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4ed46869 | 1 | /* GNU Emacs routines to deal with category tables. |
95df8112 GM |
2 | |
3 | Copyright (C) 1998, 2001-2011 Free Software Foundation, Inc. | |
4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
5 | 2005, 2006, 2007, 2008, 2009, 2010, 2011 | |
6 | National Institute of Advanced Industrial Science and Technology (AIST) | |
7 | Registration Number H14PRO021 | |
8 | Copyright (C) 2003 | |
9 | National Institute of Advanced Industrial Science and Technology (AIST) | |
10 | Registration Number H13PRO009 | |
4ed46869 KH |
11 | |
12 | This file is part of GNU Emacs. | |
13 | ||
9ec0b715 | 14 | GNU Emacs is free software: you can redistribute it and/or modify |
4ed46869 | 15 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
16 | the Free Software Foundation, either version 3 of the License, or |
17 | (at your option) any later version. | |
4ed46869 KH |
18 | |
19 | GNU Emacs is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 25 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ed46869 KH |
26 | |
27 | ||
28 | /* Here we handle three objects: category, category set, and category | |
29 | table. Read comments in the file category.h to understand them. */ | |
30 | ||
31 | #include <config.h> | |
32 | #include <ctype.h> | |
d7306fe6 | 33 | #include <setjmp.h> |
4ed46869 KH |
34 | #include "lisp.h" |
35 | #include "buffer.h" | |
ea012abd | 36 | #include "character.h" |
4ed46869 KH |
37 | #include "charset.h" |
38 | #include "category.h" | |
e35f6ff7 | 39 | #include "keymap.h" |
4ed46869 KH |
40 | |
41 | /* The version number of the latest category table. Each category | |
42 | table has a unique version number. It is assigned a new number | |
43 | also when it is modified. When a regular expression is compiled | |
44 | into the struct re_pattern_buffer, the version number of the | |
45 | category table (of the current buffer) at that moment is also | |
46 | embedded in the structure. | |
47 | ||
48 | For the moment, we are not using this feature. */ | |
49 | static int category_table_version; | |
50 | ||
955cbe7b | 51 | static Lisp_Object Qcategory_table, Qcategoryp, Qcategorysetp, Qcategory_table_p; |
4ed46869 | 52 | |
4ed46869 KH |
53 | /* Temporary internal variable used in macro CHAR_HAS_CATEGORY. */ |
54 | Lisp_Object _temp_category_set; | |
55 | ||
56 | \f | |
57 | /* Category set staff. */ | |
58 | ||
f57e2426 | 59 | static Lisp_Object hash_get_category_set (Lisp_Object, Lisp_Object); |
cd486875 KH |
60 | |
61 | static Lisp_Object | |
971de7fb | 62 | hash_get_category_set (Lisp_Object table, Lisp_Object category_set) |
cd486875 | 63 | { |
cd486875 KH |
64 | struct Lisp_Hash_Table *h; |
65 | int i; | |
66 | unsigned hash; | |
67 | ||
68 | if (NILP (XCHAR_TABLE (table)->extras[1])) | |
69 | XCHAR_TABLE (table)->extras[1] | |
70 | = make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
71 | make_float (DEFAULT_REHASH_SIZE), | |
72 | make_float (DEFAULT_REHASH_THRESHOLD), | |
73 | Qnil, Qnil, Qnil); | |
74 | h = XHASH_TABLE (XCHAR_TABLE (table)->extras[1]); | |
75 | i = hash_lookup (h, category_set, &hash); | |
76 | if (i >= 0) | |
77 | return HASH_KEY (h, i); | |
78 | hash_put (h, category_set, Qnil, hash); | |
79 | return category_set; | |
80 | } | |
81 | ||
82 | ||
4ed46869 | 83 | DEFUN ("make-category-set", Fmake_category_set, Smake_category_set, 1, 1, 0, |
fdb82f93 PJ |
84 | doc: /* Return a newly created category-set which contains CATEGORIES. |
85 | CATEGORIES is a string of category mnemonics. | |
86 | The value is a bool-vector which has t at the indices corresponding to | |
87 | those categories. */) | |
5842a27b | 88 | (Lisp_Object categories) |
4ed46869 KH |
89 | { |
90 | Lisp_Object val; | |
91 | int len; | |
92 | ||
b7826503 | 93 | CHECK_STRING (categories); |
4ed46869 KH |
94 | val = MAKE_CATEGORY_SET; |
95 | ||
115afec3 | 96 | if (STRING_MULTIBYTE (categories)) |
95030461 | 97 | error ("Multibyte string in `make-category-set'"); |
115afec3 | 98 | |
d5db4077 | 99 | len = SCHARS (categories); |
4ed46869 KH |
100 | while (--len >= 0) |
101 | { | |
15c60737 | 102 | Lisp_Object category; |
4ed46869 | 103 | |
d5db4077 | 104 | XSETFASTINT (category, SREF (categories, len)); |
b7826503 | 105 | CHECK_CATEGORY (category); |
4ed46869 KH |
106 | SET_CATEGORY_SET (val, category, Qt); |
107 | } | |
108 | return val; | |
109 | } | |
110 | ||
111 | \f | |
112 | /* Category staff. */ | |
113 | ||
971de7fb | 114 | Lisp_Object check_category_table (Lisp_Object table); |
4ed46869 KH |
115 | |
116 | DEFUN ("define-category", Fdefine_category, Sdefine_category, 2, 3, 0, | |
839966f3 KH |
117 | doc: /* Define CATEGORY as a category which is described by DOCSTRING. |
118 | CATEGORY should be an ASCII printing character in the range ` ' to `~'. | |
f6d2f045 KH |
119 | DOCSTRING is the documentation string of the category. The first line |
120 | should be a terse text (preferably less than 16 characters), | |
121 | and the rest lines should be the full description. | |
fdb82f93 | 122 | The category is defined only in category table TABLE, which defaults to |
839966f3 | 123 | the current buffer's category table. */) |
5842a27b | 124 | (Lisp_Object category, Lisp_Object docstring, Lisp_Object table) |
4ed46869 | 125 | { |
b7826503 PJ |
126 | CHECK_CATEGORY (category); |
127 | CHECK_STRING (docstring); | |
4ed46869 KH |
128 | table = check_category_table (table); |
129 | ||
130 | if (!NILP (CATEGORY_DOCSTRING (table, XFASTINT (category)))) | |
5fdb398c | 131 | error ("Category `%c' is already defined", (int) XFASTINT (category)); |
905a9ed3 DN |
132 | if (!NILP (Vpurify_flag)) |
133 | docstring = Fpurecopy (docstring); | |
4ed46869 KH |
134 | CATEGORY_DOCSTRING (table, XFASTINT (category)) = docstring; |
135 | ||
136 | return Qnil; | |
137 | } | |
138 | ||
139 | DEFUN ("category-docstring", Fcategory_docstring, Scategory_docstring, 1, 2, 0, | |
839966f3 KH |
140 | doc: /* Return the documentation string of CATEGORY, as defined in TABLE. |
141 | TABLE should be a category table and defaults to the current buffer's | |
142 | category table. */) | |
5842a27b | 143 | (Lisp_Object category, Lisp_Object table) |
4ed46869 | 144 | { |
b7826503 | 145 | CHECK_CATEGORY (category); |
4ed46869 KH |
146 | table = check_category_table (table); |
147 | ||
148 | return CATEGORY_DOCSTRING (table, XFASTINT (category)); | |
149 | } | |
150 | ||
151 | DEFUN ("get-unused-category", Fget_unused_category, Sget_unused_category, | |
152 | 0, 1, 0, | |
839966f3 | 153 | doc: /* Return a category which is not yet defined in TABLE. |
0b6694a5 | 154 | If no category remains available, return nil. |
839966f3 | 155 | The optional argument TABLE specifies which category table to modify; |
0b6694a5 | 156 | it defaults to the current buffer's category table. */) |
5842a27b | 157 | (Lisp_Object table) |
4ed46869 KH |
158 | { |
159 | int i; | |
4ed46869 KH |
160 | |
161 | table = check_category_table (table); | |
162 | ||
163 | for (i = ' '; i <= '~'; i++) | |
164 | if (NILP (CATEGORY_DOCSTRING (table, i))) | |
165 | return make_number (i); | |
166 | ||
167 | return Qnil; | |
168 | } | |
169 | ||
170 | \f | |
171 | /* Category-table staff. */ | |
172 | ||
173 | DEFUN ("category-table-p", Fcategory_table_p, Scategory_table_p, 1, 1, 0, | |
fdb82f93 | 174 | doc: /* Return t if ARG is a category table. */) |
5842a27b | 175 | (Lisp_Object arg) |
4ed46869 KH |
176 | { |
177 | if (CHAR_TABLE_P (arg) | |
ed8ec86d | 178 | && EQ (XCHAR_TABLE (arg)->purpose, Qcategory_table)) |
4ed46869 KH |
179 | return Qt; |
180 | return Qnil; | |
181 | } | |
182 | ||
183 | /* If TABLE is nil, return the current category table. If TABLE is | |
184 | not nil, check the validity of TABLE as a category table. If | |
185 | valid, return TABLE itself, but if not valid, signal an error of | |
186 | wrong-type-argument. */ | |
187 | ||
188 | Lisp_Object | |
971de7fb | 189 | check_category_table (Lisp_Object table) |
4ed46869 | 190 | { |
4ed46869 | 191 | if (NILP (table)) |
4b4deea2 | 192 | return BVAR (current_buffer, category_table); |
88674269 | 193 | CHECK_TYPE (!NILP (Fcategory_table_p (table)), Qcategory_table_p, table); |
4ed46869 | 194 | return table; |
177c0ea7 | 195 | } |
4ed46869 KH |
196 | |
197 | DEFUN ("category-table", Fcategory_table, Scategory_table, 0, 0, 0, | |
fdb82f93 PJ |
198 | doc: /* Return the current category table. |
199 | This is the one specified by the current buffer. */) | |
5842a27b | 200 | (void) |
4ed46869 | 201 | { |
4b4deea2 | 202 | return BVAR (current_buffer, category_table); |
4ed46869 KH |
203 | } |
204 | ||
205 | DEFUN ("standard-category-table", Fstandard_category_table, | |
206 | Sstandard_category_table, 0, 0, 0, | |
fdb82f93 PJ |
207 | doc: /* Return the standard category table. |
208 | This is the one used for new buffers. */) | |
5842a27b | 209 | (void) |
4ed46869 KH |
210 | { |
211 | return Vstandard_category_table; | |
212 | } | |
213 | ||
ea012abd KH |
214 | |
215 | static void | |
971de7fb | 216 | copy_category_entry (Lisp_Object table, Lisp_Object c, Lisp_Object val) |
ea012abd | 217 | { |
f4b670ef | 218 | val = Fcopy_sequence (val); |
8f924df7 KH |
219 | if (CONSP (c)) |
220 | char_table_set_range (table, XINT (XCAR (c)), XINT (XCDR (c)), val); | |
f4b670ef | 221 | else |
8f924df7 | 222 | char_table_set (table, XINT (c), val); |
ea012abd KH |
223 | } |
224 | ||
4ed46869 KH |
225 | /* Return a copy of category table TABLE. We can't simply use the |
226 | function copy-sequence because no contents should be shared between | |
ed8ec86d | 227 | the original and the copy. This function is called recursively by |
9da95d53 | 228 | binding TABLE to a sub char table. */ |
4ed46869 | 229 | |
9f3b5e69 | 230 | static Lisp_Object |
971de7fb | 231 | copy_category_table (Lisp_Object table) |
4ed46869 | 232 | { |
ea012abd | 233 | table = copy_char_table (table); |
4ed46869 | 234 | |
ea012abd KH |
235 | if (! NILP (XCHAR_TABLE (table)->defalt)) |
236 | XCHAR_TABLE (table)->defalt | |
237 | = Fcopy_sequence (XCHAR_TABLE (table)->defalt); | |
238 | XCHAR_TABLE (table)->extras[0] | |
239 | = Fcopy_sequence (XCHAR_TABLE (table)->extras[0]); | |
8f924df7 | 240 | map_char_table (copy_category_entry, Qnil, table, table); |
ed8ec86d | 241 | |
4ed46869 KH |
242 | return table; |
243 | } | |
244 | ||
245 | DEFUN ("copy-category-table", Fcopy_category_table, Scopy_category_table, | |
246 | 0, 1, 0, | |
fdb82f93 PJ |
247 | doc: /* Construct a new category table and return it. |
248 | It is a copy of the TABLE, which defaults to the standard category table. */) | |
5842a27b | 249 | (Lisp_Object table) |
4ed46869 KH |
250 | { |
251 | if (!NILP (table)) | |
252 | check_category_table (table); | |
253 | else | |
254 | table = Vstandard_category_table; | |
255 | ||
9da95d53 | 256 | return copy_category_table (table); |
4ed46869 KH |
257 | } |
258 | ||
70414a3d KH |
259 | DEFUN ("make-category-table", Fmake_category_table, Smake_category_table, |
260 | 0, 0, 0, | |
fdb82f93 | 261 | doc: /* Construct a new and empty category table and return it. */) |
5842a27b | 262 | (void) |
70414a3d KH |
263 | { |
264 | Lisp_Object val; | |
ea012abd | 265 | int i; |
70414a3d KH |
266 | |
267 | val = Fmake_char_table (Qcategory_table, Qnil); | |
268 | XCHAR_TABLE (val)->defalt = MAKE_CATEGORY_SET; | |
8f924df7 | 269 | for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++) |
ea012abd | 270 | XCHAR_TABLE (val)->contents[i] = MAKE_CATEGORY_SET; |
70414a3d KH |
271 | Fset_char_table_extra_slot (val, make_number (0), |
272 | Fmake_vector (make_number (95), Qnil)); | |
273 | return val; | |
274 | } | |
275 | ||
4ed46869 | 276 | DEFUN ("set-category-table", Fset_category_table, Sset_category_table, 1, 1, 0, |
839966f3 KH |
277 | doc: /* Specify TABLE as the category table for the current buffer. |
278 | Return TABLE. */) | |
5842a27b | 279 | (Lisp_Object table) |
4ed46869 | 280 | { |
6f598a6d | 281 | int idx; |
4ed46869 | 282 | table = check_category_table (table); |
4b4deea2 | 283 | BVAR (current_buffer, category_table) = table; |
4ed46869 | 284 | /* Indicate that this buffer now has a specified category table. */ |
f6cd0527 GM |
285 | idx = PER_BUFFER_VAR_IDX (category_table); |
286 | SET_PER_BUFFER_VALUE_P (current_buffer, idx, 1); | |
4ed46869 KH |
287 | return table; |
288 | } | |
289 | ||
290 | \f | |
ea012abd | 291 | Lisp_Object |
971de7fb | 292 | char_category_set (int c) |
ea012abd | 293 | { |
4b4deea2 | 294 | return CHAR_TABLE_REF (BVAR (current_buffer, category_table), c); |
ea012abd KH |
295 | } |
296 | ||
4ed46869 | 297 | DEFUN ("char-category-set", Fchar_category_set, Schar_category_set, 1, 1, 0, |
a2c2f196 JB |
298 | doc: /* Return the category set of CHAR. |
299 | usage: (char-category-set CHAR) */) | |
5842a27b | 300 | (Lisp_Object ch) |
4ed46869 | 301 | { |
b7826503 | 302 | CHECK_NUMBER (ch); |
4ed46869 KH |
303 | return CATEGORY_SET (XFASTINT (ch)); |
304 | } | |
305 | ||
306 | DEFUN ("category-set-mnemonics", Fcategory_set_mnemonics, | |
307 | Scategory_set_mnemonics, 1, 1, 0, | |
fdb82f93 PJ |
308 | doc: /* Return a string containing mnemonics of the categories in CATEGORY-SET. |
309 | CATEGORY-SET is a bool-vector, and the categories \"in\" it are those | |
839966f3 | 310 | that are indexes where t occurs in the bool-vector. |
fdb82f93 | 311 | The return value is a string containing those same categories. */) |
5842a27b | 312 | (Lisp_Object category_set) |
4ed46869 KH |
313 | { |
314 | int i, j; | |
315 | char str[96]; | |
316 | ||
b7826503 | 317 | CHECK_CATEGORY_SET (category_set); |
4ed46869 KH |
318 | |
319 | j = 0; | |
320 | for (i = 32; i < 127; i++) | |
321 | if (CATEGORY_MEMBER (i, category_set)) | |
322 | str[j++] = i; | |
323 | str[j] = '\0'; | |
324 | ||
325 | return build_string (str); | |
326 | } | |
327 | ||
4ed46869 | 328 | void |
971de7fb | 329 | set_category_set (Lisp_Object category_set, Lisp_Object category, Lisp_Object val) |
4ed46869 KH |
330 | { |
331 | do { | |
332 | int idx = XINT (category) / 8; | |
333 | unsigned char bits = 1 << (XINT (category) % 8); | |
334 | ||
335 | if (NILP (val)) | |
336 | XCATEGORY_SET (category_set)->data[idx] &= ~bits; | |
337 | else | |
338 | XCATEGORY_SET (category_set)->data[idx] |= bits; | |
339 | } while (0); | |
340 | } | |
341 | ||
342 | DEFUN ("modify-category-entry", Fmodify_category_entry, | |
343 | Smodify_category_entry, 2, 4, 0, | |
fdb82f93 PJ |
344 | doc: /* Modify the category set of CHARACTER by adding CATEGORY to it. |
345 | The category is changed only for table TABLE, which defaults to | |
8f7e5042 DL |
346 | the current buffer's category table. |
347 | CHARACTER can be either a single character or a cons representing the | |
348 | lower and upper ends of an inclusive character range to modify. | |
fdb82f93 PJ |
349 | If optional fourth argument RESET is non-nil, |
350 | then delete CATEGORY from the category set instead of adding it. */) | |
5842a27b | 351 | (Lisp_Object character, Lisp_Object category, Lisp_Object table, Lisp_Object reset) |
4ed46869 | 352 | { |
4ed46869 | 353 | Lisp_Object set_value; /* Actual value to be set in category sets. */ |
8f7e5042 | 354 | Lisp_Object category_set; |
ea012abd KH |
355 | int start, end; |
356 | int from, to; | |
4ed46869 | 357 | |
ea012abd | 358 | if (INTEGERP (character)) |
4ed46869 | 359 | { |
ea012abd KH |
360 | CHECK_CHARACTER (character); |
361 | start = end = XFASTINT (character); | |
4ed46869 | 362 | } |
ea012abd | 363 | else |
4ed46869 | 364 | { |
ea012abd | 365 | CHECK_CONS (character); |
8f924df7 KH |
366 | CHECK_CHARACTER_CAR (character); |
367 | CHECK_CHARACTER_CDR (character); | |
ea012abd KH |
368 | start = XFASTINT (XCAR (character)); |
369 | end = XFASTINT (XCDR (character)); | |
4ed46869 | 370 | } |
4ed46869 | 371 | |
b7826503 | 372 | CHECK_CATEGORY (category); |
4ed46869 | 373 | table = check_category_table (table); |
4ed46869 | 374 | |
4ed46869 | 375 | if (NILP (CATEGORY_DOCSTRING (table, XFASTINT (category)))) |
5fdb398c | 376 | error ("Undefined category: %c", (int) XFASTINT (category)); |
4ed46869 | 377 | |
4ed46869 | 378 | set_value = NILP (reset) ? Qt : Qnil; |
4ed46869 | 379 | |
ea012abd | 380 | while (start <= end) |
4ed46869 | 381 | { |
cd486875 | 382 | from = start, to = end; |
ea012abd | 383 | category_set = char_table_ref_and_range (table, start, &from, &to); |
0b261f59 | 384 | if (CATEGORY_MEMBER (XFASTINT (category), category_set) != NILP (reset)) |
ea012abd | 385 | { |
d8887a31 KH |
386 | category_set = Fcopy_sequence (category_set); |
387 | SET_CATEGORY_SET (category_set, category, set_value); | |
cd486875 KH |
388 | category_set = hash_get_category_set (table, category_set); |
389 | char_table_set_range (table, start, to, category_set); | |
ea012abd | 390 | } |
ea012abd | 391 | start = to + 1; |
4ed46869 | 392 | } |
4ed46869 KH |
393 | |
394 | return Qnil; | |
395 | } | |
396 | \f | |
4ed46869 KH |
397 | /* Return 1 if there is a word boundary between two word-constituent |
398 | characters C1 and C2 if they appear in this order, else return 0. | |
399 | Use the macro WORD_BOUNDARY_P instead of calling this function | |
400 | directly. */ | |
401 | ||
402 | int | |
971de7fb | 403 | word_boundary_p (int c1, int c2) |
4ed46869 KH |
404 | { |
405 | Lisp_Object category_set1, category_set2; | |
406 | Lisp_Object tail; | |
407 | int default_result; | |
408 | ||
714b2198 KH |
409 | if (EQ (CHAR_TABLE_REF (Vchar_script_table, c1), |
410 | CHAR_TABLE_REF (Vchar_script_table, c2))) | |
4ed46869 KH |
411 | { |
412 | tail = Vword_separating_categories; | |
413 | default_result = 0; | |
414 | } | |
415 | else | |
416 | { | |
417 | tail = Vword_combining_categories; | |
418 | default_result = 1; | |
419 | } | |
420 | ||
421 | category_set1 = CATEGORY_SET (c1); | |
422 | if (NILP (category_set1)) | |
423 | return default_result; | |
424 | category_set2 = CATEGORY_SET (c2); | |
425 | if (NILP (category_set2)) | |
426 | return default_result; | |
427 | ||
03699b14 | 428 | for (; CONSP (tail); tail = XCDR (tail)) |
4ed46869 | 429 | { |
03699b14 | 430 | Lisp_Object elt = XCAR (tail); |
4ed46869 KH |
431 | |
432 | if (CONSP (elt) | |
714b2198 KH |
433 | && (NILP (XCAR (elt)) |
434 | || (CATEGORYP (XCAR (elt)) | |
8a605fe8 KH |
435 | && CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set1) |
436 | && ! CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set2))) | |
714b2198 KH |
437 | && (NILP (XCDR (elt)) |
438 | || (CATEGORYP (XCDR (elt)) | |
8a605fe8 | 439 | && ! CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set1) |
714b2198 | 440 | && CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set2)))) |
4ed46869 KH |
441 | return !default_result; |
442 | } | |
443 | return default_result; | |
444 | } | |
445 | ||
446 | \f | |
dfcf069d | 447 | void |
971de7fb | 448 | init_category_once (void) |
4ed46869 KH |
449 | { |
450 | /* This has to be done here, before we call Fmake_char_table. */ | |
d67b4f80 | 451 | Qcategory_table = intern_c_string ("category-table"); |
4ed46869 KH |
452 | staticpro (&Qcategory_table); |
453 | ||
454 | /* Intern this now in case it isn't already done. | |
455 | Setting this variable twice is harmless. | |
456 | But don't staticpro it here--that is done in alloc.c. */ | |
d67b4f80 | 457 | Qchar_table_extra_slots = intern_c_string ("char-table-extra-slots"); |
4ed46869 KH |
458 | |
459 | /* Now we are ready to set up this property, so we can | |
460 | create category tables. */ | |
461 | Fput (Qcategory_table, Qchar_table_extra_slots, make_number (2)); | |
462 | ||
463 | Vstandard_category_table = Fmake_char_table (Qcategory_table, Qnil); | |
177c0ea7 | 464 | /* Set a category set which contains nothing to the default. */ |
4ed46869 | 465 | XCHAR_TABLE (Vstandard_category_table)->defalt = MAKE_CATEGORY_SET; |
9da95d53 | 466 | Fset_char_table_extra_slot (Vstandard_category_table, make_number (0), |
4ed46869 KH |
467 | Fmake_vector (make_number (95), Qnil)); |
468 | } | |
469 | ||
dfcf069d | 470 | void |
971de7fb | 471 | syms_of_category (void) |
4ed46869 | 472 | { |
d67b4f80 | 473 | Qcategoryp = intern_c_string ("categoryp"); |
4ed46869 | 474 | staticpro (&Qcategoryp); |
d67b4f80 | 475 | Qcategorysetp = intern_c_string ("categorysetp"); |
4ed46869 | 476 | staticpro (&Qcategorysetp); |
d67b4f80 | 477 | Qcategory_table_p = intern_c_string ("category-table-p"); |
4ed46869 KH |
478 | staticpro (&Qcategory_table_p); |
479 | ||
29208e82 | 480 | DEFVAR_LISP ("word-combining-categories", Vword_combining_categories, |
fdb82f93 PJ |
481 | doc: /* List of pair (cons) of categories to determine word boundary. |
482 | ||
483 | Emacs treats a sequence of word constituent characters as a single | |
e0f24100 | 484 | word (i.e. finds no word boundary between them) only if they belong to |
714b2198 | 485 | the same script. But, exceptions are allowed in the following cases. |
fdb82f93 | 486 | |
714b2198 | 487 | \(1) The case that characters are in different scripts is controlled |
fdb82f93 PJ |
488 | by the variable `word-combining-categories'. |
489 | ||
714b2198 | 490 | Emacs finds no word boundary between characters of different scripts |
fdb82f93 PJ |
491 | if they have categories matching some element of this list. |
492 | ||
493 | More precisely, if an element of this list is a cons of category CAT1 | |
494 | and CAT2, and a multibyte character C1 which has CAT1 is followed by | |
495 | C2 which has CAT2, there's no word boundary between C1 and C2. | |
496 | ||
714b2198 KH |
497 | For instance, to tell that Han characters followed by Hiragana |
498 | characters can form a single word, the element `(?C . ?H)' should be | |
499 | in this list. | |
fdb82f93 | 500 | |
714b2198 | 501 | \(2) The case that character are in the same script is controlled by |
fdb82f93 PJ |
502 | the variable `word-separating-categories'. |
503 | ||
ecdcaa09 | 504 | Emacs finds a word boundary between characters of the same script |
fdb82f93 PJ |
505 | if they have categories matching some element of this list. |
506 | ||
507 | More precisely, if an element of this list is a cons of category CAT1 | |
8a605fe8 KH |
508 | and CAT2, and a multibyte character C1 which has CAT1 but not CAT2 is |
509 | followed by C2 which has CAT2 but not CAT1, there's a word boundary | |
510 | between C1 and C2. | |
fdb82f93 | 511 | |
714b2198 KH |
512 | For instance, to tell that there's a word boundary between Hiragana |
513 | and Katakana (both are in the same script `kana'), | |
514 | the element `(?H . ?K) should be in this list. */); | |
4ed46869 KH |
515 | |
516 | Vword_combining_categories = Qnil; | |
517 | ||
29208e82 | 518 | DEFVAR_LISP ("word-separating-categories", Vword_separating_categories, |
fdb82f93 PJ |
519 | doc: /* List of pair (cons) of categories to determine word boundary. |
520 | See the documentation of the variable `word-combining-categories'. */); | |
4ed46869 KH |
521 | |
522 | Vword_separating_categories = Qnil; | |
523 | ||
524 | defsubr (&Smake_category_set); | |
525 | defsubr (&Sdefine_category); | |
526 | defsubr (&Scategory_docstring); | |
527 | defsubr (&Sget_unused_category); | |
528 | defsubr (&Scategory_table_p); | |
529 | defsubr (&Scategory_table); | |
530 | defsubr (&Sstandard_category_table); | |
531 | defsubr (&Scopy_category_table); | |
70414a3d | 532 | defsubr (&Smake_category_table); |
4ed46869 KH |
533 | defsubr (&Sset_category_table); |
534 | defsubr (&Schar_category_set); | |
535 | defsubr (&Scategory_set_mnemonics); | |
536 | defsubr (&Smodify_category_entry); | |
4ed46869 KH |
537 | |
538 | category_table_version = 0; | |
539 | } |