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1ee5d538 | 1 | /* chartab.c -- char-table support |
5df4f04c | 2 | Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
1ee5d538 KH |
3 | National Institute of Advanced Industrial Science and Technology (AIST) |
4 | Registration Number H13PRO009 | |
5 | ||
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
1ee5d538 | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
1ee5d538 KH |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
1ee5d538 KH |
20 | |
21 | #include <config.h> | |
d7306fe6 | 22 | #include <setjmp.h> |
b4a12c67 DL |
23 | #include "lisp.h" |
24 | #include "character.h" | |
25 | #include "charset.h" | |
26 | #include "ccl.h" | |
1ee5d538 KH |
27 | |
28 | /* 64/16/32/128 */ | |
29 | ||
30 | /* Number of elements in Nth level char-table. */ | |
31 | const int chartab_size[4] = | |
32 | { (1 << CHARTAB_SIZE_BITS_0), | |
33 | (1 << CHARTAB_SIZE_BITS_1), | |
34 | (1 << CHARTAB_SIZE_BITS_2), | |
35 | (1 << CHARTAB_SIZE_BITS_3) }; | |
36 | ||
37 | /* Number of characters each element of Nth level char-table | |
38 | covers. */ | |
38dfbee1 | 39 | static const int chartab_chars[4] = |
1ee5d538 KH |
40 | { (1 << (CHARTAB_SIZE_BITS_1 + CHARTAB_SIZE_BITS_2 + CHARTAB_SIZE_BITS_3)), |
41 | (1 << (CHARTAB_SIZE_BITS_2 + CHARTAB_SIZE_BITS_3)), | |
42 | (1 << CHARTAB_SIZE_BITS_3), | |
43 | 1 }; | |
44 | ||
45 | /* Number of characters (in bits) each element of Nth level char-table | |
46 | covers. */ | |
38dfbee1 | 47 | static const int chartab_bits[4] = |
1ee5d538 KH |
48 | { (CHARTAB_SIZE_BITS_1 + CHARTAB_SIZE_BITS_2 + CHARTAB_SIZE_BITS_3), |
49 | (CHARTAB_SIZE_BITS_2 + CHARTAB_SIZE_BITS_3), | |
50 | CHARTAB_SIZE_BITS_3, | |
51 | 0 }; | |
52 | ||
53 | #define CHARTAB_IDX(c, depth, min_char) \ | |
54 | (((c) - (min_char)) >> chartab_bits[(depth)]) | |
55 | ||
c805dec0 KH |
56 | \f |
57 | /* Preamble for uniprop (Unicode character property) tables. See the | |
58 | comment of "Unicode character property tables". */ | |
59 | ||
60 | /* Purpose of uniprop tables. */ | |
61 | static Lisp_Object Qchar_code_property_table; | |
62 | ||
63 | /* Types of decoder and encoder functions for uniprop values. */ | |
64 | typedef Lisp_Object (*uniprop_decoder_t) (Lisp_Object, Lisp_Object); | |
65 | typedef Lisp_Object (*uniprop_encoder_t) (Lisp_Object, Lisp_Object); | |
66 | ||
67 | static Lisp_Object uniprop_table_uncompress (Lisp_Object, int); | |
68 | static uniprop_decoder_t uniprop_get_decoder (Lisp_Object); | |
69 | ||
70 | /* 1 iff TABLE is a uniprop table. */ | |
71 | #define UNIPROP_TABLE_P(TABLE) \ | |
72 | (EQ (XCHAR_TABLE (TABLE)->purpose, Qchar_code_property_table) \ | |
73 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (TABLE)) == 5) | |
74 | ||
75 | /* Return a decoder for values in the uniprop table TABLE. */ | |
76 | #define UNIPROP_GET_DECODER(TABLE) \ | |
77 | (UNIPROP_TABLE_P (TABLE) ? uniprop_get_decoder (TABLE) : NULL) | |
1ee5d538 | 78 | |
c805dec0 KH |
79 | /* Nonzero iff OBJ is a string representing uniprop values of 128 |
80 | succeeding characters (the bottom level of a char-table) by a | |
81 | compressed format. We are sure that no property value has a string | |
82 | starting with '\001' nor '\002'. */ | |
83 | #define UNIPROP_COMPRESSED_FORM_P(OBJ) \ | |
84 | (STRINGP (OBJ) && SCHARS (OBJ) > 0 \ | |
85 | && ((SREF (OBJ, 0) == 1 || (SREF (OBJ, 0) == 2)))) | |
86 | ||
87 | \f | |
a7ca3326 | 88 | DEFUN ("make-char-table", Fmake_char_table, Smake_char_table, 1, 2, 0, |
eaa3b0e0 | 89 | doc: /* Return a newly created char-table, with purpose PURPOSE. |
1ee5d538 KH |
90 | Each element is initialized to INIT, which defaults to nil. |
91 | ||
eaa3b0e0 KH |
92 | PURPOSE should be a symbol. If it has a `char-table-extra-slots' |
93 | property, the property's value should be an integer between 0 and 10 | |
94 | that specifies how many extra slots the char-table has. Otherwise, | |
95 | the char-table has no extra slot. */) | |
5842a27b | 96 | (register Lisp_Object purpose, Lisp_Object init) |
1ee5d538 KH |
97 | { |
98 | Lisp_Object vector; | |
99 | Lisp_Object n; | |
eaa3b0e0 | 100 | int n_extras; |
1ee5d538 KH |
101 | int size; |
102 | ||
103 | CHECK_SYMBOL (purpose); | |
eaa3b0e0 KH |
104 | n = Fget (purpose, Qchar_table_extra_slots); |
105 | if (NILP (n)) | |
106 | n_extras = 0; | |
107 | else | |
1ee5d538 | 108 | { |
eaa3b0e0 | 109 | CHECK_NATNUM (n); |
d311d28c | 110 | if (XINT (n) > 10) |
eaa3b0e0 | 111 | args_out_of_range (n, Qnil); |
d311d28c | 112 | n_extras = XINT (n); |
1ee5d538 KH |
113 | } |
114 | ||
115 | size = VECSIZE (struct Lisp_Char_Table) - 1 + n_extras; | |
116 | vector = Fmake_vector (make_number (size), init); | |
985773c9 | 117 | XSETPVECTYPE (XVECTOR (vector), PVEC_CHAR_TABLE); |
742af32f PE |
118 | set_char_table_parent (vector, Qnil); |
119 | set_char_table_purpose (vector, purpose); | |
1ee5d538 KH |
120 | XSETCHAR_TABLE (vector, XCHAR_TABLE (vector)); |
121 | return vector; | |
122 | } | |
123 | ||
124 | static Lisp_Object | |
971de7fb | 125 | make_sub_char_table (int depth, int min_char, Lisp_Object defalt) |
1ee5d538 KH |
126 | { |
127 | Lisp_Object table; | |
128 | int size = VECSIZE (struct Lisp_Sub_Char_Table) - 1 + chartab_size[depth]; | |
1ee5d538 KH |
129 | |
130 | table = Fmake_vector (make_number (size), defalt); | |
985773c9 | 131 | XSETPVECTYPE (XVECTOR (table), PVEC_SUB_CHAR_TABLE); |
1ee5d538 KH |
132 | XSUB_CHAR_TABLE (table)->depth = make_number (depth); |
133 | XSUB_CHAR_TABLE (table)->min_char = make_number (min_char); | |
1ee5d538 KH |
134 | |
135 | return table; | |
136 | } | |
137 | ||
138 | static Lisp_Object | |
971de7fb | 139 | char_table_ascii (Lisp_Object table) |
1ee5d538 | 140 | { |
c805dec0 | 141 | Lisp_Object sub, val; |
1ee5d538 KH |
142 | |
143 | sub = XCHAR_TABLE (table)->contents[0]; | |
40033db7 KH |
144 | if (! SUB_CHAR_TABLE_P (sub)) |
145 | return sub; | |
1ee5d538 | 146 | sub = XSUB_CHAR_TABLE (sub)->contents[0]; |
40033db7 KH |
147 | if (! SUB_CHAR_TABLE_P (sub)) |
148 | return sub; | |
c805dec0 KH |
149 | val = XSUB_CHAR_TABLE (sub)->contents[0]; |
150 | if (UNIPROP_TABLE_P (table) && UNIPROP_COMPRESSED_FORM_P (val)) | |
151 | val = uniprop_table_uncompress (sub, 0); | |
152 | return val; | |
1ee5d538 KH |
153 | } |
154 | ||
fb93dbc2 | 155 | static Lisp_Object |
971de7fb | 156 | copy_sub_char_table (Lisp_Object table) |
1ee5d538 | 157 | { |
1ee5d538 KH |
158 | int depth = XINT (XSUB_CHAR_TABLE (table)->depth); |
159 | int min_char = XINT (XSUB_CHAR_TABLE (table)->min_char); | |
34dabdb7 | 160 | Lisp_Object copy = make_sub_char_table (depth, min_char, Qnil); |
1ee5d538 KH |
161 | int i; |
162 | ||
1ee5d538 KH |
163 | /* Recursively copy any sub char-tables. */ |
164 | for (i = 0; i < chartab_size[depth]; i++) | |
165 | { | |
34dabdb7 PE |
166 | Lisp_Object val = XSUB_CHAR_TABLE (table)->contents[i]; |
167 | set_sub_char_table_contents | |
168 | (copy, i, SUB_CHAR_TABLE_P (val) ? copy_sub_char_table (val) : val); | |
1ee5d538 KH |
169 | } |
170 | ||
171 | return copy; | |
172 | } | |
173 | ||
174 | ||
175 | Lisp_Object | |
971de7fb | 176 | copy_char_table (Lisp_Object table) |
1ee5d538 KH |
177 | { |
178 | Lisp_Object copy; | |
eab3844f | 179 | int size = XCHAR_TABLE (table)->header.size & PSEUDOVECTOR_SIZE_MASK; |
1ee5d538 KH |
180 | int i; |
181 | ||
182 | copy = Fmake_vector (make_number (size), Qnil); | |
985773c9 | 183 | XSETPVECTYPE (XVECTOR (copy), PVEC_CHAR_TABLE); |
742af32f PE |
184 | set_char_table_defalt (copy, XCHAR_TABLE (table)->defalt); |
185 | set_char_table_parent (copy, XCHAR_TABLE (table)->parent); | |
186 | set_char_table_purpose (copy, XCHAR_TABLE (table)->purpose); | |
1ee5d538 | 187 | for (i = 0; i < chartab_size[0]; i++) |
34dabdb7 | 188 | set_char_table_contents |
742af32f | 189 | (copy, i, |
a098c930 DA |
190 | (SUB_CHAR_TABLE_P (XCHAR_TABLE (table)->contents[i]) |
191 | ? copy_sub_char_table (XCHAR_TABLE (table)->contents[i]) | |
192 | : XCHAR_TABLE (table)->contents[i])); | |
742af32f | 193 | set_char_table_ascii (copy, char_table_ascii (copy)); |
1ee5d538 KH |
194 | size -= VECSIZE (struct Lisp_Char_Table) - 1; |
195 | for (i = 0; i < size; i++) | |
34dabdb7 | 196 | set_char_table_extras (copy, i, XCHAR_TABLE (table)->extras[i]); |
1ee5d538 KH |
197 | |
198 | XSETCHAR_TABLE (copy, XCHAR_TABLE (copy)); | |
199 | return copy; | |
200 | } | |
201 | ||
2f7c71a1 | 202 | static Lisp_Object |
c805dec0 | 203 | sub_char_table_ref (Lisp_Object table, int c, int is_uniprop) |
1ee5d538 KH |
204 | { |
205 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
206 | int depth = XINT (tbl->depth); | |
207 | int min_char = XINT (tbl->min_char); | |
208 | Lisp_Object val; | |
c805dec0 | 209 | int idx = CHARTAB_IDX (c, depth, min_char); |
1ee5d538 | 210 | |
c805dec0 KH |
211 | val = tbl->contents[idx]; |
212 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (val)) | |
213 | val = uniprop_table_uncompress (table, idx); | |
1ee5d538 | 214 | if (SUB_CHAR_TABLE_P (val)) |
c805dec0 | 215 | val = sub_char_table_ref (val, c, is_uniprop); |
1ee5d538 KH |
216 | return val; |
217 | } | |
218 | ||
219 | Lisp_Object | |
971de7fb | 220 | char_table_ref (Lisp_Object table, int c) |
1ee5d538 KH |
221 | { |
222 | struct Lisp_Char_Table *tbl = XCHAR_TABLE (table); | |
223 | Lisp_Object val; | |
224 | ||
225 | if (ASCII_CHAR_P (c)) | |
226 | { | |
227 | val = tbl->ascii; | |
228 | if (SUB_CHAR_TABLE_P (val)) | |
229 | val = XSUB_CHAR_TABLE (val)->contents[c]; | |
230 | } | |
231 | else | |
232 | { | |
233 | val = tbl->contents[CHARTAB_IDX (c, 0, 0)]; | |
234 | if (SUB_CHAR_TABLE_P (val)) | |
c805dec0 | 235 | val = sub_char_table_ref (val, c, UNIPROP_TABLE_P (table)); |
1ee5d538 KH |
236 | } |
237 | if (NILP (val)) | |
238 | { | |
239 | val = tbl->defalt; | |
240 | if (NILP (val) && CHAR_TABLE_P (tbl->parent)) | |
241 | val = char_table_ref (tbl->parent, c); | |
242 | } | |
243 | return val; | |
8f924df7 | 244 | } |
1ee5d538 KH |
245 | |
246 | static Lisp_Object | |
c805dec0 KH |
247 | sub_char_table_ref_and_range (Lisp_Object table, int c, int *from, int *to, |
248 | Lisp_Object defalt, int is_uniprop) | |
1ee5d538 KH |
249 | { |
250 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
251 | int depth = XINT (tbl->depth); | |
252 | int min_char = XINT (tbl->min_char); | |
5c156ace | 253 | int chartab_idx = CHARTAB_IDX (c, depth, min_char), idx; |
1ee5d538 | 254 | Lisp_Object val; |
8f924df7 | 255 | |
5c156ace | 256 | val = tbl->contents[chartab_idx]; |
c805dec0 KH |
257 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (val)) |
258 | val = uniprop_table_uncompress (table, chartab_idx); | |
e15009d9 | 259 | if (SUB_CHAR_TABLE_P (val)) |
c805dec0 | 260 | val = sub_char_table_ref_and_range (val, c, from, to, defalt, is_uniprop); |
e15009d9 KH |
261 | else if (NILP (val)) |
262 | val = defalt; | |
263 | ||
5c156ace | 264 | idx = chartab_idx; |
7ef1f5d1 | 265 | while (idx > 0 && *from < min_char + idx * chartab_chars[depth]) |
1ee5d538 | 266 | { |
e15009d9 | 267 | Lisp_Object this_val; |
e15009d9 | 268 | |
7ef1f5d1 KH |
269 | c = min_char + idx * chartab_chars[depth] - 1; |
270 | idx--; | |
271 | this_val = tbl->contents[idx]; | |
c805dec0 KH |
272 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (this_val)) |
273 | this_val = uniprop_table_uncompress (table, idx); | |
e15009d9 | 274 | if (SUB_CHAR_TABLE_P (this_val)) |
c805dec0 KH |
275 | this_val = sub_char_table_ref_and_range (this_val, c, from, to, defalt, |
276 | is_uniprop); | |
e15009d9 KH |
277 | else if (NILP (this_val)) |
278 | this_val = defalt; | |
279 | ||
280 | if (! EQ (this_val, val)) | |
7ef1f5d1 KH |
281 | { |
282 | *from = c + 1; | |
283 | break; | |
284 | } | |
1ee5d538 | 285 | } |
fe75f926 PE |
286 | while (((c = (chartab_idx + 1) * chartab_chars[depth]) |
287 | < chartab_chars[depth - 1]) | |
288 | && (c += min_char) <= *to) | |
1ee5d538 | 289 | { |
e15009d9 | 290 | Lisp_Object this_val; |
e15009d9 | 291 | |
5c156ace PE |
292 | chartab_idx++; |
293 | this_val = tbl->contents[chartab_idx]; | |
c805dec0 KH |
294 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (this_val)) |
295 | this_val = uniprop_table_uncompress (table, chartab_idx); | |
e15009d9 | 296 | if (SUB_CHAR_TABLE_P (this_val)) |
c805dec0 KH |
297 | this_val = sub_char_table_ref_and_range (this_val, c, from, to, defalt, |
298 | is_uniprop); | |
e15009d9 KH |
299 | else if (NILP (this_val)) |
300 | this_val = defalt; | |
301 | if (! EQ (this_val, val)) | |
7ef1f5d1 KH |
302 | { |
303 | *to = c - 1; | |
304 | break; | |
305 | } | |
1ee5d538 | 306 | } |
e15009d9 | 307 | |
1ee5d538 KH |
308 | return val; |
309 | } | |
310 | ||
311 | ||
7ef1f5d1 KH |
312 | /* Return the value for C in char-table TABLE. Shrink the range *FROM |
313 | and *TO to cover characters (containing C) that have the same value | |
314 | as C. It is not assured that the values of (*FROM - 1) and (*TO + | |
315 | 1) are different from that of C. */ | |
e15009d9 | 316 | |
1ee5d538 | 317 | Lisp_Object |
971de7fb | 318 | char_table_ref_and_range (Lisp_Object table, int c, int *from, int *to) |
1ee5d538 KH |
319 | { |
320 | struct Lisp_Char_Table *tbl = XCHAR_TABLE (table); | |
5c156ace | 321 | int chartab_idx = CHARTAB_IDX (c, 0, 0), idx; |
1ee5d538 | 322 | Lisp_Object val; |
c805dec0 | 323 | int is_uniprop = UNIPROP_TABLE_P (table); |
1ee5d538 | 324 | |
5c156ace | 325 | val = tbl->contents[chartab_idx]; |
7ef1f5d1 KH |
326 | if (*from < 0) |
327 | *from = 0; | |
328 | if (*to < 0) | |
329 | *to = MAX_CHAR; | |
c805dec0 KH |
330 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (val)) |
331 | val = uniprop_table_uncompress (table, chartab_idx); | |
e15009d9 | 332 | if (SUB_CHAR_TABLE_P (val)) |
c805dec0 KH |
333 | val = sub_char_table_ref_and_range (val, c, from, to, tbl->defalt, |
334 | is_uniprop); | |
e15009d9 KH |
335 | else if (NILP (val)) |
336 | val = tbl->defalt; | |
5c156ace | 337 | idx = chartab_idx; |
7ef1f5d1 | 338 | while (*from < idx * chartab_chars[0]) |
1ee5d538 | 339 | { |
e15009d9 | 340 | Lisp_Object this_val; |
e15009d9 | 341 | |
7ef1f5d1 KH |
342 | c = idx * chartab_chars[0] - 1; |
343 | idx--; | |
344 | this_val = tbl->contents[idx]; | |
c805dec0 KH |
345 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (this_val)) |
346 | this_val = uniprop_table_uncompress (table, idx); | |
e15009d9 | 347 | if (SUB_CHAR_TABLE_P (this_val)) |
7ef1f5d1 | 348 | this_val = sub_char_table_ref_and_range (this_val, c, from, to, |
c805dec0 | 349 | tbl->defalt, is_uniprop); |
e15009d9 KH |
350 | else if (NILP (this_val)) |
351 | this_val = tbl->defalt; | |
352 | ||
353 | if (! EQ (this_val, val)) | |
7ef1f5d1 KH |
354 | { |
355 | *from = c + 1; | |
356 | break; | |
357 | } | |
1ee5d538 | 358 | } |
5c156ace | 359 | while (*to >= (chartab_idx + 1) * chartab_chars[0]) |
1ee5d538 | 360 | { |
e15009d9 | 361 | Lisp_Object this_val; |
e15009d9 | 362 | |
5c156ace PE |
363 | chartab_idx++; |
364 | c = chartab_idx * chartab_chars[0]; | |
365 | this_val = tbl->contents[chartab_idx]; | |
c805dec0 KH |
366 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (this_val)) |
367 | this_val = uniprop_table_uncompress (table, chartab_idx); | |
e15009d9 | 368 | if (SUB_CHAR_TABLE_P (this_val)) |
7ef1f5d1 | 369 | this_val = sub_char_table_ref_and_range (this_val, c, from, to, |
c805dec0 | 370 | tbl->defalt, is_uniprop); |
e15009d9 KH |
371 | else if (NILP (this_val)) |
372 | this_val = tbl->defalt; | |
373 | if (! EQ (this_val, val)) | |
7ef1f5d1 KH |
374 | { |
375 | *to = c - 1; | |
376 | break; | |
377 | } | |
1ee5d538 KH |
378 | } |
379 | ||
1ee5d538 | 380 | return val; |
e15009d9 | 381 | } |
1ee5d538 KH |
382 | |
383 | ||
1ee5d538 | 384 | static void |
c805dec0 | 385 | sub_char_table_set (Lisp_Object table, int c, Lisp_Object val, int is_uniprop) |
1ee5d538 KH |
386 | { |
387 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
388 | int depth = XINT ((tbl)->depth); | |
389 | int min_char = XINT ((tbl)->min_char); | |
390 | int i = CHARTAB_IDX (c, depth, min_char); | |
391 | Lisp_Object sub; | |
8f924df7 | 392 | |
1ee5d538 | 393 | if (depth == 3) |
34dabdb7 | 394 | set_sub_char_table_contents (table, i, val); |
1ee5d538 KH |
395 | else |
396 | { | |
397 | sub = tbl->contents[i]; | |
398 | if (! SUB_CHAR_TABLE_P (sub)) | |
399 | { | |
c805dec0 KH |
400 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (sub)) |
401 | sub = uniprop_table_uncompress (table, i); | |
402 | else | |
403 | { | |
404 | sub = make_sub_char_table (depth + 1, | |
405 | min_char + i * chartab_chars[depth], | |
406 | sub); | |
34dabdb7 | 407 | set_sub_char_table_contents (table, i, sub); |
c805dec0 | 408 | } |
1ee5d538 | 409 | } |
c805dec0 | 410 | sub_char_table_set (sub, c, val, is_uniprop); |
1ee5d538 KH |
411 | } |
412 | } | |
413 | ||
414 | Lisp_Object | |
971de7fb | 415 | char_table_set (Lisp_Object table, int c, Lisp_Object val) |
1ee5d538 KH |
416 | { |
417 | struct Lisp_Char_Table *tbl = XCHAR_TABLE (table); | |
418 | ||
419 | if (ASCII_CHAR_P (c) | |
420 | && SUB_CHAR_TABLE_P (tbl->ascii)) | |
34dabdb7 | 421 | set_sub_char_table_contents (tbl->ascii, c, val); |
1ee5d538 KH |
422 | else |
423 | { | |
424 | int i = CHARTAB_IDX (c, 0, 0); | |
425 | Lisp_Object sub; | |
426 | ||
427 | sub = tbl->contents[i]; | |
428 | if (! SUB_CHAR_TABLE_P (sub)) | |
429 | { | |
430 | sub = make_sub_char_table (1, i * chartab_chars[0], sub); | |
34dabdb7 | 431 | set_char_table_contents (table, i, sub); |
1ee5d538 | 432 | } |
c805dec0 | 433 | sub_char_table_set (sub, c, val, UNIPROP_TABLE_P (table)); |
1ee5d538 | 434 | if (ASCII_CHAR_P (c)) |
742af32f | 435 | set_char_table_ascii (table, char_table_ascii (table)); |
1ee5d538 KH |
436 | } |
437 | return val; | |
438 | } | |
439 | ||
440 | static void | |
c805dec0 KH |
441 | sub_char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val, |
442 | int is_uniprop) | |
1ee5d538 | 443 | { |
c805dec0 KH |
444 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); |
445 | int depth = XINT ((tbl)->depth); | |
446 | int min_char = XINT ((tbl)->min_char); | |
447 | int chars_in_block = chartab_chars[depth]; | |
448 | int i, c, lim = chartab_size[depth]; | |
449 | ||
450 | if (from < min_char) | |
451 | from = min_char; | |
452 | i = CHARTAB_IDX (from, depth, min_char); | |
453 | c = min_char + chars_in_block * i; | |
023e7b41 | 454 | for (; i < lim; i++, c += chars_in_block) |
1ee5d538 | 455 | { |
c805dec0 KH |
456 | if (c > to) |
457 | break; | |
458 | if (from <= c && c + chars_in_block - 1 <= to) | |
34dabdb7 | 459 | set_sub_char_table_contents (table, i, val); |
c805dec0 KH |
460 | else |
461 | { | |
462 | Lisp_Object sub = tbl->contents[i]; | |
463 | if (! SUB_CHAR_TABLE_P (sub)) | |
464 | { | |
465 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (sub)) | |
466 | sub = uniprop_table_uncompress (table, i); | |
467 | else | |
468 | { | |
469 | sub = make_sub_char_table (depth + 1, c, sub); | |
34dabdb7 | 470 | set_sub_char_table_contents (table, i, sub); |
c805dec0 KH |
471 | } |
472 | } | |
473 | sub_char_table_set_range (sub, from, to, val, is_uniprop); | |
474 | } | |
1ee5d538 KH |
475 | } |
476 | } | |
477 | ||
478 | ||
479 | Lisp_Object | |
971de7fb | 480 | char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val) |
1ee5d538 KH |
481 | { |
482 | struct Lisp_Char_Table *tbl = XCHAR_TABLE (table); | |
1ee5d538 KH |
483 | |
484 | if (from == to) | |
485 | char_table_set (table, from, val); | |
486 | else | |
487 | { | |
c805dec0 KH |
488 | int is_uniprop = UNIPROP_TABLE_P (table); |
489 | int lim = CHARTAB_IDX (to, 0, 0); | |
490 | int i, c; | |
491 | ||
492 | for (i = CHARTAB_IDX (from, 0, 0), c = 0; i <= lim; | |
493 | i++, c += chartab_chars[0]) | |
494 | { | |
495 | if (c > to) | |
496 | break; | |
497 | if (from <= c && c + chartab_chars[0] - 1 <= to) | |
34dabdb7 | 498 | set_char_table_contents (table, i, val); |
c805dec0 KH |
499 | else |
500 | { | |
501 | Lisp_Object sub = tbl->contents[i]; | |
502 | if (! SUB_CHAR_TABLE_P (sub)) | |
503 | { | |
504 | sub = make_sub_char_table (1, i * chartab_chars[0], sub); | |
34dabdb7 | 505 | set_char_table_contents (table, i, sub); |
c805dec0 KH |
506 | } |
507 | sub_char_table_set_range (sub, from, to, val, is_uniprop); | |
508 | } | |
509 | } | |
1ee5d538 | 510 | if (ASCII_CHAR_P (from)) |
742af32f | 511 | set_char_table_ascii (table, char_table_ascii (table)); |
1ee5d538 KH |
512 | } |
513 | return val; | |
514 | } | |
515 | ||
516 | \f | |
517 | DEFUN ("char-table-subtype", Fchar_table_subtype, Schar_table_subtype, | |
518 | 1, 1, 0, | |
519 | doc: /* | |
520 | Return the subtype of char-table CHAR-TABLE. The value is a symbol. */) | |
5842a27b | 521 | (Lisp_Object char_table) |
1ee5d538 KH |
522 | { |
523 | CHECK_CHAR_TABLE (char_table); | |
524 | ||
525 | return XCHAR_TABLE (char_table)->purpose; | |
526 | } | |
527 | ||
528 | DEFUN ("char-table-parent", Fchar_table_parent, Schar_table_parent, | |
529 | 1, 1, 0, | |
530 | doc: /* Return the parent char-table of CHAR-TABLE. | |
531 | The value is either nil or another char-table. | |
532 | If CHAR-TABLE holds nil for a given character, | |
533 | then the actual applicable value is inherited from the parent char-table | |
534 | \(or from its parents, if necessary). */) | |
5842a27b | 535 | (Lisp_Object char_table) |
1ee5d538 KH |
536 | { |
537 | CHECK_CHAR_TABLE (char_table); | |
538 | ||
539 | return XCHAR_TABLE (char_table)->parent; | |
540 | } | |
541 | ||
a7ca3326 | 542 | DEFUN ("set-char-table-parent", Fset_char_table_parent, Sset_char_table_parent, |
1ee5d538 KH |
543 | 2, 2, 0, |
544 | doc: /* Set the parent char-table of CHAR-TABLE to PARENT. | |
6b61353c | 545 | Return PARENT. PARENT must be either nil or another char-table. */) |
5842a27b | 546 | (Lisp_Object char_table, Lisp_Object parent) |
1ee5d538 KH |
547 | { |
548 | Lisp_Object temp; | |
549 | ||
550 | CHECK_CHAR_TABLE (char_table); | |
551 | ||
552 | if (!NILP (parent)) | |
553 | { | |
554 | CHECK_CHAR_TABLE (parent); | |
555 | ||
556 | for (temp = parent; !NILP (temp); temp = XCHAR_TABLE (temp)->parent) | |
557 | if (EQ (temp, char_table)) | |
558 | error ("Attempt to make a chartable be its own parent"); | |
559 | } | |
560 | ||
742af32f | 561 | set_char_table_parent (char_table, parent); |
1ee5d538 KH |
562 | |
563 | return parent; | |
564 | } | |
565 | ||
a7ca3326 | 566 | DEFUN ("char-table-extra-slot", Fchar_table_extra_slot, Schar_table_extra_slot, |
1ee5d538 KH |
567 | 2, 2, 0, |
568 | doc: /* Return the value of CHAR-TABLE's extra-slot number N. */) | |
5842a27b | 569 | (Lisp_Object char_table, Lisp_Object n) |
1ee5d538 KH |
570 | { |
571 | CHECK_CHAR_TABLE (char_table); | |
572 | CHECK_NUMBER (n); | |
573 | if (XINT (n) < 0 | |
574 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) | |
575 | args_out_of_range (char_table, n); | |
576 | ||
577 | return XCHAR_TABLE (char_table)->extras[XINT (n)]; | |
578 | } | |
579 | ||
a7ca3326 | 580 | DEFUN ("set-char-table-extra-slot", Fset_char_table_extra_slot, |
1ee5d538 KH |
581 | Sset_char_table_extra_slot, |
582 | 3, 3, 0, | |
583 | doc: /* Set CHAR-TABLE's extra-slot number N to VALUE. */) | |
5842a27b | 584 | (Lisp_Object char_table, Lisp_Object n, Lisp_Object value) |
1ee5d538 KH |
585 | { |
586 | CHECK_CHAR_TABLE (char_table); | |
587 | CHECK_NUMBER (n); | |
588 | if (XINT (n) < 0 | |
589 | || XINT (n) >= CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (char_table))) | |
590 | args_out_of_range (char_table, n); | |
591 | ||
34dabdb7 | 592 | set_char_table_extras (char_table, XINT (n), value); |
a098c930 | 593 | return value; |
1ee5d538 KH |
594 | } |
595 | \f | |
596 | DEFUN ("char-table-range", Fchar_table_range, Schar_table_range, | |
597 | 2, 2, 0, | |
598 | doc: /* Return the value in CHAR-TABLE for a range of characters RANGE. | |
599 | RANGE should be nil (for the default value), | |
600 | a cons of character codes (for characters in the range), or a character code. */) | |
5842a27b | 601 | (Lisp_Object char_table, Lisp_Object range) |
1ee5d538 KH |
602 | { |
603 | Lisp_Object val; | |
604 | CHECK_CHAR_TABLE (char_table); | |
605 | ||
606 | if (EQ (range, Qnil)) | |
607 | val = XCHAR_TABLE (char_table)->defalt; | |
8fd02eb7 PE |
608 | else if (CHARACTERP (range)) |
609 | val = CHAR_TABLE_REF (char_table, XFASTINT (range)); | |
1ee5d538 KH |
610 | else if (CONSP (range)) |
611 | { | |
612 | int from, to; | |
613 | ||
8f924df7 KH |
614 | CHECK_CHARACTER_CAR (range); |
615 | CHECK_CHARACTER_CDR (range); | |
c805dec0 KH |
616 | from = XFASTINT (XCAR (range)); |
617 | to = XFASTINT (XCDR (range)); | |
618 | val = char_table_ref_and_range (char_table, from, &from, &to); | |
1ee5d538 KH |
619 | /* Not yet implemented. */ |
620 | } | |
621 | else | |
622 | error ("Invalid RANGE argument to `char-table-range'"); | |
623 | return val; | |
624 | } | |
625 | ||
a7ca3326 | 626 | DEFUN ("set-char-table-range", Fset_char_table_range, Sset_char_table_range, |
1ee5d538 | 627 | 3, 3, 0, |
6b61353c | 628 | doc: /* Set the value in CHAR-TABLE for a range of characters RANGE to VALUE. |
1ee5d538 | 629 | RANGE should be t (for all characters), nil (for the default value), |
6b61353c KH |
630 | a cons of character codes (for characters in the range), |
631 | or a character code. Return VALUE. */) | |
5842a27b | 632 | (Lisp_Object char_table, Lisp_Object range, Lisp_Object value) |
1ee5d538 KH |
633 | { |
634 | CHECK_CHAR_TABLE (char_table); | |
635 | if (EQ (range, Qt)) | |
636 | { | |
637 | int i; | |
638 | ||
742af32f | 639 | set_char_table_ascii (char_table, value); |
1ee5d538 | 640 | for (i = 0; i < chartab_size[0]; i++) |
34dabdb7 | 641 | set_char_table_contents (char_table, i, value); |
1ee5d538 KH |
642 | } |
643 | else if (EQ (range, Qnil)) | |
742af32f | 644 | set_char_table_defalt (char_table, value); |
d311d28c | 645 | else if (CHARACTERP (range)) |
1ee5d538 KH |
646 | char_table_set (char_table, XINT (range), value); |
647 | else if (CONSP (range)) | |
648 | { | |
8f924df7 KH |
649 | CHECK_CHARACTER_CAR (range); |
650 | CHECK_CHARACTER_CDR (range); | |
1ee5d538 KH |
651 | char_table_set_range (char_table, |
652 | XINT (XCAR (range)), XINT (XCDR (range)), value); | |
653 | } | |
654 | else | |
655 | error ("Invalid RANGE argument to `set-char-table-range'"); | |
656 | ||
657 | return value; | |
658 | } | |
659 | ||
660 | DEFUN ("set-char-table-default", Fset_char_table_default, | |
661 | Sset_char_table_default, 3, 3, 0, | |
662 | doc: /* | |
f6e5cae0 | 663 | This function is obsolete and has no effect. */) |
5842a27b | 664 | (Lisp_Object char_table, Lisp_Object ch, Lisp_Object value) |
1ee5d538 KH |
665 | { |
666 | return Qnil; | |
667 | } | |
668 | ||
669 | /* Look up the element in TABLE at index CH, and return it as an | |
05d6275c | 670 | integer. If the element is not a character, return CH itself. */ |
1ee5d538 KH |
671 | |
672 | int | |
971de7fb | 673 | char_table_translate (Lisp_Object table, int ch) |
1ee5d538 KH |
674 | { |
675 | Lisp_Object value; | |
676 | value = Faref (table, make_number (ch)); | |
05d6275c | 677 | if (! CHARACTERP (value)) |
1ee5d538 KH |
678 | return ch; |
679 | return XINT (value); | |
680 | } | |
681 | ||
682 | static Lisp_Object | |
971de7fb | 683 | optimize_sub_char_table (Lisp_Object table, Lisp_Object test) |
1ee5d538 KH |
684 | { |
685 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
686 | int depth = XINT (tbl->depth); | |
687 | Lisp_Object elt, this; | |
c3b57f23 | 688 | int i, optimizable; |
1ee5d538 KH |
689 | |
690 | elt = XSUB_CHAR_TABLE (table)->contents[0]; | |
691 | if (SUB_CHAR_TABLE_P (elt)) | |
2751c80f DA |
692 | { |
693 | elt = optimize_sub_char_table (elt, test); | |
34dabdb7 | 694 | set_sub_char_table_contents (table, 0, elt); |
2751c80f | 695 | } |
c3b57f23 | 696 | optimizable = SUB_CHAR_TABLE_P (elt) ? 0 : 1; |
1ee5d538 KH |
697 | for (i = 1; i < chartab_size[depth]; i++) |
698 | { | |
699 | this = XSUB_CHAR_TABLE (table)->contents[i]; | |
700 | if (SUB_CHAR_TABLE_P (this)) | |
2751c80f DA |
701 | { |
702 | this = optimize_sub_char_table (this, test); | |
34dabdb7 | 703 | set_sub_char_table_contents (table, i, this); |
2751c80f | 704 | } |
c3b57f23 KH |
705 | if (optimizable |
706 | && (NILP (test) ? NILP (Fequal (this, elt)) /* defaults to `equal'. */ | |
d0827857 SM |
707 | : EQ (test, Qeq) ? !EQ (this, elt) /* Optimize `eq' case. */ |
708 | : NILP (call2 (test, this, elt)))) | |
c3b57f23 | 709 | optimizable = 0; |
1ee5d538 KH |
710 | } |
711 | ||
c3b57f23 | 712 | return (optimizable ? elt : table); |
1ee5d538 KH |
713 | } |
714 | ||
a7ca3326 | 715 | DEFUN ("optimize-char-table", Foptimize_char_table, Soptimize_char_table, |
d0827857 SM |
716 | 1, 2, 0, |
717 | doc: /* Optimize CHAR-TABLE. | |
718 | TEST is the comparison function used to decide whether two entries are | |
719 | equivalent and can be merged. It defaults to `equal'. */) | |
5842a27b | 720 | (Lisp_Object char_table, Lisp_Object test) |
1ee5d538 KH |
721 | { |
722 | Lisp_Object elt; | |
723 | int i; | |
724 | ||
725 | CHECK_CHAR_TABLE (char_table); | |
726 | ||
727 | for (i = 0; i < chartab_size[0]; i++) | |
728 | { | |
729 | elt = XCHAR_TABLE (char_table)->contents[i]; | |
730 | if (SUB_CHAR_TABLE_P (elt)) | |
34dabdb7 | 731 | set_char_table_contents |
a098c930 | 732 | (char_table, i, optimize_sub_char_table (elt, test)); |
1ee5d538 | 733 | } |
4d632321 | 734 | /* Reset the `ascii' cache, in case it got optimized away. */ |
742af32f | 735 | set_char_table_ascii (char_table, char_table_ascii (char_table)); |
4d632321 | 736 | |
1ee5d538 KH |
737 | return Qnil; |
738 | } | |
739 | ||
740 | \f | |
57d53d1b KH |
741 | /* Map C_FUNCTION or FUNCTION over TABLE (top or sub char-table), |
742 | calling it for each character or group of characters that share a | |
743 | value. RANGE is a cons (FROM . TO) specifying the range of target | |
c805dec0 | 744 | characters, VAL is a value of FROM in TABLE, TOP is the top |
57d53d1b KH |
745 | char-table. |
746 | ||
747 | ARG is passed to C_FUNCTION when that is called. | |
748 | ||
749 | It returns the value of last character covered by TABLE (not the | |
53964682 | 750 | value inherited from the parent), and by side-effect, the car part |
57d53d1b KH |
751 | of RANGE is updated to the minimum character C where C and all the |
752 | following characters in TABLE have the same value. */ | |
753 | ||
1ee5d538 | 754 | static Lisp_Object |
dd4c5104 DN |
755 | map_sub_char_table (void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object), |
756 | Lisp_Object function, Lisp_Object table, Lisp_Object arg, Lisp_Object val, | |
c805dec0 | 757 | Lisp_Object range, Lisp_Object top) |
1ee5d538 | 758 | { |
57d53d1b KH |
759 | /* Depth of TABLE. */ |
760 | int depth; | |
0b381c7e | 761 | /* Minimum and maximum characters covered by TABLE. */ |
57d53d1b KH |
762 | int min_char, max_char; |
763 | /* Number of characters covered by one element of TABLE. */ | |
764 | int chars_in_block; | |
765 | int from = XINT (XCAR (range)), to = XINT (XCDR (range)); | |
1ee5d538 | 766 | int i, c; |
c805dec0 KH |
767 | int is_uniprop = UNIPROP_TABLE_P (top); |
768 | uniprop_decoder_t decoder = UNIPROP_GET_DECODER (top); | |
1ee5d538 | 769 | |
57d53d1b KH |
770 | if (SUB_CHAR_TABLE_P (table)) |
771 | { | |
772 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
773 | ||
774 | depth = XINT (tbl->depth); | |
57d53d1b KH |
775 | min_char = XINT (tbl->min_char); |
776 | max_char = min_char + chartab_chars[depth - 1] - 1; | |
777 | } | |
778 | else | |
779 | { | |
780 | depth = 0; | |
57d53d1b KH |
781 | min_char = 0; |
782 | max_char = MAX_CHAR; | |
783 | } | |
784 | chars_in_block = chartab_chars[depth]; | |
785 | ||
786 | if (to < max_char) | |
787 | max_char = to; | |
788 | /* Set I to the index of the first element to check. */ | |
789 | if (from <= min_char) | |
790 | i = 0; | |
791 | else | |
792 | i = (from - min_char) / chars_in_block; | |
793 | for (c = min_char + chars_in_block * i; c <= max_char; | |
794 | i++, c += chars_in_block) | |
1ee5d538 | 795 | { |
c805dec0 KH |
796 | Lisp_Object this = (SUB_CHAR_TABLE_P (table) |
797 | ? XSUB_CHAR_TABLE (table)->contents[i] | |
798 | : XCHAR_TABLE (table)->contents[i]); | |
57d53d1b | 799 | int nextc = c + chars_in_block; |
1ee5d538 | 800 | |
c805dec0 KH |
801 | if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (this)) |
802 | this = uniprop_table_uncompress (table, i); | |
1ee5d538 | 803 | if (SUB_CHAR_TABLE_P (this)) |
57d53d1b KH |
804 | { |
805 | if (to >= nextc) | |
806 | XSETCDR (range, make_number (nextc - 1)); | |
807 | val = map_sub_char_table (c_function, function, this, arg, | |
c805dec0 | 808 | val, range, top); |
57d53d1b | 809 | } |
2f76e15e | 810 | else |
1ee5d538 | 811 | { |
2f76e15e | 812 | if (NILP (this)) |
c805dec0 | 813 | this = XCHAR_TABLE (top)->defalt; |
d0827857 | 814 | if (!EQ (val, this)) |
1ee5d538 | 815 | { |
57d53d1b KH |
816 | int different_value = 1; |
817 | ||
818 | if (NILP (val)) | |
819 | { | |
c805dec0 | 820 | if (! NILP (XCHAR_TABLE (top)->parent)) |
57d53d1b | 821 | { |
c805dec0 | 822 | Lisp_Object parent = XCHAR_TABLE (top)->parent; |
57d53d1b KH |
823 | Lisp_Object temp = XCHAR_TABLE (parent)->parent; |
824 | ||
825 | /* This is to get a value of FROM in PARENT | |
826 | without checking the parent of PARENT. */ | |
742af32f | 827 | set_char_table_parent (parent, Qnil); |
57d53d1b | 828 | val = CHAR_TABLE_REF (parent, from); |
742af32f | 829 | set_char_table_parent (parent, temp); |
57d53d1b KH |
830 | XSETCDR (range, make_number (c - 1)); |
831 | val = map_sub_char_table (c_function, function, | |
832 | parent, arg, val, range, | |
c805dec0 | 833 | parent); |
d0827857 | 834 | if (EQ (val, this)) |
57d53d1b KH |
835 | different_value = 0; |
836 | } | |
837 | } | |
838 | if (! NILP (val) && different_value) | |
1ee5d538 | 839 | { |
8f924df7 | 840 | XSETCDR (range, make_number (c - 1)); |
0a4bacdc | 841 | if (EQ (XCAR (range), XCDR (range))) |
2f76e15e KH |
842 | { |
843 | if (c_function) | |
844 | (*c_function) (arg, XCAR (range), val); | |
845 | else | |
c805dec0 KH |
846 | { |
847 | if (decoder) | |
848 | val = decoder (top, val); | |
849 | call2 (function, XCAR (range), val); | |
850 | } | |
2f76e15e | 851 | } |
1ee5d538 | 852 | else |
2f76e15e KH |
853 | { |
854 | if (c_function) | |
855 | (*c_function) (arg, range, val); | |
856 | else | |
c805dec0 KH |
857 | { |
858 | if (decoder) | |
859 | val = decoder (top, val); | |
860 | call2 (function, range, val); | |
861 | } | |
2f76e15e | 862 | } |
1ee5d538 | 863 | } |
2f76e15e | 864 | val = this; |
57d53d1b | 865 | from = c; |
8f924df7 | 866 | XSETCAR (range, make_number (c)); |
1ee5d538 | 867 | } |
1ee5d538 | 868 | } |
57d53d1b | 869 | XSETCDR (range, make_number (to)); |
1ee5d538 KH |
870 | } |
871 | return val; | |
872 | } | |
873 | ||
874 | ||
875 | /* Map C_FUNCTION or FUNCTION over TABLE, calling it for each | |
876 | character or group of characters that share a value. | |
877 | ||
8f924df7 | 878 | ARG is passed to C_FUNCTION when that is called. */ |
1ee5d538 KH |
879 | |
880 | void | |
c805dec0 KH |
881 | map_char_table (void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object), |
882 | Lisp_Object function, Lisp_Object table, Lisp_Object arg) | |
1ee5d538 | 883 | { |
c805dec0 KH |
884 | Lisp_Object range, val, parent; |
885 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
886 | uniprop_decoder_t decoder = UNIPROP_GET_DECODER (table); | |
1ee5d538 | 887 | |
57d53d1b | 888 | range = Fcons (make_number (0), make_number (MAX_CHAR)); |
c805dec0 KH |
889 | parent = XCHAR_TABLE (table)->parent; |
890 | ||
891 | GCPRO4 (table, arg, range, parent); | |
2f76e15e KH |
892 | val = XCHAR_TABLE (table)->ascii; |
893 | if (SUB_CHAR_TABLE_P (val)) | |
894 | val = XSUB_CHAR_TABLE (val)->contents[0]; | |
57d53d1b | 895 | val = map_sub_char_table (c_function, function, table, arg, val, range, |
c805dec0 KH |
896 | table); |
897 | ||
57d53d1b KH |
898 | /* If VAL is nil and TABLE has a parent, we must consult the parent |
899 | recursively. */ | |
900 | while (NILP (val) && ! NILP (XCHAR_TABLE (table)->parent)) | |
1ee5d538 | 901 | { |
c805dec0 | 902 | Lisp_Object temp; |
57d53d1b KH |
903 | int from = XINT (XCAR (range)); |
904 | ||
c805dec0 KH |
905 | parent = XCHAR_TABLE (table)->parent; |
906 | temp = XCHAR_TABLE (parent)->parent; | |
57d53d1b KH |
907 | /* This is to get a value of FROM in PARENT without checking the |
908 | parent of PARENT. */ | |
742af32f | 909 | set_char_table_parent (parent, Qnil); |
57d53d1b | 910 | val = CHAR_TABLE_REF (parent, from); |
742af32f | 911 | set_char_table_parent (parent, temp); |
57d53d1b | 912 | val = map_sub_char_table (c_function, function, parent, arg, val, range, |
c805dec0 | 913 | parent); |
57d53d1b | 914 | table = parent; |
1ee5d538 | 915 | } |
2f76e15e KH |
916 | |
917 | if (! NILP (val)) | |
918 | { | |
0a4bacdc KH |
919 | if (EQ (XCAR (range), XCDR (range))) |
920 | { | |
921 | if (c_function) | |
922 | (*c_function) (arg, XCAR (range), val); | |
923 | else | |
c805dec0 KH |
924 | { |
925 | if (decoder) | |
926 | val = decoder (table, val); | |
927 | call2 (function, XCAR (range), val); | |
928 | } | |
0a4bacdc | 929 | } |
2f76e15e | 930 | else |
0a4bacdc KH |
931 | { |
932 | if (c_function) | |
933 | (*c_function) (arg, range, val); | |
934 | else | |
c805dec0 KH |
935 | { |
936 | if (decoder) | |
937 | val = decoder (table, val); | |
938 | call2 (function, range, val); | |
939 | } | |
0a4bacdc | 940 | } |
2f76e15e | 941 | } |
26132fb5 AS |
942 | |
943 | UNGCPRO; | |
1ee5d538 KH |
944 | } |
945 | ||
946 | DEFUN ("map-char-table", Fmap_char_table, Smap_char_table, | |
947 | 2, 2, 0, | |
55802e4a CY |
948 | doc: /* Call FUNCTION for each character in CHAR-TABLE that has non-nil value. |
949 | FUNCTION is called with two arguments, KEY and VALUE. | |
950 | KEY is a character code or a cons of character codes specifying a | |
951 | range of characters that have the same value. | |
952 | VALUE is what (char-table-range CHAR-TABLE KEY) returns. */) | |
5842a27b | 953 | (Lisp_Object function, Lisp_Object char_table) |
1ee5d538 KH |
954 | { |
955 | CHECK_CHAR_TABLE (char_table); | |
956 | ||
8f924df7 | 957 | map_char_table (NULL, function, char_table, char_table); |
1ee5d538 KH |
958 | return Qnil; |
959 | } | |
960 | ||
e15009d9 KH |
961 | |
962 | static void | |
dd4c5104 DN |
963 | map_sub_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object), |
964 | Lisp_Object function, Lisp_Object table, Lisp_Object arg, | |
965 | Lisp_Object range, struct charset *charset, | |
966 | unsigned from, unsigned to) | |
e15009d9 KH |
967 | { |
968 | struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table); | |
969 | int depth = XINT (tbl->depth); | |
970 | int c, i; | |
971 | ||
972 | if (depth < 3) | |
973 | for (i = 0, c = XINT (tbl->min_char); i < chartab_size[depth]; | |
974 | i++, c += chartab_chars[depth]) | |
975 | { | |
976 | Lisp_Object this; | |
977 | ||
978 | this = tbl->contents[i]; | |
979 | if (SUB_CHAR_TABLE_P (this)) | |
980 | map_sub_char_table_for_charset (c_function, function, this, arg, | |
981 | range, charset, from, to); | |
982 | else | |
983 | { | |
984 | if (! NILP (XCAR (range))) | |
985 | { | |
986 | XSETCDR (range, make_number (c - 1)); | |
987 | if (c_function) | |
988 | (*c_function) (arg, range); | |
989 | else | |
990 | call2 (function, range, arg); | |
991 | } | |
992 | XSETCAR (range, Qnil); | |
993 | } | |
994 | } | |
995 | else | |
996 | for (i = 0, c = XINT (tbl->min_char); i < chartab_size[depth]; i++, c ++) | |
997 | { | |
998 | Lisp_Object this; | |
999 | unsigned code; | |
1000 | ||
1001 | this = tbl->contents[i]; | |
1002 | if (NILP (this) | |
1003 | || (charset | |
1004 | && (code = ENCODE_CHAR (charset, c), | |
1005 | (code < from || code > to)))) | |
1006 | { | |
1007 | if (! NILP (XCAR (range))) | |
1008 | { | |
1009 | XSETCDR (range, make_number (c - 1)); | |
1010 | if (c_function) | |
bc85ac78 | 1011 | (*c_function) (arg, range); |
e15009d9 KH |
1012 | else |
1013 | call2 (function, range, arg); | |
1014 | XSETCAR (range, Qnil); | |
1015 | } | |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | if (NILP (XCAR (range))) | |
1020 | XSETCAR (range, make_number (c)); | |
1021 | } | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | ||
a6805333 | 1026 | /* Support function for `map-charset-chars'. Map C_FUNCTION or |
60612c8f | 1027 | FUNCTION over TABLE, calling it for each character or a group of |
a6805333 KH |
1028 | succeeding characters that have non-nil value in TABLE. TABLE is a |
1029 | "mapping table" or a "deunifier table" of a certain charset. | |
1030 | ||
1031 | If CHARSET is not NULL (this is the case that `map-charset-chars' | |
1032 | is called with non-nil FROM-CODE and TO-CODE), it is a charset who | |
1033 | owns TABLE, and the function is called only on a character in the | |
1034 | range FROM and TO. FROM and TO are not character codes, but code | |
1035 | points of a character in CHARSET. | |
1036 | ||
1037 | This function is called in these two cases: | |
1038 | ||
1039 | (1) A charset has a mapping file name in :map property. | |
1040 | ||
1041 | (2) A charset has an upper code space in :offset property and a | |
1042 | mapping file name in :unify-map property. In this case, this | |
1043 | function is called only for characters in the Unicode code space. | |
1044 | Characters in upper code space are handled directly in | |
1045 | map_charset_chars. */ | |
1046 | ||
e15009d9 | 1047 | void |
fb93dbc2 | 1048 | map_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object), |
dd4c5104 DN |
1049 | Lisp_Object function, Lisp_Object table, Lisp_Object arg, |
1050 | struct charset *charset, | |
1051 | unsigned from, unsigned to) | |
e15009d9 KH |
1052 | { |
1053 | Lisp_Object range; | |
1054 | int c, i; | |
26132fb5 | 1055 | struct gcpro gcpro1; |
e15009d9 | 1056 | |
8f924df7 | 1057 | range = Fcons (Qnil, Qnil); |
26132fb5 | 1058 | GCPRO1 (range); |
e15009d9 KH |
1059 | |
1060 | for (i = 0, c = 0; i < chartab_size[0]; i++, c += chartab_chars[0]) | |
1061 | { | |
1062 | Lisp_Object this; | |
1063 | ||
1064 | this = XCHAR_TABLE (table)->contents[i]; | |
1065 | if (SUB_CHAR_TABLE_P (this)) | |
1066 | map_sub_char_table_for_charset (c_function, function, this, arg, | |
1067 | range, charset, from, to); | |
1068 | else | |
1069 | { | |
1070 | if (! NILP (XCAR (range))) | |
1071 | { | |
1072 | XSETCDR (range, make_number (c - 1)); | |
1073 | if (c_function) | |
1074 | (*c_function) (arg, range); | |
1075 | else | |
1076 | call2 (function, range, arg); | |
1077 | } | |
1078 | XSETCAR (range, Qnil); | |
1079 | } | |
1080 | } | |
1081 | if (! NILP (XCAR (range))) | |
1082 | { | |
1083 | XSETCDR (range, make_number (c - 1)); | |
1084 | if (c_function) | |
1085 | (*c_function) (arg, range); | |
1086 | else | |
1087 | call2 (function, range, arg); | |
1088 | } | |
26132fb5 AS |
1089 | |
1090 | UNGCPRO; | |
e15009d9 KH |
1091 | } |
1092 | ||
1ee5d538 | 1093 | \f |
c805dec0 KH |
1094 | /* Unicode character property tables. |
1095 | ||
474a8465 EZ |
1096 | This section provides a convenient and efficient way to get Unicode |
1097 | character properties of characters from C code (from Lisp, you must | |
1098 | use get-char-code-property). | |
c805dec0 | 1099 | |
474a8465 EZ |
1100 | The typical usage is to get a char-table object for a specific |
1101 | property like this (use of the "bidi-class" property below is just | |
1102 | an example): | |
c805dec0 KH |
1103 | |
1104 | Lisp_Object bidi_class_table = uniprop_table (intern ("bidi-class")); | |
1105 | ||
474a8465 EZ |
1106 | (uniprop_table can return nil if it fails to find data for the |
1107 | named property, or if it fails to load the appropriate Lisp support | |
1108 | file, so the return value should be tested to be non-nil, before it | |
1109 | is used.) | |
c805dec0 | 1110 | |
474a8465 EZ |
1111 | To get a property value for character CH use CHAR_TABLE_REF: |
1112 | ||
1113 | Lisp_Object bidi_class = CHAR_TABLE_REF (bidi_class_table, CH); | |
c805dec0 KH |
1114 | |
1115 | In this case, what you actually get is an index number to the | |
1116 | vector of property values (symbols nil, L, R, etc). | |
1117 | ||
474a8465 EZ |
1118 | The full list of Unicode character properties supported by Emacs is |
1119 | documented in the ELisp manual, in the node "Character Properties". | |
1120 | ||
c805dec0 KH |
1121 | A table for Unicode character property has these characteristics: |
1122 | ||
1123 | o The purpose is `char-code-property-table', which implies that the | |
1124 | table has 5 extra slots. | |
1125 | ||
1126 | o The second extra slot is a Lisp function, an index (integer) to | |
1127 | the array uniprop_decoder[], or nil. If it is a Lisp function, we | |
1128 | can't use such a table from C (at the moment). If it is nil, it | |
1129 | means that we don't have to decode values. | |
1130 | ||
1131 | o The third extra slot is a Lisp function, an index (integer) to | |
474a8465 | 1132 | the array uniprop_encoder[], or nil. If it is a Lisp function, we |
c805dec0 KH |
1133 | can't use such a table from C (at the moment). If it is nil, it |
1134 | means that we don't have to encode values. */ | |
1135 | ||
1136 | ||
1137 | /* Uncompress the IDXth element of sub-char-table TABLE. */ | |
1138 | ||
1139 | static Lisp_Object | |
1140 | uniprop_table_uncompress (Lisp_Object table, int idx) | |
1141 | { | |
1142 | Lisp_Object val = XSUB_CHAR_TABLE (table)->contents[idx]; | |
1143 | int min_char = (XINT (XSUB_CHAR_TABLE (table)->min_char) | |
1144 | + chartab_chars[2] * idx); | |
1145 | Lisp_Object sub = make_sub_char_table (3, min_char, Qnil); | |
c805dec0 | 1146 | const unsigned char *p, *pend; |
c805dec0 | 1147 | |
34dabdb7 | 1148 | set_sub_char_table_contents (table, idx, sub); |
c805dec0 KH |
1149 | p = SDATA (val), pend = p + SBYTES (val); |
1150 | if (*p == 1) | |
1151 | { | |
1152 | /* SIMPLE TABLE */ | |
1153 | p++; | |
1154 | idx = STRING_CHAR_ADVANCE (p); | |
1155 | while (p < pend && idx < chartab_chars[2]) | |
1156 | { | |
1157 | int v = STRING_CHAR_ADVANCE (p); | |
34dabdb7 | 1158 | set_sub_char_table_contents |
a098c930 | 1159 | (sub, idx++, v > 0 ? make_number (v) : Qnil); |
c805dec0 KH |
1160 | } |
1161 | } | |
1162 | else if (*p == 2) | |
1163 | { | |
1164 | /* RUN-LENGTH TABLE */ | |
1165 | p++; | |
1166 | for (idx = 0; p < pend; ) | |
1167 | { | |
1168 | int v = STRING_CHAR_ADVANCE (p); | |
1169 | int count = 1; | |
1170 | int len; | |
1171 | ||
1172 | if (p < pend) | |
1173 | { | |
1174 | count = STRING_CHAR_AND_LENGTH (p, len); | |
1175 | if (count < 128) | |
1176 | count = 1; | |
1177 | else | |
1178 | { | |
1179 | count -= 128; | |
1180 | p += len; | |
1181 | } | |
1182 | } | |
1183 | while (count-- > 0) | |
34dabdb7 | 1184 | set_sub_char_table_contents (sub, idx++, make_number (v)); |
c805dec0 KH |
1185 | } |
1186 | } | |
1187 | /* It seems that we don't need this function because C code won't need | |
1188 | to get a property that is compressed in this form. */ | |
1189 | #if 0 | |
1190 | else if (*p == 0) | |
1191 | { | |
1192 | /* WORD-LIST TABLE */ | |
1193 | } | |
1194 | #endif | |
1195 | return sub; | |
1196 | } | |
1197 | ||
1198 | ||
4c36be58 | 1199 | /* Decode VALUE as an element of char-table TABLE. */ |
c805dec0 KH |
1200 | |
1201 | static Lisp_Object | |
1202 | uniprop_decode_value_run_length (Lisp_Object table, Lisp_Object value) | |
1203 | { | |
1204 | if (VECTORP (XCHAR_TABLE (table)->extras[4])) | |
1205 | { | |
1206 | Lisp_Object valvec = XCHAR_TABLE (table)->extras[4]; | |
1207 | ||
1208 | if (XINT (value) >= 0 && XINT (value) < ASIZE (valvec)) | |
1209 | value = AREF (valvec, XINT (value)); | |
1210 | } | |
1211 | return value; | |
1212 | } | |
1213 | ||
1214 | static uniprop_decoder_t uniprop_decoder [] = | |
1215 | { uniprop_decode_value_run_length }; | |
1216 | ||
1217 | static int uniprop_decoder_count | |
1218 | = (sizeof uniprop_decoder) / sizeof (uniprop_decoder[0]); | |
1219 | ||
1220 | ||
1221 | /* Return the decoder of char-table TABLE or nil if none. */ | |
1222 | ||
1223 | static uniprop_decoder_t | |
1224 | uniprop_get_decoder (Lisp_Object table) | |
1225 | { | |
d311d28c | 1226 | EMACS_INT i; |
c805dec0 KH |
1227 | |
1228 | if (! INTEGERP (XCHAR_TABLE (table)->extras[1])) | |
1229 | return NULL; | |
1230 | i = XINT (XCHAR_TABLE (table)->extras[1]); | |
1231 | if (i < 0 || i >= uniprop_decoder_count) | |
1232 | return NULL; | |
1233 | return uniprop_decoder[i]; | |
1234 | } | |
1235 | ||
1236 | ||
1237 | /* Encode VALUE as an element of char-table TABLE which contains | |
1238 | characters as elements. */ | |
1239 | ||
1240 | static Lisp_Object | |
1241 | uniprop_encode_value_character (Lisp_Object table, Lisp_Object value) | |
1242 | { | |
1243 | if (! NILP (value) && ! CHARACTERP (value)) | |
1244 | wrong_type_argument (Qintegerp, value); | |
1245 | return value; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | /* Encode VALUE as an element of char-table TABLE which adopts RUN-LENGTH | |
1250 | compression. */ | |
1251 | ||
1252 | static Lisp_Object | |
1253 | uniprop_encode_value_run_length (Lisp_Object table, Lisp_Object value) | |
1254 | { | |
1255 | Lisp_Object *value_table = XVECTOR (XCHAR_TABLE (table)->extras[4])->contents; | |
1256 | int i, size = ASIZE (XCHAR_TABLE (table)->extras[4]); | |
1257 | ||
1258 | for (i = 0; i < size; i++) | |
1259 | if (EQ (value, value_table[i])) | |
1260 | break; | |
1261 | if (i == size) | |
1262 | wrong_type_argument (build_string ("Unicode property value"), value); | |
1263 | return make_number (i); | |
1264 | } | |
1265 | ||
1266 | ||
1267 | /* Encode VALUE as an element of char-table TABLE which adopts RUN-LENGTH | |
1268 | compression and contains numbers as elements . */ | |
1269 | ||
1270 | static Lisp_Object | |
1271 | uniprop_encode_value_numeric (Lisp_Object table, Lisp_Object value) | |
1272 | { | |
1273 | Lisp_Object *value_table = XVECTOR (XCHAR_TABLE (table)->extras[4])->contents; | |
1274 | int i, size = ASIZE (XCHAR_TABLE (table)->extras[4]); | |
1275 | ||
1276 | CHECK_NUMBER (value); | |
1277 | for (i = 0; i < size; i++) | |
1278 | if (EQ (value, value_table[i])) | |
1279 | break; | |
1280 | value = make_number (i); | |
1281 | if (i == size) | |
1282 | { | |
1283 | Lisp_Object args[2]; | |
1284 | ||
1285 | args[0] = XCHAR_TABLE (table)->extras[4]; | |
1286 | args[1] = Fmake_vector (make_number (1), value); | |
34dabdb7 | 1287 | set_char_table_extras (table, 4, Fvconcat (2, args)); |
c805dec0 KH |
1288 | } |
1289 | return make_number (i); | |
1290 | } | |
1291 | ||
1292 | static uniprop_encoder_t uniprop_encoder[] = | |
1293 | { uniprop_encode_value_character, | |
1294 | uniprop_encode_value_run_length, | |
1295 | uniprop_encode_value_numeric }; | |
1296 | ||
1297 | static int uniprop_encoder_count | |
1298 | = (sizeof uniprop_encoder) / sizeof (uniprop_encoder[0]); | |
1299 | ||
1300 | ||
1301 | /* Return the encoder of char-table TABLE or nil if none. */ | |
1302 | ||
1303 | static uniprop_decoder_t | |
1304 | uniprop_get_encoder (Lisp_Object table) | |
1305 | { | |
d311d28c | 1306 | EMACS_INT i; |
c805dec0 KH |
1307 | |
1308 | if (! INTEGERP (XCHAR_TABLE (table)->extras[2])) | |
1309 | return NULL; | |
1310 | i = XINT (XCHAR_TABLE (table)->extras[2]); | |
1311 | if (i < 0 || i >= uniprop_encoder_count) | |
1312 | return NULL; | |
1313 | return uniprop_encoder[i]; | |
1314 | } | |
1315 | ||
1316 | /* Return a char-table for Unicode character property PROP. This | |
1317 | function may load a Lisp file and thus may cause | |
1318 | garbage-collection. */ | |
1319 | ||
9a70f03d | 1320 | Lisp_Object |
c805dec0 KH |
1321 | uniprop_table (Lisp_Object prop) |
1322 | { | |
1323 | Lisp_Object val, table, result; | |
1324 | ||
1325 | val = Fassq (prop, Vchar_code_property_alist); | |
1326 | if (! CONSP (val)) | |
1327 | return Qnil; | |
1328 | table = XCDR (val); | |
1329 | if (STRINGP (table)) | |
1330 | { | |
1331 | struct gcpro gcpro1; | |
1332 | GCPRO1 (val); | |
1333 | result = Fload (concat2 (build_string ("international/"), table), | |
1334 | Qt, Qt, Qt, Qt); | |
1335 | UNGCPRO; | |
1336 | if (NILP (result)) | |
1337 | return Qnil; | |
1338 | table = XCDR (val); | |
1339 | } | |
1340 | if (! CHAR_TABLE_P (table) | |
1341 | || ! UNIPROP_TABLE_P (table)) | |
1342 | return Qnil; | |
1343 | val = XCHAR_TABLE (table)->extras[1]; | |
1344 | if (INTEGERP (val) | |
1345 | ? (XINT (val) < 0 || XINT (val) >= uniprop_decoder_count) | |
1346 | : ! NILP (val)) | |
1347 | return Qnil; | |
1348 | /* Prepare ASCII values in advance for CHAR_TABLE_REF. */ | |
742af32f | 1349 | set_char_table_ascii (table, char_table_ascii (table)); |
c805dec0 KH |
1350 | return table; |
1351 | } | |
1352 | ||
1353 | DEFUN ("unicode-property-table-internal", Funicode_property_table_internal, | |
1354 | Sunicode_property_table_internal, 1, 1, 0, | |
1355 | doc: /* Return a char-table for Unicode character property PROP. | |
1356 | Use `get-unicode-property-internal' and | |
1357 | `put-unicode-property-internal' instead of `aref' and `aset' to get | |
1358 | and put an element value. */) | |
1359 | (Lisp_Object prop) | |
1360 | { | |
1361 | Lisp_Object table = uniprop_table (prop); | |
1362 | ||
1363 | if (CHAR_TABLE_P (table)) | |
1364 | return table; | |
1365 | return Fcdr (Fassq (prop, Vchar_code_property_alist)); | |
1366 | } | |
1367 | ||
1368 | DEFUN ("get-unicode-property-internal", Fget_unicode_property_internal, | |
1369 | Sget_unicode_property_internal, 2, 2, 0, | |
1370 | doc: /* Return an element of CHAR-TABLE for character CH. | |
1371 | CHAR-TABLE must be what returned by `unicode-property-table-internal'. */) | |
1372 | (Lisp_Object char_table, Lisp_Object ch) | |
1373 | { | |
1374 | Lisp_Object val; | |
1375 | uniprop_decoder_t decoder; | |
1376 | ||
1377 | CHECK_CHAR_TABLE (char_table); | |
1378 | CHECK_CHARACTER (ch); | |
1379 | if (! UNIPROP_TABLE_P (char_table)) | |
1380 | error ("Invalid Unicode property table"); | |
1381 | val = CHAR_TABLE_REF (char_table, XINT (ch)); | |
1382 | decoder = uniprop_get_decoder (char_table); | |
1383 | return (decoder ? decoder (char_table, val) : val); | |
1384 | } | |
1385 | ||
1386 | DEFUN ("put-unicode-property-internal", Fput_unicode_property_internal, | |
1387 | Sput_unicode_property_internal, 3, 3, 0, | |
1388 | doc: /* Set an element of CHAR-TABLE for character CH to VALUE. | |
1389 | CHAR-TABLE must be what returned by `unicode-property-table-internal'. */) | |
1390 | (Lisp_Object char_table, Lisp_Object ch, Lisp_Object value) | |
1391 | { | |
1392 | uniprop_encoder_t encoder; | |
1393 | ||
1394 | CHECK_CHAR_TABLE (char_table); | |
1395 | CHECK_CHARACTER (ch); | |
1396 | if (! UNIPROP_TABLE_P (char_table)) | |
1397 | error ("Invalid Unicode property table"); | |
1398 | encoder = uniprop_get_encoder (char_table); | |
1399 | if (encoder) | |
1400 | value = encoder (char_table, value); | |
1401 | CHAR_TABLE_SET (char_table, XINT (ch), value); | |
1402 | return Qnil; | |
1403 | } | |
1404 | ||
1405 | \f | |
1ee5d538 | 1406 | void |
971de7fb | 1407 | syms_of_chartab (void) |
1ee5d538 | 1408 | { |
c805dec0 KH |
1409 | DEFSYM (Qchar_code_property_table, "char-code-property-table"); |
1410 | ||
1ee5d538 KH |
1411 | defsubr (&Smake_char_table); |
1412 | defsubr (&Schar_table_parent); | |
1413 | defsubr (&Schar_table_subtype); | |
1414 | defsubr (&Sset_char_table_parent); | |
1415 | defsubr (&Schar_table_extra_slot); | |
1416 | defsubr (&Sset_char_table_extra_slot); | |
1417 | defsubr (&Schar_table_range); | |
1418 | defsubr (&Sset_char_table_range); | |
1419 | defsubr (&Sset_char_table_default); | |
1420 | defsubr (&Soptimize_char_table); | |
1421 | defsubr (&Smap_char_table); | |
c805dec0 KH |
1422 | defsubr (&Sunicode_property_table_internal); |
1423 | defsubr (&Sget_unicode_property_internal); | |
1424 | defsubr (&Sput_unicode_property_internal); | |
1425 | ||
1426 | /* Each element has the form (PROP . TABLE). | |
1427 | PROP is a symbol representing a character property. | |
1428 | TABLE is a char-table containing the property value for each character. | |
1429 | TABLE may be a name of file to load to build a char-table. | |
1430 | This variable should be modified only through | |
1431 | `define-char-code-property'. */ | |
1432 | ||
1433 | DEFVAR_LISP ("char-code-property-alist", Vchar_code_property_alist, | |
1434 | doc: /* Alist of character property name vs char-table containing property values. | |
1435 | Internal use only. */); | |
1436 | Vchar_code_property_alist = Qnil; | |
1ee5d538 | 1437 | } |