1 /* Header for multibyte character handler.
2 Copyright (C) 1995, 1997, 1998 Electrotechnical Laboratory, JAPAN.
3 Licensed to the Free Software Foundation.
4 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
5 National Institute of Advanced Industrial Science and Technology (AIST)
6 Registration Number H13PRO009
8 This file is part of GNU Emacs.
10 GNU Emacs is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation, either version 3 of the License, or
13 (at your option) any later version.
15 GNU Emacs is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
23 #ifndef EMACS_CHARACTER_H
24 #define EMACS_CHARACTER_H
30 /* character code 1st byte byte sequence
31 -------------- -------- -------------
33 80-7FF C2..DF 110xxxxx 10xxxxxx
34 800-FFFF E0..EF 1110xxxx 10xxxxxx 10xxxxxx
35 10000-1FFFFF F0..F7 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
36 200000-3FFF7F F8 11111000 1000xxxx 10xxxxxx 10xxxxxx 10xxxxxx
37 3FFF80-3FFFFF C0..C1 1100000x 10xxxxxx (for eight-bit-char)
40 invalid 1st byte 80..BF 10xxxxxx
41 F9..FF 11111xxx (xxx != 000)
44 /* Maximum character code ((1 << CHARACTERBITS) - 1). */
45 #define MAX_CHAR 0x3FFFFF
47 /* Maximum Unicode character code. */
48 #define MAX_UNICODE_CHAR 0x10FFFF
50 /* Maximum N-byte character codes. */
51 #define MAX_1_BYTE_CHAR 0x7F
52 #define MAX_2_BYTE_CHAR 0x7FF
53 #define MAX_3_BYTE_CHAR 0xFFFF
54 #define MAX_4_BYTE_CHAR 0x1FFFFF
55 #define MAX_5_BYTE_CHAR 0x3FFF7F
57 /* Minimum leading code of multibyte characters. */
58 #define MIN_MULTIBYTE_LEADING_CODE 0xC0
59 /* Maximum leading code of multibyte characters. */
60 #define MAX_MULTIBYTE_LEADING_CODE 0xF8
62 /* Unicode character values. */
65 NO_BREAK_SPACE
= 0x00A0,
67 ZERO_WIDTH_NON_JOINER
= 0x200C,
68 ZERO_WIDTH_JOINER
= 0x200D,
70 NON_BREAKING_HYPHEN
= 0x2011,
71 LEFT_SINGLE_QUOTATION_MARK
= 0x2018,
72 RIGHT_SINGLE_QUOTATION_MARK
= 0x2019,
73 PARAGRAPH_SEPARATOR
= 0x2029,
74 LEFT_POINTING_ANGLE_BRACKET
= 0x2329,
75 RIGHT_POINTING_ANGLE_BRACKET
= 0x232A,
76 LEFT_ANGLE_BRACKET
= 0x3008,
77 RIGHT_ANGLE_BRACKET
= 0x3009,
78 OBJECT_REPLACEMENT_CHARACTER
= 0xFFFC,
81 /* Nonzero iff C is a character that corresponds to a raw 8-bit
83 #define CHAR_BYTE8_P(c) ((c) > MAX_5_BYTE_CHAR)
85 /* Return the character code for raw 8-bit byte BYTE. */
86 #define BYTE8_TO_CHAR(byte) ((byte) + 0x3FFF00)
88 #define UNIBYTE_TO_CHAR(byte) \
89 (ASCII_CHAR_P (byte) ? (byte) : BYTE8_TO_CHAR (byte))
91 /* Return the raw 8-bit byte for character C. */
92 #define CHAR_TO_BYTE8(c) (CHAR_BYTE8_P (c) ? (c) - 0x3FFF00 : (c & 0xFF))
94 /* Return the raw 8-bit byte for character C,
95 or -1 if C doesn't correspond to a byte. */
96 #define CHAR_TO_BYTE_SAFE(c) \
97 (ASCII_CHAR_P (c) ? c : (CHAR_BYTE8_P (c) ? (c) - 0x3FFF00 : -1))
99 /* Nonzero iff BYTE is the 1st byte of a multibyte form of a character
100 that corresponds to a raw 8-bit byte. */
101 #define CHAR_BYTE8_HEAD_P(byte) ((byte) == 0xC0 || (byte) == 0xC1)
103 /* If C is not ASCII, make it unibyte. */
104 #define MAKE_CHAR_UNIBYTE(c) \
106 if (! ASCII_CHAR_P (c)) \
107 c = CHAR_TO_BYTE8 (c); \
111 /* If C is not ASCII, make it multibyte. Assumes C < 256. */
112 #define MAKE_CHAR_MULTIBYTE(c) \
113 (eassert ((c) >= 0 && (c) < 256), (c) = UNIBYTE_TO_CHAR (c))
115 /* This is the maximum byte length of multibyte form. */
116 #define MAX_MULTIBYTE_LENGTH 5
118 /* Nonzero iff X is a character. */
119 #define CHARACTERP(x) (NATNUMP (x) && XFASTINT (x) <= MAX_CHAR)
121 /* Nonzero iff C is valid as a character code. */
122 #define CHAR_VALID_P(c) UNSIGNED_CMP (c, <=, MAX_CHAR)
124 /* Check if Lisp object X is a character or not. */
125 #define CHECK_CHARACTER(x) \
126 CHECK_TYPE (CHARACTERP (x), Qcharacterp, x)
128 #define CHECK_CHARACTER_CAR(x) \
130 Lisp_Object tmp = XCAR (x); \
131 CHECK_CHARACTER (tmp); \
132 XSETCAR ((x), tmp); \
135 #define CHECK_CHARACTER_CDR(x) \
137 Lisp_Object tmp = XCDR (x); \
138 CHECK_CHARACTER (tmp); \
139 XSETCDR ((x), tmp); \
142 /* Nonzero iff C is a character of code less than 0x100. */
143 #define SINGLE_BYTE_CHAR_P(c) UNSIGNED_CMP (c, <, 0x100)
145 /* Nonzero if character C has a printable glyph. */
146 #define CHAR_PRINTABLE_P(c) \
147 (((c) >= 32 && (c) < 127) \
148 || ! NILP (CHAR_TABLE_REF (Vprintable_chars, (c))))
150 /* Return byte length of multibyte form for character C. */
151 #define CHAR_BYTES(c) \
152 ( (c) <= MAX_1_BYTE_CHAR ? 1 \
153 : (c) <= MAX_2_BYTE_CHAR ? 2 \
154 : (c) <= MAX_3_BYTE_CHAR ? 3 \
155 : (c) <= MAX_4_BYTE_CHAR ? 4 \
156 : (c) <= MAX_5_BYTE_CHAR ? 5 \
160 /* Return the leading code of multibyte form of C. */
161 #define CHAR_LEADING_CODE(c) \
162 ((c) <= MAX_1_BYTE_CHAR ? c \
163 : (c) <= MAX_2_BYTE_CHAR ? (0xC0 | ((c) >> 6)) \
164 : (c) <= MAX_3_BYTE_CHAR ? (0xE0 | ((c) >> 12)) \
165 : (c) <= MAX_4_BYTE_CHAR ? (0xF0 | ((c) >> 18)) \
166 : (c) <= MAX_5_BYTE_CHAR ? 0xF8 \
167 : (0xC0 | (((c) >> 6) & 0x01)))
170 /* Store multibyte form of the character C in P. The caller should
171 allocate at least MAX_MULTIBYTE_LENGTH bytes area at P in advance.
172 Returns the length of the multibyte form. */
174 #define CHAR_STRING(c, p) \
175 (UNSIGNED_CMP (c, <=, MAX_1_BYTE_CHAR) \
178 : UNSIGNED_CMP (c, <=, MAX_2_BYTE_CHAR) \
179 ? ((p)[0] = (0xC0 | ((c) >> 6)), \
180 (p)[1] = (0x80 | ((c) & 0x3F)), \
182 : UNSIGNED_CMP (c, <=, MAX_3_BYTE_CHAR) \
183 ? ((p)[0] = (0xE0 | ((c) >> 12)), \
184 (p)[1] = (0x80 | (((c) >> 6) & 0x3F)), \
185 (p)[2] = (0x80 | ((c) & 0x3F)), \
187 : verify_expr (sizeof (c) <= sizeof (unsigned), char_string (c, p)))
189 /* Store multibyte form of byte B in P. The caller should allocate at
190 least MAX_MULTIBYTE_LENGTH bytes area at P in advance. Returns the
191 length of the multibyte form. */
193 #define BYTE8_STRING(b, p) \
194 ((p)[0] = (0xC0 | (((b) >> 6) & 0x01)), \
195 (p)[1] = (0x80 | ((b) & 0x3F)), \
199 /* Store multibyte form of the character C in P and advance P to the
200 end of the multibyte form. The caller should allocate at least
201 MAX_MULTIBYTE_LENGTH bytes area at P in advance. */
203 #define CHAR_STRING_ADVANCE(c, p) \
205 if ((c) <= MAX_1_BYTE_CHAR) \
207 else if ((c) <= MAX_2_BYTE_CHAR) \
208 *(p)++ = (0xC0 | ((c) >> 6)), \
209 *(p)++ = (0x80 | ((c) & 0x3F)); \
210 else if ((c) <= MAX_3_BYTE_CHAR) \
211 *(p)++ = (0xE0 | ((c) >> 12)), \
212 *(p)++ = (0x80 | (((c) >> 6) & 0x3F)), \
213 *(p)++ = (0x80 | ((c) & 0x3F)); \
216 verify (sizeof (c) <= sizeof (unsigned)); \
217 (p) += char_string (c, p); \
222 /* Nonzero iff BYTE starts a non-ASCII character in a multibyte
224 #define LEADING_CODE_P(byte) (((byte) & 0xC0) == 0xC0)
226 /* Nonzero iff BYTE is a trailing code of a non-ASCII character in a
228 #define TRAILING_CODE_P(byte) (((byte) & 0xC0) == 0x80)
230 /* Nonzero iff BYTE starts a character in a multibyte form.
231 This is equivalent to:
232 (ASCII_CHAR_P (byte) || LEADING_CODE_P (byte)) */
233 #define CHAR_HEAD_P(byte) (((byte) & 0xC0) != 0x80)
235 /* How many bytes a character that starts with BYTE occupies in a
237 #define BYTES_BY_CHAR_HEAD(byte) \
238 (!((byte) & 0x80) ? 1 \
239 : !((byte) & 0x20) ? 2 \
240 : !((byte) & 0x10) ? 3 \
241 : !((byte) & 0x08) ? 4 \
245 /* The byte length of multibyte form at unibyte string P ending at
246 PEND. If STR doesn't point to a valid multibyte form, return 0. */
248 #define MULTIBYTE_LENGTH(p, pend) \
250 : !((p)[0] & 0x80) ? 1 \
251 : ((p + 1 >= pend) || (((p)[1] & 0xC0) != 0x80)) ? 0 \
252 : ((p)[0] & 0xE0) == 0xC0 ? 2 \
253 : ((p + 2 >= pend) || (((p)[2] & 0xC0) != 0x80)) ? 0 \
254 : ((p)[0] & 0xF0) == 0xE0 ? 3 \
255 : ((p + 3 >= pend) || (((p)[3] & 0xC0) != 0x80)) ? 0 \
256 : ((p)[0] & 0xF8) == 0xF0 ? 4 \
257 : ((p + 4 >= pend) || (((p)[4] & 0xC0) != 0x80)) ? 0 \
258 : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
262 /* Like MULTIBYTE_LENGTH, but don't check the ending address. */
264 #define MULTIBYTE_LENGTH_NO_CHECK(p) \
265 (!((p)[0] & 0x80) ? 1 \
266 : ((p)[1] & 0xC0) != 0x80 ? 0 \
267 : ((p)[0] & 0xE0) == 0xC0 ? 2 \
268 : ((p)[2] & 0xC0) != 0x80 ? 0 \
269 : ((p)[0] & 0xF0) == 0xE0 ? 3 \
270 : ((p)[3] & 0xC0) != 0x80 ? 0 \
271 : ((p)[0] & 0xF8) == 0xF0 ? 4 \
272 : ((p)[4] & 0xC0) != 0x80 ? 0 \
273 : (p)[0] == 0xF8 && ((p)[1] & 0xF0) == 0x80 ? 5 \
276 /* If P is before LIMIT, advance P to the next character boundary.
277 Assumes that P is already at a character boundary of the same
278 multibyte form whose end address is LIMIT. */
280 #define NEXT_CHAR_BOUNDARY(p, limit) \
283 (p) += BYTES_BY_CHAR_HEAD (*(p)); \
287 /* If P is after LIMIT, advance P to the previous character boundary.
288 Assumes that P is already at a character boundary of the same
289 multibyte form whose beginning address is LIMIT. */
291 #define PREV_CHAR_BOUNDARY(p, limit) \
295 const unsigned char *chp = (p); \
298 } while (chp >= limit && ! CHAR_HEAD_P (*chp)); \
299 (p) = (BYTES_BY_CHAR_HEAD (*chp) == (p) - chp) ? chp : (p) - 1; \
303 /* Return the character code of character whose multibyte form is at
304 P. Note that this macro unifies CJK characters whose codepoints
305 are in the Private Use Areas (PUAs), so it might return a different
306 codepoint from the one actually stored at P. */
308 #define STRING_CHAR(p) \
311 : ! ((p)[0] & 0x20) \
312 ? (((((p)[0] & 0x1F) << 6) \
314 + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0)) \
315 : ! ((p)[0] & 0x10) \
316 ? ((((p)[0] & 0x0F) << 12) \
317 | (((p)[1] & 0x3F) << 6) \
319 : string_char ((p), NULL, NULL))
322 /* Like STRING_CHAR, but set ACTUAL_LEN to the length of multibyte
325 Note: This macro returns the actual length of the character's
326 multibyte sequence as it is stored in a buffer or string. The
327 character it returns might have a different codepoint that has a
328 different multibyte sequence of a different length, due to possible
329 unification of CJK characters inside string_char. Therefore do NOT
330 assume that the length returned by this macro is identical to the
331 length of the multibyte sequence of the character it returns. */
333 #define STRING_CHAR_AND_LENGTH(p, actual_len) \
335 ? ((actual_len) = 1, (p)[0]) \
336 : ! ((p)[0] & 0x20) \
337 ? ((actual_len) = 2, \
338 (((((p)[0] & 0x1F) << 6) \
340 + (((unsigned char) (p)[0]) < 0xC2 ? 0x3FFF80 : 0))) \
341 : ! ((p)[0] & 0x10) \
342 ? ((actual_len) = 3, \
343 ((((p)[0] & 0x0F) << 12) \
344 | (((p)[1] & 0x3F) << 6) \
345 | ((p)[2] & 0x3F))) \
346 : string_char ((p), NULL, &actual_len))
349 /* Like STRING_CHAR, but advance P to the end of multibyte form. */
351 #define STRING_CHAR_ADVANCE(p) \
354 : ! ((p)[0] & 0x20) \
356 ((((p)[-2] & 0x1F) << 6) \
358 | ((unsigned char) ((p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \
359 : ! ((p)[0] & 0x10) \
361 ((((p)[-3] & 0x0F) << 12) \
362 | (((p)[-2] & 0x3F) << 6) \
363 | ((p)[-1] & 0x3F))) \
364 : string_char ((p), &(p), NULL))
367 /* Fetch the "next" character from Lisp string STRING at byte position
368 BYTEIDX, character position CHARIDX. Store it into OUTPUT.
370 All the args must be side-effect-free.
371 BYTEIDX and CHARIDX must be lvalues;
372 we increment them past the character fetched. */
374 #define FETCH_STRING_CHAR_ADVANCE(OUTPUT, STRING, CHARIDX, BYTEIDX) \
378 if (STRING_MULTIBYTE (STRING)) \
380 unsigned char *chp = &SDATA (STRING)[BYTEIDX]; \
383 OUTPUT = STRING_CHAR_AND_LENGTH (chp, chlen); \
388 OUTPUT = SREF (STRING, BYTEIDX); \
394 /* Like FETCH_STRING_CHAR_ADVANCE, but return a multibyte character
395 even if STRING is unibyte. */
397 #define FETCH_STRING_CHAR_AS_MULTIBYTE_ADVANCE(OUTPUT, STRING, CHARIDX, BYTEIDX) \
401 if (STRING_MULTIBYTE (STRING)) \
403 unsigned char *chp = &SDATA (STRING)[BYTEIDX]; \
406 OUTPUT = STRING_CHAR_AND_LENGTH (chp, chlen); \
411 OUTPUT = SREF (STRING, BYTEIDX); \
413 MAKE_CHAR_MULTIBYTE (OUTPUT); \
419 /* Like FETCH_STRING_CHAR_ADVANCE, but assumes STRING is multibyte. */
421 #define FETCH_STRING_CHAR_ADVANCE_NO_CHECK(OUTPUT, STRING, CHARIDX, BYTEIDX) \
424 unsigned char *fetch_ptr = &SDATA (STRING)[BYTEIDX]; \
427 OUTPUT = STRING_CHAR_AND_LENGTH (fetch_ptr, fetch_len); \
428 BYTEIDX += fetch_len; \
434 /* Like FETCH_STRING_CHAR_ADVANCE, but fetch character from the current
437 #define FETCH_CHAR_ADVANCE(OUTPUT, CHARIDX, BYTEIDX) \
441 if (!NILP (BVAR (current_buffer, enable_multibyte_characters))) \
443 unsigned char *chp = BYTE_POS_ADDR (BYTEIDX); \
446 OUTPUT = STRING_CHAR_AND_LENGTH (chp, chlen); \
451 OUTPUT = *(BYTE_POS_ADDR (BYTEIDX)); \
458 /* Like FETCH_CHAR_ADVANCE, but assumes the current buffer is multibyte. */
460 #define FETCH_CHAR_ADVANCE_NO_CHECK(OUTPUT, CHARIDX, BYTEIDX) \
463 unsigned char *chp = BYTE_POS_ADDR (BYTEIDX); \
466 OUTPUT = STRING_CHAR_AND_LENGTH (chp, chlen); \
473 /* Increment the buffer byte position POS_BYTE of the current buffer to
474 the next character boundary. No range checking of POS. */
476 #define INC_POS(pos_byte) \
478 unsigned char *chp = BYTE_POS_ADDR (pos_byte); \
479 pos_byte += BYTES_BY_CHAR_HEAD (*chp); \
483 /* Decrement the buffer byte position POS_BYTE of the current buffer to
484 the previous character boundary. No range checking of POS. */
486 #define DEC_POS(pos_byte) \
488 unsigned char *chp; \
491 if (pos_byte < GPT_BYTE) \
492 chp = BEG_ADDR + pos_byte - BEG_BYTE; \
494 chp = BEG_ADDR + GAP_SIZE + pos_byte - BEG_BYTE; \
495 while (!CHAR_HEAD_P (*chp)) \
502 /* Increment both CHARPOS and BYTEPOS, each in the appropriate way. */
504 #define INC_BOTH(charpos, bytepos) \
508 if (NILP (BVAR (current_buffer, enable_multibyte_characters))) \
511 INC_POS ((bytepos)); \
516 /* Decrement both CHARPOS and BYTEPOS, each in the appropriate way. */
518 #define DEC_BOTH(charpos, bytepos) \
522 if (NILP (BVAR (current_buffer, enable_multibyte_characters))) \
525 DEC_POS ((bytepos)); \
530 /* Increment the buffer byte position POS_BYTE of the current buffer to
531 the next character boundary. This macro relies on the fact that
532 *GPT_ADDR and *Z_ADDR are always accessible and the values are
533 '\0'. No range checking of POS_BYTE. */
535 #define BUF_INC_POS(buf, pos_byte) \
537 unsigned char *chp = BUF_BYTE_ADDRESS (buf, pos_byte); \
538 pos_byte += BYTES_BY_CHAR_HEAD (*chp); \
542 /* Decrement the buffer byte position POS_BYTE of the current buffer to
543 the previous character boundary. No range checking of POS_BYTE. */
545 #define BUF_DEC_POS(buf, pos_byte) \
547 unsigned char *chp; \
549 if (pos_byte < BUF_GPT_BYTE (buf)) \
550 chp = BUF_BEG_ADDR (buf) + pos_byte - BEG_BYTE; \
552 chp = BUF_BEG_ADDR (buf) + BUF_GAP_SIZE (buf) + pos_byte - BEG_BYTE;\
553 while (!CHAR_HEAD_P (*chp)) \
561 /* Return a non-outlandish value for the tab width. */
563 #define SANE_TAB_WIDTH(buf) \
564 sanitize_tab_width (XFASTINT (BVAR (buf, tab_width)))
566 sanitize_tab_width (EMACS_INT width
)
568 return 0 < width
&& width
<= 1000 ? width
: 8;
571 /* Return the width of ASCII character C. The width is measured by
572 how many columns C will occupy on the screen when displayed in the
575 #define ASCII_CHAR_WIDTH(c) \
578 ? SANE_TAB_WIDTH (current_buffer) \
579 : (c == '\n' ? 0 : (NILP (BVAR (current_buffer, ctl_arrow)) ? 4 : 2))) \
582 : ((NILP (BVAR (current_buffer, ctl_arrow)) ? 4 : 2))))
584 /* Return a non-outlandish value for a character width. */
587 sanitize_char_width (EMACS_INT width
)
589 return 0 <= width
&& width
<= 1000 ? width
: 1000;
592 /* Return the width of character C. The width is measured by how many
593 columns C will occupy on the screen when displayed in the current
596 #define CHAR_WIDTH(c) \
598 ? ASCII_CHAR_WIDTH (c) \
599 : sanitize_char_width (XINT (CHAR_TABLE_REF (Vchar_width_table, c))))
601 /* If C is a variation selector, return the index of the
602 variation selector (1..256). Otherwise, return 0. */
604 #define CHAR_VARIATION_SELECTOR_P(c) \
606 : (c) <= 0xFE0F ? (c) - 0xFE00 + 1 \
607 : (c) < 0xE0100 ? 0 \
608 : (c) <= 0xE01EF ? (c) - 0xE0100 + 17 \
611 /* If C is a high surrogate, return 1. If C is a low surrogate,
612 return 2. Otherwise, return 0. */
614 #define CHAR_SURROGATE_PAIR_P(c) \
616 : (c) <= 0xDBFF ? 1 \
617 : (c) <= 0xDFFF ? 2 \
620 /* Data type for Unicode general category.
622 The order of members must be in sync with the 8th element of the
623 member of unidata-prop-alist (in admin/unidata/unidata-gen.el) for
624 Unicode character property `general-category'. */
627 UNICODE_CATEGORY_UNKNOWN
= 0,
658 } unicode_category_t
;
660 extern EMACS_INT
char_resolve_modifier_mask (EMACS_INT
) ATTRIBUTE_CONST
;
661 extern int char_string (unsigned, unsigned char *);
662 extern int string_char (const unsigned char *,
663 const unsigned char **, int *);
665 extern int translate_char (Lisp_Object
, int c
);
666 extern ptrdiff_t count_size_as_multibyte (const unsigned char *, ptrdiff_t);
667 extern ptrdiff_t str_as_multibyte (unsigned char *, ptrdiff_t, ptrdiff_t,
669 extern ptrdiff_t str_to_multibyte (unsigned char *, ptrdiff_t, ptrdiff_t);
670 extern ptrdiff_t str_as_unibyte (unsigned char *, ptrdiff_t);
671 extern ptrdiff_t str_to_unibyte (const unsigned char *, unsigned char *,
673 extern ptrdiff_t strwidth (const char *, ptrdiff_t);
674 extern ptrdiff_t c_string_width (const unsigned char *, ptrdiff_t, int,
675 ptrdiff_t *, ptrdiff_t *);
676 extern ptrdiff_t lisp_string_width (Lisp_Object
, ptrdiff_t,
677 ptrdiff_t *, ptrdiff_t *);
679 extern Lisp_Object Vchar_unify_table
;
680 extern Lisp_Object
string_escape_byte8 (Lisp_Object
);
682 extern bool alphabeticp (int);
683 extern bool decimalnump (int);
684 extern bool graphicp (int);
685 extern bool printablep (int);
687 /* Return a translation table of id number ID. */
688 #define GET_TRANSLATION_TABLE(id) \
689 (XCDR (XVECTOR (Vtranslation_table_vector)->contents[(id)]))
691 /* Look up the element in char table OBJ at index CH, and return it as
692 an integer. If the element is not a character, return CH itself. */
695 char_table_translate (Lisp_Object obj
, int ch
)
697 /* This internal function is expected to be called with valid arguments,
698 so there is a eassert instead of CHECK_xxx for the sake of speed. */
699 eassert (CHAR_VALID_P (ch
));
700 eassert (CHAR_TABLE_P (obj
));
701 obj
= CHAR_TABLE_REF (obj
, ch
);
702 return CHARACTERP (obj
) ? XINT (obj
) : ch
;
707 #endif /* EMACS_CHARACTER_H */