Mercurial > hg > xemacs-beta
annotate src/abbrev.c @ 5802:236e4afc565d
Autoload within #'keymapp, as documented.
src/ChangeLog addition:
2014-07-02 Aidan Kehoe <kehoea@parhasard.net>
* keymap.c (Fkeymapp):
Autoload within this, as documented. Our callers are not prepared
to do the intelligent thing if a symbol that is fboundp to an
autoloaded keymap, is not itself #'keymapp.
lisp/ChangeLog addition:
2014-07-02 Aidan Kehoe <kehoea@parhasard.net>
* byte-optimize.el (side-effect-free-fns):
#'keymapp is not side-effect-free, it can autoload.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 02 Jul 2014 17:45:49 +0100 |
| parents | 2014ff433daf |
| children |
| rev | line source |
|---|---|
| 428 | 1 /* Primitives for word-abbrev mode. |
| 2 Copyright (C) 1985, 1986, 1992, 1993 Free Software Foundation, Inc. | |
| 793 | 3 Copyright (C) 2002 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
|
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
|
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9 Free Software Foundation, either version 3 of the License, or (at your |
|
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10 option) any later version. |
| 428 | 11 |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
|
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* Synched up with: FSF 19.30. Note that there are many more functions in | |
| 21 FSF's abbrev.c. These have been moved into Lisp in XEmacs. */ | |
| 22 | |
| 23 /* Authorship: | |
| 24 | |
| 25 FSF: Original version; a long time ago. | |
| 26 JWZ or Mly: Mostly moved into Lisp; maybe 1992. | |
| 27 Ben Wing: Some changes for Mule for 19.12. | |
| 28 Hrvoje Niksic: Largely rewritten in June 1997. | |
| 29 */ | |
| 30 | |
| 31 /* This file has been Mule-ized. */ | |
| 32 | |
| 33 #include <config.h> | |
| 34 #include "lisp.h" | |
| 35 | |
| 36 #include "buffer.h" | |
| 37 #include "commands.h" | |
| 38 #include "insdel.h" | |
| 39 #include "syntax.h" | |
| 40 #include "window.h" | |
| 41 | |
| 42 /* An abbrev table is an obarray. | |
| 43 Each defined abbrev is represented by a symbol in that obarray | |
| 44 whose print name is the abbreviation. | |
| 45 The symbol's value is a string which is the expansion. | |
| 46 If its function definition is non-nil, it is called | |
| 47 after the expansion is done. | |
| 48 The plist slot of the abbrev symbol is its usage count. */ | |
| 49 | |
| 50 /* The table of global abbrevs. These are in effect | |
| 51 in any buffer in which abbrev mode is turned on. */ | |
| 52 Lisp_Object Vglobal_abbrev_table; | |
| 53 | |
| 54 int abbrev_all_caps; | |
| 55 | |
| 56 /* Non-nil => use this location as the start of abbrev to expand | |
| 57 (rather than taking the word before point as the abbrev) */ | |
| 58 Lisp_Object Vabbrev_start_location; | |
| 59 | |
| 60 /* Buffer that Vabbrev_start_location applies to */ | |
| 61 Lisp_Object Vabbrev_start_location_buffer; | |
| 62 | |
| 63 /* The symbol representing the abbrev most recently expanded */ | |
| 64 Lisp_Object Vlast_abbrev; | |
| 65 | |
| 66 /* A string for the actual text of the abbrev most recently expanded. | |
| 67 This has more info than Vlast_abbrev since case is significant. */ | |
| 68 Lisp_Object Vlast_abbrev_text; | |
| 69 | |
| 70 /* Character address of start of last abbrev expanded */ | |
| 458 | 71 Fixnum last_abbrev_location; |
| 428 | 72 |
| 73 /* Hook to run before expanding any abbrev. */ | |
| 74 Lisp_Object Vpre_abbrev_expand_hook, Qpre_abbrev_expand_hook; | |
| 75 | |
|
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76 Lisp_Object Qsystem_type; |
| 428 | 77 |
| 826 | 78 struct abbrev_match_mapper_closure |
| 79 { | |
| 428 | 80 struct buffer *buf; |
| 826 | 81 Lisp_Object chartab; |
| 814 | 82 Charbpos point; |
| 83 Charcount maxlen; | |
| 440 | 84 Lisp_Symbol *found; |
| 428 | 85 }; |
| 86 | |
| 87 /* For use by abbrev_match(): Match SYMBOL's name against buffer text | |
| 88 before point, case-insensitively. When found, return non-zero, so | |
| 89 that map_obarray terminates mapping. */ | |
| 90 static int | |
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91 abbrev_match_mapper (Lisp_Object UNUSED (key), Lisp_Object symbol, |
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92 void *arg) |
| 428 | 93 { |
| 94 struct abbrev_match_mapper_closure *closure = | |
| 95 (struct abbrev_match_mapper_closure *)arg; | |
| 96 Charcount abbrev_length; | |
| 440 | 97 Lisp_Symbol *sym = XSYMBOL (symbol); |
| 793 | 98 Lisp_Object abbrev; |
| 428 | 99 |
| 100 /* symbol_value should be OK here, because abbrevs are not expected | |
| 101 to contain any SYMBOL_MAGIC stuff. */ | |
| 102 if (UNBOUNDP (symbol_value (sym)) || NILP (symbol_value (sym))) | |
| 103 { | |
| 104 /* The symbol value of nil means that abbrev got undefined. */ | |
| 105 return 0; | |
| 106 } | |
| 107 abbrev = symbol_name (sym); | |
| 826 | 108 abbrev_length = string_char_length (abbrev); |
| 428 | 109 if (abbrev_length > closure->maxlen) |
| 110 { | |
| 111 /* This abbrev is too large -- it wouldn't fit. */ | |
| 112 return 0; | |
| 113 } | |
| 114 /* If `bar' is an abbrev, and a user presses `fubar<SPC>', we don't | |
| 115 normally want to expand it. OTOH, if the abbrev begins with | |
| 116 non-word syntax (e.g. `#if'), it is OK to abbreviate it anywhere. */ | |
| 117 if (abbrev_length < closure->maxlen && abbrev_length > 0 | |
| 867 | 118 && (WORD_SYNTAX_P (closure->chartab, string_ichar (abbrev, 0))) |
| 428 | 119 && (WORD_SYNTAX_P (closure->chartab, |
| 120 BUF_FETCH_CHAR (closure->buf, | |
| 793 | 121 closure->point - |
| 122 (abbrev_length + 1))))) | |
| 428 | 123 { |
| 124 return 0; | |
| 125 } | |
| 126 /* Match abbreviation string against buffer text. */ | |
| 127 { | |
| 867 | 128 Ibyte *ptr = XSTRING_DATA (abbrev); |
| 428 | 129 Charcount idx; |
| 130 | |
| 131 for (idx = 0; idx < abbrev_length; idx++) | |
| 132 { | |
|
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133 if (CANONCASE (closure->buf, |
| 428 | 134 BUF_FETCH_CHAR (closure->buf, |
| 135 closure->point - abbrev_length + idx)) | |
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136 != CANONCASE (closure->buf, itext_ichar (ptr))) |
| 428 | 137 { |
| 138 break; | |
| 139 } | |
| 867 | 140 INC_IBYTEPTR (ptr); |
| 428 | 141 } |
| 142 if (idx == abbrev_length) | |
| 143 { | |
| 144 /* This is the one. */ | |
| 145 closure->found = sym; | |
| 146 return 1; | |
| 147 } | |
| 148 } | |
| 149 return 0; | |
| 150 } | |
| 151 | |
| 152 /* Match the buffer text against names of symbols in obarray. Returns | |
| 153 the matching symbol, or 0 if not found. */ | |
| 440 | 154 static Lisp_Symbol * |
| 428 | 155 abbrev_match (struct buffer *buf, Lisp_Object obarray) |
| 156 { | |
| 157 struct abbrev_match_mapper_closure closure; | |
| 158 | |
| 159 /* Precalculate some stuff, so mapper function needn't to it in each | |
| 160 iteration. */ | |
| 161 closure.buf = buf; | |
| 162 closure.point = BUF_PT (buf); | |
| 163 closure.maxlen = closure.point - BUF_BEGV (buf); | |
| 826 | 164 closure.chartab = buf->mirror_syntax_table; |
| 428 | 165 closure.found = 0; |
| 166 | |
| 167 map_obarray (obarray, abbrev_match_mapper, &closure); | |
| 168 | |
| 169 return closure.found; | |
| 170 } | |
| 171 | |
| 172 /* Take the word before point (or Vabbrev_start_location, if non-nil), | |
| 173 and look it up in OBARRAY, and return the symbol (or zero). This | |
| 174 used to be the default method of searching, with the obvious | |
| 175 limitation that the abbrevs may consist only of word characters. | |
| 176 It is an order of magnitude faster than the proper abbrev_match(), | |
| 177 but then again, vi is an order of magnitude faster than Emacs. | |
| 178 | |
| 179 This speed difference should be unnoticeable, though. I have tested | |
| 180 the degenerated cases of thousands of abbrevs being defined, and | |
| 181 abbrev_match() was still fast enough for normal operation. */ | |
| 440 | 182 static Lisp_Symbol * |
| 428 | 183 abbrev_oblookup (struct buffer *buf, Lisp_Object obarray) |
| 184 { | |
| 665 | 185 Charbpos wordstart, wordend; |
| 867 | 186 Ibyte *word, *p; |
| 814 | 187 Charbpos idx; |
| 428 | 188 Lisp_Object lookup; |
| 189 | |
| 190 CHECK_VECTOR (obarray); | |
| 191 | |
| 192 if (!NILP (Vabbrev_start_location)) | |
| 193 { | |
| 194 wordstart = get_buffer_pos_char (buf, Vabbrev_start_location, | |
| 195 GB_COERCE_RANGE); | |
| 196 Vabbrev_start_location = Qnil; | |
| 197 #if 0 | |
| 198 /* Previously, abbrev-prefix-mark crockishly inserted a dash to | |
| 199 indicate the abbrev start point. It now uses an extent with | |
| 200 a begin glyph so there's no dash to remove. */ | |
| 201 if (wordstart != BUF_ZV (buf) | |
| 202 && BUF_FETCH_CHAR (buf, wordstart) == '-') | |
| 203 { | |
| 204 buffer_delete_range (buf, wordstart, wordstart + 1, 0); | |
| 205 } | |
| 206 #endif | |
| 207 wordend = BUF_PT (buf); | |
| 208 } | |
| 209 else | |
| 210 { | |
| 665 | 211 Charbpos point = BUF_PT (buf); |
| 428 | 212 |
| 213 wordstart = scan_words (buf, point, -1); | |
| 214 if (!wordstart) | |
| 215 return 0; | |
| 216 | |
| 217 wordend = scan_words (buf, wordstart, 1); | |
| 218 if (!wordend) | |
| 219 return 0; | |
| 220 if (wordend > BUF_ZV (buf)) | |
| 221 wordend = BUF_ZV (buf); | |
| 222 if (wordend > point) | |
| 223 wordend = point; | |
| 224 /* Unlike the original function, we allow expansion only after | |
| 225 the abbrev, not preceded by a number of spaces. This is | |
| 226 because of consistency with abbrev_match. */ | |
| 227 if (wordend < point) | |
| 228 return 0; | |
| 229 } | |
| 230 | |
| 231 if (wordend <= wordstart) | |
| 232 return 0; | |
| 233 | |
| 2367 | 234 p = word = alloca_ibytes (MAX_ICHAR_LEN * (wordend - wordstart)); |
| 428 | 235 for (idx = wordstart; idx < wordend; idx++) |
| 236 { | |
| 867 | 237 Ichar c = BUF_FETCH_CHAR (buf, idx); |
| 428 | 238 if (UPPERCASEP (buf, c)) |
| 239 c = DOWNCASE (buf, c); | |
| 867 | 240 p += set_itext_ichar (p, c); |
| 428 | 241 } |
| 242 lookup = oblookup (obarray, word, p - word); | |
| 243 if (SYMBOLP (lookup) && !NILP (symbol_value (XSYMBOL (lookup)))) | |
| 244 return XSYMBOL (lookup); | |
| 245 else | |
| 246 return NULL; | |
| 247 } | |
| 248 | |
| 249 /* Return non-zero if OBARRAY contains an interned symbol ` '. */ | |
| 250 static int | |
| 251 obarray_has_blank_p (Lisp_Object obarray) | |
| 252 { | |
| 867 | 253 return !ZEROP (oblookup (obarray, (Ibyte *)" ", 1)); |
| 428 | 254 } |
| 255 | |
| 256 /* Analyze case in the buffer substring, and report it. */ | |
| 257 static void | |
| 665 | 258 abbrev_count_case (struct buffer *buf, Charbpos pos, Charcount length, |
| 428 | 259 int *lccount, int *uccount) |
| 260 { | |
| 261 *lccount = *uccount = 0; | |
| 262 while (length--) | |
| 263 { | |
| 867 | 264 Ichar c = BUF_FETCH_CHAR (buf, pos); |
| 428 | 265 if (UPPERCASEP (buf, c)) |
| 266 ++*uccount; | |
| 267 else if (LOWERCASEP (buf, c)) | |
| 268 ++*lccount; | |
| 269 ++pos; | |
| 270 } | |
| 271 } | |
| 272 | |
| 273 DEFUN ("expand-abbrev", Fexpand_abbrev, 0, 0, "", /* | |
| 274 Expand the abbrev before point, if any. | |
| 275 Effective when explicitly called even when `abbrev-mode' is nil. | |
| 276 Returns the abbrev symbol, if expansion took place. | |
| 277 If no abbrev matched, but `pre-abbrev-expand-hook' changed the buffer, | |
| 278 returns t. | |
| 279 */ | |
| 280 ()) | |
| 281 { | |
| 282 /* This function can GC */ | |
| 283 struct buffer *buf = current_buffer; | |
| 284 int oldmodiff = BUF_MODIFF (buf); | |
| 285 Lisp_Object pre_modiff_p; | |
| 665 | 286 Charbpos point; /* position of point */ |
| 287 Charbpos abbrev_start; /* position of abbreviation beginning */ | |
| 428 | 288 |
| 440 | 289 Lisp_Symbol *(*fun) (struct buffer *, Lisp_Object); |
| 428 | 290 |
| 440 | 291 Lisp_Symbol *abbrev_symbol; |
| 428 | 292 Lisp_Object expansion, count, hook; |
| 293 Charcount abbrev_length; | |
| 294 int lccount, uccount; | |
| 295 | |
| 296 run_hook (Qpre_abbrev_expand_hook); | |
| 297 /* If the hook changes the buffer, treat that as having "done an | |
| 298 expansion". */ | |
| 299 pre_modiff_p = (BUF_MODIFF (buf) != oldmodiff ? Qt : Qnil); | |
| 300 | |
| 301 abbrev_symbol = NULL; | |
| 302 if (!BUFFERP (Vabbrev_start_location_buffer) || | |
| 303 XBUFFER (Vabbrev_start_location_buffer) != buf) | |
| 304 Vabbrev_start_location = Qnil; | |
| 305 /* We use the more general abbrev_match() if the obarray blank flag | |
| 306 is not set, and Vabbrev_start_location is nil. Otherwise, use | |
| 307 abbrev_oblookup(). */ | |
| 308 #define MATCHFUN(tbl) ((obarray_has_blank_p (tbl) \ | |
| 309 && NILP (Vabbrev_start_location)) \ | |
| 310 ? abbrev_match : abbrev_oblookup) | |
| 311 if (!NILP (buf->abbrev_table)) | |
| 312 { | |
| 313 fun = MATCHFUN (buf->abbrev_table); | |
| 314 abbrev_symbol = fun (buf, buf->abbrev_table); | |
| 315 } | |
| 316 if (!abbrev_symbol && !NILP (Vglobal_abbrev_table)) | |
| 317 { | |
| 318 fun = MATCHFUN (Vglobal_abbrev_table); | |
| 319 abbrev_symbol = fun (buf, Vglobal_abbrev_table); | |
| 320 } | |
| 321 if (!abbrev_symbol) | |
| 322 return pre_modiff_p; | |
| 323 | |
| 324 /* NOTE: we hope that `pre-abbrev-expand-hook' didn't do something | |
| 325 nasty, such as changed the buffer. Here we protect against the | |
| 326 buffer getting killed. */ | |
| 327 if (! BUFFER_LIVE_P (buf)) | |
| 328 return Qnil; | |
| 329 point = BUF_PT (buf); | |
| 330 | |
| 331 /* OK, we're out of the must-be-fast part. An abbreviation matched. | |
| 332 Now find the parameters, insert the expansion, and make it all | |
| 333 look pretty. */ | |
| 826 | 334 abbrev_length = string_char_length (symbol_name (abbrev_symbol)); |
| 428 | 335 abbrev_start = point - abbrev_length; |
| 336 | |
| 337 expansion = symbol_value (abbrev_symbol); | |
| 338 CHECK_STRING (expansion); | |
| 339 | |
| 340 count = symbol_plist (abbrev_symbol); /* Gag */ | |
| 341 if (NILP (count)) | |
| 342 count = Qzero; | |
| 343 else | |
| 344 CHECK_NATNUM (count); | |
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345 symbol_plist (abbrev_symbol) = Fadd1 (count); |
| 428 | 346 |
| 347 /* Count the case in the original text. */ | |
| 348 abbrev_count_case (buf, abbrev_start, abbrev_length, &lccount, &uccount); | |
| 349 | |
| 350 /* Remember the last abbrev text, location, etc. */ | |
| 793 | 351 Vlast_abbrev = wrap_symbol (abbrev_symbol); |
| 428 | 352 Vlast_abbrev_text = |
| 353 make_string_from_buffer (buf, abbrev_start, abbrev_length); | |
| 354 last_abbrev_location = abbrev_start; | |
| 355 | |
| 356 /* Add an undo boundary, in case we are doing this for a | |
| 357 self-inserting command which has avoided making one so far. */ | |
| 358 if (INTERACTIVE) | |
| 359 Fundo_boundary (); | |
| 360 | |
| 361 /* Remove the abbrev */ | |
| 362 buffer_delete_range (buf, abbrev_start, point, 0); | |
| 363 /* And insert the expansion. */ | |
| 364 buffer_insert_lisp_string (buf, expansion); | |
| 365 point = BUF_PT (buf); | |
| 366 | |
| 367 /* Now fiddle with the case. */ | |
| 368 if (uccount && !lccount) | |
| 369 { | |
| 370 /* Abbrev was all caps */ | |
| 371 if (!abbrev_all_caps | |
| 372 && scan_words (buf, point, -1) > scan_words (buf, abbrev_start, 1)) | |
| 373 { | |
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374 Fupcase_initials_region (make_fixnum (abbrev_start), make_fixnum (point), |
| 771 | 375 wrap_buffer (buf)); |
| 428 | 376 } |
| 377 else | |
| 378 { | |
| 379 /* If expansion is one word, or if user says so, upcase it all. */ | |
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380 Fupcase_region (make_fixnum (abbrev_start), make_fixnum (point), |
| 771 | 381 wrap_buffer (buf)); |
| 428 | 382 } |
| 383 } | |
| 384 else if (uccount) | |
| 385 { | |
| 386 /* Abbrev included some caps. Cap first initial of expansion */ | |
| 665 | 387 Charbpos pos = abbrev_start; |
| 428 | 388 /* Find the initial. */ |
| 389 while (pos < point | |
| 826 | 390 && !WORD_SYNTAX_P (buf->mirror_syntax_table, |
| 428 | 391 BUF_FETCH_CHAR (buf, pos))) |
| 392 pos++; | |
| 393 /* Change just that. */ | |
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394 Fupcase_initials_region (make_fixnum (pos), make_fixnum (pos + 1), |
| 771 | 395 wrap_buffer (buf)); |
| 428 | 396 } |
| 397 | |
| 398 hook = symbol_function (abbrev_symbol); | |
| 399 if (!NILP (hook) && !UNBOUNDP (hook)) | |
| 400 call0 (hook); | |
| 401 | |
| 402 return Vlast_abbrev; | |
| 403 } | |
| 404 | |
| 3965 | 405 static void |
| 406 write_abbrev (Lisp_Object sym, Lisp_Object stream) | |
| 407 { | |
| 408 Lisp_Object name, count, system_flag; | |
| 409 /* This function can GC */ | |
| 410 struct buffer *buf = current_buffer; | |
| 411 | |
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412 if (FIXNUMP (XSYMBOL (sym)->plist)) |
| 3965 | 413 { |
| 414 count = XSYMBOL (sym)->plist; | |
| 415 system_flag = Qnil; | |
| 416 } | |
| 417 else | |
| 418 { | |
| 419 count = Fget (sym, Qcount, Qunbound); | |
| 420 system_flag = Fget (sym, Qsystem_type, Qunbound); | |
| 421 } | |
| 422 | |
| 423 if (NILP (XSYMBOL_VALUE (sym)) || ! NILP (system_flag)) | |
| 424 return; | |
| 425 | |
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426 buffer_insert_ascstring (buf, " ("); |
| 3965 | 427 name = Fsymbol_name (sym); |
| 428 Fprin1 (name, stream); | |
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429 buffer_insert_ascstring (buf, " "); |
| 3965 | 430 Fprin1 (XSYMBOL_VALUE (sym), stream); |
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431 buffer_insert_ascstring (buf, " "); |
| 3965 | 432 Fprin1 (XSYMBOL (sym)->function, stream); |
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433 buffer_insert_ascstring (buf, " "); |
| 3965 | 434 Fprin1 (count, stream); |
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435 buffer_insert_ascstring (buf, ")\n"); |
| 3965 | 436 } |
| 437 | |
| 438 static void | |
| 439 describe_abbrev (Lisp_Object sym, Lisp_Object stream) | |
| 440 { | |
| 441 Lisp_Object one, count, system_flag; | |
| 442 /* This function can GC */ | |
| 443 struct buffer *buf = current_buffer; | |
| 444 | |
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445 if (FIXNUMP (XSYMBOL (sym)->plist)) |
| 3965 | 446 { |
| 447 count = XSYMBOL (sym)->plist; | |
| 448 system_flag = Qnil; | |
| 449 } | |
| 450 else | |
| 451 { | |
| 452 count = Fget (sym, Qcount, Qunbound); | |
| 453 system_flag = Fget (sym, Qsystem_type, Qunbound); | |
| 454 } | |
| 455 | |
| 456 if (NILP (XSYMBOL_VALUE (sym))) | |
| 457 return; | |
| 458 | |
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459 one = make_fixnum (1); |
| 3965 | 460 Fprin1 (Fsymbol_name (sym), stream); |
| 461 | |
| 462 if (!NILP (system_flag)) | |
| 463 { | |
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464 buffer_insert_ascstring (buf, " (sys)"); |
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465 Findent_to (make_fixnum (20), one, Qnil); |
| 3965 | 466 } |
| 467 else | |
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468 Findent_to (make_fixnum (15), one, Qnil); |
| 3965 | 469 |
| 470 Fprin1 (count, stream); | |
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471 Findent_to (make_fixnum (20), one, Qnil); |
| 3965 | 472 Fprin1 (XSYMBOL_VALUE (sym), stream); |
| 473 if (!NILP (XSYMBOL (sym)->function)) | |
| 474 { | |
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475 Findent_to (make_fixnum (45), one, Qnil); |
| 3965 | 476 Fprin1 (XSYMBOL (sym)->function, stream); |
| 477 } | |
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478 buffer_insert_ascstring (buf, "\n"); |
| 3965 | 479 } |
| 480 | |
| 481 static int | |
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482 record_symbol (Lisp_Object UNUSED (key), Lisp_Object sym, void *arg) |
| 3965 | 483 { |
| 484 Lisp_Object closure = * (Lisp_Object *) arg; | |
| 485 XSETCDR (closure, Fcons (sym, XCDR (closure))); | |
| 486 return 0; /* Never stop */ | |
| 487 } | |
| 488 | |
| 489 DEFUN ("insert-abbrev-table-description", Finsert_abbrev_table_description, | |
| 490 1, 2, 0, /* | |
| 491 Insert before point a full description of abbrev table named NAME. | |
| 492 NAME is a symbol whose value is an abbrev table. | |
| 493 If optional 2nd arg READABLE is non-nil, a human-readable description | |
| 494 is inserted. Otherwise the description is an expression, | |
| 495 a call to `define-abbrev-table', which would | |
| 496 define the abbrev table NAME exactly as it is currently defined. | |
| 497 | |
| 498 Abbrevs marked as "system abbrevs" are normally omitted. However, if | |
| 499 READABLE is non-nil, they are listed. */ | |
| 500 (name, readable)) | |
| 501 { | |
| 502 Lisp_Object table; | |
| 503 Lisp_Object symbols; | |
| 504 Lisp_Object stream; | |
| 505 /* This function can GC */ | |
| 506 struct buffer *buf = current_buffer; | |
| 507 | |
| 508 CHECK_SYMBOL (name); | |
| 509 table = Fsymbol_value (name); | |
| 510 CHECK_VECTOR (table); | |
| 511 | |
| 512 /* FIXME: what's the XEmacs equivalent? APA */ | |
| 513 /* XSETBUFFER (stream, current_buffer); */ | |
| 514 /* Does not seem to work: */ | |
| 515 /* Fset_buffer (stream); */ | |
| 516 stream = wrap_buffer (current_buffer); | |
| 517 | |
| 518 symbols = Fcons (Qnil, Qnil); | |
| 519 /* Lisp_Object closure = Fcons (Qnil, Qnil); */ | |
| 520 /* struct gcpro gcpro1; */ | |
| 521 /* GCPRO1 (closure); */ | |
| 522 /* map_obarray (table, record_symbol, symbols); */ | |
| 523 map_obarray (table, record_symbol, &symbols); | |
| 524 /* map_obarray (table, record_symbol, &closure); */ | |
| 525 symbols = XCDR (symbols); | |
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526 symbols = list_sort (symbols, check_string_lessp_nokey, Qnil, Qnil); |
| 3965 | 527 |
| 528 if (!NILP (readable)) | |
| 529 { | |
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530 buffer_insert_ascstring (buf, "("); |
| 3965 | 531 Fprin1 (name, stream); |
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532 buffer_insert_ascstring (buf, ")\n\n"); |
| 3965 | 533 while (! NILP (symbols)) |
| 534 { | |
| 535 describe_abbrev (XCAR (symbols), stream); | |
| 536 symbols = XCDR (symbols); | |
| 537 } | |
| 538 | |
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539 buffer_insert_ascstring (buf, "\n\n"); |
| 3965 | 540 } |
| 541 else | |
| 542 { | |
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543 buffer_insert_ascstring (buf, "(define-abbrev-table '"); |
| 3965 | 544 Fprin1 (name, stream); |
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545 buffer_insert_ascstring (buf, " '(\n"); |
| 3965 | 546 while (! NILP (symbols)) |
| 547 { | |
| 548 write_abbrev (XCAR (symbols), stream); | |
| 549 symbols = XCDR (symbols); | |
| 550 } | |
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551 buffer_insert_ascstring (buf, " ))\n\n"); |
| 3965 | 552 } |
| 553 | |
| 554 return Qnil; | |
| 555 } | |
| 428 | 556 |
| 557 void | |
| 558 syms_of_abbrev (void) | |
| 559 { | |
| 3965 | 560 DEFSYMBOL(Qsystem_type); |
| 561 Qsystem_type = intern ("system-type"); | |
| 563 | 562 DEFSYMBOL (Qpre_abbrev_expand_hook); |
| 428 | 563 DEFSUBR (Fexpand_abbrev); |
| 3965 | 564 DEFSUBR (Finsert_abbrev_table_description); |
| 428 | 565 } |
| 566 | |
| 567 void | |
| 568 vars_of_abbrev (void) | |
| 569 { | |
| 570 DEFVAR_LISP ("global-abbrev-table", &Vglobal_abbrev_table /* | |
| 571 The abbrev table whose abbrevs affect all buffers. | |
| 572 Each buffer may also have a local abbrev table. | |
| 573 If it does, the local table overrides the global one | |
| 574 for any particular abbrev defined in both. | |
| 575 */ ); | |
| 576 Vglobal_abbrev_table = Qnil; /* setup by Lisp code */ | |
| 577 | |
| 578 DEFVAR_LISP ("last-abbrev", &Vlast_abbrev /* | |
| 579 The abbrev-symbol of the last abbrev expanded. | |
| 580 See the function `abbrev-symbol'. | |
| 581 */ ); | |
| 582 | |
| 583 DEFVAR_LISP ("last-abbrev-text", &Vlast_abbrev_text /* | |
| 584 The exact text of the last abbrev expanded. | |
| 585 nil if the abbrev has already been unexpanded. | |
| 586 */ ); | |
| 587 | |
| 588 DEFVAR_INT ("last-abbrev-location", &last_abbrev_location /* | |
| 589 The location of the start of the last abbrev expanded. | |
| 590 */ ); | |
| 591 | |
| 592 Vlast_abbrev = Qnil; | |
| 593 Vlast_abbrev_text = Qnil; | |
| 594 last_abbrev_location = 0; | |
| 595 | |
| 596 DEFVAR_LISP ("abbrev-start-location", &Vabbrev_start_location /* | |
| 597 Buffer position for `expand-abbrev' to use as the start of the abbrev. | |
| 598 nil means use the word before point as the abbrev. | |
| 599 Calling `expand-abbrev' sets this to nil. | |
| 600 */ ); | |
| 601 Vabbrev_start_location = Qnil; | |
| 602 | |
| 603 DEFVAR_LISP ("abbrev-start-location-buffer", &Vabbrev_start_location_buffer /* | |
| 604 Buffer that `abbrev-start-location' has been set for. | |
| 605 Trying to expand an abbrev in any other buffer clears `abbrev-start-location'. | |
| 606 */ ); | |
| 607 Vabbrev_start_location_buffer = Qnil; | |
| 608 | |
| 609 DEFVAR_BOOL ("abbrev-all-caps", &abbrev_all_caps /* | |
| 610 *Non-nil means expand multi-word abbrevs all caps if abbrev was so. | |
| 611 */ ); | |
| 612 abbrev_all_caps = 0; | |
| 613 | |
| 614 DEFVAR_LISP ("pre-abbrev-expand-hook", &Vpre_abbrev_expand_hook /* | |
| 615 Function or functions to be called before abbrev expansion is done. | |
| 616 This is the first thing that `expand-abbrev' does, and so this may change | |
| 617 the current abbrev table before abbrev lookup happens. | |
| 618 */ ); | |
| 619 Vpre_abbrev_expand_hook = Qnil; | |
| 620 } |