
+  wset_top_line (w, make_number (0));
 
   if (CONSP (Vx_max_tooltip_size)
       && INTEGERP (XCAR (Vx_max_tooltip_size))
@@ -5656,13 +5656,13 @@ Text larger than the specified size is clipped.  */)
       && INTEGERP (XCDR (Vx_max_tooltip_size))
       && XINT (XCDR (Vx_max_tooltip_size)) > 0)
     {
-      WSET (w, total_cols, XCAR (Vx_max_tooltip_size));
-      WSET (w, total_lines, XCDR (Vx_max_tooltip_size));
+      wset_total_cols (w, XCAR (Vx_max_tooltip_size));
+      wset_total_lines (w, XCDR (Vx_max_tooltip_size));
     }
   else
     {
-      WSET (w, total_cols, make_number (80));
-      WSET (w, total_lines, make_number (40));
+      wset_total_cols (w, make_number (80));
+      wset_total_lines (w, make_number (40));
     }
 
   FRAME_TOTAL_COLS (f) = XINT (w->total_cols);
@@ -5672,7 +5672,7 @@ Text larger than the specified size is clipped.  */)
   /* Display the tooltip text in a temporary buffer.  */
   old_buffer = current_buffer;
   set_buffer_internal_1 (XBUFFER (XWINDOW (FRAME_ROOT_WINDOW (f))->buffer));
-  BSET (current_buffer, truncate_lines, Qnil);
+  bset_truncate_lines (current_buffer, Qnil);
   clear_glyph_matrix (w->desired_matrix);
   clear_glyph_matrix (w->current_matrix);
   SET_TEXT_POS (pos, BEGV, BEGV_BYTE);
@@ -5733,7 +5733,7 @@ Text larger than the specified size is clipped.  */)
       /* w->total_cols and FRAME_TOTAL_COLS want the width in columns,
          not in pixels.  */
       width /= WINDOW_FRAME_COLUMN_WIDTH (w);
-      WSET (w, total_cols, make_number (width));
+      wset_total_cols (w, make_number (width));
       FRAME_TOTAL_COLS (f) = width;
       adjust_glyphs (f);
       w->pseudo_window_p = 1;
diff --git a/src/w32menu.c b/src/w32menu.c
index 02302c2d594..3aa4c8bc96d 100644
--- a/src/w32menu.c
+++ b/src/w32menu.c
@@ -413,7 +413,7 @@ set_frame_menubar (FRAME_PTR f, int first_time, int deep_p)
       /* Run the hooks.  */
       safe_run_hooks (Qactivate_menubar_hook);
       safe_run_hooks (Qmenu_bar_update_hook);
-      FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+      fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
 
       items = FRAME_MENU_BAR_ITEMS (f);
 
@@ -500,7 +500,7 @@ set_frame_menubar (FRAME_PTR f, int first_time, int deep_p)
           return;
         }
 
-      FSET (f, menu_bar_vector, menu_items);
+      fset_menu_bar_vector (f, menu_items);
       f->menu_bar_items_used = menu_items_used;
 
       /* This undoes save_menu_items.  */
@@ -615,7 +615,7 @@ initialize_frame_menubar (FRAME_PTR f)
 {
   /* This function is called before the first chance to redisplay
      the frame.  It has to be, so the frame will have the right size.  */
-  FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+  fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
   set_frame_menubar (f, 1, 1);
 }
 
diff --git a/src/w32term.c b/src/w32term.c
index 7da9433d3f1..6948a98998e 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -2972,7 +2972,7 @@ x_frame_rehighlight (struct w32_display_info *dpyinfo)
            : dpyinfo->w32_focus_frame);
       if (! FRAME_LIVE_P (dpyinfo->x_highlight_frame))
         {
-          FSET (dpyinfo->w32_focus_frame, focus_frame, Qnil);
+          fset_focus_frame (dpyinfo->w32_focus_frame, Qnil);
           dpyinfo->x_highlight_frame = dpyinfo->w32_focus_frame;
         }
     }
@@ -3646,7 +3646,7 @@ x_scroll_bar_create (struct window *w, int top, int left, int width, int height)
   bar->next = FRAME_SCROLL_BARS (f);
   bar->prev = Qnil;
   XSETVECTOR (barobj, bar);
-  FSET (f, scroll_bars, barobj);
+  fset_scroll_bars (f, barobj);
   if (! NILP (bar->next))
     XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
 
@@ -3670,7 +3670,7 @@ x_scroll_bar_remove (struct scroll_bar *bar)
   my_destroy_window (f, SCROLL_BAR_W32_WINDOW (bar));
 
   /* Dissociate this scroll bar from its window.  */
-  WSET (XWINDOW (bar->window), vertical_scroll_bar, Qnil);
+  wset_vertical_scroll_bar (XWINDOW (bar->window), Qnil);
 
   UNBLOCK_INPUT;
 }
@@ -3808,7 +3808,7 @@ w32_set_vertical_scroll_bar (struct window *w,
 
   w32_set_scroll_bar_thumb (bar, portion, position, whole);
   XSETVECTOR (barobj, bar);
-  WSET (w, vertical_scroll_bar, barobj);
+  wset_vertical_scroll_bar (w, barobj);
 }
 
 
@@ -3832,12 +3832,12 @@ w32_condemn_scroll_bars (FRAME_PTR frame)
     {
       Lisp_Object bar;
       bar = FRAME_SCROLL_BARS (frame);
-      FSET (frame, scroll_bars, XSCROLL_BAR (bar)->next);
+      fset_scroll_bars (frame, XSCROLL_BAR (bar)->next);
       XSCROLL_BAR (bar)->next = FRAME_CONDEMNED_SCROLL_BARS (frame);
       XSCROLL_BAR (bar)->prev = Qnil;
       if (! NILP (FRAME_CONDEMNED_SCROLL_BARS (frame)))
         XSCROLL_BAR (FRAME_CONDEMNED_SCROLL_BARS (frame))->prev = bar;
-      FSET (frame, condemned_scroll_bars, bar);
+      fset_condemned_scroll_bars (frame, bar);
     }
 }
 
@@ -3869,7 +3869,7 @@ w32_redeem_scroll_bar (struct window *window)
         return;
       else if (EQ (FRAME_CONDEMNED_SCROLL_BARS (f),
                    window->vertical_scroll_bar))
-        FSET (f, condemned_scroll_bars, bar->next);
+        fset_condemned_scroll_bars (f, bar->next);
       else
         /* If its prev pointer is nil, it must be at the front of
            one or the other!  */
@@ -3884,7 +3884,7 @@ w32_redeem_scroll_bar (struct window *window)
   bar->next = FRAME_SCROLL_BARS (f);
   bar->prev = Qnil;
   XSETVECTOR (barobj, bar);
-  FSET (f, scroll_bars, barobj);
+  fset_scroll_bars (f, barobj);
   if (! NILP (bar->next))
     XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
 }
@@ -3901,7 +3901,7 @@ w32_judge_scroll_bars (FRAME_PTR f)
 
   /* Clear out the condemned list now so we won't try to process any
      more events on the hapless scroll bars.  */
-  FSET (f, condemned_scroll_bars, Qnil);
+  fset_condemned_scroll_bars (f, Qnil);
 
   for (; ! NILP (bar); bar = next)
     {
@@ -6232,7 +6232,7 @@ w32_create_terminal (struct w32_display_info *dpyinfo)
      terminal like X does.  */
   terminal->kboard = xmalloc (sizeof (KBOARD));
   init_kboard (terminal->kboard);
-  KSET (terminal->kboard, Vwindow_system, intern ("w32"));
+  kset_window_system (terminal->kboard, intern ("w32"));
   terminal->kboard->next_kboard = all_kboards;
   all_kboards = terminal->kboard;
   /* Don't let the initial kboard remain current longer than necessary.
diff --git a/src/w32uniscribe.c b/src/w32uniscribe.c
index 06f7b1bd192..50532acaff3 100644
--- a/src/w32uniscribe.c
+++ b/src/w32uniscribe.c
@@ -320,7 +320,23 @@ uniscribe_shape (Lisp_Object lgstring)
             }
           if (SUCCEEDED (result))
             {
-              int j, from, to;
+              int j, from, to, adj_offset = 0;
+
+              /* For RTL text, the Uniscribe shaper prepares the
+                 values in ADVANCES array for layout in reverse order,
+                 whereby "advance width" is applied to move the pen in
+                 reverse direction and _before_ drawing the glyph.
+                 Since we draw glyphs in their normal left-to-right
+                 order, we need to adjust the coordinates of each
+                 non-base glyph in a grapheme cluster via X-OFF
+                 component of the gstring's ADJUSTMENT sub-vector.
+                 This loop computes the initial value of the
+                 adjustment for the base character, which is then
+                 updated for each successive glyph in the grapheme
+                 cluster.  */
+              if (items[i].a.fRTL)
+                for (j = 1; j < nglyphs; j++)
+                  adj_offset += advances[j];
 
               from = 0;
               to = from;
@@ -392,9 +408,11 @@ uniscribe_shape (Lisp_Object lgstring)
 
                   if (SUCCEEDED (result))
                     {
-                      LGLYPH_SET_LBEARING (lglyph, char_metric.abcA);
-                      LGLYPH_SET_RBEARING (lglyph, (char_metric.abcA
-                                                    + char_metric.abcB));
+                      int lbearing = char_metric.abcA;
+                      int rbearing = char_metric.abcA + char_metric.abcB;
+
+                      LGLYPH_SET_LBEARING (lglyph, lbearing);
+                      LGLYPH_SET_RBEARING (lglyph, rbearing);
                     }
                   else
                     {
@@ -402,18 +420,43 @@ uniscribe_shape (Lisp_Object lgstring)
                       LGLYPH_SET_RBEARING (lglyph, advances[j]);
                     }
 
-                  if (offsets[j].du || offsets[j].dv)
+                  if (offsets[j].du || offsets[j].dv
+                      /* For non-base glyphs of RTL grapheme clusters,
+                         adjust the X offset even if both DU and DV
+                         are zero.  */
+                      || (!attributes[j].fClusterStart && items[i].a.fRTL))
                     {
                       Lisp_Object vec;
                       vec = Fmake_vector (make_number (3), Qnil);
-                      ASET (vec, 0, make_number (offsets[j].du));
+                      if (items[i].a.fRTL)
+                        {
+                          /* Empirically, it looks like Uniscribe
+                             interprets DU in reverse direction for
+                             RTL clusters.  E.g., if we don't reverse
+                             the direction, the Hebrew point HOLAM is
+                             drawn above the right edge of the base
+                             consonant, instead of above the left edge.  */
+                          ASET (vec, 0, make_number (-offsets[j].du
+                                                     + adj_offset));
+                          /* Update the adjustment value for the width
+                             advance of the glyph we just emitted.  */
+                          adj_offset -= 2 * advances[j];
+                        }
+                      else
+                        ASET (vec, 0, make_number (offsets[j].du + adj_offset));
                       ASET (vec, 1, make_number (offsets[j].dv));
                       /* Based on what ftfont.c does... */
                       ASET (vec, 2, make_number (advances[j]));
                       LGLYPH_SET_ADJUSTMENT (lglyph, vec);
                     }
                   else
-                    LGLYPH_SET_ADJUSTMENT (lglyph, Qnil);
+                    {
+                      LGLYPH_SET_ADJUSTMENT (lglyph, Qnil);
+                      /* Update the adjustment value to compensate for
+                         the width of the base character.  */
+                      if (items[i].a.fRTL)
+                        adj_offset -= advances[j];
+                    }
                 }
             }
         }
diff --git a/src/window.c b/src/window.c
index 7874105df1e..4d92566b243 100644
--- a/src/window.c
+++ b/src/window.c
@@ -19,6 +19,9 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
+
+#define WINDOW_INLINE EXTERN_INLINE
+
 #include <stdio.h>
 #include <setjmp.h>
 
@@ -130,6 +133,118 @@ static int window_scroll_pixel_based_preserve_y;
 static EMACS_INT window_scroll_preserve_hpos;
 static EMACS_INT window_scroll_preserve_vpos;
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+wset_combination_limit (struct window *w, Lisp_Object val)
+{
+  w->combination_limit = val;
+}
+static inline void
+wset_dedicated (struct window *w, Lisp_Object val)
+{
+  w->dedicated = val;
+}
+static inline void
+wset_display_table (struct window *w, Lisp_Object val)
+{
+  w->display_table = val;
+}
+static inline void
+wset_hchild (struct window *w, Lisp_Object val)
+{
+  w->hchild = val;
+}
+static inline void
+wset_left_fringe_width (struct window *w, Lisp_Object val)
+{
+  w->left_fringe_width = val;
+}
+static inline void
+wset_left_margin_cols (struct window *w, Lisp_Object val)
+{
+  w->left_margin_cols = val;
+}
+static inline void
+wset_new_normal (struct window *w, Lisp_Object val)
+{
+  w->new_normal = val;
+}
+static inline void
+wset_new_total (struct window *w, Lisp_Object val)
+{
+  w->new_total = val;
+}
+static inline void
+wset_next_buffers (struct window *w, Lisp_Object val)
+{
+  w->next_buffers = val;
+}
+static inline void
+wset_normal_cols (struct window *w, Lisp_Object val)
+{
+  w->normal_cols = val;
+}
+static inline void
+wset_normal_lines (struct window *w, Lisp_Object val)
+{
+  w->normal_lines = val;
+}
+static inline void
+wset_parent (struct window *w, Lisp_Object val)
+{
+  w->parent = val;
+}
+static inline void
+wset_pointm (struct window *w, Lisp_Object val)
+{
+  w->pointm = val;
+}
+static inline void
+wset_prev_buffers (struct window *w, Lisp_Object val)
+{
+  w->prev_buffers = val;
+}
+static inline void
+wset_right_fringe_width (struct window *w, Lisp_Object val)
+{
+  w->right_fringe_width = val;
+}
+static inline void
+wset_right_margin_cols (struct window *w, Lisp_Object val)
+{
+  w->right_margin_cols = val;
+}
+static inline void
+wset_scroll_bar_width (struct window *w, Lisp_Object val)
+{
+  w->scroll_bar_width = val;
+}
+static inline void
+wset_start (struct window *w, Lisp_Object val)
+{
+  w->start = val;
+}
+static inline void
+wset_temslot (struct window *w, Lisp_Object val)
+{
+  w->temslot = val;
+}
+static inline void
+wset_vchild (struct window *w, Lisp_Object val)
+{
+  w->vchild = val;
+}
+static inline void
+wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val)
+{
+  w->vertical_scroll_bar_type = val;
+}
+static inline void
+wset_window_parameters (struct window *w, Lisp_Object val)
+{
+  w->window_parameters = val;
+}
+
 struct window *
 decode_live_window (register Lisp_Object window)
 {
@@ -322,7 +437,10 @@ Return WINDOW.  */)
   if (EQ (frame, selected_frame))
     return Fselect_window (window, norecord);
   else
-    return FSET (XFRAME (frame), selected_window, window);
+    {
+      fset_selected_window (XFRAME (frame), window);
+      return window;
+    }
 }
 
 DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0,
@@ -359,13 +477,16 @@ select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap)
       record_buffer (w->buffer);
     }
 
+  /* Make the selected window's buffer current.  */
+  Fset_buffer (w->buffer);
+
   if (EQ (window, selected_window) && !inhibit_point_swap)
     return window;
 
   sf = SELECTED_FRAME ();
   if (XFRAME (WINDOW_FRAME (w)) != sf)
     {
-      FSET (XFRAME (WINDOW_FRAME (w)), selected_window, window);
+      fset_selected_window (XFRAME (WINDOW_FRAME (w)), window);
       /* Use this rather than Fhandle_switch_frame
          so that FRAME_FOCUS_FRAME is moved appropriately as we
          move around in the state where a minibuffer in a separate
@@ -376,11 +497,11 @@ select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap)
       return window;
     }
   else
-    FSET (sf, selected_window, window);
+    fset_selected_window (sf, window);
 
-  /* Store the current buffer's actual point into the
-     old selected window.  It belongs to that window,
-     and when the window is not selected, must be in the window.  */
+  /* Store the old selected window's buffer's point in pointm of the old
+     selected window.  It belongs to that window, and when the window is
+     not selected, must be in the window.  */
   if (!inhibit_point_swap)
     {
       ow = XWINDOW (selected_window);
@@ -391,10 +512,7 @@ select_window (Lisp_Object window, Lisp_Object norecord, int inhibit_point_swap)
     }
 
   selected_window = window;
-
-  Fset_buffer (w->buffer);
-
-  BSET (XBUFFER (w->buffer), last_selected_window, window);
+  bset_last_selected_window (XBUFFER (w->buffer), window);
 
   /* Go to the point recorded in the window.
      This is important when the buffer is in more
@@ -511,7 +629,8 @@ never \(re-)combined with WINDOW's siblings.  Other values are reserved
 for future use.  */)
   (Lisp_Object window, Lisp_Object limit)
 {
-  return WSET (decode_valid_window (window), combination_limit, limit);
+  wset_combination_limit (decode_valid_window (window), limit);
+  return limit;
 }
 
 DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0,
@@ -750,7 +869,8 @@ with two arguments: WINDOW, and the end trigger value.  Afterwards the
 end-trigger value is reset to nil.  */)
   (register Lisp_Object window, Lisp_Object value)
 {
-  return WSET (decode_live_window (window), redisplay_end_trigger, value);
+  wset_redisplay_end_trigger (decode_live_window (window), value);
+  return value;
 }
 
 DEFUN ("window-edges", Fwindow_edges, Swindow_edges, 0, 1, 0,
@@ -1287,22 +1407,21 @@ DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0,
        doc: /* Return current value of point in WINDOW.
 WINDOW must be a live window and defaults to the selected one.
 
-For a nonselected window, this is the value point would have
-if that window were selected.
+For a nonselected window, this is the value point would have if that
+window were selected.
 
-Note that, when WINDOW is the selected window and its buffer
-is also currently selected, the value returned is the same as (point).
-It would be more strictly correct to return the `top-level' value
-of point, outside of any save-excursion forms.
-But that is hard to define.  */)
+Note that, when WINDOW is selected, the value returned is the same as
+that returned by `point' for WINDOW's buffer.  It would be more strictly
+correct to return the `top-level' value of `point', outside of any
+`save-excursion' forms.  But that is hard to define.  */)
   (Lisp_Object window)
 {
   register struct window *w = decode_live_window (window);
 
-  if (w == XWINDOW (selected_window)
-      && current_buffer == XBUFFER (w->buffer))
-    return Fpoint ();
-  return Fmarker_position (w->pointm);
+  if (w == XWINDOW (selected_window))
+    return make_number (BUF_PT (XBUFFER (w->buffer)));
+  else
+    return Fmarker_position (w->pointm);
 }
 
 DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0,
@@ -1412,16 +1531,27 @@ Return POS.  */)
   register struct window *w = decode_live_window (window);
 
   CHECK_NUMBER_COERCE_MARKER (pos);
-  if (w == XWINDOW (selected_window)
-      && XBUFFER (w->buffer) == current_buffer)
-    Fgoto_char (pos);
-  else
-    set_marker_restricted (w->pointm, pos, w->buffer);
 
-  /* We have to make sure that redisplay updates the window to show
-     the new value of point.  */
-  if (!EQ (window, selected_window))
-    ++windows_or_buffers_changed;
+  if (w == XWINDOW (selected_window))
+    {
+      if (XBUFFER (w->buffer) == current_buffer)
+        Fgoto_char (pos);
+      else
+        {
+          struct buffer *old_buffer = current_buffer;
+
+          set_buffer_internal (XBUFFER (w->buffer));
+          Fgoto_char (pos);
+          set_buffer_internal (old_buffer);
+        }
+    }
+  else
+    {
+      set_marker_restricted (w->pointm, pos, w->buffer);
+      /* We have to make sure that redisplay updates the window to show
+         the new value of point.  */
+      ++windows_or_buffers_changed;
+    }
 
   return pos;
 }
@@ -1671,7 +1801,8 @@ buffer.  If and when `set-window-buffer' displays another buffer in a
 window, it also makes sure that the window is no more dedicated.  */)
   (Lisp_Object window, Lisp_Object flag)
 {
-  return WSET (decode_live_window (window), dedicated, flag);
+  wset_dedicated (decode_live_window (window), flag);
+  return flag;
 }
 
 DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers,
@@ -1697,7 +1828,8 @@ where BUFFER is a buffer, WINDOW-START is the start position of the
 window for that buffer, and POS is a window-specific point value.  */)
      (Lisp_Object window, Lisp_Object prev_buffers)
 {
-  return WSET (decode_live_window (window), prev_buffers, prev_buffers);
+  wset_prev_buffers (decode_live_window (window), prev_buffers);
+  return prev_buffers;
 }
 
 DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers,
@@ -1716,7 +1848,8 @@ WINDOW must be a live window and defaults to the selected one.
 NEXT-BUFFERS should be a list of buffers.  */)
      (Lisp_Object window, Lisp_Object next_buffers)
 {
-  return WSET (decode_live_window (window), next_buffers, next_buffers);
+  wset_next_buffers (decode_live_window (window), next_buffers);
+  return next_buffers;
 }
 
 DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters,
@@ -1753,8 +1886,8 @@ Return VALUE.  */)
 
   old_alist_elt = Fassq (parameter, w->window_parameters);
   if (NILP (old_alist_elt))
-    WSET (w, window_parameters,
-          Fcons (Fcons (parameter, value), w->window_parameters));
+    wset_window_parameters
+      (w, Fcons (Fcons (parameter, value), w->window_parameters));
   else
     Fsetcdr (old_alist_elt, value);
   return value;
@@ -1799,7 +1932,8 @@ DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_displa
 WINDOW must be a live window and defaults to the selected one.  */)
   (register Lisp_Object window, Lisp_Object table)
 {
-  return WSET (decode_live_window (window), display_table, table);
+  wset_display_table (decode_live_window (window), table);
+  return table;
 }
 
 /* Record info on buffer window W is displaying
@@ -1848,7 +1982,7 @@ unshow_buffer (register struct window *w)
 
   if (WINDOWP (BVAR (b, last_selected_window))
       && w == XWINDOW (BVAR (b, last_selected_window)))
-    BSET (b, last_selected_window, Qnil);
+    bset_last_selected_window (b, Qnil);
 }
 
 /* Put NEW into the window structure in place of OLD.  SETFLAG zero
@@ -1863,18 +1997,18 @@ replace_window (Lisp_Object old, Lisp_Object new, int setflag)
   /* If OLD is its frame's root window, then NEW is the new
      root window for that frame.  */
   if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame))))
-    FSET (XFRAME (o->frame), root_window, new);
+    fset_root_window (XFRAME (o->frame), new);
 
    if (setflag)
      {
-      WSET (n, left_col, o->left_col);
-      WSET (n, top_line, o->top_line);
-      WSET (n, total_cols, o->total_cols);
-      WSET (n, total_lines, o->total_lines);
-      WSET (n, normal_cols, o->normal_cols);
-      WSET (o, normal_cols, make_float (1.0));
-      WSET (n, normal_lines, o->normal_lines);
-      WSET (o, normal_lines, make_float (1.0));
+      wset_left_col (n, o->left_col);
+      wset_top_line (n, o->top_line);
+      wset_total_cols (n, o->total_cols);
+      wset_total_lines (n, o->total_lines);
+      wset_normal_cols (n, o->normal_cols);
+      wset_normal_cols (o, make_float (1.0));
+      wset_normal_lines (n, o->normal_lines);
+      wset_normal_lines (o, make_float (1.0));
       n->desired_matrix = n->current_matrix = 0;
       n->vscroll = 0;
       memset (&n->cursor, 0, sizeof (n->cursor));
@@ -1884,30 +2018,30 @@ replace_window (Lisp_Object old, Lisp_Object new, int setflag)
       n->phys_cursor_width = -1;
       n->must_be_updated_p = 0;
       n->pseudo_window_p = 0;
-      WSET (n, window_end_vpos, make_number (0));
-      WSET (n, window_end_pos, make_number (0));
-      WSET (n, window_end_valid, Qnil);
+      wset_window_end_vpos (n, make_number (0));
+      wset_window_end_pos (n, make_number (0));
+      wset_window_end_valid (n, Qnil);
       n->frozen_window_start_p = 0;
     }
 
   tem = o->next;
-  WSET (n, next, tem);
+  wset_next (n, tem);
   if (!NILP (tem))
-    WSET (XWINDOW (tem), prev, new);
+    wset_prev (XWINDOW (tem), new);
 
   tem = o->prev;
-  WSET (n, prev, tem);
+  wset_prev (n, tem);
   if (!NILP (tem))
-    WSET (XWINDOW (tem), next, new);
+    wset_next (XWINDOW (tem), new);
 
   tem = o->parent;
-  WSET (n, parent, tem);
+  wset_parent (n, tem);
   if (!NILP (tem))
     {
       if (EQ (XWINDOW (tem)->vchild, old))
-        WSET (XWINDOW (tem), vchild, new);
+        wset_vchild (XWINDOW (tem), new);
       if (EQ (XWINDOW (tem)->hchild, old))
-        WSET (XWINDOW (tem), hchild, new);
+        wset_hchild (XWINDOW (tem), new);
     }
 }
 
@@ -1940,34 +2074,34 @@ recombine_windows (Lisp_Object window)
              assign new normal sizes.  */
           if (NILP (w->prev))
             if (horflag)
-              WSET (p, hchild, child);
+              wset_hchild (p, child);
             else
-              WSET (p, vchild, child);
+              wset_vchild (p, child);
           else
             {
-              WSET (c, prev, w->prev);
-              WSET (XWINDOW (w->prev), next, child);
+              wset_prev (c, w->prev);
+              wset_next (XWINDOW (w->prev), child);
             }
 
           while (c)
             {
-              WSET (c, parent, parent);
+              wset_parent (c, parent);
 
               if (horflag)
-                WSET (c, normal_cols,
-                      make_float (XFLOATINT (c->total_cols)
-                                  / XFLOATINT (p->total_cols)));
+                wset_normal_cols (c,
+                                  make_float (XFLOATINT (c->total_cols)
+                                              / XFLOATINT (p->total_cols)));
               else
-                WSET (c, normal_lines,
-                      make_float (XFLOATINT (c->total_lines)
-                                  / XFLOATINT (p->total_lines)));
+                wset_normal_lines (c,
+                                   make_float (XFLOATINT (c->total_lines)
+                                               / XFLOATINT (p->total_lines)));
 
               if (NILP (c->next))
                 {
                   if (!NILP (w->next))
                     {
-                      WSET (c, next, w->next);
-                      WSET (XWINDOW (c->next), prev, child);
+                      wset_next (c, w->next);
+                      wset_prev (XWINDOW (c->next), child);
                     }
 
                   c = 0;
@@ -1980,8 +2114,8 @@ recombine_windows (Lisp_Object window)
             }
 
           /* WINDOW can be deleted now.  */
-          WSET (w, vchild, Qnil);
-          WSET (w, hchild, Qnil);
+          wset_vchild (w, Qnil);
+          wset_hchild (w, Qnil);
         }
     }
 }
@@ -2146,7 +2280,7 @@ decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object
 
   /* ALL_FRAMES nil doesn't specify which frames to include.  */
   if (NILP (*all_frames))
-    *all_frames 
+    *all_frames
       = (!EQ (*minibuf, Qlambda)
          ? FRAME_MINIBUF_WINDOW (XFRAME (XWINDOW (*window)->frame))
          : Qnil);
@@ -2502,7 +2636,7 @@ window_loop (enum window_loop type, Lisp_Object obj, int mini, Lisp_Object frame
             if (EQ (w->buffer, obj))
               {
                 /* Undedicate WINDOW.  */
-                WSET (w, dedicated, Qnil);
+                wset_dedicated (w, Qnil);
                 /* Make WINDOW show the buffer returned by
                    other_buffer_safely, don't run any hooks.  */
                 set_window_buffer
@@ -2659,7 +2793,7 @@ window-start value is reasonable when this function is called.  */)
           if (EQ (selected_frame, w->frame))
             Fselect_window (window, Qnil);
           else
-            FSET (f, selected_window, window);
+            fset_selected_window (f, window);
         }
     }
   else
@@ -2689,7 +2823,7 @@ window-start value is reasonable when this function is called.  */)
           if (EQ (selected_frame, w->frame))
             Fselect_window (swindow, Qnil);
           else
-            FSET (f, selected_window, swindow);
+            fset_selected_window (f, swindow);
         }
     }
 
@@ -2724,7 +2858,7 @@ window-start value is reasonable when this function is called.  */)
       /* Resize child windows vertically.  */
       XSETINT (delta, XINT (r->total_lines)
                - XINT (w->total_lines));
-      WSET (w, top_line, r->top_line);
+      wset_top_line (w, r->top_line);
       resize_root_window (window, delta, Qnil, Qnil);
       if (window_resize_check (w, 0))
         window_resize_apply (w, 0);
@@ -2740,10 +2874,10 @@ window-start value is reasonable when this function is called.  */)
       /* Resize child windows horizontally.  */
       if (!resize_failed)
         {
-          WSET (w, left_col, r->left_col);
-          XSETINT (delta, XINT (r->total_cols) 
-                   - XINT (w->total_cols));
-          WSET (w, left_col, r->left_col);
+          wset_left_col (w, r->left_col);
+          XSETINT (delta,
+                   XINT (r->total_cols) - XINT (w->total_cols));
+          wset_left_col (w, r->left_col);
           resize_root_window (window, delta, Qt, Qnil);
           if (window_resize_check (w, 1))
             window_resize_apply (w, 1);
@@ -2771,32 +2905,32 @@ window-start value is reasonable when this function is called.  */)
     {
       sibling = w->prev;
       s = XWINDOW (sibling);
-      WSET (s, next, w->next);
+      wset_next (s, w->next);
       if (!NILP (s->next))
-        WSET (XWINDOW (s->next), prev, sibling);
+        wset_prev (XWINDOW (s->next), sibling);
     }
   else
     /* Get SIBLING below (on the right of) WINDOW.  */
     {
       sibling = w->next;
       s = XWINDOW (sibling);
-      WSET (s, prev, Qnil);
+      wset_prev (s, Qnil);
       if (!NILP (XWINDOW (w->parent)->vchild))
-        WSET (XWINDOW (w->parent), vchild, sibling);
+        wset_vchild (XWINDOW (w->parent), sibling);
       else
-        WSET (XWINDOW (w->parent), hchild, sibling);
+        wset_hchild (XWINDOW (w->parent), sibling);
     }
 
   /* Delete ROOT and all child windows of ROOT.  */
   if (!NILP (r->vchild))
     {
       delete_all_child_windows (r->vchild);
-      WSET (r, vchild, Qnil);
+      wset_vchild (r, Qnil);
     }
   else if (!NILP (r->hchild))
     {
       delete_all_child_windows (r->hchild);
-      WSET (r, hchild, Qnil);
+      wset_hchild (r, Qnil);
     }
 
   replace_window (root, window, 1);
@@ -2823,7 +2957,7 @@ window-start value is reasonable when this function is called.  */)
           pos = *vmotion (startpos, -top, w);
 
           set_marker_both (w->start, w->buffer, pos.bufpos, pos.bytepos);
-          WSET (w, window_end_valid, Qnil);
+          wset_window_end_valid (w, Qnil);
           w->start_at_line_beg = (pos.bytepos == BEGV_BYTE
                                     || FETCH_BYTE (pos.bytepos - 1) == '\n');
           /* We need to do this, so that the window-scroll-functions
@@ -2914,14 +3048,14 @@ adjust_window_margins (struct window *w)
     {
       if (WINDOW_LEFT_MARGIN_COLS (w) > 0)
         {
-          WSET (w, left_margin_cols, make_number (margin_cols / 2));
-          WSET (w, right_margin_cols, make_number (margin_cols / 2));   
+          wset_left_margin_cols (w, make_number (margin_cols / 2));
+          wset_right_margin_cols (w, make_number (margin_cols / 2));
         }
       else
-        WSET (w, right_margin_cols, make_number (margin_cols));
+        wset_right_margin_cols (w, make_number (margin_cols));
     }
   else
-    WSET (w, left_margin_cols, make_number (margin_cols));
+    wset_left_margin_cols (w, make_number (margin_cols));
   return 1;
 }
 
@@ -3021,23 +3155,23 @@ set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int
   ptrdiff_t count = SPECPDL_INDEX ();
   int samebuf = EQ (buffer, w->buffer);
 
-  WSET (w, buffer, buffer);
+  wset_buffer (w, buffer);
 
   if (EQ (window, selected_window))
-    BSET (b, last_selected_window, window);
+    bset_last_selected_window (b, window);
 
   /* Let redisplay errors through.  */
   b->display_error_modiff = 0;
 
   /* Update time stamps of buffer display.  */
   if (INTEGERP (BVAR (b, display_count)))
-    BSET (b, display_count, make_number (XINT (BVAR (b, display_count)) + 1));
-  BSET (b, display_time, Fcurrent_time ());
+    bset_display_count (b, make_number (XINT (BVAR (b, display_count)) + 1));
+  bset_display_time (b, Fcurrent_time ());
 
-  WSET (w, window_end_pos, make_number (0));
-  WSET (w, window_end_vpos, make_number (0));
+  wset_window_end_pos (w, make_number (0));
+  wset_window_end_vpos (w, make_number (0));
   memset (&w->last_cursor, 0, sizeof w->last_cursor);
-  WSET (w, window_end_valid, Qnil);
+  wset_window_end_valid (w, Qnil);
   if (!(keep_margins_p && samebuf))
     { /* If we're not actually changing the buffer, don't reset hscroll and
          vscroll.  This case happens for example when called from
@@ -3082,8 +3216,8 @@ set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int
       Lisp_Object save_left = w->left_margin_cols;
       Lisp_Object save_right = w->right_margin_cols;
 
-      WSET (w, left_margin_cols, Qnil);
-      WSET (w, right_margin_cols, Qnil);
+      wset_left_margin_cols (w, Qnil);
+      wset_right_margin_cols (w, Qnil);
 
       Fset_window_fringes (window,
                            BVAR (b, left_fringe_width), BVAR (b, right_fringe_width),
@@ -3093,8 +3227,8 @@ set_window_buffer (Lisp_Object window, Lisp_Object buffer, int run_hooks_p, int
                                BVAR (b, scroll_bar_width),
                                BVAR (b, vertical_scroll_bar_type), Qnil);
 
-      WSET (w, left_margin_cols, save_left);
-      WSET (w, right_margin_cols, save_right);
+      wset_left_margin_cols (w, save_left);
+      wset_right_margin_cols (w, save_right);
 
       Fset_window_margins (window,
                            BVAR (b, left_margin_cols), BVAR (b, right_margin_cols));
@@ -3153,7 +3287,7 @@ This function runs `window-scroll-functions' before running
           else
             /* WINDOW is weakly dedicated to its buffer, reset
                dedication.  */
-            WSET (w, dedicated, Qnil);
+            wset_dedicated (w, Qnil);
 
           call1 (Qrecord_window_buffer, window);
         }
@@ -3223,7 +3357,7 @@ temp_output_buffer_show (register Lisp_Object buf)
   register Lisp_Object window;
   register struct window *w;
 
-  BSET (XBUFFER (buf), directory, BVAR (current_buffer, directory));
+  bset_directory (XBUFFER (buf), BVAR (current_buffer, directory));
 
   Fset_buffer (buf);
   BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF;
@@ -3299,17 +3433,17 @@ make_parent_window (Lisp_Object window, int horflag)
 
   replace_window (window, parent, 1);
 
-  WSET (o, next, Qnil);
-  WSET (o, prev, Qnil);
-  WSET (o, parent, parent);
+  wset_next (o, Qnil);
+  wset_prev (o, Qnil);
+  wset_parent (o, parent);
 
-  WSET (p, hchild, horflag ? window : Qnil);
-  WSET (p, vchild, horflag ? Qnil : window);
-  WSET (p, start, Qnil);
-  WSET (p, pointm, Qnil);
-  WSET (p, buffer, Qnil);
-  WSET (p, combination_limit, Qnil);
-  WSET (p, window_parameters, Qnil);
+  wset_hchild (p, horflag ? window : Qnil);
+  wset_vchild (p, horflag ? Qnil : window);
+  wset_start (p, Qnil);
+  wset_pointm (p, Qnil);
+  wset_buffer (p, Qnil);
+  wset_combination_limit (p, Qnil);
+  wset_window_parameters (p, Qnil);
 }
 
 /* Make new window from scratch.  */
@@ -3322,19 +3456,19 @@ make_window (void)
   w = allocate_window ();
   /* Initialize Lisp data.  Note that allocate_window initializes all
      Lisp data to nil, so do it only for slots which should not be nil.  */
-  WSET (w, left_col, make_number (0));
-  WSET (w, top_line, make_number (0));
-  WSET (w, total_lines, make_number (0));
-  WSET (w, total_cols, make_number (0));
-  WSET (w, normal_lines, make_float (1.0));
-  WSET (w, normal_cols, make_float (1.0));
-  WSET (w, new_total, make_number (0));
-  WSET (w, new_normal, make_number (0));
-  WSET (w, start, Fmake_marker ());
-  WSET (w, pointm, Fmake_marker ());
-  WSET (w, vertical_scroll_bar_type, Qt);
-  WSET (w, window_end_pos, make_number (0));
-  WSET (w, window_end_vpos, make_number (0));
+  wset_left_col (w, make_number (0));
+  wset_top_line (w, make_number (0));
+  wset_total_lines (w, make_number (0));
+  wset_total_cols (w, make_number (0));
+  wset_normal_lines (w, make_float (1.0));
+  wset_normal_cols (w, make_float (1.0));
+  wset_new_total (w, make_number (0));
+  wset_new_normal (w, make_number (0));
+  wset_start (w, Fmake_marker ());
+  wset_pointm (w, Fmake_marker ());
+  wset_vertical_scroll_bar_type (w, Qt);
+  wset_window_end_pos (w, make_number (0));
+  wset_window_end_vpos (w, make_number (0));
 
   /* Initialize non-Lisp data.  Note that allocate_window zeroes out all
      non-Lisp data, so do it only for slots which should not be zero.  */
@@ -3365,9 +3499,9 @@ Note: This function does not operate on any child windows of WINDOW.  */)
 
   CHECK_NUMBER (size);
   if (NILP (add))
-    WSET (w, new_total, size);
+    wset_new_total (w, size);
   else
-    WSET (w, new_total, make_number (XINT (w->new_total) + XINT (size)));
+    wset_new_total (w, make_number (XINT (w->new_total) + XINT (size)));
 
   return w->new_total;
 }
@@ -3380,7 +3514,8 @@ Return SIZE.
 Note: This function does not operate on any child windows of WINDOW.  */)
      (Lisp_Object window, Lisp_Object size)
 {
-  return WSET (decode_valid_window (window), new_normal, size);
+  wset_new_normal (decode_valid_window (window), size);
+  return size;
 }
 
 /* Return 1 if setting w->total_lines (w->total_cols if HORFLAG is
@@ -3481,17 +3616,17 @@ window_resize_apply (struct window *w, int horflag)
      parent window has been set *before*.  */
   if (horflag)
     {
-      WSET (w, total_cols, w->new_total);
+      wset_total_cols (w, w->new_total);
       if (NUMBERP (w->new_normal))
-        WSET (w, normal_cols, w->new_normal);
+        wset_normal_cols (w, w->new_normal);
 
       pos = XINT (w->left_col);
     }
   else
     {
-      WSET (w, total_lines, w->new_total);
+      wset_total_lines (w, w->new_total);
       if (NUMBERP (w->new_normal))
-        WSET (w, normal_lines, w->new_normal);
+        wset_normal_lines (w, w->new_normal);
 
       pos = XINT (w->top_line);
     }
@@ -3503,9 +3638,9 @@ window_resize_apply (struct window *w, int horflag)
       while (c)
         {
           if (horflag)
-            WSET (c, left_col, make_number (pos));
+            wset_left_col (c, make_number (pos));
           else
-            WSET (c, top_line, make_number (pos));
+            wset_top_line (c, make_number (pos));
           window_resize_apply (c, horflag);
           if (!horflag)
             pos = pos + XINT (c->total_lines);
@@ -3519,9 +3654,9 @@ window_resize_apply (struct window *w, int horflag)
       while (c)
         {
           if (horflag)
-            WSET (c, left_col, make_number (pos));
+            wset_left_col (c, make_number (pos));
           else
-            WSET (c, top_line, make_number (pos));
+            wset_top_line (c, make_number (pos));
           window_resize_apply (c, horflag);
           if (horflag)
             pos = pos + XINT (c->total_cols);
@@ -3602,17 +3737,17 @@ resize_frame_windows (struct frame *f, int size, int horflag)
                      - ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f))
                         ? 1 : 0)));
 
-  WSET (r, top_line, make_number (FRAME_TOP_MARGIN (f)));
+  wset_top_line (r, make_number (FRAME_TOP_MARGIN (f)));
   if (NILP (r->vchild) && NILP (r->hchild))
     /* For a leaf root window just set the size.  */
     if (horflag)
-      WSET (r, total_cols, make_number (new_size));
+      wset_total_cols (r, make_number (new_size));
     else
-      WSET (r, total_lines, make_number (new_size));
+      wset_total_lines (r, make_number (new_size));
   else
     {
       /* old_size is the old size of the frame's root window.  */
-      int old_size = XFASTINT (horflag ? r->total_cols 
+      int old_size = XFASTINT (horflag ? r->total_cols
                                : r->total_lines);
       Lisp_Object delta;
 
@@ -3643,9 +3778,9 @@ resize_frame_windows (struct frame *f, int size, int horflag)
                   root = f->selected_window;
                   Fdelete_other_windows_internal (root, Qnil);
                   if (horflag)
-                    WSET (XWINDOW (root), total_cols, make_number (new_size));
+                    wset_total_cols (XWINDOW (root), make_number (new_size));
                   else
-                    WSET (XWINDOW (root), total_lines, make_number (new_size));
+                    wset_total_lines (XWINDOW (root), make_number (new_size));
                 }
             }
         }
@@ -3655,13 +3790,13 @@ resize_frame_windows (struct frame *f, int size, int horflag)
     {
       m = XWINDOW (mini);
       if (horflag)
-        WSET (m, total_cols, make_number (size));
+        wset_total_cols (m, make_number (size));
       else
         {
           /* Are we sure we always want 1 line here?  */
-          WSET (m, total_lines, make_number (1));
-          WSET (m, top_line,
-                make_number (XINT (r->top_line) + XINT (r->total_lines)));
+          wset_total_lines (m, make_number (1));
+          wset_top_line
+            (m, make_number (XINT (r->top_line) + XINT (r->total_lines)));
         }
     }
 }
@@ -3742,15 +3877,14 @@ set correctly.  See the code of `split-window' for how this is done.  */)
     {
       p = XWINDOW (o->parent);
       /* Temporarily pretend we split the parent window.  */
-      WSET (p, new_total,
-            make_number (XINT (horflag ? p->total_cols : p->total_lines)
+      wset_new_total
+        (p, make_number (XINT (horflag ? p->total_cols : p->total_lines)
                          - XINT (total_size)));
       if (!window_resize_check (p, horflag))
         error ("Window sizes don't fit");
       else
         /* Undo the temporary pretension.  */
-        WSET (p, new_total,
-              horflag ? p->total_cols : p->total_lines);
+        wset_new_total (p, horflag ? p->total_cols : p->total_lines);
     }
   else
     {
@@ -3774,10 +3908,10 @@ set correctly.  See the code of `split-window' for how this is done.  */)
       p = XWINDOW (o->parent);
       /* Store value of `window-combination-limit' in new parent's
          combination_limit slot.  */
-      WSET (p, combination_limit, Vwindow_combination_limit);
+      wset_combination_limit (p, Vwindow_combination_limit);
       /* These get applied below.  */
-      WSET (p, new_total, horflag ? o->total_cols : o->total_lines);
-      WSET (p, new_normal, new_normal);
+      wset_new_total (p, horflag ? o->total_cols : o->total_lines);
+      wset_new_normal (p, new_normal);
     }
   else
     p = XWINDOW (o->parent);
@@ -3786,62 +3920,62 @@ set correctly.  See the code of `split-window' for how this is done.  */)
   FRAME_WINDOW_SIZES_CHANGED (f) = 1;
   new = make_window ();
   n = XWINDOW (new);
-  WSET (n, frame, frame);
-  WSET (n, parent, o->parent);
-  WSET (n, vchild, Qnil);
-  WSET (n, hchild, Qnil);
+  wset_frame (n, frame);
+  wset_parent (n, o->parent);
+  wset_vchild (n, Qnil);
+  wset_hchild (n, Qnil);
 
   if (EQ (side, Qabove) || EQ (side, Qleft))
     {
-      WSET (n, prev, o->prev);
+      wset_prev (n, o->prev);
       if (NILP (n->prev))
         if (horflag)
-          WSET (p, hchild, new);
+          wset_hchild (p, new);
         else
-          WSET (p, vchild, new);
+          wset_vchild (p, new);
       else
-        WSET (XWINDOW (n->prev), next, new);
-      WSET (n, next, old);
-      WSET (o, prev, new);
+        wset_next (XWINDOW (n->prev), new);
+      wset_next (n, old);
+      wset_prev (o, new);
     }
   else
     {
-      WSET (n, next, o->next);
+      wset_next (n, o->next);
       if (!NILP (n->next))
-        WSET (XWINDOW (n->next), prev, new);
-      WSET (n, prev, old);
-      WSET (o, next, new);
+        wset_prev (XWINDOW (n->next), new);
+      wset_prev (n, old);
+      wset_next (o, new);
     }
 
-  WSET (n, buffer, Qt);
-  WSET (n, window_end_valid, Qnil);
+  wset_buffer (n, Qt);
+  wset_window_end_valid (n, Qnil);
   memset (&n->last_cursor, 0, sizeof n->last_cursor);
 
   /* Get special geometry settings from reference window.  */
-  WSET (n, left_margin_cols, r->left_margin_cols);
-  WSET (n, right_margin_cols, r->right_margin_cols);
-  WSET (n, left_fringe_width, r->left_fringe_width);
-  WSET (n, right_fringe_width, r->right_fringe_width);
+  wset_left_margin_cols (n, r->left_margin_cols);
+  wset_right_margin_cols (n, r->right_margin_cols);
+  wset_left_fringe_width (n, r->left_fringe_width);
+  wset_right_fringe_width (n, r->right_fringe_width);
   n->fringes_outside_margins = r->fringes_outside_margins;
-  WSET (n, scroll_bar_width, r->scroll_bar_width);
-  WSET (n, vertical_scroll_bar_type, r->vertical_scroll_bar_type);
+  wset_scroll_bar_width (n, r->scroll_bar_width);
+  wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type);
 
   /* Directly assign orthogonal coordinates and sizes.  */
   if (horflag)
     {
-      WSET (n, top_line, o->top_line);
-      WSET (n, total_lines, o->total_lines);
+      wset_top_line (n, o->top_line);
+      wset_total_lines (n, o->total_lines);
     }
   else
     {
-      WSET (n, left_col, o->left_col);
-      WSET (n, total_cols, o->total_cols);
+      wset_left_col (n, o->left_col);
+      wset_total_cols (n, o->total_cols);
     }
 
   /* Iso-coordinates and sizes are assigned by window_resize_apply,
      get them ready here.  */
-  WSET (n, new_total, total_size);
-  WSET (n, new_normal, normal_size);
+  wset_new_total (n, total_size);
+  wset_new_normal (n, normal_size);
 
   BLOCK_INPUT;
   window_resize_apply (p, horflag);
@@ -3907,20 +4041,20 @@ Signal an error when WINDOW is the only window on its frame.  */)
       before_sibling = 1;
       sibling = w->next;
       s = XWINDOW (sibling);
-      WSET (s, prev, Qnil);
+      wset_prev (s, Qnil);
       if (horflag)
-        WSET (p, hchild, sibling);
+        wset_hchild (p, sibling);
       else
-        WSET (p, vchild, sibling);
+        wset_vchild (p, sibling);
     }
   else
     /* Get SIBLING above (on the left of) WINDOW.  */
     {
       sibling = w->prev;
       s = XWINDOW (sibling);
-      WSET (s, next, w->next);
+      wset_next (s, w->next);
       if (!NILP (s->next))
-        WSET (XWINDOW (s->next), prev, sibling);
+        wset_prev (XWINDOW (s->next), sibling);
     }
 
   if (window_resize_check (r, horflag)
@@ -3947,25 +4081,25 @@ Signal an error when WINDOW is the only window on its frame.  */)
       Vwindow_list = Qnil;
       FRAME_WINDOW_SIZES_CHANGED (f) = 1;
 
-      WSET (w, next, Qnil);  /* Don't delete w->next too.  */
+      wset_next (w, Qnil);  /* Don't delete w->next too.  */
       free_window_matrices (w);
 
       if (!NILP (w->vchild))
         {
           delete_all_child_windows (w->vchild);
-          WSET (w, vchild, Qnil);
+          wset_vchild (w, Qnil);
         }
       else if (!NILP (w->hchild))
         {
           delete_all_child_windows (w->hchild);
-          WSET (w, hchild, Qnil);
+          wset_hchild (w, Qnil);
         }
       else if (!NILP (w->buffer))
         {
           unshow_buffer (w);
           unchain_marker (XMARKER (w->pointm));
           unchain_marker (XMARKER (w->start));
-          WSET (w, buffer, Qnil);
+          wset_buffer (w, Qnil);
         }
 
       if (NILP (s->prev) && NILP (s->next))
@@ -3976,11 +4110,11 @@ Signal an error when WINDOW is the only window on its frame.  */)
           replace_window (parent, sibling, 0);
           /* Have SIBLING inherit the following three slot values from
              PARENT (the combination_limit slot is not inherited).  */
-          WSET (s, normal_cols, p->normal_cols);
-          WSET (s, normal_lines, p->normal_lines);
+          wset_normal_cols (s, p->normal_cols);
+          wset_normal_lines (s, p->normal_lines);
           /* Mark PARENT as deleted.  */
-          WSET (p, vchild, Qnil);
-          WSET (p, hchild, Qnil);
+          wset_vchild (p, Qnil);
+          wset_hchild (p, Qnil);
           /* Try to merge SIBLING into its new parent.  */
           recombine_windows (sibling);
         }
@@ -4000,7 +4134,7 @@ Signal an error when WINDOW is the only window on its frame.  */)
           if (EQ (FRAME_SELECTED_WINDOW (f), selected_window))
             Fselect_window (new_selected_window, Qt);
           else
-            FSET (f, selected_window, new_selected_window);
+            fset_selected_window (f, new_selected_window);
 
           UNBLOCK_INPUT;
 
@@ -4014,7 +4148,7 @@ Signal an error when WINDOW is the only window on its frame.  */)
           if (EQ (FRAME_SELECTED_WINDOW (f), selected_window))
             Fselect_window (new_selected_window, Qnil);
           else
-            FSET (f, selected_window, new_selected_window);
+            fset_selected_window (f, new_selected_window);
         }
       else
         UNBLOCK_INPUT;
@@ -4027,17 +4161,17 @@ Signal an error when WINDOW is the only window on its frame.  */)
     {
       if (before_sibling)
         {
-          WSET (s, prev, window);
+          wset_prev (s, window);
           if (horflag)
-            WSET (p, hchild, window);
+            wset_hchild (p, window);
           else
-            WSET (p, vchild, window);
+            wset_vchild (p, window);
         }
       else
         {
-          WSET (s, next, window);
+          wset_next (s, window);
           if (!NILP (w->next))
-            WSET (XWINDOW (w->next), prev, window);
+            wset_prev (XWINDOW (w->next), window);
         }
       error ("Deletion failed");
     }
@@ -4071,10 +4205,10 @@ grow_mini_window (struct window *w, int delta)
       window_resize_apply (r, 0);
 
       /* Grow the mini-window.  */
-      WSET (w, top_line,
-            make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines)));
-      WSET (w, total_lines,
-            make_number (XFASTINT (w->total_lines) - XINT (value)));
+      wset_top_line
+        (w, make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines)));
+      wset_total_lines
+        (w, make_number (XFASTINT (w->total_lines) - XINT (value)));
       w->last_modified = 0;
       w->last_overlay_modified = 0;
 
@@ -4108,9 +4242,9 @@ shrink_mini_window (struct window *w)
           window_resize_apply (r, 0);
 
           /* Shrink the mini-window.  */
-          WSET (w, top_line,
-                make_number (XFASTINT (r->top_line) + XFASTINT (r->total_lines)));
-          WSET (w, total_lines, make_number (1));
+          wset_top_line (w, make_number (XFASTINT (r->top_line)
+                                         + XFASTINT (r->total_lines)));
+          wset_total_lines (w, make_number (1));
 
           w->last_modified = 0;
           w->last_overlay_modified = 0;
@@ -4151,9 +4285,9 @@ DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal, Sresize_mini
       BLOCK_INPUT;
       window_resize_apply (r, 0);
 
-      WSET (w, total_lines, w->new_total);
-      WSET (w, top_line,
-            make_number (XINT (r->top_line) + XINT (r->total_lines)));
+      wset_total_lines (w, w->new_total);
+      wset_top_line (w, make_number (XINT (r->top_line)
+                                     + XINT (r->total_lines)));
 
       windows_or_buffers_changed++;
       FRAME_WINDOW_SIZES_CHANGED (f) = 1;
@@ -5221,7 +5355,7 @@ and redisplay normally--don't erase and redraw the frame.  */)
 
   /* Set the new window start.  */
   set_marker_both (w->start, w->buffer, charpos, bytepos);
-  WSET (w, window_end_valid, Qnil);
+  wset_window_end_valid (w, Qnil);
 
   w->optional_new_start = 1;
 
@@ -5539,34 +5673,34 @@ the return value is nil.  Otherwise the value is t.  */)
           p = SAVED_WINDOW_N (saved_windows, k);
           window = p->window;
           w = XWINDOW (window);
-          WSET (w, next, Qnil);
+          wset_next (w, Qnil);
 
           if (!NILP (p->parent))
-            WSET (w, parent, SAVED_WINDOW_N 
-                  (saved_windows, XFASTINT (p->parent))->window);
+            wset_parent
+              (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->parent))->window);
           else
-            WSET (w, parent, Qnil);
+            wset_parent (w, Qnil);
 
           if (!NILP (p->prev))
             {
-              WSET (w, prev, SAVED_WINDOW_N
-                    (saved_windows, XFASTINT (p->prev))->window);
-              WSET (XWINDOW (w->prev), next, p->window);
+              wset_prev
+                (w, SAVED_WINDOW_N (saved_windows, XFASTINT (p->prev))->window);
+              wset_next (XWINDOW (w->prev), p->window);
             }
           else
             {
-              WSET (w, prev, Qnil);
+              wset_prev (w, Qnil);
               if (!NILP (w->parent))
                 {
                   if (EQ (p->total_cols, XWINDOW (w->parent)->total_cols))
                     {
-                      WSET (XWINDOW (w->parent), vchild, p->window);
-                      WSET (XWINDOW (w->parent), hchild, Qnil);
+                      wset_vchild (XWINDOW (w->parent), p->window);
+                      wset_hchild (XWINDOW (w->parent), Qnil);
                     }
                   else
                     {
-                      WSET (XWINDOW (w->parent), hchild, p->window);
-                      WSET (XWINDOW (w->parent), vchild, Qnil);
+                      wset_hchild (XWINDOW (w->parent), p->window);
+                      wset_vchild (XWINDOW (w->parent), Qnil);
                     }
                 }
             }
@@ -5574,25 +5708,25 @@ the return value is nil.  Otherwise the value is t.  */)
           /* If we squirreled away the buffer in the window's height,
              restore it now.  */
           if (BUFFERP (w->total_lines))
-            WSET (w, buffer, w->total_lines);
-          WSET (w, left_col, p->left_col);
-          WSET (w, top_line, p->top_line);
-          WSET (w, total_cols, p->total_cols);
-          WSET (w, total_lines, p->total_lines);
-          WSET (w, normal_cols, p->normal_cols);
-          WSET (w, normal_lines, p->normal_lines);
+            wset_buffer (w, w->total_lines);
+          wset_left_col (w, p->left_col);
+          wset_top_line (w, p->top_line);
+          wset_total_cols (w, p->total_cols);
+          wset_total_lines (w, p->total_lines);
+          wset_normal_cols (w, p->normal_cols);
+          wset_normal_lines (w, p->normal_lines);
           w->hscroll = XFASTINT (p->hscroll);
           w->min_hscroll = XFASTINT (p->min_hscroll);
-          WSET (w, display_table, p->display_table);
-          WSET (w, left_margin_cols, p->left_margin_cols);
-          WSET (w, right_margin_cols, p->right_margin_cols);
-          WSET (w, left_fringe_width, p->left_fringe_width);
-          WSET (w, right_fringe_width, p->right_fringe_width);
+          wset_display_table (w, p->display_table);
+          wset_left_margin_cols (w, p->left_margin_cols);
+          wset_right_margin_cols (w, p->right_margin_cols);
+          wset_left_fringe_width (w, p->left_fringe_width);
+          wset_right_fringe_width (w, p->right_fringe_width);
           w->fringes_outside_margins = !NILP (p->fringes_outside_margins);
-          WSET (w, scroll_bar_width, p->scroll_bar_width);
-          WSET (w, vertical_scroll_bar_type, p->vertical_scroll_bar_type);
-          WSET (w, dedicated, p->dedicated);
-          WSET (w, combination_limit, p->combination_limit);
+          wset_scroll_bar_width (w, p->scroll_bar_width);
+          wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type);
+          wset_dedicated (w, p->dedicated);
+          wset_combination_limit (w, p->combination_limit);
           /* Restore any window parameters that have been saved.
              Parameters that have not been saved are left alone.  */
           for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem))
@@ -5621,24 +5755,24 @@ the return value is nil.  Otherwise the value is t.  */)
           /* Reinstall the saved buffer and pointers into it.  */
           if (NILP (p->buffer))
             /* An internal window.  */
-            WSET (w, buffer, p->buffer);
+            wset_buffer (w, p->buffer);
           else if (!NILP (BVAR (XBUFFER (p->buffer), name)))
             /* If saved buffer is alive, install it.  */
             {
-              WSET (w, buffer, p->buffer);
-               w->start_at_line_beg = !NILP (p->start_at_line_beg);
-               set_marker_restricted (w->start, p->start, w->buffer);
-               set_marker_restricted (w->pointm, p->pointm,
-                                      w->buffer);
-               Fset_marker (BVAR (XBUFFER (w->buffer), mark),
-                            p->mark, w->buffer);
-
-               /* As documented in Fcurrent_window_configuration, don't
-                  restore the location of point in the buffer which was
-                  current when the window configuration was recorded.  */
-               if (!EQ (p->buffer, new_current_buffer)
-                   && XBUFFER (p->buffer) == current_buffer)
-                 Fgoto_char (w->pointm);
+              wset_buffer (w, p->buffer);
+              w->start_at_line_beg = !NILP (p->start_at_line_beg);
+              set_marker_restricted (w->start, p->start, w->buffer);
+              set_marker_restricted (w->pointm, p->pointm,
+                                     w->buffer);
+              Fset_marker (BVAR (XBUFFER (w->buffer), mark),
+                           p->mark, w->buffer);
+
+              /* As documented in Fcurrent_window_configuration, don't
+                 restore the location of point in the buffer which was
+                 current when the window configuration was recorded.  */
+              if (!EQ (p->buffer, new_current_buffer)
+                  && XBUFFER (p->buffer) == current_buffer)
+                Fgoto_char (w->pointm);
              }
            else if (!NILP (w->buffer)
                     && !NILP (BVAR (XBUFFER (w->buffer), name)))
@@ -5650,7 +5784,7 @@ the return value is nil.  Otherwise the value is t.  */)
                  set_marker_restricted (w->start, make_number (0),
                                         w->buffer);
                if (XMARKER (w->pointm)->buffer == 0)
-                 set_marker_restricted_both 
+                 set_marker_restricted_both
                    (w->pointm, w->buffer,
                     BUF_PT (XBUFFER (w->buffer)),
                     BUF_PT_BYTE (XBUFFER (w->buffer)));
@@ -5659,7 +5793,8 @@ the return value is nil.  Otherwise the value is t.  */)
            else if (STRINGP (auto_buffer_name =
                              Fwindow_parameter (window, Qauto_buffer_name))
                     && SCHARS (auto_buffer_name) != 0
-                    && !NILP (WSET (w, buffer, Fget_buffer_create (auto_buffer_name))))
+                    && (wset_buffer (w, Fget_buffer_create (auto_buffer_name)),
+                        !NILP (w->buffer)))
             {
               set_marker_restricted (w->start,
                                      make_number (0), w->buffer);
@@ -5674,7 +5809,7 @@ the return value is nil.  Otherwise the value is t.  */)
               avoid showing an unimportant buffer and, if necessary, to
               recreate *scratch* in the course (part of Juanma's bs-show
               scenario from March 2011).  */
-              WSET (w, buffer, other_buffer_safely (Fcurrent_buffer ()));
+              wset_buffer (w, other_buffer_safely (Fcurrent_buffer ()));
               /* This will set the markers to beginning of visible
                  range.  */
               set_marker_restricted (w->start,
@@ -5686,11 +5821,11 @@ the return value is nil.  Otherwise the value is t.  */)
                 /* Record this window as dead.  */
                 dead_windows = Fcons (window, dead_windows);
               /* Make sure window is no more dedicated.  */
-              WSET (w, dedicated, Qnil);
+              wset_dedicated (w, Qnil);
             }
         }
 
-      FSET (f, root_window, data->root_window);
+      fset_root_window (f, data->root_window);
       /* Arrange *not* to restore point in the buffer that was
          current when the window configuration was saved.  */
       if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer))
@@ -5786,24 +5921,25 @@ delete_all_child_windows (Lisp_Object window)
     /* Delete WINDOW's siblings (we traverse postorderly).  */
     delete_all_child_windows (w->next);
 
-  WSET (w, total_lines, w->buffer);       /* See Fset_window_configuration for excuse.  */
+  /* See Fset_window_configuration for excuse.  */
+  wset_total_lines (w, w->buffer);
 
   if (!NILP (w->vchild))
     {
       delete_all_child_windows (w->vchild);
-      WSET (w, vchild, Qnil);
+      wset_vchild (w, Qnil);
     }
   else if (!NILP (w->hchild))
     {
       delete_all_child_windows (w->hchild);
-      WSET (w, hchild, Qnil);
+      wset_hchild (w, Qnil);
     }
   else if (!NILP (w->buffer))
     {
       unshow_buffer (w);
       unchain_marker (XMARKER (w->pointm));
       unchain_marker (XMARKER (w->start));
-      WSET (w, buffer, Qnil);
+      wset_buffer (w, Qnil);
     }
 
   Vwindow_list = Qnil;
@@ -5895,7 +6031,7 @@ save_window_save (Lisp_Object window, struct Lisp_Vector *vector, int i)
       p = SAVED_WINDOW_N (vector, i);
       w = XWINDOW (window);
 
-      WSET (w, temslot, make_number (i)); i++;
+      wset_temslot (w, make_number (i)); i++;
       p->window = window;
       p->buffer = w->buffer;
       p->left_col = w->left_col;
@@ -6098,8 +6234,8 @@ means no margin.  */)
   if (!EQ (w->left_margin_cols, left_width)
       || !EQ (w->right_margin_cols, right_width))
     {
-      WSET (w, left_margin_cols, left_width);
-      WSET (w, right_margin_cols, right_width);
+      wset_left_margin_cols (w, left_width);
+      wset_right_margin_cols (w, right_width);
 
       adjust_window_margins (w);
 
@@ -6160,14 +6296,14 @@ display marginal areas and the text area.  */)
           || !EQ (w->right_fringe_width, right_width)
           || w->fringes_outside_margins != outside))
     {
-      WSET (w, left_fringe_width, left_width);
-      WSET (w, right_fringe_width, right_width);
+      wset_left_fringe_width (w, left_width);
+      wset_right_fringe_width (w, right_width);
       w->fringes_outside_margins = outside;
 
       adjust_window_margins (w);
 
       clear_glyph_matrix (w->current_matrix);
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
 
       ++windows_or_buffers_changed;
       adjust_glyphs (XFRAME (WINDOW_FRAME (w)));
@@ -6232,13 +6368,13 @@ Fourth parameter HORIZONTAL-TYPE is currently unused.  */)
   if (!EQ (w->scroll_bar_width, width)
       || !EQ (w->vertical_scroll_bar_type, vertical_type))
     {
-      WSET (w, scroll_bar_width, width);
-      WSET (w, vertical_scroll_bar_type, vertical_type);
+      wset_scroll_bar_width (w, width);
+      wset_vertical_scroll_bar_type (w, vertical_type);
 
       adjust_window_margins (w);
 
       clear_glyph_matrix (w->current_matrix);
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
 
       ++windows_or_buffers_changed;
       adjust_glyphs (XFRAME (WINDOW_FRAME (w)));
diff --git a/src/window.h b/src/window.h
index 77b31dafd8b..28b9678b667 100644
--- a/src/window.h
+++ b/src/window.h
@@ -22,6 +22,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "dispextern.h"
 
+INLINE_HEADER_BEGIN
+#ifndef WINDOW_INLINE
+# define WINDOW_INLINE INLINE
+#endif
+
 extern Lisp_Object Qleft, Qright;
 
 /* Windows are allocated as if they were vectors, but then the
@@ -86,10 +91,6 @@ struct cursor_pos
   int hpos, vpos;
 };
 
-/* Most code should use this macro to set Lisp fields in struct window.  */
-
-#define WSET(w, field, value) ((w)->field = (value))
-
 struct window
   {
     /* This is for Lisp; the terminal code does not refer to it.  */
@@ -348,6 +349,75 @@ struct window
     ptrdiff_t window_end_bytepos;
 };
 
+/* Most code should use these functions to set Lisp fields in struct
+   window.  */
+WINDOW_INLINE void
+wset_buffer (struct window *w, Lisp_Object val)
+{
+  w->buffer = val;
+}
+WINDOW_INLINE void
+wset_frame (struct window *w, Lisp_Object val)
+{
+  w->frame = val;
+}
+WINDOW_INLINE void
+wset_left_col (struct window *w, Lisp_Object val)
+{
+  w->left_col = val;
+}
+WINDOW_INLINE void
+wset_next (struct window *w, Lisp_Object val)
+{
+  w->next = val;
+}
+WINDOW_INLINE void
+wset_prev (struct window *w, Lisp_Object val)
+{
+  w->prev = val;
+}
+WINDOW_INLINE void
+wset_redisplay_end_trigger (struct window *w, Lisp_Object val)
+{
+  w->redisplay_end_trigger = val;
+}
+WINDOW_INLINE void
+wset_top_line (struct window *w, Lisp_Object val)
+{
+  w->top_line = val;
+}
+WINDOW_INLINE void
+wset_total_cols (struct window *w, Lisp_Object val)
+{
+  w->total_cols = val;
+}
+WINDOW_INLINE void
+wset_total_lines (struct window *w, Lisp_Object val)
+{
+  w->total_lines = val;
+}
+WINDOW_INLINE void
+wset_vertical_scroll_bar (struct window *w, Lisp_Object val)
+{
+  w->vertical_scroll_bar = val;
+}
+WINDOW_INLINE void
+wset_window_end_pos (struct window *w, Lisp_Object val)
+{
+  w->window_end_pos = val;
+}
+WINDOW_INLINE void
+wset_window_end_valid (struct window *w, Lisp_Object val)
+{
+  w->window_end_valid = val;
+}
+WINDOW_INLINE void
+wset_window_end_vpos (struct window *w, Lisp_Object val)
+{
+  w->window_end_vpos = val;
+}
+
+
 /* 1 if W is a minibuffer window.  */
 
 #define MINI_WINDOW_P(W)        ((W)->mini)
@@ -916,4 +986,6 @@ extern void init_window (void);
 extern void syms_of_window (void);
 extern void keys_of_window (void);
 
+INLINE_HEADER_END
+
 #endif /* not WINDOW_H_INCLUDED */
diff --git a/src/xdisp.c b/src/xdisp.c
index 4cd95606041..f5edb4b16f8 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -365,6 +365,28 @@ Lisp_Object Qcenter;
 static Lisp_Object Qmargin, Qpointer;
 static Lisp_Object Qline_height;
 
+/* These setters are used only in this file, so they can be private.  */
+static inline void
+wset_base_line_number (struct window *w, Lisp_Object val)
+{
+  w->base_line_number = val;
+}
+static inline void
+wset_base_line_pos (struct window *w, Lisp_Object val)
+{
+  w->base_line_pos = val;
+}
+static inline void
+wset_column_number_displayed (struct window *w, Lisp_Object val)
+{
+  w->column_number_displayed = val;
+}
+static inline void
+wset_region_showing (struct window *w, Lisp_Object val)
+{
+  w->region_showing = val;
+}
+
 #ifdef HAVE_WINDOW_SYSTEM
 
 /* Test if overflow newline into fringe.  Called with iterator IT
@@ -4047,38 +4069,54 @@ static enum prop_handled
 handle_invisible_prop (struct it *it)
 {
   enum prop_handled handled = HANDLED_NORMALLY;
+  int invis_p;
+  Lisp_Object prop;
 
   if (STRINGP (it->string))
     {
-      Lisp_Object prop, end_charpos, limit, charpos;
+      Lisp_Object end_charpos, limit, charpos;
 
       /* Get the value of the invisible text property at the
          current position.  Value will be nil if there is no such
          property.  */
       charpos = make_number (IT_STRING_CHARPOS (*it));
       prop = Fget_text_property (charpos, Qinvisible, it->string);
+      invis_p = TEXT_PROP_MEANS_INVISIBLE (prop);
 
-      if (!NILP (prop)
-          && IT_STRING_CHARPOS (*it) < it->end_charpos)
+      if (invis_p && IT_STRING_CHARPOS (*it) < it->end_charpos)
         {
-          ptrdiff_t endpos;
+          /* Record whether we have to display an ellipsis for the
+             invisible text.  */
+          int display_ellipsis_p = (invis_p == 2);
+          ptrdiff_t len, endpos;
 
           handled = HANDLED_RECOMPUTE_PROPS;
 
-          /* Get the position at which the next change of the
-             invisible text property can be found in IT->string.
-             Value will be nil if the property value is the same for
-             all the rest of IT->string.  */
-          XSETINT (limit, SCHARS (it->string));
-          end_charpos = Fnext_single_property_change (charpos, Qinvisible,
-                                                      it->string, limit);
-
-          /* Text at current position is invisible.  The next
-             change in the property is at position end_charpos.
-             Move IT's current position to that position.  */
-          if (INTEGERP (end_charpos)
-              && (endpos = XFASTINT (end_charpos)) < XFASTINT (limit))
+          /* Get the position at which the next visible text can be
+             found in IT->string, if any.  */
+          endpos = len = SCHARS (it->string);
+          XSETINT (limit, len);
+          do
+            {
+              end_charpos = Fnext_single_property_change (charpos, Qinvisible,
+                                                          it->string, limit);
+              if (INTEGERP (end_charpos))
+                {
+                  endpos = XFASTINT (end_charpos);
+                  prop = Fget_text_property (end_charpos, Qinvisible, it->string);
+                  invis_p = TEXT_PROP_MEANS_INVISIBLE (prop);
+                  if (invis_p == 2)
+                    display_ellipsis_p = 1;
+                }
+            }
+          while (invis_p && endpos < len);
+
+          if (display_ellipsis_p)
+            it->ellipsis_p = 1;
+
+          if (endpos < len)
             {
+              /* Text at END_CHARPOS is visible.  Move IT there.  */
               struct text_pos old;
               ptrdiff_t oldpos;
 
@@ -4114,7 +4152,8 @@ handle_invisible_prop (struct it *it)
               /* The rest of the string is invisible.  If this is an
                  overlay string, proceed with the next overlay string
                  or whatever comes and return a character from there.  */
-              if (it->current.overlay_string_index >= 0)
+              if (it->current.overlay_string_index >= 0
+                  && !display_ellipsis_p)
                 {
                   next_overlay_string (it);
                   /* Don't check for overlay strings when we just
@@ -4131,9 +4170,8 @@ handle_invisible_prop (struct it *it)
     }
   else
     {
-      int invis_p;
       ptrdiff_t newpos, next_stop, start_charpos, tem;
-      Lisp_Object pos, prop, overlay;
+      Lisp_Object pos, overlay;
 
       /* First of all, is there invisible text at this position?  */
       tem = start_charpos = IT_CHARPOS (*it);
@@ -6010,7 +6048,7 @@ back_to_previous_visible_line_start (struct it *it)
       {
         Lisp_Object prop;
         prop = Fget_char_property (make_number (IT_CHARPOS (*it) - 1),
-                                     Qinvisible, it->window);
+                                   Qinvisible, it->window);
         if (TEXT_PROP_MEANS_INVISIBLE (prop))
           continue;
       }
@@ -7981,7 +8019,7 @@ run_redisplay_end_trigger_hook (struct it *it)
 
   /* Since we are *trying* to run these functions, don't try to run
      them again, even if they get an error.  */
-  WSET (it->w, redisplay_end_trigger, Qnil);
+  wset_redisplay_end_trigger (it->w, Qnil);
   Frun_hook_with_args (3, args);
 
   /* Notice if it changed the face of the character we are on.  */
@@ -9318,7 +9356,7 @@ message_dolog (const char *m, ptrdiff_t nbytes, int nlflag, int multibyte)
       old_deactivate_mark = Vdeactivate_mark;
       oldbuf = current_buffer;
       Fset_buffer (Fget_buffer_create (Vmessages_buffer_name));
-      BSET (current_buffer, undo_list, Qt);
+      bset_undo_list (current_buffer, Qt);
 
       oldpoint = message_dolog_marker1;
       set_marker_restricted (oldpoint, make_number (PT), Qnil);
@@ -9880,7 +9918,7 @@ ensure_echo_area_buffers (void)
         old_buffer = echo_buffer[i];
         echo_buffer[i] = Fget_buffer_create
           (make_formatted_string (name, " *Echo Area %d*", i));
-        BSET (XBUFFER (echo_buffer[i]), truncate_lines, Qnil);
+        bset_truncate_lines (XBUFFER (echo_buffer[i]), Qnil);
         /* to force word wrap in echo area -
            it was decided to postpone this*/
         /* XBUFFER (echo_buffer[i])->word_wrap = Qt; */
@@ -9969,12 +10007,12 @@ with_echo_area_buffer (struct window *w, int which,
   set_buffer_internal_1 (XBUFFER (buffer));
   if (w)
     {
-      WSET (w, buffer, buffer);
+      wset_buffer (w, buffer);
       set_marker_both (w->pointm, buffer, BEG, BEG_BYTE);
     }
 
-  BSET (current_buffer, undo_list, Qt);
-  BSET (current_buffer, read_only, Qnil);
+  bset_undo_list (current_buffer, Qt);
+  bset_read_only (current_buffer, Qnil);
   specbind (Qinhibit_read_only, Qt);
   specbind (Qinhibit_modification_hooks, Qt);
 
@@ -10054,7 +10092,7 @@ unwind_with_echo_area_buffer (Lisp_Object vector)
       charpos = AREF (vector, 5);
       bytepos = AREF (vector, 6);
 
-      WSET (w, buffer, buffer);
+      wset_buffer (w, buffer);
       set_marker_both (w->pointm, buffer,
                        XFASTINT (charpos), XFASTINT (bytepos));
     }
@@ -10087,7 +10125,7 @@ setup_echo_area_for_printing (int multibyte_p)
 
       /* Switch to that buffer and clear it.  */
       set_buffer_internal (XBUFFER (echo_area_buffer[0]));
-      BSET (current_buffer, truncate_lines, Qnil);
+      bset_truncate_lines (current_buffer, Qnil);
 
       if (Z > BEG)
         {
@@ -10130,7 +10168,7 @@ setup_echo_area_for_printing (int multibyte_p)
         {
           /* Someone switched buffers between print requests.  */
           set_buffer_internal (XBUFFER (echo_area_buffer[0]));
-          BSET (current_buffer, truncate_lines, Qnil);
+          bset_truncate_lines (current_buffer, Qnil);
         }
     }
 }
@@ -10442,11 +10480,10 @@ current_message_1 (ptrdiff_t a1, Lisp_Object a2, ptrdiff_t a3, ptrdiff_t a4)
    empty.  This is a relatively infrequent operation, so it's not
    worth optimizing.  */
 
-int
+bool
 push_message (void)
 {
-  Lisp_Object msg;
-  msg = current_message ();
+  Lisp_Object msg = current_message ();
   Vmessage_stack = Fcons (msg, Vmessage_stack);
   return STRINGP (msg);
 }
@@ -10582,9 +10619,9 @@ set_message_1 (ptrdiff_t a1, Lisp_Object a2, ptrdiff_t nbytes, ptrdiff_t multiby
       != !NILP (BVAR (current_buffer, enable_multibyte_characters)))
     Fset_buffer_multibyte (message_enable_multibyte ? Qt : Qnil);
 
-  BSET (current_buffer, truncate_lines, message_truncate_lines ? Qt : Qnil);
+  bset_truncate_lines (current_buffer, message_truncate_lines ? Qt : Qnil);
   if (!NILP (BVAR (current_buffer, bidi_display_reordering)))
-    BSET (current_buffer, bidi_paragraph_direction, Qleft_to_right);
+    bset_bidi_paragraph_direction (current_buffer, Qleft_to_right);
 
   /* Insert new message at BEG.  */
   TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
@@ -11274,7 +11311,7 @@ update_menu_bar (struct frame *f, int save_match_data, int hooks_run)
             }
 
           XSETFRAME (Vmenu_updating_frame, f);
-          FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+          fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
 
           /* Redisplay the menu bar in case we changed it.  */
 #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) \
@@ -11487,7 +11524,7 @@ update_tool_bar (struct frame *f, int save_match_data)
                  may access f->tool_bar_items.  Make sure we update both
                  variables within BLOCK_INPUT so no such event interrupts.  */
               BLOCK_INPUT;
-              FSET (f, tool_bar_items, new_tool_bar);
+              fset_tool_bar_items (f, new_tool_bar);
               f->n_tool_bar_items = new_n_tool_bar;
               w->update_mode_line = 1;
               UNBLOCK_INPUT;
@@ -11529,8 +11566,8 @@ build_desired_tool_bar_string (struct frame *f)
 
   /* Reuse f->desired_tool_bar_string, if possible.  */
   if (size < size_needed || NILP (f->desired_tool_bar_string))
-    FSET (f, desired_tool_bar_string,
-          Fmake_string (make_number (size_needed), make_number (' ')));
+    fset_desired_tool_bar_string
+      (f, Fmake_string (make_number (size_needed), make_number (' ')));
   else
     {
       props = list4 (Qdisplay, Qnil, Qmenu_item, Qnil);
@@ -13266,12 +13303,12 @@ redisplay_internal (void)
               if ((it.glyph_row - 1)->displays_text_p)
                 {
                   if (XFASTINT (w->window_end_vpos) < this_line_vpos)
-                    WSET (w, window_end_vpos, make_number (this_line_vpos));
+                    wset_window_end_vpos (w, make_number (this_line_vpos));
                 }
               else if (XFASTINT (w->window_end_vpos) == this_line_vpos
                        && this_line_vpos > 0)
-                WSET (w, window_end_vpos, make_number (this_line_vpos - 1));
-              WSET (w, window_end_valid, Qnil);
+                wset_window_end_vpos (w, make_number (this_line_vpos - 1));
+              wset_window_end_valid (w, Qnil);
 
               /* Update hint: No need to try to scroll in update_window.  */
               w->desired_matrix->no_scrolling_p = 1;
@@ -13737,7 +13774,7 @@ mark_window_display_accurate_1 (struct window *w, int accurate_p)
 
   if (accurate_p)
     {
-      WSET (w, window_end_valid, w->buffer);
+      wset_window_end_valid (w, w->buffer);
       w->update_mode_line = 0;
     }
 }
@@ -14845,7 +14882,7 @@ try_scrolling (Lisp_Object window, int just_this_one_p,
       if (!just_this_one_p
           || current_buffer->clip_changed
           || BEG_UNCHANGED < CHARPOS (startp))
-        WSET (w, base_line_number, Qnil);
+        wset_base_line_number (w, Qnil);
 
       /* If cursor ends up on a partially visible line,
          treat that as being off the bottom of the screen.  */
@@ -15470,7 +15507,7 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
       if (XMARKER (w->start)->buffer == current_buffer)
         compute_window_start_on_continuation_line (w);
 
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
     }
 
   /* Some sanity checks.  */
@@ -15581,11 +15618,11 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
 
       w->force_start = 0;
       w->vscroll = 0;
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
 
       /* Forget any recorded base line for line number display.  */
       if (!buffer_unchanged_p)
-        WSET (w, base_line_number, Qnil);
+        wset_base_line_number (w, Qnil);
 
       /* Redisplay the mode line.  Select the buffer properly for that.
          Also, run the hook window-scroll-functions
@@ -15799,7 +15836,7 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
               || current_buffer->clip_changed
               || BEG_UNCHANGED < CHARPOS (startp))
             /* Forget any recorded base line for line number display.  */
-            WSET (w, base_line_number, Qnil);
+            wset_base_line_number (w, Qnil);
 
           if (!cursor_row_fully_visible_p (w, 1, 0))
             {
@@ -15870,7 +15907,7 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
 
   /* Forget any previously recorded base line for line number display.  */
   if (!buffer_unchanged_p)
-    WSET (w, base_line_number, Qnil);
+    wset_base_line_number (w, Qnil);
 
   /* Determine the window start relative to point.  */
   init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
@@ -16128,8 +16165,8 @@ redisplay_window (Lisp_Object window, int just_this_one_p)
   if (!line_number_displayed
       && !BUFFERP (w->base_line_pos))
     {
-      WSET (w, base_line_pos, Qnil);
-      WSET (w, base_line_number, Qnil);
+      wset_base_line_pos (w, Qnil);
+      wset_base_line_number (w, Qnil);
     }
 
  finish_menu_bars:
@@ -16306,10 +16343,10 @@ try_window (Lisp_Object window, struct text_pos pos, int flags)
       eassert (MATRIX_ROW_DISPLAYS_TEXT_P (last_text_row));
       w->window_end_bytepos
         = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-      WSET (w, window_end_pos,
-            make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
-      WSET (w, window_end_vpos,
-            make_number (MATRIX_ROW_VPOS (last_text_row, w->desired_matrix)));
+      wset_window_end_pos
+        (w, make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
+      wset_window_end_vpos
+        (w, make_number (MATRIX_ROW_VPOS (last_text_row, w->desired_matrix)));
       eassert
         (MATRIX_ROW (w->desired_matrix,
                      XFASTINT (w->window_end_vpos))->displays_text_p);
@@ -16317,12 +16354,12 @@ try_window (Lisp_Object window, struct text_pos pos, int flags)
   else
     {
       w->window_end_bytepos = Z_BYTE - ZV_BYTE;
-      WSET (w, window_end_pos, make_number (Z - ZV));
-      WSET (w, window_end_vpos, make_number (0));
+      wset_window_end_pos (w, make_number (Z - ZV));
+      wset_window_end_vpos (w, make_number (0));
     }
 
   /* But that is not valid info until redisplay finishes.  */
-  WSET (w, window_end_valid, Qnil);
+  wset_window_end_valid (w, Qnil);
   return 1;
 }
 
@@ -16546,28 +16583,31 @@ try_window_reusing_current_matrix (struct window *w)
         {
           w->window_end_bytepos
             = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_reused_text_row);
-          WSET (w, window_end_pos,
-                make_number (Z - MATRIX_ROW_END_CHARPOS (last_reused_text_row)));
-          WSET (w, window_end_vpos,
-                make_number (MATRIX_ROW_VPOS (last_reused_text_row, w->current_matrix)));
+          wset_window_end_pos
+            (w, make_number (Z
+                             - MATRIX_ROW_END_CHARPOS (last_reused_text_row)));
+          wset_window_end_vpos
+            (w, make_number (MATRIX_ROW_VPOS (last_reused_text_row,
+                                              w->current_matrix)));
         }
       else if (last_text_row)
         {
           w->window_end_bytepos
             = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-          WSET (w, window_end_pos,
-                make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
-          WSET (w, window_end_vpos,
-                make_number (MATRIX_ROW_VPOS (last_text_row, w->desired_matrix)));
+          wset_window_end_pos
+            (w, make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
+          wset_window_end_vpos
+            (w, make_number (MATRIX_ROW_VPOS (last_text_row,
+                                              w->desired_matrix)));
         }
       else
         {
           /* This window must be completely empty.  */
           w->window_end_bytepos = Z_BYTE - ZV_BYTE;
-          WSET (w, window_end_pos, make_number (Z - ZV));
-          WSET (w, window_end_vpos, make_number (0));
+          wset_window_end_pos (w, make_number (Z - ZV));
+          wset_window_end_vpos (w, make_number (0));
         }
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
 
       /* Update hint: don't try scrolling again in update_window.  */
       w->desired_matrix->no_scrolling_p = 1;
@@ -16748,18 +16788,19 @@ try_window_reusing_current_matrix (struct window *w)
         {
           w->window_end_bytepos
             = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-          WSET (w, window_end_pos,
-                make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
-          WSET (w, window_end_vpos,
-                make_number (MATRIX_ROW_VPOS (last_text_row, w->desired_matrix)));
+          wset_window_end_pos
+            (w, make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
+          wset_window_end_vpos
+            (w, make_number (MATRIX_ROW_VPOS (last_text_row,
+                                              w->desired_matrix)));
         }
       else
         {
-          WSET (w, window_end_vpos,
-                make_number (XFASTINT (w->window_end_vpos) - nrows_scrolled));
+          wset_window_end_vpos
+            (w, make_number (XFASTINT (w->window_end_vpos) - nrows_scrolled));
         }
 
-      WSET (w, window_end_valid, Qnil);
+      wset_window_end_valid (w, Qnil);
       w->desired_matrix->no_scrolling_p = 1;
 
 #ifdef GLYPH_DEBUG
@@ -17331,8 +17372,8 @@ try_window_id (struct window *w)
         {
           /* We have to compute the window end anew since text
              could have been added/removed after it.  */
-          WSET (w, window_end_pos,
-               make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
+          wset_window_end_pos
+            (w, make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
           w->window_end_bytepos
             = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
 
@@ -17766,21 +17807,22 @@ try_window_id (struct window *w)
                                            first_unchanged_at_end_row);
       eassert (row && MATRIX_ROW_DISPLAYS_TEXT_P (row));
 
-      WSET (w, window_end_pos, make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
+      wset_window_end_pos (w, make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
       w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
-      WSET (w, window_end_vpos,
-            make_number (MATRIX_ROW_VPOS (row, w->current_matrix)));
+      wset_window_end_vpos
+        (w, make_number (MATRIX_ROW_VPOS (row, w->current_matrix)));
       eassert (w->window_end_bytepos >= 0);
       IF_DEBUG (debug_method_add (w, "A"));
     }
   else if (last_text_row_at_end)
     {
-      WSET (w, window_end_pos,
-            make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row_at_end)));
+      wset_window_end_pos
+        (w, make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row_at_end)));
       w->window_end_bytepos
         = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row_at_end);
-      WSET (w, window_end_vpos,
-            make_number (MATRIX_ROW_VPOS (last_text_row_at_end, desired_matrix)));
+      wset_window_end_vpos
+        (w, make_number (MATRIX_ROW_VPOS (last_text_row_at_end,
+                                          desired_matrix)));
       eassert (w->window_end_bytepos >= 0);
       IF_DEBUG (debug_method_add (w, "B"));
     }
@@ -17789,12 +17831,12 @@ try_window_id (struct window *w)
       /* We have displayed either to the end of the window or at the
          end of the window, i.e. the last row with text is to be found
          in the desired matrix.  */
-      WSET (w, window_end_pos,
-            make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
+      wset_window_end_pos
+        (w, make_number (Z - MATRIX_ROW_END_CHARPOS (last_text_row)));
       w->window_end_bytepos
         = Z_BYTE - MATRIX_ROW_END_BYTEPOS (last_text_row);
-      WSET (w, window_end_vpos,
-            make_number (MATRIX_ROW_VPOS (last_text_row, desired_matrix)));
+      wset_window_end_vpos
+        (w, make_number (MATRIX_ROW_VPOS (last_text_row, desired_matrix)));
       eassert (w->window_end_bytepos >= 0);
     }
   else if (first_unchanged_at_end_row == NULL
@@ -17822,8 +17864,8 @@ try_window_id (struct window *w)
         }
 
       eassert (row != NULL);
-      WSET (w, window_end_vpos, make_number (vpos + 1));
-      WSET (w, window_end_pos, make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
+      wset_window_end_vpos (w, make_number (vpos + 1));
+      wset_window_end_pos (w, make_number (Z - MATRIX_ROW_END_CHARPOS (row)));
       w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
       eassert (w->window_end_bytepos >= 0);
       IF_DEBUG (debug_method_add (w, "C"));
@@ -17835,7 +17877,7 @@ try_window_id (struct window *w)
             debug_end_vpos = XFASTINT (w->window_end_vpos));
 
   /* Record that display has not been completed.  */
-  WSET (w, window_end_valid, Qnil);
+  wset_window_end_valid (w, Qnil);
   w->desired_matrix->no_scrolling_p = 1;
   return 3;
 
@@ -19248,7 +19290,7 @@ display_line (struct it *it)
     }
 
   /* Is IT->w showing the region?  */
-  WSET (it->w, region_showing, it->region_beg_charpos > 0 ? Qt : Qnil);
+  wset_region_showing (it->w, it->region_beg_charpos > 0 ? Qt : Qnil);
 
   /* Clear the result glyph row and enable it.  */
   prepare_desired_row (row);
@@ -20252,7 +20294,7 @@ display_mode_lines (struct window *w)
 
   /* These will be set while the mode line specs are processed.  */
   line_number_displayed = 0;
-  WSET (w, column_number_displayed, Qnil);
+  wset_column_number_displayed (w, Qnil);
 
   if (WINDOW_WANTS_MODELINE_P (w))
     {
@@ -21388,7 +21430,7 @@ decode_mode_spec (struct window *w, register int c, int field_width,
       else
         {
           ptrdiff_t col = current_column ();
-          WSET (w, column_number_displayed, make_number (col));
+          wset_column_number_displayed (w, make_number (col));
           pint2str (decode_mode_spec_buf, field_width, col);
           return decode_mode_spec_buf;
         }
@@ -21451,14 +21493,14 @@ decode_mode_spec (struct window *w, register int c, int field_width,
           goto no_value;
         /* But do forget it, if the window shows a different buffer now.  */
         else if (BUFFERP (w->base_line_pos))
-          WSET (w, base_line_pos, Qnil);
+          wset_base_line_pos (w, Qnil);
 
         /* If the buffer is very big, don't waste time.  */
         if (INTEGERP (Vline_number_display_limit)
             && BUF_ZV (b) - BUF_BEGV (b) > XINT (Vline_number_display_limit))
           {
-            WSET (w, base_line_pos, Qnil);
-            WSET (w, base_line_number, Qnil);
+            wset_base_line_pos (w, Qnil);
+            wset_base_line_number (w, Qnil);
             goto no_value;
           }
 
@@ -21490,8 +21532,8 @@ decode_mode_spec (struct window *w, register int c, int field_width,
            go back past it.  */
         if (startpos == BUF_BEGV (b))
           {
-            WSET (w, base_line_number, make_number (topline));
-            WSET (w, base_line_pos, make_number (BUF_BEGV (b)));
+            wset_base_line_number (w, make_number (topline));
+            wset_base_line_pos (w, make_number (BUF_BEGV (b)));
           }
         else if (nlines < height + 25 || nlines > height * 3 + 50
                  || linepos == BUF_BEGV (b))
@@ -21517,13 +21559,13 @@ decode_mode_spec (struct window *w, register int c, int field_width,
                give up on line numbers for this window.  */
             if (position == limit_byte && limit == startpos - distance)
               {
-                WSET (w, base_line_pos, w->buffer);
-                WSET (w, base_line_number, Qnil);
+                wset_base_line_pos (w, w->buffer);
+                wset_base_line_number (w, Qnil);
                 goto no_value;
               }
 
-            WSET (w, base_line_number, make_number (topline - nlines));
-            WSET (w, base_line_pos, make_number (BYTE_TO_CHAR (position)));
+            wset_base_line_number (w, make_number (topline - nlines));
+            wset_base_line_pos (w, make_number (BYTE_TO_CHAR (position)));
           }
 
         /* Now count lines from the start pos to point.  */
@@ -29288,12 +29330,13 @@ init_xdisp (void)
 
       echo_area_window = minibuf_window;
 
-      WSET (r, top_line, make_number (FRAME_TOP_MARGIN (f)));
-      WSET (r, total_lines, make_number (FRAME_LINES (f) - 1 - FRAME_TOP_MARGIN (f)));
-      WSET (r, total_cols, make_number (FRAME_COLS (f)));
-      WSET (m, top_line, make_number (FRAME_LINES (f) - 1));
-      WSET (m, total_lines, make_number (1));
-      WSET (m, total_cols, make_number (FRAME_COLS (f)));
+      wset_top_line (r, make_number (FRAME_TOP_MARGIN (f)));
+      wset_total_lines
+        (r, make_number (FRAME_LINES (f) - 1 - FRAME_TOP_MARGIN (f)));
+      wset_total_cols (r, make_number (FRAME_COLS (f)));
+      wset_top_line (m, make_number (FRAME_LINES (f) - 1));
+      wset_total_lines (m, make_number (1));
+      wset_total_cols (m, make_number (FRAME_COLS (f)));
 
       scratch_glyph_row.glyphs[TEXT_AREA] = scratch_glyphs;
       scratch_glyph_row.glyphs[TEXT_AREA + 1]
diff --git a/src/xfaces.c b/src/xfaces.c
index 8c6542ee725..820d764d0a8 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -2695,7 +2695,7 @@ Value is a vector of face attributes.  */)
           lface = Fmake_vector (make_number (LFACE_VECTOR_SIZE),
                                 Qunspecified);
           ASET (lface, 0, Qface);
-          FSET (f, face_alist, Fcons (Fcons (face, lface), f->face_alist));
+          fset_face_alist (f, Fcons (Fcons (face, lface), f->face_alist));
         }
       else
         for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
@@ -2781,8 +2781,7 @@ The value is TO.  */)
       copy = Finternal_make_lisp_face (to, new_frame);
     }
 
-  memcpy (XVECTOR (copy)->contents, XVECTOR (lface)->contents,
-          LFACE_VECTOR_SIZE * word_size);
+  vcopy (copy, 0, XVECTOR (lface)->contents, LFACE_VECTOR_SIZE);
 
   /* Changing a named face means that all realized faces depending on
      that face are invalid.  Since we cannot tell which realized faces
@@ -3831,9 +3830,9 @@ Default face attributes override any local face attributes.  */)
   gvec = XVECTOR (global_lface)->contents;
   for (i = 1; i < LFACE_VECTOR_SIZE; ++i)
     if (IGNORE_DEFFACE_P (gvec[i]))
-      lvec[i] = Qunspecified;
+      ASET (local_lface, i, Qunspecified);
     else if (! UNSPECIFIEDP (gvec[i]))
-      lvec[i] = gvec[i];
+      ASET (local_lface, i, AREF (global_lface, i));
 
   /* If the default face was changed, update the face cache and the
      `font' frame parameter.  */
@@ -3850,7 +3849,7 @@ Default face attributes override any local face attributes.  */)
              the previously-cached vector.  */
           memcpy (attrs, oldface->lface, sizeof attrs);
           merge_face_vectors (f, lvec, attrs, 0);
-          memcpy (lvec, attrs, sizeof attrs);
+          vcopy (local_lface, 0, attrs, LFACE_VECTOR_SIZE);
           newface = realize_face (c, lvec, DEFAULT_FACE_ID);
 
           if ((! UNSPECIFIEDP (gvec[LFACE_FAMILY_INDEX])
diff --git a/src/xfns.c b/src/xfns.c
index a9d22e7d3c6..90b54d12345 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -658,7 +658,7 @@ x_set_tool_bar_position (struct frame *f,
 
 #ifdef USE_GTK
   if (xg_change_toolbar_position (f, new_value))
-    FSET (f, tool_bar_position, new_value);
+    fset_tool_bar_position (f, new_value);
 #endif
 }
 
@@ -1145,7 +1145,7 @@ x_set_icon_name (struct frame *f, Lisp_Object arg, Lisp_Object oldval)
   else if (!NILP (arg) || NILP (oldval))
     return;
 
-  FSET (f, icon_name, arg);
+  fset_icon_name (f, arg);
 
   if (f->output_data.x->icon_bitmap != 0)
     return;
@@ -1636,7 +1636,7 @@ x_set_name (struct frame *f, Lisp_Object name, int explicit)
   if (! NILP (Fstring_equal (name, f->name)))
     return;
 
-  FSET (f, name, name);
+  fset_name (f, name);
 
   /* For setting the frame title, the title parameter should override
      the name parameter.  */
@@ -1676,7 +1676,7 @@ x_set_title (struct frame *f, Lisp_Object name, Lisp_Object old_name)
 
   update_mode_lines = 1;
 
-  FSET (f, title, name);
+  fset_title (f, name);
 
   if (NILP (name))
     name = f->name;
@@ -2565,7 +2565,7 @@ x_window (struct frame *f, long window_prompting, int minibuffer_only)
 
     f->explicit_name = 0;
     name = f->name;
-    FSET (f, name, Qnil);
+    fset_name (f, Qnil);
     x_set_name (f, name, explicit);
   }
 
@@ -2708,7 +2708,7 @@ x_window (struct frame *f)
 
     f->explicit_name = 0;
     name = f->name;
-    FSET (f, name, Qnil);
+    fset_name (f, Qnil);
     x_set_name (f, name, explicit);
   }
 
@@ -3128,11 +3128,11 @@ This function is an internal primitive--use `make-frame' instead.  */)
   f->output_data.x->scroll_bar_bottom_shadow_pixel = -1;
 #endif /* USE_TOOLKIT_SCROLL_BARS */
 
-  FSET (f, icon_name,
-        x_get_arg (dpyinfo, parms, Qicon_name, "iconName", "Title",
-                   RES_TYPE_STRING));
+  fset_icon_name (f,
+                  x_get_arg (dpyinfo, parms, Qicon_name, "iconName", "Title",
+                             RES_TYPE_STRING));
   if (! STRINGP (f->icon_name))
-    FSET (f, icon_name, Qnil);
+    fset_icon_name (f, Qnil);
 
   FRAME_X_DISPLAY_INFO (f) = dpyinfo;
 
@@ -3189,12 +3189,12 @@ This function is an internal primitive--use `make-frame' instead.  */)
      be set.  */
   if (EQ (name, Qunbound) || NILP (name))
     {
-      FSET (f, name, build_string (dpyinfo->x_id_name));
+      fset_name (f, build_string (dpyinfo->x_id_name));
       f->explicit_name = 0;
     }
   else
     {
-      FSET (f, name, name);
+      fset_name (f, name);
       f->explicit_name = 1;
       /* use the frame's title when getting resources for this frame.  */
       specbind (Qx_resource_name, name);
@@ -3455,13 +3455,13 @@ This function is an internal primitive--use `make-frame' instead.  */)
   if (FRAME_HAS_MINIBUF_P (f)
       && (!FRAMEP (KVAR (kb, Vdefault_minibuffer_frame))
           || !FRAME_LIVE_P (XFRAME (KVAR (kb, Vdefault_minibuffer_frame)))))
-    KSET (kb, Vdefault_minibuffer_frame, frame);
+    kset_default_minibuffer_frame (kb, frame);
 
   /* All remaining specified parameters, which have not been "used"
      by x_get_arg and friends, now go in the misc. alist of the frame.  */
   for (tem = parms; CONSP (tem); tem = XCDR (tem))
     if (CONSP (XCAR (tem)) && !NILP (XCAR (XCAR (tem))))
-      FSET (f, param_alist, Fcons (XCAR (tem), f->param_alist));
+      fset_param_alist (f, Fcons (XCAR (tem), f->param_alist));
 
   UNGCPRO;
 
@@ -4590,7 +4590,7 @@ x_create_tip_frame (struct x_display_info *dpyinfo,
   set_window_buffer (FRAME_ROOT_WINDOW (f), buffer, 0, 0);
   old_buffer = current_buffer;
   set_buffer_internal_1 (XBUFFER (buffer));
-  BSET (current_buffer, truncate_lines, Qnil);
+  bset_truncate_lines (current_buffer, Qnil);
   specbind (Qinhibit_read_only, Qt);
   specbind (Qinhibit_modification_hooks, Qt);
   Ferase_buffer ();
@@ -4616,7 +4616,7 @@ x_create_tip_frame (struct x_display_info *dpyinfo,
   f->output_data.x->scroll_bar_top_shadow_pixel = -1;
   f->output_data.x->scroll_bar_bottom_shadow_pixel = -1;
 #endif /* USE_TOOLKIT_SCROLL_BARS */
-  FSET (f, icon_name, Qnil);
+  fset_icon_name (f, Qnil);
   FRAME_X_DISPLAY_INFO (f) = dpyinfo;
   f->output_data.x->parent_desc = FRAME_X_DISPLAY_INFO (f)->root_window;
   f->output_data.x->explicit_parent = 0;
@@ -4658,12 +4658,12 @@ x_create_tip_frame (struct x_display_info *dpyinfo,
      be set.  */
   if (EQ (name, Qunbound) || NILP (name))
     {
-      FSET (f, name, build_string (dpyinfo->x_id_name));
+      fset_name (f, build_string (dpyinfo->x_id_name));
       f->explicit_name = 0;
     }
   else
     {
-      FSET (f, name, name);
+      fset_name (f, name);
       f->explicit_name = 1;
       /* use the frame's title when getting resources for this frame.  */
       specbind (Qx_resource_name, name);
@@ -5064,20 +5064,20 @@ Text larger than the specified size is clipped.  */)
 
   /* Set up the frame's root window.  */
   w = XWINDOW (FRAME_ROOT_WINDOW (f));
-  WSET (w, left_col, make_number (0));
-  WSET (w, top_line, make_number (0));
+  wset_left_col (w, make_number (0));
+  wset_top_line (w, make_number (0));
 
   if (CONSP (Vx_max_tooltip_size)
       && RANGED_INTEGERP (1, XCAR (Vx_max_tooltip_size), INT_MAX)
       && RANGED_INTEGERP (1, XCDR (Vx_max_tooltip_size), INT_MAX))
     {
-      WSET (w, total_cols, XCAR (Vx_max_tooltip_size));
-      WSET (w, total_lines, XCDR (Vx_max_tooltip_size));
+      wset_total_cols (w, XCAR (Vx_max_tooltip_size));
+      wset_total_lines (w, XCDR (Vx_max_tooltip_size));
     }
   else
     {
-      WSET (w, total_cols, make_number (80));
-      WSET (w, total_lines, make_number (40));
+      wset_total_cols (w, make_number (80));
+      wset_total_lines (w, make_number (40));
     }
 
   FRAME_TOTAL_COLS (f) = XINT (w->total_cols);
@@ -5087,7 +5087,7 @@ Text larger than the specified size is clipped.  */)
   /* Display the tooltip text in a temporary buffer.  */
   old_buffer = current_buffer;
   set_buffer_internal_1 (XBUFFER (XWINDOW (FRAME_ROOT_WINDOW (f))->buffer));
-  BSET (current_buffer, truncate_lines, Qnil);
+  bset_truncate_lines (current_buffer, Qnil);
   clear_glyph_matrix (w->desired_matrix);
   clear_glyph_matrix (w->current_matrix);
   SET_TEXT_POS (pos, BEGV, BEGV_BYTE);
@@ -5147,7 +5147,7 @@ Text larger than the specified size is clipped.  */)
       /* w->total_cols and FRAME_TOTAL_COLS want the width in columns,
          not in pixels.  */
       width /= WINDOW_FRAME_COLUMN_WIDTH (w);
-      WSET (w, total_cols, make_number (width));
+      wset_total_cols (w, make_number (width));
       FRAME_TOTAL_COLS (f) = width;
       adjust_glyphs (f);
       clear_glyph_matrix (w->desired_matrix);
diff --git a/src/xfont.c b/src/xfont.c
index 072bce7bb0a..cbb24622ae9 100644
--- a/src/xfont.c
+++ b/src/xfont.c
@@ -390,7 +390,7 @@ xfont_list_pattern (Display *display, const char *pattern,
       Lisp_Object scripts = Qnil;
 
       for (i = 0; i < ASIZE (xfont_scratch_props); i++)
-        props[i] = Qnil;
+        ASET (xfont_scratch_props, i, Qnil);
       for (i = 0; i < num_fonts; i++)
         indices[i] = names[i];
       qsort (indices, num_fonts, sizeof (char *), compare_font_names);
@@ -467,9 +467,9 @@ xfont_list_pattern (Display *display, const char *pattern,
                       word_size * 7)
               || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7]))
             {
-              memcpy (props, aref_addr (entity, FONT_FOUNDRY_INDEX),
-                      word_size * 7);
-              props[7] = AREF (entity, FONT_SPACING_INDEX);
+              vcopy (xfont_scratch_props, 0,
+                     aref_addr (entity, FONT_FOUNDRY_INDEX), 7);
+              ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX));
               scripts = xfont_supported_scripts (display, indices[i],
                                                  xfont_scratch_props, encoding);
             }
diff --git a/src/xmenu.c b/src/xmenu.c
index ab790094f85..54a7849218a 100644
--- a/src/xmenu.c
+++ b/src/xmenu.c
@@ -1008,7 +1008,7 @@ set_frame_menubar (FRAME_PTR f, int first_time, int deep_p)
       if (! NILP (Vlucid_menu_bar_dirty_flag))
         call0 (Qrecompute_lucid_menubar);
       safe_run_hooks (Qmenu_bar_update_hook);
-      FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+      fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
 
       items = FRAME_MENU_BAR_ITEMS (f);
 
@@ -1100,7 +1100,7 @@ set_frame_menubar (FRAME_PTR f, int first_time, int deep_p)
         }
 
       /* The menu items are different, so store them in the frame.  */
-      FSET (f, menu_bar_vector, menu_items);
+      fset_menu_bar_vector (f, menu_items);
       f->menu_bar_items_used = menu_items_used;
 
       /* This undoes save_menu_items.  */
@@ -1283,7 +1283,7 @@ initialize_frame_menubar (FRAME_PTR f)
 {
   /* This function is called before the first chance to redisplay
      the frame.  It has to be, so the frame will have the right size.  */
-  FSET (f, menu_bar_items, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
+  fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
   set_frame_menubar (f, 1, 1);
 }
 
diff --git a/src/xselect.c b/src/xselect.c
index 664b5f92a15..463bd6e37b0 100644
--- a/src/xselect.c
+++ b/src/xselect.c
@@ -353,8 +353,9 @@ x_own_selection (Lisp_Object selection_name, Lisp_Object selection_value,
                             INTEGER_TO_CONS (timestamp), frame);
     prev_value = LOCAL_SELECTION (selection_name, dpyinfo);
 
-    TSET (dpyinfo->terminal, Vselection_alist,
-          Fcons (selection_data, dpyinfo->terminal->Vselection_alist));
+    tset_selection_alist
+      (dpyinfo->terminal,
+       Fcons (selection_data, dpyinfo->terminal->Vselection_alist));
 
     /* If we already owned the selection, remove the old selection
        data.  Don't use Fdelq as that may QUIT.  */
@@ -989,7 +990,7 @@ x_handle_selection_clear (struct input_event *event)
             break;
           }
     }
-  TSET (dpyinfo->terminal, Vselection_alist, Vselection_alist);
+  tset_selection_alist (dpyinfo->terminal, Vselection_alist);
 
   /* Run the `x-lost-selection-functions' abnormal hook.  */
   {
@@ -1039,7 +1040,7 @@ x_clear_frame_selections (FRAME_PTR f)
       args[1] = Fcar (Fcar (t->Vselection_alist));
       Frun_hook_with_args (2, args);
 
-      TSET (t, Vselection_alist, XCDR (t->Vselection_alist));
+      tset_selection_alist (t, XCDR (t->Vselection_alist));
     }
 
   /* Delete elements after the beginning of Vselection_alist.  */
diff --git a/src/xterm.c b/src/xterm.c
index b1a73d07998..118c8767c23 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -3584,7 +3584,7 @@ x_frame_rehighlight (struct x_display_info *dpyinfo)
            : dpyinfo->x_focus_frame);
       if (! FRAME_LIVE_P (dpyinfo->x_highlight_frame))
         {
-          FSET (dpyinfo->x_focus_frame, focus_frame, Qnil);
+          fset_focus_frame (dpyinfo->x_focus_frame, Qnil);
           dpyinfo->x_highlight_frame = dpyinfo->x_focus_frame;
         }
     }
@@ -5018,7 +5018,7 @@ x_scroll_bar_create (struct window *w, int top, int left, int width, int height)
   bar->next = FRAME_SCROLL_BARS (f);
   bar->prev = Qnil;
   XSETVECTOR (barobj, bar);
-  FSET (f, scroll_bars, barobj);
+  fset_scroll_bars (f, barobj);
   if (!NILP (bar->next))
     XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
 
@@ -5181,7 +5181,7 @@ x_scroll_bar_remove (struct scroll_bar *bar)
 #endif
 
   /* Dissociate this scroll bar from its window.  */
-  WSET (XWINDOW (bar->window), vertical_scroll_bar, Qnil);
+  wset_vertical_scroll_bar (XWINDOW (bar->window), Qnil);
 
   UNBLOCK_INPUT;
 }
@@ -5395,7 +5395,7 @@ XTset_vertical_scroll_bar (struct window *w, int portion, int whole, int positio
 #endif /* not USE_TOOLKIT_SCROLL_BARS */
 
   XSETVECTOR (barobj, bar);
-  WSET (w, vertical_scroll_bar, barobj);
+  wset_vertical_scroll_bar (w, barobj);
 }
 
 
@@ -5419,12 +5419,12 @@ XTcondemn_scroll_bars (FRAME_PTR frame)
     {
       Lisp_Object bar;
       bar = FRAME_SCROLL_BARS (frame);
-      FSET (frame, scroll_bars, XSCROLL_BAR (bar)->next);
+      fset_scroll_bars (frame, XSCROLL_BAR (bar)->next);
       XSCROLL_BAR (bar)->next = FRAME_CONDEMNED_SCROLL_BARS (frame);
       XSCROLL_BAR (bar)->prev = Qnil;
       if (! NILP (FRAME_CONDEMNED_SCROLL_BARS (frame)))
         XSCROLL_BAR (FRAME_CONDEMNED_SCROLL_BARS (frame))->prev = bar;
-      FSET (frame, condemned_scroll_bars, bar);
+      fset_condemned_scroll_bars (frame, bar);
     }
 }
 
@@ -5456,7 +5456,7 @@ XTredeem_scroll_bar (struct window *window)
         return;
       else if (EQ (FRAME_CONDEMNED_SCROLL_BARS (f),
                    window->vertical_scroll_bar))
-        FSET (f, condemned_scroll_bars, bar->next);
+        fset_condemned_scroll_bars (f, bar->next);
       else
         /* If its prev pointer is nil, it must be at the front of
            one or the other!  */
@@ -5471,7 +5471,7 @@ XTredeem_scroll_bar (struct window *window)
   bar->next = FRAME_SCROLL_BARS (f);
   bar->prev = Qnil;
   XSETVECTOR (barobj, bar);
-  FSET (f, scroll_bars, barobj);
+  fset_scroll_bars (f, barobj);
   if (! NILP (bar->next))
     XSETVECTOR (XSCROLL_BAR (bar->next)->prev, bar);
 }
@@ -5488,7 +5488,7 @@ XTjudge_scroll_bars (FRAME_PTR f)
 
   /* Clear out the condemned list now so we won't try to process any
      more events on the hapless scroll bars.  */
-  FSET (f, condemned_scroll_bars, Qnil);
+  fset_condemned_scroll_bars (f, Qnil);
 
   for (; ! NILP (bar); bar = next)
     {
@@ -7834,7 +7834,7 @@ x_connection_closed (Display *dpy, const char *error_message)
       {
         /* Set this to t so that delete_frame won't get confused
            trying to find a replacement.  */
-        KSET (FRAME_KBOARD (XFRAME (frame)), Vdefault_minibuffer_frame, Qt);
+        kset_default_minibuffer_frame (FRAME_KBOARD (XFRAME (frame)), Qt);
         delete_frame (frame, Qnoelisp);
       }
 
@@ -10114,7 +10114,7 @@ x_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
       {
         terminal->kboard = xmalloc (sizeof *terminal->kboard);
         init_kboard (terminal->kboard);
-        KSET (terminal->kboard, Vwindow_system, Qx);
+        kset_window_system (terminal->kboard, Qx);
 
         /* Add the keyboard to the list before running Lisp code (via
            Qvendor_specific_keysyms below), since these are not traced
@@ -10136,9 +10136,10 @@ x_term_init (Lisp_Object display_name, char *xrm_option, char *resource_name)
             /* Temporarily hide the partially initialized terminal.  */
             terminal_list = terminal->next_terminal;
             UNBLOCK_INPUT;
-            KSET (terminal->kboard, Vsystem_key_alist,
-                  call1 (Qvendor_specific_keysyms,
-                         vendor ? build_string (vendor) : empty_unibyte_string));
+            kset_system_key_alist
+              (terminal->kboard,
+               call1 (Qvendor_specific_keysyms,
+                      vendor ? build_string (vendor) : empty_unibyte_string));
             BLOCK_INPUT;
             terminal->next_terminal = terminal_list;
             terminal_list = terminal;