merge master, fix conflicts

1 files changed, 196 insertions, 238 deletions

diff --git a/src/lisp.h b/src/lisp.h
index d416661e5f4..9e1f1501464 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -233,8 +233,8 @@ extern bool suppress_checking EXTERNALLY_VISIBLE;
 
    USE_LSB_TAG not only requires the least 3 bits of pointers returned by
    malloc to be 0 but also needs to be able to impose a mult-of-8 alignment
-   on the few static Lisp_Objects used: all the defsubr as well
-   as the two special buffers buffer_defaults and buffer_local_symbols.  */
+   on the few static Lisp_Objects used: lispsym, all the defsubr, and
+   the two special buffers buffer_defaults and buffer_local_symbols.  */
 
 enum Lisp_Bits
   {
@@ -354,9 +354,8 @@ error !;
 #define lisp_h_XCONS(a) \
    (eassert (CONSP (a)), (struct Lisp_Cons *) XUNTAG (a, Lisp_Cons))
 #define lisp_h_XHASH(a) XUINT (a)
-#define lisp_h_XPNTR(a) ((void *) (intptr_t) (XLI (a) & VALMASK))
-#define lisp_h_XSYMBOL(a) \
-   (eassert (SYMBOLP (a)), (struct Lisp_Symbol *) XUNTAG (a, Lisp_Symbol))
+#define lisp_h_XPNTR(a) \
+   (SYMBOLP (a) ? XSYMBOL (a) : (void *) ((intptr_t) (XLI (a) & VALMASK)))
 #ifndef GC_CHECK_CONS_LIST
 # define lisp_h_check_cons_list() ((void) 0)
 #endif
@@ -365,8 +364,12 @@ error !;
     XIL ((EMACS_INT) (((EMACS_UINT) (n) << INTTYPEBITS) + Lisp_Int0))
 # define lisp_h_XFASTINT(a) XINT (a)
 # define lisp_h_XINT(a) (XLI (a) >> INTTYPEBITS)
+# define lisp_h_XSYMBOL(a) \
+    (eassert (SYMBOLP (a)), \
+     (struct Lisp_Symbol *) ((uintptr_t) XLI (a) - Lisp_Symbol \
+                             + (char *) lispsym))
 # define lisp_h_XTYPE(a) ((enum Lisp_Type) (XLI (a) & ~VALMASK))
-# define lisp_h_XUNTAG(a, type) ((void *) (XLI (a) - (type)))
+# define lisp_h_XUNTAG(a, type) ((void *) (intptr_t) (XLI (a) - (type)))
 #endif
 
 /* When compiling via gcc -O0, define the key operations as macros, as
@@ -398,7 +401,6 @@ error !;
 # define XCONS(a) lisp_h_XCONS (a)
 # define XHASH(a) lisp_h_XHASH (a)
 # define XPNTR(a) lisp_h_XPNTR (a)
-# define XSYMBOL(a) lisp_h_XSYMBOL (a)
 # ifndef GC_CHECK_CONS_LIST
 #  define check_cons_list() lisp_h_check_cons_list ()
 # endif
@@ -406,6 +408,7 @@ error !;
 #  define make_number(n) lisp_h_make_number (n)
 #  define XFASTINT(a) lisp_h_XFASTINT (a)
 #  define XINT(a) lisp_h_XINT (a)
+#  define XSYMBOL(a) lisp_h_XSYMBOL (a)
 #  define XTYPE(a) lisp_h_XTYPE (a)
 #  define XUNTAG(a, type) lisp_h_XUNTAG (a, type)
 # endif
@@ -447,20 +450,20 @@ error !;
 
 enum Lisp_Type
   {
-    /* Integer.  XINT (obj) is the integer value.  */
-    Lisp_Int0 = 0,
-    Lisp_Int1 = USE_LSB_TAG ? 1 << INTTYPEBITS : 1,
-
     /* Symbol.  XSYMBOL (object) points to a struct Lisp_Symbol.  */
-    Lisp_Symbol = 2,
+    Lisp_Symbol = 0,
 
     /* Miscellaneous.  XMISC (object) points to a union Lisp_Misc,
        whose first member indicates the subtype.  */
-    Lisp_Misc = 3,
+    Lisp_Misc = 1,
+
+    /* Integer.  XINT (obj) is the integer value.  */
+    Lisp_Int0 = 2,
+    Lisp_Int1 = USE_LSB_TAG ? 6 : 3,
 
     /* String.  XSTRING (object) points to a struct Lisp_String.
        The length of the string, and its contents, are stored therein.  */
-    Lisp_String = USE_LSB_TAG ? 1 : 1 << INTTYPEBITS,
+    Lisp_String = 4,
 
     /* Vector of Lisp objects, or something resembling it.
        XVECTOR (object) points to a struct Lisp_Vector, which contains
@@ -469,7 +472,7 @@ enum Lisp_Type
     Lisp_Vectorlike = 5,
 
     /* Cons.  XCONS (object) points to a struct Lisp_Cons.  */
-    Lisp_Cons = 6,
+    Lisp_Cons = USE_LSB_TAG ? 3 : 6,
 
     Lisp_Float = 7
   };
@@ -562,7 +565,7 @@ enum Lisp_Fwd_Type
 
 typedef struct { EMACS_INT i; } Lisp_Object;
 
-#define LISP_INITIALLY_ZERO {0}
+#define LISP_INITIALLY(i) {i}
 
 #undef CHECK_LISP_OBJECT_TYPE
 enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = true };
@@ -571,9 +574,11 @@ enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = true };
 /* If a struct type is not wanted, define Lisp_Object as just a number.  */
 
 typedef EMACS_INT Lisp_Object;
-#define LISP_INITIALLY_ZERO 0
+#define LISP_INITIALLY(i) (i)
 enum CHECK_LISP_OBJECT_TYPE { CHECK_LISP_OBJECT_TYPE = false };
 #endif /* CHECK_LISP_OBJECT_TYPE */
+
+#define LISP_INITIALLY_ZERO LISP_INITIALLY (0)
 
 /* Forward declarations.  */
 
@@ -604,18 +609,15 @@ INLINE bool (SYMBOLP) (Lisp_Object);
 INLINE bool (VECTORLIKEP) (Lisp_Object);
 INLINE bool WINDOWP (Lisp_Object);
 INLINE struct Lisp_Save_Value *XSAVE_VALUE (Lisp_Object);
+INLINE struct Lisp_Symbol *(XSYMBOL) (Lisp_Object);
+INLINE enum Lisp_Type (XTYPE) (Lisp_Object);
+INLINE void *(XUNTAG) (Lisp_Object, int);
 
 /* Defined in chartab.c.  */
 extern Lisp_Object char_table_ref (Lisp_Object, int);
 extern void char_table_set (Lisp_Object, int, Lisp_Object);
 
 /* Defined in data.c.  */
-extern Lisp_Object Qarrayp, Qbufferp, Qbuffer_or_string_p, Qchar_table_p;
-extern Lisp_Object Qconsp, Qfloatp, Qintegerp, Qlambda, Qlistp, Qmarkerp, Qnil;
-extern Lisp_Object Qnumberp, Qstringp, Qsymbolp, Qt, Qvectorp;
-extern Lisp_Object Qbool_vector_p;
-extern Lisp_Object Qvector_or_char_table_p, Qwholenump;
-extern Lisp_Object Qwindow;
 extern _Noreturn Lisp_Object wrong_type_argument (Lisp_Object, Lisp_Object);
 extern _Noreturn void wrong_choice (Lisp_Object, Lisp_Object);
 
@@ -625,22 +627,122 @@ extern bool might_dump;
    Used during startup to detect startup of dumped Emacs.  */
 extern bool initialized;
 
-/* Defined in eval.c.  */
-extern Lisp_Object Qautoload;
-
 /* Defined in floatfns.c.  */
 extern double extract_float (Lisp_Object);
 
-/* Defined in process.c.  */
-extern Lisp_Object Qprocessp;
+
+/* Interned state of a symbol.  */
+
+enum symbol_interned
+{
+  SYMBOL_UNINTERNED = 0,
+  SYMBOL_INTERNED = 1,
+  SYMBOL_INTERNED_IN_INITIAL_OBARRAY = 2
+};
 
-/* Defined in window.c.  */
-extern Lisp_Object Qwindowp;
+enum symbol_redirect
+{
+  SYMBOL_PLAINVAL  = 4,
+  SYMBOL_VARALIAS  = 1,
+  SYMBOL_LOCALIZED = 2,
+  SYMBOL_FORWARDED = 3
+};
+
+struct Lisp_Symbol
+{
+  bool_bf gcmarkbit : 1;
+
+  /* Indicates where the value can be found:
+     0 : it's a plain var, the value is in the `value' field.
+     1 : it's a varalias, the value is really in the `alias' symbol.
+     2 : it's a localized var, the value is in the `blv' object.
+     3 : it's a forwarding variable, the value is in `forward'.  */
+  ENUM_BF (symbol_redirect) redirect : 3;
+
+  /* Non-zero means symbol is constant, i.e. changing its value
+     should signal an error.  If the value is 3, then the var
+     can be changed, but only by `defconst'.  */
+  unsigned constant : 2;
+
+  /* Interned state of the symbol.  This is an enumerator from
+     enum symbol_interned.  */
+  unsigned interned : 2;
+
+  /* True means that this variable has been explicitly declared
+     special (with `defvar' etc), and shouldn't be lexically bound.  */
+  bool_bf declared_special : 1;
+
+  /* True if pointed to from purespace and hence can't be GC'd.  */
+  bool_bf pinned : 1;
+
+  /* The symbol's name, as a Lisp string.  */
+  Lisp_Object name;
+
+  /* Value of the symbol or Qunbound if unbound.  Which alternative of the
+     union is used depends on the `redirect' field above.  */
+  union {
+    Lisp_Object value;
+    struct Lisp_Symbol *alias;
+    struct Lisp_Buffer_Local_Value *blv;
+    union Lisp_Fwd *fwd;
+  } val;
+
+  /* Function value of the symbol or Qnil if not fboundp.  */
+  Lisp_Object function;
+
+  /* The symbol's property list.  */
+  Lisp_Object plist;
+
+  /* Next symbol in obarray bucket, if the symbol is interned.  */
+  struct Lisp_Symbol *next;
+};
+
+/* Declare a Lisp-callable function.  The MAXARGS parameter has the same
+   meaning as in the DEFUN macro, and is used to construct a prototype.  */
+/* We can use the same trick as in the DEFUN macro to generate the
+   appropriate prototype.  */
+#define EXFUN(fnname, maxargs) \
+  extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs
+
+/* Note that the weird token-substitution semantics of ANSI C makes
+   this work for MANY and UNEVALLED.  */
+#define DEFUN_ARGS_MANY         (ptrdiff_t, Lisp_Object *)
+#define DEFUN_ARGS_UNEVALLED    (Lisp_Object)
+#define DEFUN_ARGS_0    (void)
+#define DEFUN_ARGS_1    (Lisp_Object)
+#define DEFUN_ARGS_2    (Lisp_Object, Lisp_Object)
+#define DEFUN_ARGS_3    (Lisp_Object, Lisp_Object, Lisp_Object)
+#define DEFUN_ARGS_4    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
+#define DEFUN_ARGS_5    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
+                         Lisp_Object)
+#define DEFUN_ARGS_6    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
+                         Lisp_Object, Lisp_Object)
+#define DEFUN_ARGS_7    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
+                         Lisp_Object, Lisp_Object, Lisp_Object)
+#define DEFUN_ARGS_8    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
+                         Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
+
+/* Yield an integer that contains TAG along with PTR.  */
+#define TAG_PTR(tag, ptr) \
+  ((USE_LSB_TAG ? (tag) : (EMACS_UINT) (tag) << VALBITS) + (uintptr_t) (ptr))
+
+/* Yield an integer that contains a symbol tag along with OFFSET.
+   OFFSET should be the offset in bytes from 'lispsym' to the symbol.  */
+#define TAG_SYMOFFSET(offset)                               \
+  TAG_PTR (Lisp_Symbol,                                     \
+           ((uintptr_t) (offset) >> (USE_LSB_TAG ? 0 : GCTYPEBITS)))
+
+/* Declare extern constants for Lisp symbols.  These can be helpful
+   when using a debugger like GDB, on older platforms where the debug
+   format does not represent C macros.  */
+#define DEFINE_LISP_SYMBOL_BEGIN(name) \
+   DEFINE_GDB_SYMBOL_BEGIN (Lisp_Object, name)
+#define DEFINE_LISP_SYMBOL_END(name) \
+   DEFINE_GDB_SYMBOL_END (LISP_INITIALLY (TAG_SYMOFFSET (i##name \
+                                                         * sizeof *lispsym)))
+
+#include "globals.h"
 
-/* Defined in xdisp.c.  */
-extern Lisp_Object Qimage;
-extern Lisp_Object Qfontification_functions;
-
 /* Convert a Lisp_Object to the corresponding EMACS_INT and vice versa.
    At the machine level, these operations are no-ops.  */
 LISP_MACRO_DEFUN (XLI, EMACS_INT, (Lisp_Object o), (o))
@@ -731,6 +833,7 @@ LISP_MACRO_DEFUN (XPNTR, void *, (Lisp_Object a), (a))
 LISP_MACRO_DEFUN (make_number, Lisp_Object, (EMACS_INT n), (n))
 LISP_MACRO_DEFUN (XINT, EMACS_INT, (Lisp_Object a), (a))
 LISP_MACRO_DEFUN (XFASTINT, EMACS_INT, (Lisp_Object a), (a))
+LISP_MACRO_DEFUN (XSYMBOL, struct Lisp_Symbol *, (Lisp_Object a), (a))
 LISP_MACRO_DEFUN (XTYPE, enum Lisp_Type, (Lisp_Object a), (a))
 LISP_MACRO_DEFUN (XUNTAG, void *, (Lisp_Object a, int type), (a, type))
 
@@ -785,6 +888,17 @@ XFASTINT (Lisp_Object a)
   return n;
 }
 
+/* Extract A's value as a symbol.  */
+INLINE struct Lisp_Symbol *
+XSYMBOL (Lisp_Object a)
+{
+  uintptr_t i = (uintptr_t) XUNTAG (a, Lisp_Symbol);
+  if (! USE_LSB_TAG)
+    i <<= GCTYPEBITS;
+  void *p = (char *) lispsym + i;
+  return p;
+}
+
 /* Extract A's type.  */
 INLINE enum Lisp_Type
 XTYPE (Lisp_Object a)
@@ -797,12 +911,8 @@ XTYPE (Lisp_Object a)
 INLINE void *
 XUNTAG (Lisp_Object a, int type)
 {
-  if (USE_LSB_TAG)
-    {
-      intptr_t i = XLI (a) - type;
-      return (void *) i;
-    }
-  return XPNTR (a);
+  intptr_t i = USE_LSB_TAG ? XLI (a) - type : XLI (a) & VALMASK;
+  return (void *) i;
 }
 
 #endif /* ! USE_LSB_TAG */
@@ -864,7 +974,9 @@ XSTRING (Lisp_Object a)
   return XUNTAG (a, Lisp_String);
 }
 
-LISP_MACRO_DEFUN (XSYMBOL, struct Lisp_Symbol *, (Lisp_Object a), (a))
+/* The index of the C-defined Lisp symbol SYM.
+   This can be used in a static initializer.  */
+#define SYMBOL_INDEX(sym) i##sym
 
 INLINE struct Lisp_Float *
 XFLOAT (Lisp_Object a)
@@ -935,14 +1047,26 @@ XBOOL_VECTOR (Lisp_Object a)
 INLINE Lisp_Object
 make_lisp_ptr (void *ptr, enum Lisp_Type type)
 {
-  EMACS_UINT utype = type;
-  EMACS_UINT typebits = USE_LSB_TAG ? type : utype << VALBITS;
-  Lisp_Object a = XIL (typebits | (uintptr_t) ptr);
+  Lisp_Object a = XIL (TAG_PTR (type, ptr));
   eassert (XTYPE (a) == type && XUNTAG (a, type) == ptr);
   return a;
 }
 
 INLINE Lisp_Object
+make_lisp_symbol (struct Lisp_Symbol *sym)
+{
+  Lisp_Object a = XIL (TAG_SYMOFFSET ((char *) sym - (char *) lispsym));
+  eassert (XSYMBOL (a) == sym);
+  return a;
+}
+
+INLINE Lisp_Object
+builtin_lisp_symbol (int index)
+{
+  return make_lisp_symbol (lispsym + index);
+}
+
+INLINE Lisp_Object
 make_lisp_proc (struct Lisp_Process *p)
 {
   return make_lisp_ptr (p, Lisp_Vectorlike);
@@ -953,7 +1077,7 @@ make_lisp_proc (struct Lisp_Process *p)
 #define XSETCONS(a, b) ((a) = make_lisp_ptr (b, Lisp_Cons))
 #define XSETVECTOR(a, b) ((a) = make_lisp_ptr (b, Lisp_Vectorlike))
 #define XSETSTRING(a, b) ((a) = make_lisp_ptr (b, Lisp_String))
-#define XSETSYMBOL(a, b) ((a) = make_lisp_ptr (b, Lisp_Symbol))
+#define XSETSYMBOL(a, b) ((a) = make_lisp_symbol (b))
 #define XSETFLOAT(a, b) ((a) = make_lisp_ptr (b, Lisp_Float))
 #define XSETMISC(a, b) ((a) = make_lisp_ptr (b, Lisp_Misc))
 
@@ -991,6 +1115,25 @@ make_lisp_proc (struct Lisp_Process *p)
 #define XSETBOOL_VECTOR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BOOL_VECTOR))
 #define XSETSUB_CHAR_TABLE(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUB_CHAR_TABLE))
 
+/* Efficiently convert a pointer to a Lisp object and back.  The
+   pointer is represented as a Lisp integer, so the garbage collector
+   does not know about it.  The pointer should not have both Lisp_Int1
+   bits set, which makes this conversion inherently unportable.  */
+
+INLINE void *
+XINTPTR (Lisp_Object a)
+{
+  return XUNTAG (a, Lisp_Int0);
+}
+
+INLINE Lisp_Object
+make_pointer_integer (void *p)
+{
+  Lisp_Object a = XIL (TAG_PTR (Lisp_Int0, p));
+  eassert (INTEGERP (a) && XINTPTR (a) == p);
+  return a;
+}
+
 /* Type checking.  */
 
 LISP_MACRO_DEFUN_VOID (CHECK_TYPE,
@@ -1560,72 +1703,6 @@ verify ((offsetof (struct Lisp_Sub_Char_Table, contents)
                                Symbols
  ***********************************************************************/
 
-/* Interned state of a symbol.  */
-
-enum symbol_interned
-{
-  SYMBOL_UNINTERNED = 0,
-  SYMBOL_INTERNED = 1,
-  SYMBOL_INTERNED_IN_INITIAL_OBARRAY = 2
-};
-
-enum symbol_redirect
-{
-  SYMBOL_PLAINVAL  = 4,
-  SYMBOL_VARALIAS  = 1,
-  SYMBOL_LOCALIZED = 2,
-  SYMBOL_FORWARDED = 3
-};
-
-struct Lisp_Symbol
-{
-  bool_bf gcmarkbit : 1;
-
-  /* Indicates where the value can be found:
-     0 : it's a plain var, the value is in the `value' field.
-     1 : it's a varalias, the value is really in the `alias' symbol.
-     2 : it's a localized var, the value is in the `blv' object.
-     3 : it's a forwarding variable, the value is in `forward'.  */
-  ENUM_BF (symbol_redirect) redirect : 3;
-
-  /* Non-zero means symbol is constant, i.e. changing its value
-     should signal an error.  If the value is 3, then the var
-     can be changed, but only by `defconst'.  */
-  unsigned constant : 2;
-
-  /* Interned state of the symbol.  This is an enumerator from
-     enum symbol_interned.  */
-  unsigned interned : 2;
-
-  /* True means that this variable has been explicitly declared
-     special (with `defvar' etc), and shouldn't be lexically bound.  */
-  bool_bf declared_special : 1;
-
-  /* True if pointed to from purespace and hence can't be GC'd.  */
-  bool_bf pinned : 1;
-
-  /* The symbol's name, as a Lisp string.  */
-  Lisp_Object name;
-
-  /* Value of the symbol or Qunbound if unbound.  Which alternative of the
-     union is used depends on the `redirect' field above.  */
-  union {
-    Lisp_Object value;
-    struct Lisp_Symbol *alias;
-    struct Lisp_Buffer_Local_Value *blv;
-    union Lisp_Fwd *fwd;
-  } val;
-
-  /* Function value of the symbol or Qnil if not fboundp.  */
-  Lisp_Object function;
-
-  /* The symbol's property list.  */
-  Lisp_Object plist;
-
-  /* Next symbol in obarray bucket, if the symbol is interned.  */
-  struct Lisp_Symbol *next;
-};
-
 /* Value is name of symbol.  */
 
 LISP_MACRO_DEFUN (SYMBOL_VAL, Lisp_Object, (struct Lisp_Symbol *sym), (sym))
@@ -1699,8 +1776,9 @@ SYMBOL_INTERNED_IN_INITIAL_OBARRAY_P (Lisp_Object sym)
 
 LISP_MACRO_DEFUN (SYMBOL_CONSTANT_P, int, (Lisp_Object sym), (sym))
 
-#define DEFSYM(sym, name)                                               \
-  do { (sym) = intern_c_string ((name)); staticpro (&(sym)); } while (false)
+/* Placeholder for make-docfile to process.  The actual symbol
+   definition is done by lread.c's defsym.  */
+#define DEFSYM(sym, name) /* empty */
 
 
 /***********************************************************************
@@ -2694,24 +2772,6 @@ CHECK_NUMBER_CDR (Lisp_Object x)
    Lisp_Object fnname
 #endif
 
-/* Note that the weird token-substitution semantics of ANSI C makes
-   this work for MANY and UNEVALLED.  */
-#define DEFUN_ARGS_MANY         (ptrdiff_t, Lisp_Object *)
-#define DEFUN_ARGS_UNEVALLED    (Lisp_Object)
-#define DEFUN_ARGS_0    (void)
-#define DEFUN_ARGS_1    (Lisp_Object)
-#define DEFUN_ARGS_2    (Lisp_Object, Lisp_Object)
-#define DEFUN_ARGS_3    (Lisp_Object, Lisp_Object, Lisp_Object)
-#define DEFUN_ARGS_4    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
-#define DEFUN_ARGS_5    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
-                         Lisp_Object)
-#define DEFUN_ARGS_6    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
-                         Lisp_Object, Lisp_Object)
-#define DEFUN_ARGS_7    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
-                         Lisp_Object, Lisp_Object, Lisp_Object)
-#define DEFUN_ARGS_8    (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
-                         Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
-
 /* True if OBJ is a Lisp function.  */
 INLINE bool
 FUNCTIONP (Lisp_Object obj)
@@ -3260,15 +3320,6 @@ extern int gcpro_level;
 
 void staticpro (Lisp_Object *);
 
-/* Declare a Lisp-callable function.  The MAXARGS parameter has the same
-   meaning as in the DEFUN macro, and is used to construct a prototype.  */
-/* We can use the same trick as in the DEFUN macro to generate the
-   appropriate prototype.  */
-#define EXFUN(fnname, maxargs) \
-  extern Lisp_Object fnname DEFUN_ARGS_ ## maxargs
-
-#include "globals.h"
-
 /* Forward declarations for prototypes.  */
 struct window;
 struct frame;
@@ -3387,30 +3438,6 @@ set_sub_char_table_contents (Lisp_Object table, ptrdiff_t idx, Lisp_Object val)
 }
 
 /* Defined in data.c.  */
-extern Lisp_Object Qquote, Qunbound;
-extern Lisp_Object Qerror_conditions, Qerror_message, Qtop_level;
-extern Lisp_Object Qerror, Qquit, Qargs_out_of_range;
-extern Lisp_Object Qvoid_variable, Qvoid_function;
-extern Lisp_Object Qinvalid_read_syntax;
-extern Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch;
-extern Lisp_Object Quser_error, Qend_of_file, Qarith_error, Qmark_inactive;
-extern Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only;
-extern Lisp_Object Qtext_read_only;
-extern Lisp_Object Qinteractive_form;
-extern Lisp_Object Qcircular_list;
-extern Lisp_Object Qsequencep;
-extern Lisp_Object Qchar_or_string_p, Qinteger_or_marker_p;
-extern Lisp_Object Qfboundp;
-
-extern Lisp_Object Qcdr;
-
-extern Lisp_Object Qrange_error, Qoverflow_error;
-
-extern Lisp_Object Qnumber_or_marker_p;
-
-extern Lisp_Object Qbuffer, Qinteger, Qsymbol;
-
-/* Defined in data.c.  */
 extern Lisp_Object indirect_function (Lisp_Object);
 extern Lisp_Object find_symbol_value (Lisp_Object);
 enum Arith_Comparison {
@@ -3466,7 +3493,6 @@ extern void syms_of_cmds (void);
 extern void keys_of_cmds (void);
 
 /* Defined in coding.c.  */
-extern Lisp_Object Qcharset;
 extern Lisp_Object detect_coding_system (const unsigned char *, ptrdiff_t,
                                          ptrdiff_t, bool, bool, Lisp_Object);
 extern void init_coding (void);
@@ -3490,14 +3516,10 @@ extern void init_syntax_once (void);
 extern void syms_of_syntax (void);
 
 /* Defined in fns.c.  */
-extern Lisp_Object QCrehash_size, QCrehash_threshold;
 enum { NEXT_ALMOST_PRIME_LIMIT = 11 };
 extern EMACS_INT next_almost_prime (EMACS_INT) ATTRIBUTE_CONST;
 extern Lisp_Object larger_vector (Lisp_Object, ptrdiff_t, ptrdiff_t);
 extern void sweep_weak_hash_tables (void);
-extern Lisp_Object Qcursor_in_echo_area;
-extern Lisp_Object Qstring_lessp;
-extern Lisp_Object QCsize, QCtest, QCweakness, Qequal, Qeq;
 EMACS_UINT hash_string (char const *, ptrdiff_t);
 EMACS_UINT sxhash (Lisp_Object, int);
 Lisp_Object make_hash_table (struct hash_table_test, Lisp_Object, Lisp_Object,
@@ -3537,15 +3559,11 @@ extern void init_fringe_once (void);
 #endif /* HAVE_WINDOW_SYSTEM */
 
 /* Defined in image.c.  */
-extern Lisp_Object QCascent, QCmargin, QCrelief;
-extern Lisp_Object QCconversion;
 extern int x_bitmap_mask (struct frame *, ptrdiff_t);
 extern void reset_image_types (void);
 extern void syms_of_image (void);
 
 /* Defined in insdel.c.  */
-extern Lisp_Object Qinhibit_modification_hooks;
-extern Lisp_Object Qregion_extract_function;
 extern void move_gap_both (ptrdiff_t, ptrdiff_t);
 extern _Noreturn void buffer_overflow (void);
 extern void make_gap (ptrdiff_t);
@@ -3600,18 +3618,6 @@ extern Lisp_Object Vwindow_system;
 extern Lisp_Object sit_for (Lisp_Object, bool, int);
 
 /* Defined in xdisp.c.  */
-extern Lisp_Object Qinhibit_point_motion_hooks;
-extern Lisp_Object Qinhibit_redisplay;
-extern Lisp_Object Qmenu_bar_update_hook;
-extern Lisp_Object Qwindow_scroll_functions;
-extern Lisp_Object Qoverriding_local_map, Qoverriding_terminal_local_map;
-extern Lisp_Object Qtext, Qboth, Qboth_horiz, Qtext_image_horiz;
-extern Lisp_Object Qspace, Qcenter, QCalign_to;
-extern Lisp_Object Qbar, Qhbar, Qhollow;
-extern Lisp_Object Qleft_margin, Qright_margin;
-extern Lisp_Object QCdata, QCfile;
-extern Lisp_Object QCmap;
-extern Lisp_Object Qrisky_local_variable;
 extern bool noninteractive_need_newline;
 extern Lisp_Object echo_area_buffer[2];
 extern void add_to_log (const char *, Lisp_Object, Lisp_Object);
@@ -3745,8 +3751,6 @@ build_string (const char *str)
 
 extern Lisp_Object pure_cons (Lisp_Object, Lisp_Object);
 extern void make_byte_code (struct Lisp_Vector *);
-extern Lisp_Object Qautomatic_gc;
-extern Lisp_Object Qchar_table_extra_slots;
 extern struct Lisp_Vector *allocate_vector (EMACS_INT);
 
 /* Make an uninitialized vector for SIZE objects.  NOTE: you must
@@ -3850,11 +3854,8 @@ extern void syms_of_chartab (void);
 /* Defined in print.c.  */
 extern Lisp_Object Vprin1_to_string_buffer;
 extern void debug_print (Lisp_Object) EXTERNALLY_VISIBLE;
-extern Lisp_Object Qstandard_output;
-extern Lisp_Object Qexternal_debugging_output;
 extern void temp_output_buffer_setup (const char *);
 extern int print_level;
-extern Lisp_Object Qprint_escape_newlines;
 extern void write_string (const char *, int);
 extern void print_error_message (Lisp_Object, Lisp_Object, const char *,
                                  Lisp_Object);
@@ -3878,13 +3879,11 @@ extern ptrdiff_t evxprintf (char **, ptrdiff_t *, char const *, ptrdiff_t,
   ATTRIBUTE_FORMAT_PRINTF (5, 0);
 
 /* Defined in lread.c.  */
-extern Lisp_Object Qsize, Qvariable_documentation, Qstandard_input;
-extern Lisp_Object Qbackquote, Qcomma, Qcomma_at, Qcomma_dot, Qfunction;
-extern Lisp_Object Qlexical_binding;
 extern Lisp_Object check_obarray (Lisp_Object);
 extern Lisp_Object intern_1 (const char *, ptrdiff_t);
 extern Lisp_Object intern_c_string_1 (const char *, ptrdiff_t);
-extern Lisp_Object intern_driver (Lisp_Object, Lisp_Object, ptrdiff_t);
+extern Lisp_Object intern_driver (Lisp_Object, Lisp_Object, Lisp_Object);
+extern void init_symbol (Lisp_Object, Lisp_Object);
 extern Lisp_Object oblookup (Lisp_Object, const char *, ptrdiff_t, ptrdiff_t);
 INLINE void
 LOADHIST_ATTACH (Lisp_Object x)
@@ -3916,10 +3915,8 @@ intern_c_string (const char *str)
 
 /* Defined in eval.c.  */
 extern EMACS_INT lisp_eval_depth;
-extern Lisp_Object Qexit, Qinteractive, Qcommandp, Qmacro;
-extern Lisp_Object Qinhibit_quit, Qinternal_interpreter_environment, Qclosure;
-extern Lisp_Object Qand_rest;
 extern Lisp_Object Vautoload_queue;
+extern Lisp_Object Vrun_hooks;
 extern Lisp_Object Vsignaling_function;
 extern Lisp_Object inhibit_lisp_code;
 extern struct handler *handlerlist;
@@ -3931,7 +3928,7 @@ extern struct handler *handlerlist;
      call1 (Vrun_hooks, Qmy_funny_hook);
 
    should no longer be used.  */
-extern Lisp_Object Vrun_hooks;
+extern void run_hook (Lisp_Object);
 extern void run_hook_with_args_2 (Lisp_Object, Lisp_Object, Lisp_Object);
 extern Lisp_Object run_hook_with_args (ptrdiff_t nargs, Lisp_Object *args,
                                        Lisp_Object (*funcall)
@@ -3992,7 +3989,6 @@ extern bool let_shadows_global_binding_p (Lisp_Object symbol);
 
 
 /* Defined in editfns.c.  */
-extern Lisp_Object Qfield;
 extern void insert1 (Lisp_Object);
 extern Lisp_Object format2 (const char *, Lisp_Object, Lisp_Object);
 extern Lisp_Object save_excursion_save (void);
@@ -4039,12 +4035,6 @@ extern void syms_of_marker (void);
 
 /* Defined in fileio.c.  */
 
-extern Lisp_Object Qfile_error;
-extern Lisp_Object Qfile_notify_error;
-extern Lisp_Object Qfile_exists_p;
-extern Lisp_Object Qfile_directory_p;
-extern Lisp_Object Qinsert_file_contents;
-extern Lisp_Object Qfile_name_history;
 extern Lisp_Object expand_and_dir_to_file (Lisp_Object, Lisp_Object);
 extern Lisp_Object write_region (Lisp_Object, Lisp_Object, Lisp_Object,
                                  Lisp_Object, Lisp_Object, Lisp_Object,
@@ -4061,7 +4051,6 @@ extern bool file_accessible_directory_p (Lisp_Object);
 extern void init_fileio (void);
 extern void syms_of_fileio (void);
 extern Lisp_Object make_temp_name (Lisp_Object, bool);
-extern Lisp_Object Qdelete_file;
 
 /* Defined in search.c.  */
 extern void shrink_regexp_cache (void);
@@ -4091,7 +4080,6 @@ extern void clear_regexp_cache (void);
 
 /* Defined in minibuf.c.  */
 
-extern Lisp_Object Qcompletion_ignore_case;
 extern Lisp_Object Vminibuffer_list;
 extern Lisp_Object last_minibuf_string;
 extern Lisp_Object get_minibuffer (EMACS_INT);
@@ -4100,15 +4088,10 @@ extern void syms_of_minibuf (void);
 
 /* Defined in callint.c.  */
 
-extern Lisp_Object Qminus, Qplus;
-extern Lisp_Object Qprogn;
-extern Lisp_Object Qwhen;
-extern Lisp_Object Qmouse_leave_buffer_hook;
 extern void syms_of_callint (void);
 
 /* Defined in casefiddle.c.  */
 
-extern Lisp_Object Qidentity;
 extern void syms_of_casefiddle (void);
 extern void keys_of_casefiddle (void);
 
@@ -4122,8 +4105,6 @@ extern void syms_of_casetab (void);
 extern Lisp_Object echo_message_buffer;
 extern struct kboard *echo_kboard;
 extern void cancel_echoing (void);
-extern Lisp_Object Qdisabled, QCfilter;
-extern Lisp_Object Qup, Qdown;
 extern Lisp_Object last_undo_boundary;
 extern bool input_pending;
 #ifdef HAVE_STACK_OVERFLOW_HANDLING
@@ -4157,7 +4138,6 @@ extern bool indented_beyond_p (ptrdiff_t, ptrdiff_t, EMACS_INT);
 extern void syms_of_indent (void);
 
 /* Defined in frame.c.  */
-extern Lisp_Object Qonly, Qnone;
 extern void store_frame_param (struct frame *, Lisp_Object, Lisp_Object);
 extern void store_in_alist (Lisp_Object *, Lisp_Object, Lisp_Object);
 extern Lisp_Object do_switch_frame (Lisp_Object, int, int, Lisp_Object);
@@ -4173,9 +4153,7 @@ extern bool display_arg;
 #endif
 extern Lisp_Object decode_env_path (const char *, const char *, bool);
 extern Lisp_Object empty_unibyte_string, empty_multibyte_string;
-extern Lisp_Object Qfile_name_handler_alist;
 extern _Noreturn void terminate_due_to_signal (int, int);
-extern Lisp_Object Qkill_emacs;
 #ifdef WINDOWSNT
 extern Lisp_Object Vlibrary_cache;
 #endif
@@ -4210,7 +4188,6 @@ extern bool inhibit_window_system;
 extern bool running_asynch_code;
 
 /* Defined in process.c.  */
-extern Lisp_Object QCtype, Qlocal;
 extern void kill_buffer_processes (Lisp_Object);
 extern int wait_reading_process_output (intmax_t, int, int, bool, Lisp_Object,
                                         struct Lisp_Process *, int);
@@ -4246,7 +4223,6 @@ extern void set_initial_environment (void);
 extern void syms_of_callproc (void);
 
 /* Defined in doc.c.  */
-extern Lisp_Object Qfunction_documentation;
 extern Lisp_Object read_doc_string (Lisp_Object);
 extern Lisp_Object get_doc_string (Lisp_Object, bool, bool);
 extern void syms_of_doc (void);
@@ -4267,8 +4243,6 @@ extern void init_macros (void);
 extern void syms_of_macros (void);
 
 /* Defined in undo.c.  */
-extern Lisp_Object Qapply;
-extern Lisp_Object Qinhibit_read_only;
 extern void truncate_undo_list (struct buffer *);
 extern void record_insert (ptrdiff_t, ptrdiff_t);
 extern void record_delete (ptrdiff_t, Lisp_Object, bool);
@@ -4278,11 +4252,8 @@ extern void record_property_change (ptrdiff_t, ptrdiff_t,
                                     Lisp_Object, Lisp_Object,
                                     Lisp_Object);
 extern void syms_of_undo (void);
-/* Defined in textprop.c.  */
-extern Lisp_Object Qmouse_face;
-extern Lisp_Object Qinsert_in_front_hooks, Qinsert_behind_hooks;
-extern Lisp_Object Qminibuffer_prompt;
 
+/* Defined in textprop.c.  */
 extern void report_interval_modification (Lisp_Object, Lisp_Object);
 
 /* Defined in menu.c.  */
@@ -4366,9 +4337,6 @@ extern void init_font (void);
 #ifdef HAVE_WINDOW_SYSTEM
 /* Defined in fontset.c.  */
 extern void syms_of_fontset (void);
-
-/* Defined in xfns.c, w32fns.c, or macfns.c.  */
-extern Lisp_Object Qfont_param;
 #endif
 
 /* Defined in gfilenotify.c */
@@ -4388,16 +4356,6 @@ extern void syms_of_w32notify (void);
 #endif
 
 /* Defined in xfaces.c.  */
-extern Lisp_Object Qdefault, Qfringe;
-extern Lisp_Object Qscroll_bar, Qcursor;
-extern Lisp_Object Qmode_line_inactive;
-extern Lisp_Object Qface;
-extern Lisp_Object Qnormal;
-extern Lisp_Object QCfamily, QCweight, QCslant;
-extern Lisp_Object QCheight, QCname, QCwidth, QCforeground, QCbackground;
-extern Lisp_Object Qextra_light, Qlight, Qsemi_light, Qsemi_bold;
-extern Lisp_Object Qbold, Qextra_bold, Qultra_bold;
-extern Lisp_Object Qoblique, Qitalic;
 extern Lisp_Object Vface_alternative_font_family_alist;
 extern Lisp_Object Vface_alternative_font_registry_alist;
 extern void syms_of_xfaces (void);