(detect_coding_iso_2022): Ignore a coding category that

has no corresponding coding system.

2 files changed, 489 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 5ca21988aa9..41f2467664b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,490 @@
+2008-05-14  Kenichi Handa  <handa@m17n.org>
+
+        * coding.c (detect_coding_iso_2022): Ignore a coding category that
+        has no corresponding coding system.
+
+2008-05-14  Jason Rumney  <jasonr@gnu.org>
+
+        * font.h (struct font) [WINDOWSNT]: Remove codepage member.
+
+        * w32font.h (w32font_open_internal): Update declaration.
+
+        * w32font.c (w32font_open_internal): Change last argument from
+        w32font_info struct to font object.  Fill in font object from
+        font_entity.  Get Outline metrics if possible.  Use them to
+        calculate underline position and thickness.  Use xlfd name as name
+        property.  Don't set codepage.
+        (w32font_open): Pass font_object to w32font_open_internal.  Don't
+        update dpyinfo->smallest_font_height and
+        dpyinfo->smallest_char_width.
+        (w32font_draw): Use s->font.
+        (clear_cached_metrics): Don't clear non-existent blocks.
+
+        * w32term.c (w32_compute_glyph_string_overhangs): Don't compute if
+        font was not found.
+        (x_draw_glyph_string): Use underline position and thickness from
+        font.
+
+        * w32uniscribe.c (uniscribe_open): Pass font_object to
+        w32font_open_internal.
+
+2008-05-14  Kenichi Handa  <handa@m17n.org>
+
+        These changes are to delete all legacy font-handling codes, and
+        make Emacs use only font-backends.
+
+        * Makefile.in: Delete USE_FONT_BACKEND conditionals.
+        (frame.o, image.o, print.o): Depend on $(FONTSRC).
+
+        * makefile.w32-in (WIN32OBJ): Add w32reg.$(O), remove w32bdf.$(O).
+
+        * charset.h (Vcharset_non_preferred_head)
+        (Vcurrent_iso639_language): Extern them.
+
+        * charset.c (Vcharset_non_preferred_head): New variable.
+        (Vcurrent_iso639_language): New variable.
+        (syms_of_charset): Declare it as a Lisp variable.
+        (char_charset): Don't check non preferred charsets.  As a last
+        resort, return charset_unicode.
+        (Fset_charset_priority): Update Vcharset_non_preferred_head.
+
+        * composite.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+
+        * dispextern.h (struct glyph_string): Change type of `font' to
+        `struct font *'.
+        (struct glyph_string): New member underline_position and
+        underline_thickness.
+        (enum lface_attribute_index): Remove LFACE_AVGWIDTH_INDEX.
+        (struct face): Change type of `font' to `struct font *'.  Remove
+        members `font_name', `font_info_id'.
+        (per_char_metric, encode_char): Delete externs.
+        (calc_pixel_width_or_height): Adjust the prototype.
+
+        * emacs.c (enable_font_backend): Delete extern.
+        (main): Don't set enable_font_backend.  Don't check the command
+        line argument "-disable-font-backend".
+
+        * font.h (Qfont_spec, Qfont_entity, Qfont_object): Extern them.
+        (enum font_property_index): New members FONT_DPI_INDEX,
+        FONT_SPACING_INDEX, FONT_AVGWIDTH_INDEX, FONT_NAME_INDEX,
+        FONT_FULLNAME_INDEX, FONT_FILE_INDEX, FONT_FORMAT_INDEX,
+        FONT_OBJECT_MAX.  Delete FONT_FRAME_INDEX.
+        (FONT_WEIGHT_NUMERIC, FONT_SLANT_NUMERIC, FONT_WIDTH_NUMERIC)
+        (FONT_WEIGHT_SYMBOLIC, FONT_SLANT_SYMBOLIC, FONT_WIDTH_SYMBOLIC)
+        (FONT_WEIGHT_FOR_FACE, FONT_SLANT_FOR_FACE, FONT_WIDTH_FOR_FACE)
+        (FONT_WEIGHT_NAME_NUMERIC, FONT_SLANT_NAME_NUMERIC)
+        (FONT_WIDTH_NAME_NUMERIC, FONT_SET_STYLE): New macros.
+        (struct font_spec, struct font_entity): New structs.
+        (FONT_ENCODING_NOT_DECIDED): Moved from fontset.h.
+        (struct font): Many members from old "struct font_info" moved to
+        here.  Members font and entity deleted.
+        (FONT_SPEC_P, FONT_ENTITY_P, FONT_OBJECT_P, FONTP): Modified for
+        the new font-related objects.
+        (CHECK_FONT_SPEC, CHECK_FONT_ENTITY, CHECK_FONT_OBJECT)
+        (CHECK_FONT_GET_OBJECT): Likewise.
+        (XFONT_SPEC, XFONT_ENTITY, XFONT_OBJECT, XSETFONT): New macros.
+        (PT_PER_INCH, POINT_TO_PIXEL, PIXEL_TO_POINT): Moved from font.h.
+        (struct font_driver): New members case_sensitive anc check.  Type
+        of the member list and open changed.
+        (enable_font_backend, font_symbolic_weight, font_symbolic_slant)
+        (font_symbolic_width, font_find_object, font_get_spec)
+        (font_set_lface_from_name): Delete extern.
+        (Fcopy_font_spec, Fmerge_font_spec, Ffont_family_list): New
+        EXFUNs.
+
+        * font.c: Include <strings.h>.
+        (enable_font_backend): Delete it.
+        (Qfont_spec, Qfont_entity, Qfont_object): New variables.
+        (CHECK_VALIDATE_FONT_SPEC): Delete it.
+        (PT_PER_INCH, POINT_TO_PIXEL, PIXEL_TO_POINT): Moved to font.h.
+        (null_string): Delete it.
+        (null_vector): Make it static.
+        (font_family_alist): Delete it.
+        (Qnormal): Extern it.
+        (QCextra, QClanguage): Delete it.
+        (QClang, QCavgwidth, QCfont_entity, QCfc_unknown_spec): New
+        variables.
+        (font_make_spec, font_make_entity, font_make_object)
+        (font_intern_prop): Renamed from intern_downcase.  Don't downcase
+        the string.  Callers changed.
+        (font_pixel_size): Adjusted for the format change of font-related
+        objects.
+        (prop_name_to_numeric, prop_numeric_to_name): Delete them.
+        (font_style_to_value, font_style_symbolic): New function.
+        (build_font_family_alist): Delete it.
+        (font_registry_charsets): Use Fassoc_string instead of
+        assq_no_quit.
+        (font_prop_validate_symbol): Don't return null_string.
+        (font_prop_validate_style): Adjusted for the change of
+        style-related values in a font vector.
+        (font_property_table): Delete entries for QClangauge and
+        QCantialias, add entries for QCavgwidth.
+        (get_font_prop_index): Delete the 2nd argument FROM.
+        (font_prop_validate): Arguments changed.
+        (font_put_extra): Adjusted for the change of font-related objects.
+        (font_expand_wildcards, font_parse_xlfd, font_unparse_xlfd)
+        (font_parse_fcname, font_unparse_fcname)
+        (font_prepare_composition): Likewise.
+        (font_parse_family_registry): Renamed from font_merge_old_spec.
+        (otf_open): Delete the 1st arg entity.
+        (font_otf_capability): Adjusted for the above change.
+        (font_score): New arg alternate_families.  Adjusted for the change
+        of font-related objects.
+        (font_sort_entites): New arg best_only.
+        (font_symbolic_weight, font_symbolic_slant, font_symbolic_width):
+        Delete them.
+        (font_match_p): Check alternate families.
+        (font_find_object): Delete it.
+        (font_check_object): New function.
+        (font_clear_cache): Adjusted for the change of font-related
+        objects.
+        (font_delete_unmatched): New arg.
+        (font_list_entities): Call font_driver->list with a spec that
+        doesn't specify style-related properties.
+        (font_matching_entity): Arguments changed.  Caller changed.
+        (font_open_entity): Adjusted for the change of font-related
+        objects.
+        (font_close_object, font_has_char, font_encode_char)
+        (font_get_name, font_get_spec): Likewise.
+        (font_spec_from_name, font_clear_prop, font_update_lface): New
+        functions.
+        (font_find_for_lface, font_open_for_lface, font_load_for_lface):
+        (font_prepare_for_face, font_done_for_face, font_open_by_name)
+        (font_at): Adjusted for the change of font-related objects.
+        (font_range): New function.
+        (Ffontp, Ffont_spec, Ffont_get, Ffont_put, Flist_fonts)
+        (Ffont_xlfd_name): Adjusted for the change of font-related
+        objects.
+        (Fcopy_font_spec, Fmerge_font_spec): New function.
+        (Ffont_family_list): Renamed from list-families.
+        (Finternal_set_font_style_table): Arguments changed.
+        (Ffont_fill_gstring, Ffont_shape_text, Fopen_font)
+        (Ffont_drive_otf, Fquery_font, Ffont_match_p): Adjusted for the
+        change of font-related objects.
+        (syms_of_font): Delete "ifdef USE_FONT_BACKEND".  DEFSYM new
+        symboles.
+
+        * fontset.h (struct font_info): Delete it.  Most memnbers go to
+        struct font.
+        (FONT_ENCODING_NOT_DECIDED): Moved to font.h.
+        (enum FONT_SPEC_INDEX): Delete it.
+        (font_info, list_fonts_func, load_font_func, query_font_func)
+        (set_frame_fontset_func, find_ccl_program_func)
+        (get_font_repertory_func, new_fontset_from_font_name): Delete
+        externs.
+        (fontset_from_font_name): Extern it.
+        (FS_LOAD_FONT, FONT_INFO_ID, FONT_INFO_FROM_ID)
+        (FONT_INFO_FROM_FACE): Deleted.
+        (face_for_font): Adjust prototype.
+
+        * fontset.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+        (get_font_info_func, list_font_func, load_font_func)
+        (query_font_func, set_frame_fontset_func, find_ccl_program_func)
+        (get_font_repertory_func): Delete them.
+        (FONTSET_SPEC, FONT_DEF_NEW, FONT_DEF_SPEC, FONT_DEF_ENCODING)
+        (FONT_DEF_REPERTORY, RFONT_DEF_FACE, RFONT_DEF_SET_FACE)
+        (RFONT_DEF_FONT_DEF, RFONT_DEF_SPEC, RFONT_DEF_REPERTORY)
+        (RFONT_DEF_OBJECT, RFONT_DEF_SET_OBJECT, RFONT_DEF_SCORE)
+        (RFONT_DEF_SET_SCORE, RFONT_DEF_NEW): New macros.
+        (fontset_compare_rfontdef): New function.
+        (reorder_font_vector): Remove the argument CHARSET-ID.  Sort
+        ront-defs by qsort.  Adjusted for the change of font-group vector.
+        (load_font_get_repertory): Deleted.
+        (fontset_find_font): Use new macros to ref/set elements of
+        font-def and rfont-def.
+        (fontset_font): Fix the timing of remembering that no font for C.
+        (free_face_fontset): Do nothing if the face has no fontset.
+        (face_suitable_for_char_p): Use new macros to ref/set elements of
+        rfont-def.
+        (face_for_char): Likewise.  Call face_for_char with font_object.
+        (fs_load_font): Delete.  Delete #pragma surrounding it.
+        (fs_query_fontset): Use strcasecmp instead of strcmp.
+        (generate_ascii_font_name): Adjusted for the format change of
+        font-spec.
+        (Fset_fontset_font): Likewise.  Use new macros to set elements of
+        font-def.
+        (Fnew_fontset): Use font_unparse_xlfd to generate
+        FONTSET_ASCII (fontset).
+        (new_fontset_from_font_name): Deleted.
+        (fontset_from_font): Renamed from new_fontset_from_font.  Check if
+        a fontset is already created for the font.  FIx updating of
+        Vfontset_alias_alist.
+        (fontset_ascii_font): Deleted.
+        (Ffont_info): Adjusted for the format change of font-spec.
+        (Finternal_char_font): Likewise.
+        (Ffontset_info): Likewise.
+        (syms_of_fontset): Don't check load_font_func.
+
+        * fns.c (internal_equal): Handle PREV_FONT.
+
+        * frame.h: Delete USE_FONT_BACKEND conditional.
+
+        * frame.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+        (x_set_font): Call x_new_font, not x_new_fontset2.
+        (x_set_font_backend): Use FRAME_FONT macro to check if a font is
+        already set for the frame.
+
+        * ftfont.c (ftfont_pattern_entity): Argument FRAME removed.  Make
+        a font-entity by font_make_entity.  Use font_intern_prop instead
+        of intern_downcase.  Use FONT_SET_STYLE to set a style-related
+        font property.  If a font is scalable, set avgwidth property to 0.
+        Set font-entity property by font_put_extra.
+        (ftfont_list_generic_family): Argument SPEC and REGISTRY removed.
+        (ffont_driver): Adjusted for the change of struct font_driver.
+        (ftfont_spec_pattern): New function.
+        (ftfont_list): Return a list, not vector.
+        (ftfont_match): Use ftfont_spec_pattern to get a pattern.
+        (ftfont_list_family): Don't downcase names.
+        (ftfont_free_entity): Deleted.
+        (ftfont_open): Return a font-ojbect.  Adjusted for the change of
+        struct font.  Get underline_thickness and underline_position from
+        font property.  Don't update dpyinfo->smallest_font_height and
+        dpyinfo->smallest_char_width.
+        (ftfont_close): Don't free `struct font'.
+        (ftfont_has_char): Adjusted for the format change of font-entity.
+        (ftfont_encode_char, ftfont_text_extents): Likewise.
+
+        * ftxfont.c (ftxfont_list): Return a list, not vector.
+        (ftxfont_open): Return a font-ojbect.  Adjusted for the change of
+        struct font.  Get underline_thickness and underline_position from
+        font property.  Don't update dpyinfo->smallest_font_height and
+        dpyinfo->smallest_char_width.
+        (ftxfont_close): Don't decrese FRAME_X_DISPLAY_INFO (f)->n_fonts.
+        (ftxfont_draw): Adjusted for the change of struct font.
+
+        * image.c (image_ascent): Don't include "charset.h".  Include
+        "character.h" and "font.h".
+
+        * lisp.h (enum pvec_type): New member PREV_FONT.
+        (Fassoc_string): EXFUN it.
+
+        * print.c: Include font.h.
+        (print_object): Handle font-related objects.
+
+        * xdisp.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+        (handle_auto_composed_prop): Do nothing if it->f is not on a
+        window system.  Check how many following characters can be
+        displayed by the same font.
+        (calc_pixel_width_or_height): Type of the 4th arg is changed to
+        'struct font *'.
+        (get_char_face_and_encoding): Assign the whole encoding task to
+        the `encode-char' method of a font driver.
+        (fill_composite_glyph_string): Adjusted for the change of `struct
+        face' and `struct glyph_string'.
+        (fill_glyph_string): Likewise.
+        (get_per_char_metric): Arguments changed.
+        (x_get_glyph_overhangs): Adjusted for the change of `struct face'
+        and `struct glyph_string'.
+        (produce_stretch_glyph, calc_line_height_property)
+        (x_produce_glyphs): Likewise.
+
+        * xfaces.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.  Use
+        FONT_XXX_NAME_NUMERIC instead of face_numeric_xxx.
+        (QCfoundry, QCadstyle, QCregistry, QCspacing, QCsize, QCavgwidth)
+        (Qp): Extern them.
+        (clear_font_table, load_face_font, xlfd_lookup_field_contents):
+        Deleted.
+        (struct font_name): Deleted.
+        (xlfd_numeric_value, xlfd_symbolic_value): Deleted.
+        (compare_fonts_by_sort_order): New function.
+        (xlfd_numeric_slant, xlfd_symbolic_slant, xlfd_numeric_weight)
+        (xlfd_symbolic_weight, xlfd_numeric_swidth, xlfd_symbolic_swidth):
+        Deleted.
+        (Fx_family_fonts): Use font_list_entities, and sort fonts by
+        compare_fonts_by_sort_order.
+        (Fx_font_family_list): Call Ffont_family_list.
+        (face_numeric_value, face_numeric_weight, face_numeric_slant)
+        (face_numeric_swidth, face_symbolic_value, face_symbolic_weight)
+        (face_symbolic_slant, face_symbolic_swidth)
+        (split_font_name_into_vector, build_font_name_from_vector)
+        (xlfd_fixed_p, xlfd_point_size, pixel_point_size)
+        (font_rescale_ratio, split_font_name, build_font_name)
+        (free_font_names, sort_fonts, x_face_list_fonts)
+        (face_font_available_p, sorted_font_list, cmp_font_names)
+        (font_list_1, concat_font_list, font_list, remove_duplicates):
+        Deleted.
+        (Fx_list_fonts): Use Ffont_list.
+        (LFACE_AVGWIDTH): Deleted.
+        (check_lface_attrs): Don't check LFACE_AVGWIDTH.  Check LFACE_FONT
+        by FONTP.
+        (lface_fully_specified_p): Don't check LFACE_AVGWIDTH.
+        (set_lface_from_font_name): Delete it.
+        (set_lface_from_font): Renamed from
+        set_lface_from_font_and_fontset.  Caller changed.  Don't set
+        LFACE_AVGWIDTH.  Use FONT_XXX_FOR_FACE to get a symbol suitable
+        for face.
+        (merge_face_vectors): Copy font-spec if necessary.  Clear
+        properties of the font-spec if necessary.
+        (merge_face_ref): Clear properties of the font-spec if necessary.
+        (Finternal_set_lisp_face_attribute): Likewise.
+        (set_font_frame_param): Use font_load_for_lface to load a
+        font-object, and call Fmodify_frame_parameters with it.
+        (x_update_menu_appearance): Don't check LFACE_AVGWIDTH.  Get XLFD
+        font name by Ffont_xlfd_name.
+        (Finternal_lisp_face_attribute_values): Don't check QCweight,
+        QCslant, and QCwidth.
+        (Fface_font): Get a font name from font->props[FONT_NAME_INDEX].
+        (lface_same_font_attributes_p): Don't check LFACE_AVGWIDTH.
+        Compare fonts by EQ.
+        (lookup_non_ascii_face): Deleted.
+        (face_for_font): The 2nd argument changed.
+        (x_supports_face_attributes_p): Don't check LFACE_AVGWIDTH.  Check
+        atomic font properties by case insensitive.
+        (realize_non_ascii_face): Set face->overstrike correctly.
+        (realize_x_face): Likewise.  Check if LFACE_FONT is a font_object.
+        (dump_realized_face): Get font name from
+        font->props[FONT_NAME_INDEX].  Don't print font_info_id.
+
+        * xfns.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+        (xic_create_xfontset): Original code deleted and renamed from
+        xic_create_xfontset2.  Use FRAME_FONT, not FRAME_FONT_OBJECT.
+        (x_make_gc): Don't set GCFont in GCs.
+        (Fx_create_frame) [USE_LUCID]: Set xlwmenu_default_font to a font
+        opened by "fixed".
+        (syms_of_xfns): Don't set get_font_info_func, load_font_func,
+        find_ccl_program_func, query_font_func, set_frame_fontset_func,
+        get_font_repertory_func.
+
+        * xfont.c: Include <stdlib.h> and "ccl.h".
+        (struct xfont_info): New structure.
+        (xfont_query_font): Deleted.
+        (xfont_find_ccl_program): Renamed from x_find_ccl_program and
+        moved from xterm.c.
+        (xfont_driver): Adjusted for the change of struct font_driver.
+        (compare_font_names): New function.
+        (xfont_list_pattern): Sort font names case insensitively.  Make
+        font_entity by calling font_make_entity.  Avoid auto-scaled fonts.
+        (xfont_list): Return a list, not vector.
+        (xfont_match): If the font doesn't have QCname property, generate
+        a name from the other font properties.
+        (xfont_open): Return a font-ojbect.  Adjusted for the change of
+        struct font.  Get underline_thickness and underline_position from
+        font property.  Don't update dpyinfo->smallest_font_height and
+        dpyinfo->smallest_char_width.
+        (xfont_close): Don't free struct font.
+        (xfont_prepare_face): Adjusted for the change of struct font.
+        (xfont_done_face): Deleted.
+        (xfont_has_char): Adjusted for the change of struct font.
+        (xfont_encode_char, xfont_draw): Likewise.
+        (xfont_check): New function.
+
+        * xftfont.c (xftfont_list): Adjusted for the change of `list'
+        callback function.
+        (xftfont_match): Adjusted for the fontmat change of font-entity.
+        (xftfont_open): Adjusted for the format change of font-entity and
+        font-object.  Adjusted for the change of struct font.  Return a
+        font-object.  Don't update dpyinfo->smallest_font_height and
+        dpyinfo->smallest_char_width.
+        (xftfont_close): Block input while calling XftFontClose.
+        (xftfont_prepare_face): Don't block input while calling
+        xftfont_get_colors.  Adjusted for the change of struct font.
+        (xftfont_shape): Return value of error case fixed.
+
+        * xrdb.c (x_load_resources): Don't setup a fontset resource.
+
+        * xterm.h: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.
+        (FONT_WIDTH): Return (f)->max_width.
+        (struct x_display_info): Delete member `font'.
+        (x_list_fonts, x_get_font_info, x_load_font, x_query_font)
+        (x_find_ccl_program, x_get_font_repertory): Delete externs.
+        (struct x_output): Change type of `font' to `struct font *'.
+
+        * xterm.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.  Don't include
+        ccl.h.
+        (x_per_char_metric, x_encode_char): Deleted.
+        (x_set_cursor_gc, x_set_mouse_face_gc): Don't set GCFont.
+        (x_compute_glyph_string_overhangs): Adjusted for the change of
+        `struct face'
+        (x_draw_glyph_string_foreground)
+        (x_draw_composite_glyph_string_foreground): Likewise.
+        (x_draw_glyph_string): Likewise.  Use font->underline_position and
+        font->underline_thickness.
+        (x_new_font): Renamed from x_new_fontset2.
+        (x_new_fontset, x_get_font_info, x_list_fonts): Deleted.
+        (x_check_font): Call `check' method of a font driver.
+        (x_font_min_bounds, x_compute_min_glyph_bounds, x_load_font)
+        (x_query_font, x_get_font_repertory): Deleted.
+        (x_find_ccl_program): Renamed and moved to xfont.c.
+        (x_redisplay_interface): Adjusted for the change of `struct
+        redisplay_interface'.
+
+        * w32fns.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.  Surround non-used
+        code by "#ifdef OLD_FONT" and "endif".
+        (Fw32_select_font): Use FONT_COMPAT to get old font structure.
+
+        * w32font.h (struct w32font_info): New member.
+        (FONT_COMPAT): New macro.
+        (w32font_open_internal): Prototype adjusted.
+
+        * w32gui.h (XGCValues): Surround `XFontStruct *font' by "if
+        OLD_FONT" and "endif".
+
+        * w32font.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.
+        (w32font_open): Return a font-object.  Make a font-object by
+        font_make_object.  Adjusted for the change of struct w32font_info.
+        (w32font_close): Don't free struct font.  Adjusted for the change
+        of struct w32font_info.
+        (w32font_encode_char, w32font_text_extents, w32font_draw):
+        Adjusted for the change of struct w32font_info.
+        (w32font_draw): Likewise.
+        (w32font_list_internal): Return a list, not vector.
+        (w32font_open_internal): Change the 4th arg to font-object.
+        Adjusted for the change of struct w32font_info and font-object
+        format.
+        (add_font_name_to_list): Don't downcase names.
+        (w32_enumfont_pattern_entity): Make a font-entity by
+        font_make_entity.  Adjusted for the format change of font-entity.
+        Use FONT_SET_STYLE to set a style-related font property.  If a
+        font is scalable, set avgwidth property to 0.  Set font-entity
+        property by font_put_extra.
+        (font_matches_spec): Adjusted for the format change of
+        font-entity.
+        (w32_weight_table, w32_decode_weight): New variables.
+        (w32_encode_weight): New function.
+        (fill_in_logfont): Adjusted for the format change of font-spec.
+        (w32font_full_name): Use FONT_WEIGHT_SYMBOLIC to get a symbol
+        weight value.
+        (w32font_driver): Adjusted for the change of struct font_driver.
+
+        * w32term.h: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend. Surround non-used
+        code by "#ifdef OLD_FONT" and "endif".
+        (FONT_WIDTH, FONT_HEIGHT, FONT_BASE, FONT_DESCENT)
+        (FONT_AVG_WIDTH): Adjusted for the change of struct font.
+
+        * w32term.c: Throughout the file, delete all USE_FONT_BACKEND
+        conditionals.  Don't check enable_font_backend.  Delete all codes
+        used only when USE_FONT_BACKEND is not defined.  Surround non-used
+        code by "#ifdef OLD_FONT" and "endif".
+
+        * w32uniscribe.c: Delete USE_FONT_BACKEND conditional.
+        (uniscribe_open): Return value changed to font-object.  Adjusted
+        for the format change of font-object.
+        (uniscribe_otf_capability): Adjusted for the change of struct
+        font.
+        (add_opentype_font_name_to_list): Don't downcase names.
+        (uniscribe_font_driver): Adjusted for the change of struct
+        font_driver.
+
 2008-05-13  Chong Yidong  <cyd@stupidchicken.com>
 
         * dispnew.c (update_frame_1): Check if tty output is still valid
diff --git a/src/coding.c b/src/coding.c
index 81e8e4e10bc..4e8063543fe 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -2695,6 +2695,8 @@ detect_coding_iso_2022 (coding, detect_info)
       struct coding_system *this = &(coding_categories[i]);
       Lisp_Object attrs, val;
 
+      if (this->id < 0)
+        continue;
       attrs = CODING_ID_ATTRS (this->id);
       if (CODING_ISO_FLAGS (this) & CODING_ISO_FLAG_FULL_SUPPORT
           && ! EQ (CODING_ATTR_SAFE_CHARSETS (attrs), Viso_2022_charset_list))