1 /* Primitives for word-abbrev mode.
2 Copyright (C) 1985, 1986, 1993, 1996, 1998, 2001,02,03,04
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
33 /* An abbrev table is an obarray.
34 Each defined abbrev is represented by a symbol in that obarray
35 whose print name is the abbreviation.
36 The symbol's value is a string which is the expansion.
37 If its function definition is non-nil, it is called
38 after the expansion is done.
39 The plist slot of the abbrev symbol is its usage count. */
41 /* List of all abbrev-table name symbols:
42 symbols whose values are abbrev tables. */
44 Lisp_Object Vabbrev_table_name_list
;
46 /* The table of global abbrevs. These are in effect
47 in any buffer in which abbrev mode is turned on. */
49 Lisp_Object Vglobal_abbrev_table
;
51 /* The local abbrev table used by default (in Fundamental Mode buffers) */
53 Lisp_Object Vfundamental_mode_abbrev_table
;
55 /* Set nonzero when an abbrev definition is changed */
61 /* Non-nil => use this location as the start of abbrev to expand
62 (rather than taking the word before point as the abbrev) */
64 Lisp_Object Vabbrev_start_location
;
66 /* Buffer that Vabbrev_start_location applies to */
67 Lisp_Object Vabbrev_start_location_buffer
;
69 /* The symbol representing the abbrev most recently expanded */
71 Lisp_Object Vlast_abbrev
;
73 /* A string for the actual text of the abbrev most recently expanded.
74 This has more info than Vlast_abbrev since case is significant. */
76 Lisp_Object Vlast_abbrev_text
;
78 /* Character address of start of last abbrev expanded */
80 EMACS_INT last_abbrev_point
;
82 /* Hook to run before expanding any abbrev. */
84 Lisp_Object Vpre_abbrev_expand_hook
, Qpre_abbrev_expand_hook
;
86 Lisp_Object Qsystem_type
, Qcount
;
88 DEFUN ("make-abbrev-table", Fmake_abbrev_table
, Smake_abbrev_table
, 0, 0, 0,
89 doc
: /* Create a new, empty abbrev table object. */)
92 /* The value 59 is arbitrary chosen prime number. */
93 return Fmake_vector (make_number (59), make_number (0));
96 DEFUN ("clear-abbrev-table", Fclear_abbrev_table
, Sclear_abbrev_table
, 1, 1, 0,
97 doc
: /* Undefine all abbrevs in abbrev table TABLE, leaving it empty. */)
103 CHECK_VECTOR (table
);
104 size
= XVECTOR (table
)->size
;
106 for (i
= 0; i
< size
; i
++)
107 XVECTOR (table
)->contents
[i
] = make_number (0);
111 DEFUN ("define-abbrev", Fdefine_abbrev
, Sdefine_abbrev
, 3, 6, 0,
112 doc
: /* Define an abbrev in TABLE named NAME, to expand to EXPANSION and call HOOK.
113 NAME must be a string.
114 EXPANSION should usually be a string.
115 To undefine an abbrev, define it with EXPANSION = nil.
116 If HOOK is non-nil, it should be a function of no arguments;
117 it is called after EXPANSION is inserted.
118 If EXPANSION is not a string, the abbrev is a special one,
119 which does not expand in the usual way but only runs HOOK.
121 COUNT, if specified, gives the initial value for the abbrev's
122 usage-count, which is incremented each time the abbrev is used.
123 \(The default is zero.)
125 SYSTEM-FLAG, if non-nil, says that this is a "system" abbreviation
126 which should not be saved in the user's abbreviation file. */)
127 (table
, name
, expansion
, hook
, count
, system_flag
)
128 Lisp_Object table
, name
, expansion
, hook
, count
, system_flag
;
130 Lisp_Object sym
, oexp
, ohook
, tem
;
131 CHECK_VECTOR (table
);
135 count
= make_number (0);
137 CHECK_NUMBER (count
);
139 sym
= Fintern (name
, table
);
141 oexp
= SYMBOL_VALUE (sym
);
142 ohook
= XSYMBOL (sym
)->function
;
143 if (!((EQ (oexp
, expansion
)
144 || (STRINGP (oexp
) && STRINGP (expansion
)
145 && (tem
= Fstring_equal (oexp
, expansion
), !NILP (tem
))))
148 || (tem
= Fequal (ohook
, hook
), !NILP (tem
))))
149 && NILP (system_flag
))
152 Fset (sym
, expansion
);
155 if (! NILP (system_flag
))
156 Fsetplist (sym
, list4 (Qcount
, count
, Qsystem_type
, system_flag
));
158 Fsetplist (sym
, count
);
163 DEFUN ("define-global-abbrev", Fdefine_global_abbrev
, Sdefine_global_abbrev
, 2, 2,
164 "sDefine global abbrev: \nsExpansion for %s: ",
165 doc
: /* Define ABBREV as a global abbreviation for EXPANSION. */)
167 Lisp_Object abbrev
, expansion
;
169 Fdefine_abbrev (Vglobal_abbrev_table
, Fdowncase (abbrev
),
170 expansion
, Qnil
, make_number (0), Qnil
);
174 DEFUN ("define-mode-abbrev", Fdefine_mode_abbrev
, Sdefine_mode_abbrev
, 2, 2,
175 "sDefine mode abbrev: \nsExpansion for %s: ",
176 doc
: /* Define ABBREV as a mode-specific abbreviation for EXPANSION. */)
178 Lisp_Object abbrev
, expansion
;
180 if (NILP (current_buffer
->abbrev_table
))
181 error ("Major mode has no abbrev table");
183 Fdefine_abbrev (current_buffer
->abbrev_table
, Fdowncase (abbrev
),
184 expansion
, Qnil
, make_number (0), Qnil
);
188 DEFUN ("abbrev-symbol", Fabbrev_symbol
, Sabbrev_symbol
, 1, 2, 0,
189 doc
: /* Return the symbol representing abbrev named ABBREV.
190 This symbol's name is ABBREV, but it is not the canonical symbol of that name;
191 it is interned in an abbrev-table rather than the normal obarray.
192 The value is nil if that abbrev is not defined.
193 Optional second arg TABLE is abbrev table to look it up in.
194 The default is to try buffer's mode-specific abbrev table, then global table. */)
196 Lisp_Object abbrev
, table
;
199 CHECK_STRING (abbrev
);
201 sym
= Fintern_soft (abbrev
, table
);
205 if (!NILP (current_buffer
->abbrev_table
))
206 sym
= Fintern_soft (abbrev
, current_buffer
->abbrev_table
);
207 if (NILP (SYMBOL_VALUE (sym
)))
210 sym
= Fintern_soft (abbrev
, Vglobal_abbrev_table
);
212 if (NILP (SYMBOL_VALUE (sym
)))
217 DEFUN ("abbrev-expansion", Fabbrev_expansion
, Sabbrev_expansion
, 1, 2, 0,
218 doc
: /* Return the string that ABBREV expands into in the current buffer.
219 Optionally specify an abbrev table as second arg;
220 then ABBREV is looked up in that table only. */)
222 Lisp_Object abbrev
, table
;
225 sym
= Fabbrev_symbol (abbrev
, table
);
226 if (NILP (sym
)) return sym
;
227 return Fsymbol_value (sym
);
230 /* Expand the word before point, if it is an abbrev.
231 Returns 1 if an expansion is done. */
233 DEFUN ("expand-abbrev", Fexpand_abbrev
, Sexpand_abbrev
, 0, 0, "",
234 doc
: /* Expand the abbrev before point, if there is an abbrev there.
235 Effective when explicitly called even when `abbrev-mode' is nil.
236 Returns the abbrev symbol, if expansion took place. */)
239 register char *buffer
, *p
;
240 int wordstart
, wordend
;
241 register int wordstart_byte
, wordend_byte
, idx
, idx_byte
;
243 int uccount
= 0, lccount
= 0;
244 register Lisp_Object sym
;
245 Lisp_Object expansion
, hook
, tem
;
247 int multibyte
= ! NILP (current_buffer
->enable_multibyte_characters
);
251 Frun_hooks (1, &Qpre_abbrev_expand_hook
);
254 if (!(BUFFERP (Vabbrev_start_location_buffer
)
255 && XBUFFER (Vabbrev_start_location_buffer
) == current_buffer
))
256 Vabbrev_start_location
= Qnil
;
257 if (!NILP (Vabbrev_start_location
))
259 tem
= Vabbrev_start_location
;
260 CHECK_NUMBER_COERCE_MARKER (tem
);
261 wordstart
= XINT (tem
);
262 Vabbrev_start_location
= Qnil
;
263 if (wordstart
< BEGV
|| wordstart
> ZV
)
265 if (wordstart
&& wordstart
!= ZV
)
267 wordstart_byte
= CHAR_TO_BYTE (wordstart
);
268 if (FETCH_BYTE (wordstart_byte
) == '-')
269 del_range (wordstart
, wordstart
+ 1);
273 wordstart
= scan_words (PT
, -1);
278 wordstart_byte
= CHAR_TO_BYTE (wordstart
);
279 wordend
= scan_words (wordstart
, 1);
286 wordend_byte
= CHAR_TO_BYTE (wordend
);
287 whitecnt
= PT
- wordend
;
288 if (wordend
<= wordstart
)
291 p
= buffer
= (char *) alloca (wordend_byte
- wordstart_byte
);
293 for (idx
= wordstart
, idx_byte
= wordstart_byte
; idx
< wordend
; )
299 FETCH_CHAR_ADVANCE (c
, idx
, idx_byte
);
303 c
= FETCH_BYTE (idx_byte
);
308 c
= DOWNCASE (c
), uccount
++;
309 else if (! NOCASEP (c
))
312 p
+= CHAR_STRING (c
, p
);
317 if (VECTORP (current_buffer
->abbrev_table
))
318 sym
= oblookup (current_buffer
->abbrev_table
, buffer
,
319 wordend
- wordstart
, p
- buffer
);
321 XSETFASTINT (sym
, 0);
323 if (INTEGERP (sym
) || NILP (SYMBOL_VALUE (sym
)))
324 sym
= oblookup (Vglobal_abbrev_table
, buffer
,
325 wordend
- wordstart
, p
- buffer
);
326 if (INTEGERP (sym
) || NILP (SYMBOL_VALUE (sym
)))
329 if (INTERACTIVE
&& !EQ (minibuf_window
, selected_window
))
331 /* Add an undo boundary, in case we are doing this for
332 a self-inserting command which has avoided making one so far. */
338 = Fbuffer_substring (make_number (wordstart
), make_number (wordend
));
340 /* Now sym is the abbrev symbol. */
343 last_abbrev_point
= wordstart
;
345 /* Increment use count. */
346 if (INTEGERP (XSYMBOL (sym
)->plist
))
347 XSETINT (XSYMBOL (sym
)->plist
,
348 XINT (XSYMBOL (sym
)->plist
) + 1);
349 else if (INTEGERP (tem
= Fget (sym
, Qcount
)))
350 Fput (sym
, Qcount
, make_number (XINT (tem
) + 1));
352 /* If this abbrev has an expansion, delete the abbrev
353 and insert the expansion. */
354 expansion
= SYMBOL_VALUE (sym
);
355 if (STRINGP (expansion
))
359 insert_from_string (expansion
, 0, 0, SCHARS (expansion
),
360 SBYTES (expansion
), 1);
361 del_range_both (PT
, PT_BYTE
,
362 wordend
+ (PT
- wordstart
),
363 wordend_byte
+ (PT_BYTE
- wordstart_byte
),
366 SET_PT (PT
+ whitecnt
);
368 if (uccount
&& !lccount
)
370 /* Abbrev was all caps */
371 /* If expansion is multiple words, normally capitalize each word */
372 /* This used to be if (!... && ... >= ...) Fcapitalize; else Fupcase
373 but Megatest 68000 compiler can't handle that */
374 if (!abbrev_all_caps
)
375 if (scan_words (PT
, -1) > scan_words (wordstart
, 1))
377 Fupcase_initials_region (make_number (wordstart
),
381 /* If expansion is one word, or if user says so, upcase it all. */
382 Fupcase_region (make_number (wordstart
), make_number (PT
));
387 /* Abbrev included some caps. Cap first initial of expansion */
388 int pos
= wordstart_byte
;
390 /* Find the initial. */
392 && SYNTAX (*BUF_BYTE_ADDRESS (current_buffer
, pos
)) != Sword
)
395 /* Change just that. */
396 pos
= BYTE_TO_CHAR (pos
);
397 Fupcase_initials_region (make_number (pos
), make_number (pos
+ 1));
401 hook
= XSYMBOL (sym
)->function
;
404 Lisp_Object expanded
, prop
;
406 /* If the abbrev has a hook function, run it. */
407 expanded
= call0 (hook
);
409 /* In addition, if the hook function is a symbol with
410 a non-nil `no-self-insert' property, let the value it returned
411 specify whether we consider that an expansion took place. If
412 it returns nil, no expansion has been done. */
416 && (prop
= Fget (hook
, intern ("no-self-insert")),
424 DEFUN ("unexpand-abbrev", Funexpand_abbrev
, Sunexpand_abbrev
, 0, 0, "",
425 doc
: /* Undo the expansion of the last abbrev that expanded.
426 This differs from ordinary undo in that other editing done since then
432 if (last_abbrev_point
< BEGV
433 || last_abbrev_point
> ZV
)
435 SET_PT (last_abbrev_point
);
436 if (STRINGP (Vlast_abbrev_text
))
438 /* This isn't correct if Vlast_abbrev->function was used
439 to do the expansion */
443 val
= SYMBOL_VALUE (Vlast_abbrev
);
445 error ("Value of `abbrev-symbol' must be a string");
447 del_range_byte (PT_BYTE
, PT_BYTE
+ SBYTES (val
), 1);
448 /* Don't inherit properties here; just copy from old contents. */
449 insert_from_string (Vlast_abbrev_text
, 0, 0,
450 SCHARS (Vlast_abbrev_text
),
451 SBYTES (Vlast_abbrev_text
), 0);
452 Vlast_abbrev_text
= Qnil
;
453 /* Total number of characters deleted. */
454 adjust
= ZV
- zv_before
;
456 SET_PT (last_abbrev_point
< opoint
? opoint
+ adjust
: opoint
);
461 write_abbrev (sym
, stream
)
462 Lisp_Object sym
, stream
;
464 Lisp_Object name
, count
, system_flag
;
466 if (INTEGERP (XSYMBOL (sym
)->plist
))
468 count
= XSYMBOL (sym
)->plist
;
473 count
= Fget (sym
, Qcount
);
474 system_flag
= Fget (sym
, Qsystem_type
);
477 if (NILP (SYMBOL_VALUE (sym
)) || ! NILP (system_flag
))
481 name
= SYMBOL_NAME (sym
);
482 Fprin1 (name
, stream
);
484 Fprin1 (SYMBOL_VALUE (sym
), stream
);
486 Fprin1 (XSYMBOL (sym
)->function
, stream
);
488 Fprin1 (count
, stream
);
493 describe_abbrev (sym
, stream
)
494 Lisp_Object sym
, stream
;
496 Lisp_Object one
, count
, system_flag
;
498 if (INTEGERP (XSYMBOL (sym
)->plist
))
500 count
= XSYMBOL (sym
)->plist
;
505 count
= Fget (sym
, Qcount
);
506 system_flag
= Fget (sym
, Qsystem_type
);
509 if (NILP (SYMBOL_VALUE (sym
)))
512 one
= make_number (1);
513 Fprin1 (Fsymbol_name (sym
), stream
);
515 if (!NILP (system_flag
))
517 insert_string (" (sys)");
518 Findent_to (make_number (20), one
);
521 Findent_to (make_number (15), one
);
523 Fprin1 (count
, stream
);
524 Findent_to (make_number (20), one
);
525 Fprin1 (SYMBOL_VALUE (sym
), stream
);
526 if (!NILP (XSYMBOL (sym
)->function
))
528 Findent_to (make_number (45), one
);
529 Fprin1 (XSYMBOL (sym
)->function
, stream
);
534 DEFUN ("insert-abbrev-table-description", Finsert_abbrev_table_description
,
535 Sinsert_abbrev_table_description
, 1, 2, 0,
536 doc
: /* Insert before point a full description of abbrev table named NAME.
537 NAME is a symbol whose value is an abbrev table.
538 If optional 2nd arg READABLE is non-nil, a human-readable description
539 is inserted. Otherwise the description is an expression,
540 a call to `define-abbrev-table', which would
541 define the abbrev table NAME exactly as it is currently defined.
543 Abbrevs marked as "system abbrevs" are normally omitted. However, if
544 READABLE is non-nil, they are listed. */)
546 Lisp_Object name
, readable
;
552 table
= Fsymbol_value (name
);
553 CHECK_VECTOR (table
);
555 XSETBUFFER (stream
, current_buffer
);
557 if (!NILP (readable
))
560 Fprin1 (name
, stream
);
561 insert_string (")\n\n");
562 map_obarray (table
, describe_abbrev
, stream
);
563 insert_string ("\n\n");
567 insert_string ("(define-abbrev-table '");
568 Fprin1 (name
, stream
);
569 insert_string (" '(\n");
570 map_obarray (table
, write_abbrev
, stream
);
571 insert_string (" ))\n\n");
577 DEFUN ("define-abbrev-table", Fdefine_abbrev_table
, Sdefine_abbrev_table
,
579 doc
: /* Define TABLENAME (a symbol) as an abbrev table name.
580 Define abbrevs in it according to DEFINITIONS, which is a list of elements
581 of the form (ABBREVNAME EXPANSION HOOK USECOUNT SYSTEMFLAG).
582 \(If the list is shorter than that, omitted elements default to nil). */)
583 (tablename
, definitions
)
584 Lisp_Object tablename
, definitions
;
586 Lisp_Object name
, exp
, hook
, count
;
587 Lisp_Object table
, elt
, sys
;
589 CHECK_SYMBOL (tablename
);
590 table
= Fboundp (tablename
);
591 if (NILP (table
) || (table
= Fsymbol_value (tablename
), NILP (table
)))
593 table
= Fmake_abbrev_table ();
594 Fset (tablename
, table
);
595 Vabbrev_table_name_list
= Fcons (tablename
, Vabbrev_table_name_list
);
597 CHECK_VECTOR (table
);
599 for (; CONSP (definitions
); definitions
= XCDR (definitions
))
601 elt
= XCAR (definitions
);
602 name
= Fcar (elt
); elt
= Fcdr (elt
);
603 exp
= Fcar (elt
); elt
= Fcdr (elt
);
604 hook
= Fcar (elt
); elt
= Fcdr (elt
);
605 count
= Fcar (elt
); elt
= Fcdr (elt
);
607 Fdefine_abbrev (table
, name
, exp
, hook
, count
, sys
);
615 Qsystem_type
= intern ("system-type");
616 staticpro (&Qsystem_type
);
618 Qcount
= intern ("count");
621 DEFVAR_LISP ("abbrev-table-name-list", &Vabbrev_table_name_list
,
622 doc
: /* List of symbols whose values are abbrev tables. */);
623 Vabbrev_table_name_list
= Fcons (intern ("fundamental-mode-abbrev-table"),
624 Fcons (intern ("global-abbrev-table"),
627 DEFVAR_LISP ("global-abbrev-table", &Vglobal_abbrev_table
,
628 doc
: /* The abbrev table whose abbrevs affect all buffers.
629 Each buffer may also have a local abbrev table.
630 If it does, the local table overrides the global one
631 for any particular abbrev defined in both. */);
632 Vglobal_abbrev_table
= Fmake_abbrev_table ();
634 DEFVAR_LISP ("fundamental-mode-abbrev-table", &Vfundamental_mode_abbrev_table
,
635 doc
: /* The abbrev table of mode-specific abbrevs for Fundamental Mode. */);
636 Vfundamental_mode_abbrev_table
= Fmake_abbrev_table ();
637 current_buffer
->abbrev_table
= Vfundamental_mode_abbrev_table
;
638 buffer_defaults
.abbrev_table
= Vfundamental_mode_abbrev_table
;
640 DEFVAR_LISP ("last-abbrev", &Vlast_abbrev
,
641 doc
: /* The abbrev-symbol of the last abbrev expanded. See `abbrev-symbol'. */);
643 DEFVAR_LISP ("last-abbrev-text", &Vlast_abbrev_text
,
644 doc
: /* The exact text of the last abbrev expanded.
645 nil if the abbrev has already been unexpanded. */);
647 DEFVAR_INT ("last-abbrev-location", &last_abbrev_point
,
648 doc
: /* The location of the start of the last abbrev expanded. */);
651 Vlast_abbrev_text
= Qnil
;
652 last_abbrev_point
= 0;
654 DEFVAR_LISP ("abbrev-start-location", &Vabbrev_start_location
,
655 doc
: /* Buffer position for `expand-abbrev' to use as the start of the abbrev.
656 When nil, use the word before point as the abbrev.
657 Calling `expand-abbrev' sets this to nil. */);
658 Vabbrev_start_location
= Qnil
;
660 DEFVAR_LISP ("abbrev-start-location-buffer", &Vabbrev_start_location_buffer
,
661 doc
: /* Buffer that `abbrev-start-location' has been set for.
662 Trying to expand an abbrev in any other buffer clears `abbrev-start-location'. */);
663 Vabbrev_start_location_buffer
= Qnil
;
665 DEFVAR_PER_BUFFER ("local-abbrev-table", ¤t_buffer
->abbrev_table
, Qnil
,
666 doc
: /* Local (mode-specific) abbrev table of current buffer. */);
668 DEFVAR_BOOL ("abbrevs-changed", &abbrevs_changed
,
669 doc
: /* Set non-nil by defining or altering any word abbrevs.
670 This causes `save-some-buffers' to offer to save the abbrevs. */);
673 DEFVAR_BOOL ("abbrev-all-caps", &abbrev_all_caps
,
674 doc
: /* *Set non-nil means expand multi-word abbrevs all caps if abbrev was so. */);
677 DEFVAR_LISP ("pre-abbrev-expand-hook", &Vpre_abbrev_expand_hook
,
678 doc
: /* Function or functions to be called before abbrev expansion is done.
679 This is the first thing that `expand-abbrev' does, and so this may change
680 the current abbrev table before abbrev lookup happens. */);
681 Vpre_abbrev_expand_hook
= Qnil
;
682 Qpre_abbrev_expand_hook
= intern ("pre-abbrev-expand-hook");
683 staticpro (&Qpre_abbrev_expand_hook
);
685 defsubr (&Smake_abbrev_table
);
686 defsubr (&Sclear_abbrev_table
);
687 defsubr (&Sdefine_abbrev
);
688 defsubr (&Sdefine_global_abbrev
);
689 defsubr (&Sdefine_mode_abbrev
);
690 defsubr (&Sabbrev_expansion
);
691 defsubr (&Sabbrev_symbol
);
692 defsubr (&Sexpand_abbrev
);
693 defsubr (&Sunexpand_abbrev
);
694 defsubr (&Sinsert_abbrev_table_description
);
695 defsubr (&Sdefine_abbrev_table
);
698 /* arch-tag: b721db69-f633-44a8-a361-c275acbdad7d
699 (do not change this comment) */