1 /* Fundamental definitions for GNU Emacs Lisp interpreter.
2 Copyright (C) 1985,86,87,93,94,95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 /* These are default choices for the types to use. */
26 #define EMACS_UINT unsigned int
29 /* Define the fundamental Lisp data structures. */
31 /* This is the set of Lisp data types. */
35 /* Integer. XINT (obj) is the integer value. */
38 /* Symbol. XSYMBOL (object) points to a struct Lisp_Symbol. */
41 /* Miscellaneous. XMISC (object) points to a union Lisp_Misc,
42 whose first member indicates the subtype. */
45 /* String. XSTRING (object) points to a struct Lisp_String.
46 The length of the string, and its contents, are stored therein. */
49 /* Vector of Lisp objects, or something resembling it.
50 XVECTOR (object) points to a struct Lisp_Vector, which contains
51 the size and contents. The size field also contains the type
52 information, if it's not a real vector object. */
55 /* Cons. XCONS (object) points to a struct Lisp_Cons. */
58 #ifdef LISP_FLOAT_TYPE
60 #endif /* LISP_FLOAT_TYPE */
62 /* This is not a type code. It is for range checking. */
66 /* This is the set of datatypes that share a common structure.
67 The first member of the structure is a type code from this set.
68 The enum values are arbitrary, but we'll use large numbers to make it
69 more likely that we'll spot the error if a random word in memory is
70 mistakenly interpreted as a Lisp_Misc. */
73 Lisp_Misc_Free
= 0x5eab,
78 Lisp_Misc_Buffer_Objfwd
,
79 Lisp_Misc_Buffer_Local_Value
,
80 Lisp_Misc_Some_Buffer_Local_Value
,
82 Lisp_Misc_Display_Objfwd
,
83 /* Currently floats are not a misc type,
84 but let's define this in case we want to change that. */
86 /* This is not a type code. It is for range checking. */
90 /* These values are overridden by the m- file on some machines. */
101 #ifndef WORDS_BIG_ENDIAN
103 /* Definition of Lisp_Object for little-endian machines. */
108 /* Used for comparing two Lisp_Objects;
109 also, positive integers can be accessed fast this way. */
115 int type
: GCTYPEBITS
+1;
119 unsigned int val
: VALBITS
;
120 int type
: GCTYPEBITS
+1;
124 unsigned int val
: VALBITS
;
125 enum Lisp_Type type
: GCTYPEBITS
;
126 /* The markbit is not really part of the value of a Lisp_Object,
127 and is always zero except during garbage collection. */
128 unsigned int markbit
: 1;
133 #else /* If WORDS_BIG_ENDIAN */
138 /* Used for comparing two Lisp_Objects;
139 also, positive integers can be accessed fast this way. */
144 int type
: GCTYPEBITS
+1;
149 int type
: GCTYPEBITS
+1;
150 unsigned int val
: VALBITS
;
154 /* The markbit is not really part of the value of a Lisp_Object,
155 and is always zero except during garbage collection. */
156 unsigned int markbit
: 1;
157 enum Lisp_Type type
: GCTYPEBITS
;
158 unsigned int val
: VALBITS
;
163 #endif /* WORDS_BIG_ENDIAN */
165 #endif /* NO_UNION_TYPE */
168 /* If union type is not wanted, define Lisp_Object as just a number
169 and define the macros below to extract fields by shifting */
173 #define Lisp_Object EMACS_INT
176 #define VALMASK ((((EMACS_INT) 1)<<VALBITS) - 1)
178 #define GCTYPEMASK ((((EMACS_INT) 1)<<GCTYPEBITS) - 1)
180 /* Two flags that are set during GC. On some machines, these flags
181 are defined differently by the m- file. */
183 /* This is set in the car of a cons and in the plist slot of a symbol
184 to indicate it is marked. Likewise in the plist slot of an interval,
185 the chain slot of a marker, the type slot of a float, and the name
188 In strings, this bit in the size field indicates that the string
189 is a "large" one, one which was separately malloc'd
190 rather than being part of a string block. */
193 #define MARKBIT (1 << (VALBITS + GCTYPEBITS))
196 /* In the size word of a vector, this bit means the vector has been marked.
197 In the size word of a large string, likewise. */
199 #ifndef ARRAY_MARK_FLAG
200 #define ARRAY_MARK_FLAG ((MARKBIT >> 1) & ~MARKBIT)
201 #endif /* no ARRAY_MARK_FLAG */
203 /* In the size word of a struct Lisp_Vector, this bit means it's really
204 some other vector-like object. */
205 #ifndef PSEUDOVECTOR_FLAG
206 #define PSEUDOVECTOR_FLAG ((ARRAY_MARK_FLAG >> 1) & ~ARRAY_MARK_FLAG)
209 /* In a pseudovector, the size field actually contains a word with one
210 PSEUDOVECTOR_FLAG bit set, and exactly one of the following bits to
211 indicate the actual type. */
214 PVEC_NORMAL_VECTOR
= 0,
216 PVEC_PROCESS
= 0x200,
218 PVEC_COMPILED
= 0x800,
219 PVEC_WINDOW
= 0x1000,
220 PVEC_WINDOW_CONFIGURATION
= 0x2000,
222 PVEC_TYPE_MASK
= 0x7f00,
223 PVEC_FLAG
= PSEUDOVECTOR_FLAG
,
226 /* For convenience, we also store the number of elements in these bits. */
227 #define PSEUDOVECTOR_SIZE_MASK 0xff
229 #if ARRAY_MARK_FLAG == MARKBIT || PSEUDOVECTOR_FLAG == ARRAY_MARK_FLAG || PSEUDOVECTOR_FLAG == MARKBIT
233 #endif /* NO_UNION_TYPE */
235 /* These macros extract various sorts of values from a Lisp_Object.
236 For example, if tem is a Lisp_Object whose type is Lisp_Cons,
237 XCONS (tem) is the struct Lisp_Cons * pointing to the memory for that cons. */
241 /* One need to override this if there must be high bits set in data space
242 (doing the result of the below & ((1 << (GCTYPE + 1)) - 1) would work
243 on all machines, but would penalise machines which don't need it)
246 #define XTYPE(a) ((enum Lisp_Type) ((a) >> VALBITS))
250 #define XSETTYPE(a, b) ((a) = XUINT (a) | ((EMACS_INT)(b) << VALBITS))
253 /* For integers known to be positive, XFASTINT provides fast retrieval
254 and XSETFASTINT provides fast storage. This takes advantage of the
255 fact that Lisp_Int is 0. */
256 #define XFASTINT(a) ((a) + 0)
257 #define XSETFASTINT(a, b) ((a) = (b))
259 /* Extract the value of a Lisp_Object as a signed integer. */
261 #ifndef XINT /* Some machines need to do this differently. */
262 #define XINT(a) (((a) << (INTBITS-VALBITS)) >> (INTBITS-VALBITS))
265 /* Extract the value as an unsigned integer. This is a basis
266 for extracting it as a pointer to a structure in storage. */
269 #define XUINT(a) ((a) & VALMASK)
274 /* In this representation, data is found in two widely separated segments. */
275 extern int pure_size
;
277 (XUINT (a) | (XUINT (a) > pure_size ? DATA_SEG_BITS : PURE_SEG_BITS))
278 #else /* not HAVE_SHM */
280 /* This case is used for the rt-pc.
281 In the diffs I was given, it checked for ptr = 0
282 and did not adjust it in that case.
283 But I don't think that zero should ever be found
284 in a Lisp object whose data type says it points to something. */
285 #define XPNTR(a) (XUINT (a) | DATA_SEG_BITS)
287 #define XPNTR(a) XUINT (a)
289 #endif /* not HAVE_SHM */
290 #endif /* no XPNTR */
293 #define XSET(var, type, ptr) \
294 ((var) = ((EMACS_INT)(type) << VALBITS) + ((EMACS_INT) (ptr) & VALMASK))
297 /* During garbage collection, XGCTYPE must be used for extracting types
298 so that the mark bit is ignored. XMARKBIT accesses the markbit.
299 Markbits are used only in particular slots of particular structure types.
300 Other markbits are always zero.
301 Outside of garbage collection, all mark bits are always zero. */
304 #define XGCTYPE(a) ((enum Lisp_Type) (((a) >> VALBITS) & GCTYPEMASK))
307 #if VALBITS + GCTYPEBITS == INTBITS - 1
308 /* Make XMARKBIT faster if mark bit is sign bit. */
310 #define XMARKBIT(a) ((a) < 0)
312 #endif /* markbit is sign bit */
315 #define XMARKBIT(a) ((a) & MARKBIT)
319 #define XSETMARKBIT(a,b) ((a) = ((a) & ~MARKBIT) | ((b) ? MARKBIT : 0))
323 #define XMARK(a) ((a) |= MARKBIT)
327 #define XUNMARK(a) ((a) &= ~MARKBIT)
330 #endif /* NO_UNION_TYPE */
332 #ifndef NO_UNION_TYPE
334 #define XTYPE(a) ((enum Lisp_Type) (a).u.type)
335 #define XSETTYPE(a, b) ((a).u.type = (char) (b))
337 /* For integers known to be positive, XFASTINT provides fast retrieval
338 and XSETFASTINT provides fast storage. This takes advantage of the
339 fact that Lisp_Int is 0. */
340 #define XFASTINT(a) ((a).i + 0)
341 #define XSETFASTINT(a, b) ((a).i = (b))
343 #ifdef EXPLICIT_SIGN_EXTEND
344 /* Make sure we sign-extend; compilers have been known to fail to do so. */
345 #define XINT(a) (((a).i << (INTBITS-VALBITS)) >> (INTBITS-VALBITS))
347 #define XINT(a) ((a).s.val)
348 #endif /* EXPLICIT_SIGN_EXTEND */
350 #define XUINT(a) ((a).u.val)
351 #define XPNTR(a) ((a).u.val)
353 #define XSET(var, vartype, ptr) \
354 (((var).s.type = ((char) (vartype))), ((var).s.val = ((int) (ptr))))
356 /* During garbage collection, XGCTYPE must be used for extracting types
357 so that the mark bit is ignored. XMARKBIT access the markbit.
358 Markbits are used only in particular slots of particular structure types.
359 Other markbits are always zero.
360 Outside of garbage collection, all mark bits are always zero. */
362 #define XGCTYPE(a) ((a).gu.type)
363 #define XMARKBIT(a) ((a).gu.markbit)
364 #define XSETMARKBIT(a,b) (XMARKBIT(a) = (b))
365 #define XMARK(a) (XMARKBIT(a) = 1)
366 #define XUNMARK(a) (XMARKBIT(a) = 0)
368 #endif /* NO_UNION_TYPE */
370 /* Extract a value or address from a Lisp_Object. */
372 #define XCONS(a) ((struct Lisp_Cons *) XPNTR(a))
373 #define XVECTOR(a) ((struct Lisp_Vector *) XPNTR(a))
374 #define XSTRING(a) ((struct Lisp_String *) XPNTR(a))
375 #define XSYMBOL(a) ((struct Lisp_Symbol *) XPNTR(a))
376 #define XFLOAT(a) ((struct Lisp_Float *) XPNTR(a))
379 #define XMISC(a) ((union Lisp_Misc *) XPNTR(a))
380 #define XMARKER(a) (&(XMISC(a)->u_marker))
381 #define XINTFWD(a) (&(XMISC(a)->u_intfwd))
382 #define XBOOLFWD(a) (&(XMISC(a)->u_boolfwd))
383 #define XOBJFWD(a) (&(XMISC(a)->u_objfwd))
384 #define XBUFFER_OBJFWD(a) (&(XMISC(a)->u_buffer_objfwd))
385 #define XBUFFER_LOCAL_VALUE(a) (&(XMISC(a)->u_buffer_local_value))
386 #define XOVERLAY(a) (&(XMISC(a)->u_overlay))
387 #define XDISPLAY_OBJFWD(a) (&(XMISC(a)->u_display_objfwd))
389 /* Pseudovector types. */
390 #define XPROCESS(a) ((struct Lisp_Process *) XPNTR(a))
391 #define XWINDOW(a) ((struct window *) XPNTR(a))
392 #define XSUBR(a) ((struct Lisp_Subr *) XPNTR(a))
393 #define XBUFFER(a) ((struct buffer *) XPNTR(a))
396 /* Construct a Lisp_Object from a value or address. */
398 #define XSETINT(a, b) XSET (a, Lisp_Int, b)
399 #define XSETCONS(a, b) XSET (a, Lisp_Cons, b)
400 #define XSETVECTOR(a, b) XSET (a, Lisp_Vectorlike, b)
401 #define XSETSTRING(a, b) XSET (a, Lisp_String, b)
402 #define XSETSYMBOL(a, b) XSET (a, Lisp_Symbol, b)
403 #define XSETFLOAT(a, b) XSET (a, Lisp_Float, b)
406 #define XSETMISC(a, b) XSET (a, Lisp_Misc, b)
407 #define XSETMARKER(a, b) (XSETMISC (a, b), XMISC (a)->type = Lisp_Misc_Marker)
409 /* Pseudovector types. */
410 #define XSETPSEUDOVECTOR(a, b, code) \
411 (XSETVECTOR (a, b), XVECTOR (a)->size |= PSEUDOVECTOR_FLAG | (code))
412 #define XSETWINDOW_CONFIGURATION(a, b) \
413 (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW_CONFIGURATION))
414 #define XSETPROCESS(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_PROCESS))
415 #define XSETWINDOW(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_WINDOW))
416 #define XSETSUBR(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_SUBR))
417 #define XSETCOMPILED(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_COMPILED))
418 #define XSETBUFFER(a, b) (XSETPSEUDOVECTOR (a, b, PVEC_BUFFER))
420 #ifdef USE_TEXT_PROPERTIES
421 /* Basic data type for use of intervals. See the macros in intervals.h. */
425 /* The first group of entries deal with the tree structure. */
427 unsigned int total_length
; /* Length of myself and both children. */
428 unsigned int position
; /* Cache of interval's character position. */
429 struct interval
*left
; /* Intervals which precede me. */
430 struct interval
*right
; /* Intervals which succeed me. */
432 /* Parent in the tree, or the Lisp_Object containing this interval tree.
434 The mark bit on the root interval of an interval tree says
435 whether we have started (and possibly finished) marking the
436 tree. If GC comes across an interval tree whose root's parent
437 field has its markbit set, it leaves the tree alone.
439 You'd think we could store this information in the parent object
440 somewhere (after all, that should be visited once and then
441 ignored too, right?), but strings are GC'd strangely. */
442 struct interval
*parent
;
444 /* The remaining components are `properties' of the interval.
445 The first four are duplicates for things which can be on the list,
446 for purposes of speed. */
448 unsigned char write_protect
; /* Non-zero means can't modify. */
449 unsigned char visible
; /* Zero means don't display. */
450 unsigned char front_sticky
; /* Non-zero means text inserted just
451 before this interval goes into it. */
452 unsigned char rear_sticky
; /* Likewise for just after it. */
454 /* Properties of this interval.
455 The mark bit on this field says whether this particular interval
456 tree node has been visited. Since intervals should never be
457 shared, GC aborts if it seems to have visited an interval twice. */
461 typedef struct interval
*INTERVAL
;
463 /* Complain if object is not string or buffer type */
464 #define CHECK_STRING_OR_BUFFER(x, i) \
465 { if (!STRINGP ((x)) && !BUFFERP ((x))) \
466 x = wrong_type_argument (Qbuffer_or_string_p, (x)); }
468 /* Macro used to conditionally compile intervals into certain data
469 structures. See, e.g., struct Lisp_String below. */
470 #define DECLARE_INTERVALS INTERVAL intervals;
472 /* Macro used to conditionally compile interval initialization into
473 certain code. See, e.g., alloc.c. */
474 #define INITIALIZE_INTERVAL(ptr,val) ptr->intervals = val
476 #else /* No text properties */
478 /* If no intervals are used, make the above definitions go away. */
480 #define CHECK_STRING_OR_BUFFER(x, i)
483 #define DECLARE_INTERVALS
484 #define INITIALIZE_INTERVAL(ptr,val)
486 #endif /* USE_TEXT_PROPERTIES */
488 #define ECHOBUFSIZE 300
489 /* All of the per-display objects, packaged together in a struct. */
490 typedef struct PERDISPLAY PERDISPLAY
;
493 PERDISPLAY
*next_perdisplay
;
494 Lisp_Object Vprefix_arg
;
495 Lisp_Object Vcurrent_prefix_arg
;
496 Lisp_Object this_command_keys
;
497 Lisp_Object internal_last_event_frame
;
499 /* Vector to GCPRO the frames and windows mentioned in kbd_buffer.
501 The interrupt-level event handlers will never enqueue an event on a
502 frame which is not in Vframe_list, and once an event is dequeued,
503 internal_last_event_frame or the event itself points to the frame.
506 But while the event is sitting in the queue, it's completely
507 unprotected. Suppose the user types one command which will run for
508 a while and then delete a frame, and then types another event at
509 the frame that will be deleted, before the command gets around to
510 it. Suppose there are no references to this frame elsewhere in
511 Emacs, and a GC occurs before the second event is dequeued. Now we
512 have an event referring to a freed frame, which will crash Emacs
515 Similar things happen when an event on a scroll bar is enqueued; the
516 window may be deleted while the event is in the queue.
518 So, we use this vector to protect the frame_or_window field in the
519 event queue. That way, they'll be dequeued as dead frames or
520 windows, but still valid lisp objects.
522 If perd->kbd_buffer[i].kind != no_event, then
523 (XVECTOR (perd->kbd_buffer_frame_or_window)->contents[i]
524 == perd->kbd_buffer[i].frame_or_window. */
525 Lisp_Object kbd_buffer_frame_or_window
;
527 /* Circular buffer for pre-read keyboard input. */
528 struct input_event
*kbd_buffer
;
530 /* Pointer to next available character in kbd_buffer.
531 If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty.
532 This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the
533 next available char is in kbd_buffer[0]. */
534 struct input_event
*kbd_fetch_ptr
;
536 /* Pointer to next place to store character in kbd_buffer. This
537 may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next
538 character should go in kbd_buffer[0]. */
539 volatile struct input_event
*kbd_store_ptr
;
541 /* The above pair of variables forms a "queue empty" flag. When we
542 enqueue a non-hook event, we increment kbd_store_ptr. When we
543 dequeue a non-hook event, we increment kbd_fetch_ptr. We say that
544 there is input available iff the two counters are not equal.
546 Why not just have a flag set and cleared by the enqueuing and
547 dequeuing functions? Such a flag could be screwed up by interrupts
548 at inopportune times. */
550 int this_command_key_count
;
552 /* Nonzero means echo each character as typed. */
555 /* If we have echoed a prompt string specified by the user,
556 this is its length. Otherwise this is -1. */
557 int echo_after_prompt
;
559 /* Where to append more text to echobuf if we want to. */
562 /* The text we're echoing in the modeline - partial key sequences,
563 usually. '\0'-terminated. This really shouldn't have a fixed size. */
564 char echobuf
[ECHOBUFSIZE
];
567 #ifdef MULTI_PERDISPLAY
568 /* The perdisplay object associated with a particular frame. */
569 extern PERDISPLAY
*get_perdisplay ();
571 /* The perdisplay object associated with the currently executing command. */
572 extern PERDISPLAY
*current_perdisplay
;
574 /* A list of all perdisplay objects, linked through next_perdisplay. */
575 extern PERDISPLAY
*all_perdisplays
;
577 extern PERDISPLAY the_only_perdisplay
;
578 #define get_perdisplay(f) (&the_only_perdisplay)
579 #define current_perdisplay (&the_only_perdisplay)
580 #define all_perdisplays (&the_only_perdisplay)
583 /* In a cons, the markbit of the car is the gc mark bit */
587 Lisp_Object car
, cdr
;
590 /* Like a cons, but records info on where the text lives that it was read from */
591 /* This is not really in use now */
593 struct Lisp_Buffer_Cons
595 Lisp_Object car
, cdr
;
596 struct buffer
*buffer
;
600 /* In a string or vector, the sign bit of the `size' is the gc mark bit */
605 DECLARE_INTERVALS
/* `data' field must be last. */
606 unsigned char data
[1];
609 /* If a struct is made to look like a vector, this macro returns the length
611 #define VECSIZE(type) ((sizeof (type) - (sizeof (struct Lisp_Vector) \
612 - sizeof (Lisp_Object))) \
613 / sizeof (Lisp_Object))
618 struct Lisp_Vector
*next
;
619 Lisp_Object contents
[1];
622 /* In a symbol, the markbit of the plist is used as the gc mark bit */
626 struct Lisp_String
*name
;
628 Lisp_Object function
;
630 struct Lisp_Symbol
*next
; /* -> next symbol in this obarray bucket */
633 /* This structure describes a built-in function.
634 It is generated by the DEFUN macro only.
635 defsubr makes it into a Lisp object.
637 This type is treated in most respects as a pseudovector,
638 but since we never dynamically allocate or free them,
639 we don't need a next-vector field. */
644 Lisp_Object (*function
) ();
645 short min_args
, max_args
;
651 /* These structures are used for various misc types. */
653 /* A miscellaneous object, when it's on the free list. */
656 int type
: 16; /* = Lisp_Misc_Free */
658 union Lisp_Misc
*chain
;
661 /* In a marker, the markbit of the chain field is used as the gc mark bit */
664 int type
: 16; /* = Lisp_Misc_Marker */
666 /* 1 means normal insertion at the marker's position
667 leaves the marker after the inserted text. */
668 int insertion_type
: 1;
669 struct buffer
*buffer
;
674 /* Forwarding pointer to an int variable.
675 This is allowed only in the value cell of a symbol,
676 and it means that the symbol's value really lives in the
677 specified int variable. */
680 int type
: 16; /* = Lisp_Misc_Intfwd */
685 /* Boolean forwarding pointer to an int variable.
686 This is like Lisp_Intfwd except that the ostensible
687 "value" of the symbol is t if the int variable is nonzero,
688 nil if it is zero. */
691 int type
: 16; /* = Lisp_Misc_Boolfwd */
696 /* Forwarding pointer to a Lisp_Object variable.
697 This is allowed only in the value cell of a symbol,
698 and it means that the symbol's value really lives in the
699 specified variable. */
702 int type
: 16; /* = Lisp_Misc_Objfwd */
707 /* Like Lisp_Objfwd except that value lives in a slot in the
708 current buffer. Value is byte index of slot within buffer. */
709 struct Lisp_Buffer_Objfwd
711 int type
: 16; /* = Lisp_Misc_Buffer_Objfwd */
716 /* Used in a symbol value cell when the symbol's value is per-buffer.
717 The actual contents resemble a cons cell which starts a list like this:
718 (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE).
720 The cons-like structure is for historical reasons; it might be better
721 to just put these elements into the struct, now.
723 BUFFER is the last buffer for which this symbol's value was
726 CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's
727 local_var_alist, that being the element whose car is this
728 variable. Or it can be a pointer to the
729 (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE),
730 if BUFFER does not have an element in its alist for this
731 variable (that is, if BUFFER sees the default value of this
734 If we want to examine or set the value and BUFFER is current,
735 we just examine or set REALVALUE. If BUFFER is not current, we
736 store the current REALVALUE value into CURRENT-ALIST-ELEMENT,
737 then find the appropriate alist element for the buffer now
738 current and set up CURRENT-ALIST-ELEMENT. Then we set
739 REALVALUE out of that element, and store into BUFFER.
741 If we are setting the variable and the current buffer does not
742 have an alist entry for this variable, an alist entry is
745 Note that REALVALUE can be a forwarding pointer. Each time it
746 is examined or set, forwarding must be done. Each time we
747 switch buffers, buffer-local variables which forward into C
748 variables are swapped immediately, so the C code can assume
749 that they are always up to date.
751 Lisp_Misc_Buffer_Local_Value and Lisp_Misc_Some_Buffer_Local_Value
752 use the same substructure. The difference is that with the latter,
753 merely setting the variable while some buffer is current
754 does not cause that buffer to have its own local value of this variable.
755 Only make-local-variable does that. */
756 struct Lisp_Buffer_Local_Value
758 int type
: 16; /* = Lisp_Misc_Buffer_Local_Value
759 or Lisp_Misc_Some_Buffer_Local_Value */
761 Lisp_Object car
, cdr
;
764 /* In an overlay object, the mark bit of the plist is used as the GC mark.
765 START and END are markers in the overlay's buffer, and
766 PLIST is the overlay's property list. */
769 int type
: 16; /* = Lisp_Misc_Overlay */
771 Lisp_Object start
, end
, plist
;
774 /* Like Lisp_Objfwd except that value lives in a slot in the
775 current perdisplay. */
776 struct Lisp_Display_Objfwd
778 int type
: 16; /* = Lisp_Misc_Display_Objfwd */
787 struct Lisp_Free u_free
;
788 struct Lisp_Marker u_marker
;
789 struct Lisp_Intfwd u_intfwd
;
790 struct Lisp_Boolfwd u_boolfwd
;
791 struct Lisp_Objfwd u_objfwd
;
792 struct Lisp_Buffer_Objfwd u_buffer_objfwd
;
793 struct Lisp_Buffer_Local_Value u_buffer_local_value
;
794 struct Lisp_Overlay u_overlay
;
795 struct Lisp_Display_Objfwd u_display_objfwd
;
798 #ifdef LISP_FLOAT_TYPE
799 /* Optional Lisp floating point type */
802 Lisp_Object type
; /* essentially used for mark-bit
803 and chaining when on free-list */
806 #endif /* LISP_FLOAT_TYPE */
808 /* A character, declared with the following typedef, is a member
809 of some character set associated with the current buffer. */
810 #ifndef _UCHAR_T /* Protect against something in ctab.h on AIX. */
812 typedef unsigned char UCHAR
;
815 /* Meanings of slots in a Lisp_Compiled: */
817 #define COMPILED_ARGLIST 0
818 #define COMPILED_BYTECODE 1
819 #define COMPILED_CONSTANTS 2
820 #define COMPILED_STACK_DEPTH 3
821 #define COMPILED_DOC_STRING 4
822 #define COMPILED_INTERACTIVE 5
824 /* Flag bits in a character. These also get used in termhooks.h.
825 Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE
826 (MUlti-Lingual Emacs) might need 22 bits for the character value
827 itself, so we probably shouldn't use any bits lower than 0x0400000. */
828 #define CHAR_ALT (0x0400000)
829 #define CHAR_SUPER (0x0800000)
830 #define CHAR_HYPER (0x1000000)
831 #define CHAR_SHIFT (0x2000000)
832 #define CHAR_CTL (0x4000000)
833 #define CHAR_META (0x8000000)
837 /* Use this for turning a (void *) into a Lisp_Object, as when the
838 Lisp_Object is passed into a toolkit callback function. */
839 #define VOID_TO_LISP(larg,varg) \
840 do { ((larg) = ((Lisp_Object) (varg))); } while (0)
841 #define CVOID_TO_LISP VOID_TO_LISP
843 /* Use this for turning a Lisp_Object into a (void *), as when the
844 Lisp_Object is passed into a toolkit callback function. */
845 #define LISP_TO_VOID(larg) ((void *) (larg))
846 #define LISP_TO_CVOID(varg) ((const void *) (larg))
848 #else /* not NO_UNION_TYPE */
849 /* Use this for turning a (void *) into a Lisp_Object, as when the
850 Lisp_Object is passed into a toolkit callback function. */
851 #define VOID_TO_LISP(larg,varg) \
852 do { ((larg).v = (void *) (varg)); } while (0)
853 #define CVOID_TO_LISP(larg,varg) \
854 do { ((larg).cv = (const void *) (varg)); } while (0)
856 /* Use this for turning a Lisp_Object into a (void *), as when the
857 Lisp_Object is passed into a toolkit callback function. */
858 #define LISP_TO_VOID(larg) ((larg).v)
859 #define LISP_TO_CVOID(larg) ((larg).cv)
860 #endif /* not NO_UNION_TYPE */
861 #endif /* USE_X_TOOLKIT */
864 /* The glyph datatype, used to represent characters on the display. */
866 /* The low eight bits are the character code, and the bits above them
867 are the numeric face ID. If FID is the face ID of a glyph on a
868 frame F, then F->display.x->faces[FID] contains the description of
869 that face. This is an int instead of a short, so we can support a
870 good bunch of face ID's; given that we have no mechanism for
871 tossing unused frame face ID's yet, we'll probably run out of 255
873 #define GLYPH unsigned int
876 /* The FAST macros assume that we already know we're in an X window. */
878 /* Given a character code and a face ID, return the appropriate glyph. */
879 #define FAST_MAKE_GLYPH(char, face) ((char) | ((face) << 8))
881 /* Return a glyph's character code. */
882 #define FAST_GLYPH_CHAR(glyph) ((glyph) & 0xff)
884 /* Return a glyph's face ID. */
885 #define FAST_GLYPH_FACE(glyph) (((glyph) >> 8) & ((1 << 24) - 1))
887 /* Slower versions that test the frame type first. */
888 #define MAKE_GLYPH(f, char, face) (FRAME_TERMCAP_P (f) ? (char) \
889 : FAST_MAKE_GLYPH (char, face))
890 #define GLYPH_CHAR(f, g) (FRAME_TERMCAP_P (f) ? (g) : FAST_GLYPH_CHAR (g))
891 #define GLYPH_FACE(f, g) (FRAME_TERMCAP_P (f) ? (0) : FAST_GLYPH_FACE (g))
892 #else /* not HAVE_FACES */
893 #define MAKE_GLYPH(f, char, face) (char)
894 #define GLYPH_CHAR(f, g) (g)
895 #define GLYPH_FACE(f, g) (g)
896 #endif /* not HAVE_FACES */
898 /* The ID of the mode line highlighting face. */
899 #define GLYPH_MODE_LINE_FACE 1
901 /* Data type checking */
903 #define NILP(x) (XFASTINT (x) == XFASTINT (Qnil))
904 #define GC_NILP(x) GC_EQ (x, Qnil)
906 #ifdef LISP_FLOAT_TYPE
907 #define NUMBERP(x) (INTEGERP (x) || FLOATP (x))
908 #define GC_NUMBERP(x) (GC_INTEGERP (x) || GC_FLOATP (x))
910 #define NUMBERP(x) (INTEGERP (x))
911 #define GC_NUMBERP(x) (GC_INTEGERP (x))
913 #define NATNUMP(x) (INTEGERP (x) && XINT (x) >= 0)
914 #define GC_NATNUMP(x) (GC_INTEGERP (x) && XINT (x) >= 0)
916 #define INTEGERP(x) (XTYPE ((x)) == Lisp_Int)
917 #define GC_INTEGERP(x) (XGCTYPE ((x)) == Lisp_Int)
918 #define SYMBOLP(x) (XTYPE ((x)) == Lisp_Symbol)
919 #define GC_SYMBOLP(x) (XGCTYPE ((x)) == Lisp_Symbol)
920 #define MISCP(x) (XTYPE ((x)) == Lisp_Misc)
921 #define GC_MISCP(x) (XGCTYPE ((x)) == Lisp_Misc)
922 #define VECTORLIKEP(x) (XTYPE ((x)) == Lisp_Vectorlike)
923 #define GC_VECTORLIKEP(x) (XGCTYPE ((x)) == Lisp_Vectorlike)
924 #define STRINGP(x) (XTYPE ((x)) == Lisp_String)
925 #define GC_STRINGP(x) (XGCTYPE ((x)) == Lisp_String)
926 #define CONSP(x) (XTYPE ((x)) == Lisp_Cons)
927 #define GC_CONSP(x) (XGCTYPE ((x)) == Lisp_Cons)
929 #ifdef LISP_FLOAT_TYPE
930 #define FLOATP(x) (XTYPE ((x)) == Lisp_Float)
931 #define GC_FLOATP(x) (XGCTYPE ((x)) == Lisp_Float)
933 #define FLOATP(x) (0)
934 #define GC_FLOATP(x) (0)
936 #define VECTORP(x) (VECTORLIKEP (x) && !(XVECTOR (x)->size & PSEUDOVECTOR_FLAG))
937 #define GC_VECTORP(x) (GC_VECTORLIKEP (x) && !(XVECTOR (x)->size & PSEUDOVECTOR_FLAG))
938 #define OVERLAYP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Overlay)
939 #define GC_OVERLAYP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Overlay)
940 #define MARKERP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Marker)
941 #define GC_MARKERP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Marker)
942 #define INTFWDP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Intfwd)
943 #define GC_INTFWDP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Intfwd)
944 #define BOOLFWDP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Boolfwd)
945 #define GC_BOOLFWDP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Boolfwd)
946 #define OBJFWDP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Objfwd)
947 #define GC_OBJFWDP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Objfwd)
948 #define BUFFER_OBJFWDP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Buffer_Objfwd)
949 #define GC_BUFFER_OBJFWDP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Buffer_Objfwd)
950 #define BUFFER_LOCAL_VALUEP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Buffer_Local_Value)
951 #define GC_BUFFER_LOCAL_VALUEP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Buffer_Local_Value)
952 #define SOME_BUFFER_LOCAL_VALUEP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Some_Buffer_Local_Value)
953 #define GC_SOME_BUFFER_LOCAL_VALUEP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Some_Buffer_Local_Value)
954 #define DISPLAY_OBJFWDP(x) (MISCP (x) && XMISC (x)->type == Lisp_Misc_Display_Objfwd)
955 #define GC_DISPLAY_OBJFWDP(x) (GC_MISCP (x) && XMISC (x)->type == Lisp_Misc_Display_Objfwd)
958 /* True if object X is a pseudovector whose code is CODE. */
959 #define PSEUDOVECTORP(x, code) \
961 && (((XVECTOR (x)->size & (PSEUDOVECTOR_FLAG | (code)))) \
962 == (PSEUDOVECTOR_FLAG | (code))))
964 /* True if object X is a pseudovector whose code is CODE.
965 This one works during GC. */
966 #define GC_PSEUDOVECTORP(x, code) \
967 (GC_VECTORLIKEP (x) \
968 && (((XVECTOR (x)->size & (PSEUDOVECTOR_FLAG | (code)))) \
969 == (PSEUDOVECTOR_FLAG | (code))))
971 /* Test for specific pseudovector types. */
972 #define WINDOW_CONFIGURATIONP(x) PSEUDOVECTORP (x, PVEC_WINDOW_CONFIGURATION)
973 #define GC_WINDOW_CONFIGURATIONP(x) GC_PSEUDOVECTORP (x, PVEC_WINDOW_CONFIGURATION)
974 #define PROCESSP(x) PSEUDOVECTORP (x, PVEC_PROCESS)
975 #define GC_PROCESSP(x) GC_PSEUDOVECTORP (x, PVEC_PROCESS)
976 #define WINDOWP(x) PSEUDOVECTORP (x, PVEC_WINDOW)
977 #define GC_WINDOWP(x) GC_PSEUDOVECTORP (x, PVEC_WINDOW)
978 #define SUBRP(x) PSEUDOVECTORP (x, PVEC_SUBR)
979 #define GC_SUBRP(x) GC_PSEUDOVECTORP (x, PVEC_SUBR)
980 #define COMPILEDP(x) PSEUDOVECTORP (x, PVEC_COMPILED)
981 #define GC_COMPILEDP(x) GC_PSEUDOVECTORP (x, PVEC_COMPILED)
982 #define BUFFERP(x) PSEUDOVECTORP (x, PVEC_BUFFER)
983 #define GC_BUFFERP(x) GC_PSEUDOVECTORP (x, PVEC_BUFFER)
986 #define FRAMEP(x) PSEUDOVECTORP (x, PVEC_FRAME)
987 #define GC_FRAMEP(x) GC_PSEUDOVECTORP (x, PVEC_FRAME)
990 /* We could use this in the !HAVE_MOUSE case also, but we prefer a compile-time
991 error message in case FRAMEP is used. */
992 #define FRAMEP(x) (EQ (x, Fselected_frame ()))
993 #define GC_FRAMEP(x) (GC_EQ (x, Fselected_frame ()))
998 #define EQ(x, y) (XFASTINT (x) == XFASTINT (y))
999 #define GC_EQ(x, y) (XGCTYPE (x) == XGCTYPE (y) && XPNTR (x) == XPNTR (y))
1001 #define CHECK_LIST(x, i) \
1002 do { if (!CONSP ((x)) && !NILP (x)) x = wrong_type_argument (Qlistp, (x)); } while (0)
1004 #define CHECK_STRING(x, i) \
1005 do { if (!STRINGP ((x))) x = wrong_type_argument (Qstringp, (x)); } while (0)
1007 #define CHECK_CONS(x, i) \
1008 do { if (!CONSP ((x))) x = wrong_type_argument (Qconsp, (x)); } while (0)
1010 #define CHECK_SYMBOL(x, i) \
1011 do { if (!SYMBOLP ((x))) x = wrong_type_argument (Qsymbolp, (x)); } while (0)
1013 #define CHECK_VECTOR(x, i) \
1014 do { if (!VECTORP ((x))) x = wrong_type_argument (Qvectorp, (x)); } while (0)
1016 #define CHECK_BUFFER(x, i) \
1017 do { if (!BUFFERP ((x))) x = wrong_type_argument (Qbufferp, (x)); } while (0)
1019 #define CHECK_WINDOW(x, i) \
1020 do { if (!WINDOWP ((x))) x = wrong_type_argument (Qwindowp, (x)); } while (0)
1022 /* This macro rejects windows on the interior of the window tree as
1023 "dead", which is what we want; this is an argument-checking macro, and
1024 the user should never get access to interior windows.
1026 A window of any sort, leaf or interior, is dead iff the buffer,
1027 vchild, and hchild members are all nil. */
1029 #define CHECK_LIVE_WINDOW(x, i) \
1031 if (!WINDOWP ((x)) \
1032 || NILP (XWINDOW ((x))->buffer)) \
1033 x = wrong_type_argument (Qwindow_live_p, (x)); \
1036 #define CHECK_PROCESS(x, i) \
1037 do { if (!PROCESSP ((x))) x = wrong_type_argument (Qprocessp, (x)); } while (0)
1039 #define CHECK_NUMBER(x, i) \
1040 do { if (!INTEGERP ((x))) x = wrong_type_argument (Qintegerp, (x)); } while (0)
1042 #define CHECK_NATNUM(x, i) \
1043 do { if (!NATNUMP (x)) x = wrong_type_argument (Qwholenump, (x)); } while (0)
1045 #define CHECK_MARKER(x, i) \
1046 do { if (!MARKERP ((x))) x = wrong_type_argument (Qmarkerp, (x)); } while (0)
1048 #define CHECK_NUMBER_COERCE_MARKER(x, i) \
1049 do { if (MARKERP ((x))) XSETFASTINT (x, marker_position (x)); \
1050 else if (!INTEGERP ((x))) x = wrong_type_argument (Qinteger_or_marker_p, (x)); } while (0)
1052 #ifdef LISP_FLOAT_TYPE
1058 #define XFLOATINT(n) extract_float((n))
1060 #define CHECK_FLOAT(x, i) \
1061 do { if (!FLOATP (x)) \
1062 x = wrong_type_argument (Qfloatp, (x)); } while (0)
1064 #define CHECK_NUMBER_OR_FLOAT(x, i) \
1065 do { if (!FLOATP (x) && !INTEGERP (x)) \
1066 x = wrong_type_argument (Qnumberp, (x)); } while (0)
1068 #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER(x, i) \
1069 do { if (MARKERP (x)) XSETFASTINT (x, marker_position (x)); \
1070 else if (!INTEGERP (x) && !FLOATP (x)) \
1071 x = wrong_type_argument (Qnumber_or_marker_p, (x)); } while (0)
1073 #else /* Not LISP_FLOAT_TYPE */
1075 #define CHECK_NUMBER_OR_FLOAT CHECK_NUMBER
1077 #define CHECK_NUMBER_OR_FLOAT_COERCE_MARKER CHECK_NUMBER_COERCE_MARKER
1079 #define XFLOATINT(n) XINT((n))
1080 #endif /* LISP_FLOAT_TYPE */
1082 #define CHECK_OVERLAY(x, i) \
1083 do { if (!OVERLAYP ((x))) x = wrong_type_argument (Qoverlayp, (x));} while (0)
1085 /* Cast pointers to this type to compare them. Some machines want int. */
1086 #ifndef PNTR_COMPARISON_TYPE
1087 #define PNTR_COMPARISON_TYPE unsigned int
1090 /* Define a built-in function for calling from Lisp.
1091 `lname' should be the name to give the function in Lisp,
1092 as a null-terminated C string.
1093 `fnname' should be the name of the function in C.
1094 By convention, it starts with F.
1095 `sname' should be the name for the C constant structure
1096 that records information on this function for internal use.
1097 By convention, it should be the same as `fnname' but with S instead of F.
1098 It's too bad that C macros can't compute this from `fnname'.
1099 `minargs' should be a number, the minimum number of arguments allowed.
1100 `maxargs' should be a number, the maximum number of arguments allowed,
1101 or else MANY or UNEVALLED.
1102 MANY means pass a vector of evaluated arguments,
1103 in the form of an integer number-of-arguments
1104 followed by the address of a vector of Lisp_Objects
1105 which contains the argument values.
1106 UNEVALLED means pass the list of unevaluated arguments
1107 `prompt' says how to read arguments for an interactive call.
1108 See the doc string for `interactive'.
1109 A null string means call interactively with no arguments.
1110 `doc' is documentation for the user. */
1112 #if !defined (__STDC__) || defined (USE_NONANSI_DEFUN)
1113 #define DEFUN(lname, fnname, sname, minargs, maxargs, prompt, doc) \
1114 Lisp_Object fnname (); \
1115 struct Lisp_Subr sname = \
1116 { PVEC_SUBR | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)), \
1117 fnname, minargs, maxargs, lname, prompt, 0}; \
1122 /* This version of DEFUN declares a function prototype with the right
1123 arguments, so we can catch errors with maxargs at compile-time. */
1124 #define DEFUN(lname, fnname, sname, minargs, maxargs, prompt, doc) \
1125 Lisp_Object fnname DEFUN_ARGS_ ## maxargs ; \
1126 struct Lisp_Subr sname = \
1127 { PVEC_SUBR | (sizeof (struct Lisp_Subr) / sizeof (EMACS_INT)), \
1128 fnname, minargs, maxargs, lname, prompt, 0}; \
1131 /* Note that the weird token-substitution semantics of ANSI C makes
1132 this work for MANY and UNEVALLED. */
1133 #define DEFUN_ARGS_MANY (int, Lisp_Object *)
1134 #define DEFUN_ARGS_UNEVALLED (Lisp_Object)
1135 #define DEFUN_ARGS_0 (void)
1136 #define DEFUN_ARGS_1 (Lisp_Object)
1137 #define DEFUN_ARGS_2 (Lisp_Object, Lisp_Object)
1138 #define DEFUN_ARGS_3 (Lisp_Object, Lisp_Object, Lisp_Object)
1139 #define DEFUN_ARGS_4 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object)
1140 #define DEFUN_ARGS_5 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1142 #define DEFUN_ARGS_6 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1143 Lisp_Object, Lisp_Object)
1144 #define DEFUN_ARGS_7 (Lisp_Object, Lisp_Object, Lisp_Object, Lisp_Object, \
1145 Lisp_Object, Lisp_Object, Lisp_Object)
1149 is how we define the symbol for function `name' at start-up time. */
1150 extern void defsubr ();
1153 #define UNEVALLED -1
1155 extern void defvar_lisp ();
1156 extern void defvar_bool ();
1157 extern void defvar_int ();
1158 extern void defvar_display ();
1160 /* Macros we use to define forwarded Lisp variables.
1161 These are used in the syms_of_FILENAME functions. */
1163 #define DEFVAR_LISP(lname, vname, doc) defvar_lisp (lname, vname)
1164 #define DEFVAR_LISP_NOPRO(lname, vname, doc) defvar_lisp_nopro (lname, vname)
1165 #define DEFVAR_BOOL(lname, vname, doc) defvar_bool (lname, vname)
1166 #define DEFVAR_INT(lname, vname, doc) defvar_int (lname, vname)
1167 #define DEFVAR_PER_BUFFER(lname, vname, type, doc) \
1168 defvar_per_buffer (lname, vname, type, 0)
1169 #define DEFVAR_DISPLAY(lname, vname, doc) \
1170 defvar_display (lname, \
1171 (int)((char *)(¤t_perdisplay->vname) \
1172 - (char *)current_perdisplay))
1174 /* Structure for recording Lisp call stack for backtrace purposes. */
1176 /* The special binding stack holds the outer values of variables while
1177 they are bound by a function application or a let form, stores the
1178 code to be executed for Lisp unwind-protect forms, and stores the C
1179 functions to be called for record_unwind_protect.
1181 If func is non-zero, undoing this binding applies func to old_value;
1182 This implements record_unwind_protect.
1183 If func is zero and symbol is nil, undoing this binding evaluates
1184 the list of forms in old_value; this implements Lisp's unwind-protect
1186 Otherwise, undoing this binding stores old_value as symbol's value; this
1187 undoes the bindings made by a let form or function call. */
1190 Lisp_Object symbol
, old_value
;
1191 Lisp_Object (*func
) ();
1192 Lisp_Object unused
; /* Dividing by 16 is faster than by 12 */
1195 extern struct specbinding
*specpdl
;
1196 extern struct specbinding
*specpdl_ptr
;
1197 extern int specpdl_size
;
1199 /* Everything needed to describe an active condition case. */
1202 /* The handler clauses and variable from the condition-case form. */
1203 Lisp_Object handler
;
1205 /* Fsignal stores here the condition-case clause that applies,
1206 and Fcondition_case thus knows which clause to run. */
1207 Lisp_Object chosen_clause
;
1209 /* Used to effect the longjump out to the handler. */
1210 struct catchtag
*tag
;
1212 /* The next enclosing handler. */
1213 struct handler
*next
;
1216 extern struct handler
*handlerlist
;
1218 extern struct catchtag
*catchlist
;
1219 extern struct backtrace
*backtrace_list
;
1221 extern Lisp_Object memory_signal_data
;
1223 /* An address near the bottom of the stack.
1224 Tells GC how to save a copy of the stack. */
1225 extern char *stack_bottom
;
1227 /* Check quit-flag and quit if it is non-nil. */
1230 if (!NILP (Vquit_flag) && NILP (Vinhibit_quit)) \
1231 { Vquit_flag = Qnil; Fsignal (Qquit, Qnil); }
1233 /* Nonzero if ought to quit now. */
1235 #define QUITP (!NILP (Vquit_flag) && NILP (Vinhibit_quit))
1237 /* 1 if CH is upper case. */
1239 #define UPPERCASEP(CH) \
1240 (XSTRING (current_buffer->downcase_table)->data[CH] != (CH))
1242 /* 1 if CH is lower case. */
1244 #define LOWERCASEP(CH) \
1246 && XSTRING (current_buffer->upcase_table)->data[CH] != (CH))
1248 /* 1 if CH is neither upper nor lower case. */
1250 #define NOCASEP(CH) (XSTRING (current_buffer->upcase_table)->data[CH] == (CH))
1252 /* Upcase a character, or make no change if that cannot be done. */
1254 #define UPCASE(CH) \
1255 (XSTRING (current_buffer->downcase_table)->data[CH] == (CH) \
1256 ? UPCASE1 (CH) : (CH))
1258 /* Upcase a character known to be not upper case. */
1260 #define UPCASE1(CH) (XSTRING (current_buffer->upcase_table)->data[CH])
1262 /* Downcase a character, or make no change if that cannot be done. */
1264 #define DOWNCASE(CH) (XSTRING (current_buffer->downcase_table)->data[CH])
1266 /* Current buffer's map from characters to lower-case characters. */
1268 #define DOWNCASE_TABLE XSTRING (current_buffer->downcase_table)->data
1270 /* Table mapping each char to the next char with the same lowercase version.
1271 This mapping is a no-op only for characters that don't have case. */
1272 #define UPCASE_TABLE XSTRING (current_buffer->upcase_table)->data
1274 extern Lisp_Object Vascii_downcase_table
, Vascii_upcase_table
;
1275 extern Lisp_Object Vascii_canon_table
, Vascii_eqv_table
;
1277 /* Number of bytes of structure consed since last GC. */
1279 extern int consing_since_gc
;
1281 /* Threshold for doing another gc. */
1283 extern int gc_cons_threshold
;
1285 /* Structure for recording stack slots that need marking. */
1287 /* This is a chain of structures, each of which points at a Lisp_Object variable
1288 whose value should be marked in garbage collection.
1289 Normally every link of the chain is an automatic variable of a function,
1290 and its `val' points to some argument or local variable of the function.
1291 On exit to the function, the chain is set back to the value it had on entry.
1292 This way, no link remains in the chain when the stack frame containing the
1295 Every function that can call Feval must protect in this fashion all
1296 Lisp_Object variables whose contents will be used again. */
1298 extern struct gcpro
*gcprolist
;
1303 Lisp_Object
*var
; /* Address of first protected variable */
1304 int nvars
; /* Number of consecutive protected variables */
1307 #define GCPRO1(varname) \
1308 {gcpro1.next = gcprolist; gcpro1.var = &varname; gcpro1.nvars = 1; \
1309 gcprolist = &gcpro1; }
1311 #define GCPRO2(varname1, varname2) \
1312 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
1313 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
1314 gcprolist = &gcpro2; }
1316 #define GCPRO3(varname1, varname2, varname3) \
1317 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
1318 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
1319 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
1320 gcprolist = &gcpro3; }
1322 #define GCPRO4(varname1, varname2, varname3, varname4) \
1323 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
1324 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
1325 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
1326 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
1327 gcprolist = &gcpro4; }
1329 #define GCPRO5(varname1, varname2, varname3, varname4, varname5) \
1330 {gcpro1.next = gcprolist; gcpro1.var = &varname1; gcpro1.nvars = 1; \
1331 gcpro2.next = &gcpro1; gcpro2.var = &varname2; gcpro2.nvars = 1; \
1332 gcpro3.next = &gcpro2; gcpro3.var = &varname3; gcpro3.nvars = 1; \
1333 gcpro4.next = &gcpro3; gcpro4.var = &varname4; gcpro4.nvars = 1; \
1334 gcpro5.next = &gcpro4; gcpro5.var = &varname5; gcpro5.nvars = 1; \
1335 gcprolist = &gcpro5; }
1337 /* Call staticpro (&var) to protect static variable `var'. */
1341 #define UNGCPRO (gcprolist = gcpro1.next)
1343 /* Evaluate expr, UNGCPRO, and then return the value of expr. */
1344 #define RETURN_UNGCPRO(expr) \
1347 Lisp_Object ret_ungc_val; \
1348 ret_ungc_val = (expr); \
1350 return ret_ungc_val; \
1354 /* Defined in data.c */
1355 extern Lisp_Object Qnil
, Qt
, Qquote
, Qlambda
, Qsubr
, Qunbound
;
1356 extern Lisp_Object Qerror_conditions
, Qerror_message
, Qtop_level
;
1357 extern Lisp_Object Qerror
, Qquit
, Qwrong_type_argument
, Qargs_out_of_range
;
1358 extern Lisp_Object Qvoid_variable
, Qvoid_function
;
1359 extern Lisp_Object Qsetting_constant
, Qinvalid_read_syntax
;
1360 extern Lisp_Object Qinvalid_function
, Qwrong_number_of_arguments
, Qno_catch
;
1361 extern Lisp_Object Qend_of_file
, Qarith_error
;
1362 extern Lisp_Object Qbeginning_of_buffer
, Qend_of_buffer
, Qbuffer_read_only
;
1363 extern Lisp_Object Qmark_inactive
;
1365 extern Lisp_Object Qrange_error
, Qdomain_error
, Qsingularity_error
;
1366 extern Lisp_Object Qoverflow_error
, Qunderflow_error
;
1368 extern Lisp_Object Qintegerp
, Qnumberp
, Qnatnump
, Qwholenump
;
1369 extern Lisp_Object Qsymbolp
, Qlistp
, Qconsp
;
1370 extern Lisp_Object Qstringp
, Qarrayp
, Qsequencep
, Qbufferp
;
1371 extern Lisp_Object Qchar_or_string_p
, Qmarkerp
, Qvectorp
;
1372 extern Lisp_Object Qinteger_or_marker_p
, Qnumber_or_marker_p
;
1373 extern Lisp_Object Qboundp
, Qfboundp
;
1374 extern Lisp_Object Qbuffer_or_string_p
;
1375 extern Lisp_Object Qcdr
;
1377 #ifdef LISP_FLOAT_TYPE
1378 extern Lisp_Object Qfloatp
, Qinteger_or_floatp
, Qinteger_or_float_or_marker_p
;
1379 #endif /* LISP_FLOAT_TYPE */
1381 extern Lisp_Object Qframep
;
1383 extern Lisp_Object
Feq (), Fnull (), Flistp (), Fconsp (), Fatom (), Fnlistp ();
1384 extern Lisp_Object
Fintegerp (), Fnatnump (), Fsymbolp ();
1385 extern Lisp_Object
Fvectorp (), Fstringp (), Farrayp (), Fsequencep ();
1386 extern Lisp_Object
Fbufferp (), Fmarkerp (), Fsubrp (), Fchar_or_string_p ();
1387 extern Lisp_Object
Finteger_or_marker_p ();
1388 #ifdef LISP_FLOAT_TYPE
1389 extern Lisp_Object
Ffloatp(), Finteger_or_floatp();
1390 extern Lisp_Object
Finteger_or_float_or_marker_p(), Ftruncate();
1391 #endif /* LISP_FLOAT_TYPE */
1393 extern Lisp_Object
Fcar (), Fcar_safe(), Fcdr (), Fcdr_safe();
1394 extern Lisp_Object
Fsetcar (), Fsetcdr ();
1395 extern Lisp_Object
Fboundp (), Ffboundp (), Fmakunbound (), Ffmakunbound ();
1396 extern Lisp_Object
Fsymbol_function (), Fsymbol_plist (), Fsymbol_name ();
1397 extern Lisp_Object
indirect_function (), Findirect_function ();
1398 extern Lisp_Object
Ffset (), Fsetplist ();
1399 extern Lisp_Object
Fsymbol_value (), find_symbol_value (), Fset ();
1400 extern Lisp_Object
Fdefault_value (), Fset_default (), Fdefault_boundp ();
1402 extern Lisp_Object
Faref (), Faset ();
1404 extern Lisp_Object
Fstring_to_number (), Fnumber_to_string ();
1405 extern Lisp_Object
Feqlsign (), Fgtr (), Flss (), Fgeq (), Fleq ();
1406 extern Lisp_Object
Fneq (), Fzerop ();
1407 extern Lisp_Object
Fplus (), Fminus (), Ftimes (), Fquo (), Frem ();
1408 extern Lisp_Object
Fmax (), Fmin ();
1409 extern Lisp_Object
Flogand (), Flogior (), Flogxor (), Flognot ();
1410 extern Lisp_Object
Flsh (), Fash ();
1412 extern Lisp_Object
Fadd1 (), Fsub1 ();
1414 extern Lisp_Object
make_number ();
1415 extern Lisp_Object
long_to_cons ();
1416 extern unsigned long cons_to_long ();
1417 extern void args_out_of_range ();
1418 extern void args_out_of_range_3 ();
1419 extern Lisp_Object
wrong_type_argument ();
1420 extern void store_symval_forwarding ();
1421 #ifdef LISP_FLOAT_TYPE
1422 extern Lisp_Object
Ffloat_to_int(), Fint_to_float();
1423 extern double extract_float();
1424 extern Lisp_Object
make_float ();
1425 extern Lisp_Object
Ffloat ();
1426 #endif /* LISP_FLOAT_TYPE */
1428 /* Defined in fns.c */
1429 extern Lisp_Object Qstring_lessp
;
1430 extern Lisp_Object Vfeatures
;
1431 extern Lisp_Object
Fidentity (), Frandom ();
1432 extern Lisp_Object
Flength ();
1433 extern Lisp_Object
Fappend (), Fconcat (), Fvconcat (), Fcopy_sequence ();
1434 extern Lisp_Object
Fsubstring ();
1435 extern Lisp_Object
Fnth (), Fnthcdr (), Fmemq (), Fassq (), Fassoc ();
1436 extern Lisp_Object
Fmember (), Frassq (), Fdelq (), Fsort ();
1437 extern Lisp_Object
Freverse (), Fnreverse (), Fget (), Fput (), Fequal ();
1438 extern Lisp_Object
Ffillarray (), Fnconc (), Fmapcar (), Fmapconcat ();
1439 extern Lisp_Object
Fy_or_n_p (), do_yes_or_no_p ();
1440 extern Lisp_Object
Ffeaturep (), Frequire () , Fprovide ();
1441 extern Lisp_Object
concat2 (), nconc2 ();
1442 extern Lisp_Object
assq_no_quit ();
1443 extern Lisp_Object
Fcopy_alist ();
1445 /* Defined in insdel.c */
1446 extern void move_gap ();
1447 extern void make_gap ();
1448 extern void insert ();
1449 extern void insert_and_inherit ();
1450 extern void insert_1 ();
1451 extern void insert_from_string ();
1452 extern void insert_from_buffer ();
1453 extern void insert_char ();
1454 extern void insert_string ();
1455 extern void insert_before_markers ();
1456 extern void insert_before_markers_and_inherit ();
1457 extern void insert_from_string_before_markers ();
1458 extern void del_range ();
1459 extern void del_range_1 ();
1460 extern void modify_region ();
1461 extern void prepare_to_modify_buffer ();
1462 extern void signal_before_change ();
1463 extern void signal_after_change ();
1465 /* Defined in xdisp.c */
1466 extern void message ();
1467 extern void message1 ();
1468 extern void message1_nolog ();
1469 extern void message2 ();
1470 extern void message2_nolog ();
1471 extern void message_dolog ();
1472 extern void message_log_maybe_newline ();
1474 /* Defined in alloc.c */
1475 extern Lisp_Object Vpurify_flag
;
1476 extern Lisp_Object
Fcons (), Flist(), Fmake_list (), allocate_misc ();
1477 extern Lisp_Object
Fmake_vector (), Fvector (), Fmake_symbol (), Fmake_marker ();
1478 extern Lisp_Object
Fmake_string (), build_string (), make_string ();
1479 extern Lisp_Object
make_event_array (), make_uninit_string ();
1480 extern Lisp_Object
Fpurecopy (), make_pure_string ();
1481 extern Lisp_Object
pure_cons (), make_pure_vector ();
1482 extern Lisp_Object
Fgarbage_collect ();
1483 extern Lisp_Object
Fmake_byte_code ();
1484 extern struct Lisp_Vector
*allocate_vectorlike ();
1485 extern int gc_in_progress
;
1487 /* Defined in print.c */
1488 extern Lisp_Object Vprin1_to_string_buffer
;
1489 extern Lisp_Object
Fprin1 (), Fprin1_to_string (), Fprinc ();
1490 extern Lisp_Object
Fterpri (), Fprint ();
1491 extern Lisp_Object Vstandard_output
, Qstandard_output
;
1492 extern Lisp_Object Qexternal_debugging_output
;
1493 extern void temp_output_buffer_setup (), temp_output_buffer_show ();
1494 extern int print_level
, print_escape_newlines
;
1495 extern Lisp_Object Qprint_escape_newlines
;
1497 /* Defined in lread.c */
1498 extern Lisp_Object Qvariable_documentation
, Qstandard_input
;
1499 extern Lisp_Object Vobarray
, Vstandard_input
;
1500 extern Lisp_Object
Fread (), Fread_from_string ();
1501 extern Lisp_Object
Fintern (), Fintern_soft (), Fload ();
1502 extern Lisp_Object
Fget_file_char (), Fread_char ();
1503 extern Lisp_Object
read_filtered_event ();
1504 extern Lisp_Object
Feval_current_buffer (), Feval_region ();
1505 extern Lisp_Object
intern (), oblookup ();
1506 #define LOADHIST_ATTACH(x) \
1507 if (initialized) Vcurrent_load_list = Fcons (x, Vcurrent_load_list)
1508 extern Lisp_Object Vcurrent_load_list
;
1509 extern Lisp_Object Vload_history
;
1511 /* Defined in eval.c */
1512 extern Lisp_Object Qautoload
, Qexit
, Qinteractive
, Qcommandp
, Qdefun
, Qmacro
;
1513 extern Lisp_Object Vinhibit_quit
, Qinhibit_quit
, Vquit_flag
;
1514 extern Lisp_Object Vmocklisp_arguments
, Qmocklisp
, Qmocklisp_arguments
;
1515 extern Lisp_Object Vautoload_queue
;
1516 extern Lisp_Object Vdebug_on_error
;
1517 /* To run a normal hook, do
1518 if (!NILP (Vrun_hooks))
1519 call1 (Vrun_hooks, Qmy_funny_hook); */
1520 extern Lisp_Object Vrun_hooks
;
1521 extern Lisp_Object
Fand (), For (), Fif (), Fprogn (), Fprog1 (), Fprog2 ();
1522 extern Lisp_Object
Fsetq (), Fquote ();
1523 extern Lisp_Object
Fuser_variable_p (), Finteractive_p ();
1524 extern Lisp_Object
Fdefun (), Flet (), FletX (), Fwhile ();
1525 extern Lisp_Object
Fcatch (), Fthrow (), Funwind_protect ();
1526 extern Lisp_Object
Fcondition_case (), Fsignal ();
1527 extern Lisp_Object
Ffunction_type (), Fautoload (), Fcommandp ();
1528 extern Lisp_Object
Feval (), Fapply (), Ffuncall ();
1529 extern Lisp_Object
Fglobal_set (), Fglobal_value (), Fbacktrace ();
1530 extern Lisp_Object
apply1 (), call0 (), call1 (), call2 (), call3 ();
1531 extern Lisp_Object
call4 (), call5 (), call6 ();
1532 extern Lisp_Object
Fkill_emacs (), Fkey_binding (), Fsit_for ();
1533 extern Lisp_Object
Fdo_auto_save (), Fset_marker ();
1534 extern Lisp_Object
apply_lambda ();
1535 extern Lisp_Object
internal_catch ();
1536 extern Lisp_Object
internal_condition_case ();
1537 extern Lisp_Object
internal_condition_case_1 ();
1538 extern Lisp_Object
unbind_to ();
1539 extern void error ();
1540 extern Lisp_Object
un_autoload ();
1542 /* Defined in editfns.c */
1543 extern Lisp_Object
Fgoto_char ();
1544 extern Lisp_Object
Fpoint_min_marker (), Fpoint_max_marker ();
1545 extern Lisp_Object
Fpoint_min (), Fpoint_max ();
1546 extern Lisp_Object
Fpoint (), Fpoint_marker (), Fmark_marker ();
1547 extern Lisp_Object
Ffollowing_char (), Fprevious_char (), Fchar_after ();
1548 extern Lisp_Object
Finsert ();
1549 extern Lisp_Object
Feolp (), Feobp (), Fbolp (), Fbobp ();
1550 extern Lisp_Object
Fformat (), format1 ();
1551 extern Lisp_Object
make_buffer_string (), Fbuffer_substring ();
1552 extern Lisp_Object
Fbuffer_string ();
1553 extern Lisp_Object
Fstring_equal (), Fstring_lessp (), Fbuffer_substring_lessp ();
1554 extern Lisp_Object
save_excursion_save (), save_restriction_save ();
1555 extern Lisp_Object
save_excursion_restore (), save_restriction_restore ();
1556 extern Lisp_Object
Fchar_to_string ();
1558 /* defined in buffer.c */
1559 extern Lisp_Object Vbuffer_alist
, Vinhibit_read_only
;
1560 extern Lisp_Object
Fget_buffer (), Fget_buffer_create (), Fset_buffer ();
1561 extern Lisp_Object
Fbarf_if_buffer_read_only ();
1562 extern Lisp_Object
Fcurrent_buffer (), Fswitch_to_buffer (), Fpop_to_buffer ();
1563 extern Lisp_Object
Fother_buffer ();
1564 extern Lisp_Object
Foverlay_get ();
1565 extern Lisp_Object Qoverlayp
;
1566 extern struct buffer
*all_buffers
;
1568 /* defined in marker.c */
1570 extern Lisp_Object
Fmarker_position (), Fmarker_buffer ();
1571 extern Lisp_Object
Fcopy_marker ();
1573 /* Defined in fileio.c */
1575 extern Lisp_Object Qfile_error
;
1576 extern Lisp_Object
Ffind_file_name_handler ();
1577 extern Lisp_Object
Ffile_name_as_directory ();
1578 extern Lisp_Object
Fexpand_file_name (), Ffile_name_nondirectory ();
1579 extern Lisp_Object
Fsubstitute_in_file_name ();
1580 extern Lisp_Object
Ffile_symlink_p ();
1581 extern Lisp_Object
Fverify_visited_file_modtime ();
1582 extern Lisp_Object
Ffile_exists_p ();
1583 extern Lisp_Object
Fdirectory_file_name ();
1584 extern Lisp_Object
Ffile_name_directory ();
1585 extern Lisp_Object
expand_and_dir_to_file ();
1586 extern Lisp_Object
Ffile_accessible_directory_p ();
1587 extern Lisp_Object
Funhandled_file_name_directory ();
1589 /* Defined in abbrev.c */
1591 extern Lisp_Object Vfundamental_mode_abbrev_table
;
1593 /* defined in search.c */
1594 extern Lisp_Object
Fstring_match ();
1595 extern Lisp_Object
Fscan_buffer ();
1596 extern void restore_match_data ();
1598 /* defined in minibuf.c */
1600 extern Lisp_Object last_minibuf_string
;
1601 extern Lisp_Object
read_minibuf (), Fcompleting_read ();
1602 extern Lisp_Object
Fread_from_minibuffer ();
1603 extern Lisp_Object
Fread_variable (), Fread_buffer (), Fread_key_sequence ();
1604 extern Lisp_Object
Fread_minibuffer (), Feval_minibuffer ();
1605 extern Lisp_Object
Fread_string (), Fread_file_name ();
1606 extern Lisp_Object
Fread_no_blanks_input ();
1608 /* Defined in callint.c */
1610 extern Lisp_Object Qminus
, Qplus
;
1611 extern Lisp_Object Vcommand_history
;
1612 extern Lisp_Object Qcall_interactively
;
1613 extern Lisp_Object
Fcall_interactively ();
1614 extern Lisp_Object
Fprefix_numeric_value ();
1616 /* defined in casefiddle.c */
1618 extern Lisp_Object
Fdowncase (), Fupcase (), Fcapitalize ();
1620 /* defined in keyboard.c */
1622 extern Lisp_Object Qdisabled
;
1623 extern Lisp_Object Vhelp_form
, Vtop_level
;
1624 extern Lisp_Object
Fdiscard_input (), Frecursive_edit ();
1625 extern Lisp_Object
Fcommand_execute (), Finput_pending_p ();
1626 extern Lisp_Object Qvertical_scroll_bar
;
1628 /* defined in keymap.c */
1630 extern Lisp_Object Qkeymap
, Qmenu_bar
;
1631 extern Lisp_Object current_global_map
;
1632 extern Lisp_Object
Fkey_description (), Fsingle_key_description ();
1633 extern Lisp_Object
Fwhere_is_internal ();
1634 extern Lisp_Object
access_keymap (), store_in_keymap ();
1635 extern Lisp_Object
get_keyelt (), get_keymap();
1637 /* defined in indent.c */
1638 extern Lisp_Object
Fvertical_motion (), Findent_to (), Fcurrent_column ();
1640 /* defined in window.c */
1641 extern Lisp_Object Qwindowp
, Qwindow_live_p
;
1642 extern Lisp_Object
Fget_buffer_window ();
1643 extern Lisp_Object
Fsave_window_excursion ();
1644 extern Lisp_Object
Fset_window_configuration (), Fcurrent_window_configuration ();
1645 extern Lisp_Object
Fcoordinates_in_window_p ();
1646 extern Lisp_Object
Fwindow_at ();
1647 extern int window_internal_height (), window_internal_width ();
1649 /* defined in frame.c */
1650 extern Lisp_Object Qvisible
;
1651 extern Lisp_Object
Fframep ();
1652 extern Lisp_Object
Fselect_frame ();
1653 extern Lisp_Object
Ffocus_frame ();
1654 extern Lisp_Object
Funfocus_frame ();
1655 extern Lisp_Object
Fselected_frame ();
1656 extern Lisp_Object
Fwindow_frame ();
1657 extern Lisp_Object
Fframe_root_window ();
1658 extern Lisp_Object
Fframe_selected_window ();
1659 extern Lisp_Object
Fframe_list ();
1660 extern Lisp_Object
Fnext_frame ();
1661 extern Lisp_Object
Fdelete_frame ();
1662 extern Lisp_Object
Fread_mouse_position ();
1663 extern Lisp_Object
Fset_mouse_position ();
1664 extern Lisp_Object
Fmake_frame_visible ();
1665 extern Lisp_Object
Fmake_frame_invisible ();
1666 extern Lisp_Object
Ficonify_frame ();
1667 extern Lisp_Object
Fdeiconify_frame ();
1668 extern Lisp_Object
Fframe_visible_p ();
1669 extern Lisp_Object
Fvisible_frame_list ();
1670 extern Lisp_Object
Fframe_parameters ();
1671 extern Lisp_Object
Fmodify_frame_parameters ();
1672 extern Lisp_Object
Fframe_pixel_size ();
1673 extern Lisp_Object
Fframe_height ();
1674 extern Lisp_Object
Fframe_width ();
1675 extern Lisp_Object
Fset_frame_height ();
1676 extern Lisp_Object
Fset_frame_width ();
1677 extern Lisp_Object
Fset_frame_size ();
1678 extern Lisp_Object
Fset_frame_position ();
1680 extern Lisp_Object
Frubber_band_rectangle ();
1681 #endif /* HAVE_X11 */
1683 /* defined in emacs.c */
1684 extern Lisp_Object
decode_env_path ();
1685 extern Lisp_Object Vinvocation_name
, Vinvocation_directory
;
1686 extern Lisp_Object Vinstallation_directory
;
1687 void shut_down_emacs ( /* int signal, int no_x, Lisp_Object stuff */ );
1688 /* Nonzero means don't do interactive redisplay and don't change tty modes */
1689 extern int noninteractive
;
1690 /* Nonzero means don't do use window-system-specific display code */
1691 extern int inhibit_window_system
;
1692 /* Nonzero means that a filter or a sentinel is running. */
1693 extern int running_asynch_code
;
1695 /* defined in process.c */
1696 extern Lisp_Object
Fget_process (), Fget_buffer_process (), Fprocessp ();
1697 extern Lisp_Object
Fprocess_status (), Fkill_process ();
1698 extern Lisp_Object
Fprocess_send_eof ();
1700 /* defined in callproc.c */
1701 extern Lisp_Object Vexec_path
, Vexec_directory
, Vdata_directory
;
1702 extern Lisp_Object Vdoc_directory
;
1704 /* defined in doc.c */
1705 extern Lisp_Object Vdoc_file_name
;
1706 extern Lisp_Object
Fsubstitute_command_keys ();
1707 extern Lisp_Object
Fdocumentation (), Fdocumentation_property ();
1709 /* defined in bytecode.c */
1710 extern Lisp_Object Qbytecode
;
1711 extern Lisp_Object
Fbyte_code ();
1713 /* defined in macros.c */
1714 extern Lisp_Object Qexecute_kbd_macro
;
1715 extern Lisp_Object
Fexecute_kbd_macro ();
1717 /* defined in undo.c */
1718 extern Lisp_Object
Fundo_boundary ();
1719 extern Lisp_Object
truncate_undo_list ();
1721 /* defined in textprop.c */
1722 extern Lisp_Object Qmodification_hooks
;
1723 extern Lisp_Object Qrear_nonsticky
;
1724 extern Lisp_Object Qinsert_in_front_hooks
, Qinsert_behind_hooks
;
1725 extern Lisp_Object
Fnext_property_change ();
1726 extern Lisp_Object
Fnext_single_property_change ();
1728 /* Nonzero means Emacs has already been initialized.
1729 Used during startup to detect startup of dumped Emacs. */
1730 extern int initialized
;
1732 extern int immediate_quit
; /* Nonzero means ^G can quit instantly */
1734 extern void debugger ();
1736 extern char *getenv (), *ctime (), *getwd ();
1737 extern long *xmalloc (), *xrealloc ();
1738 extern void xfree ();
1740 extern char *egetenv ();
1742 /* Set up the name of the machine we're running on. */
1743 extern void init_system_name ();
1745 /* Some systems (e.g., NT) use a different path separator than Unix,
1746 in addition to a device separator. Default the path separator
1747 to '/', and don't test for a device separator in IS_ANY_SEP. */
1749 #ifndef DIRECTORY_SEP
1750 #define DIRECTORY_SEP '/'
1752 #ifndef IS_DIRECTORY_SEP
1753 #define IS_DIRECTORY_SEP(_c_) ((_c_) == DIRECTORY_SEP)
1755 #ifndef IS_DEVICE_SEP
1757 #define IS_DEVICE_SEP(_c_) 0
1759 #define IS_DEVICE_SEP(_c_) ((_c_) == DEVICE_SEP)
1763 #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_))
1766 #ifdef SWITCH_ENUM_BUG
1767 #define SWITCH_ENUM_CAST(x) ((int)(x))
1769 #define SWITCH_ENUM_CAST(x) (x)