15b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey#include "vterm_internal.h" 25b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 35b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// ### The following from http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c 45b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// With modifications: 55b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// made functions static 65b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// moved 'combining' table to file scope, so other functions can see it 75b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// ################################################################### 85b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 95b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* 105b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * This is an implementation of wcwidth() and wcswidth() (defined in 115b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * IEEE Std 1002.1-2001) for Unicode. 125b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 135b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html 145b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html 155b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 165b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * In fixed-width output devices, Latin characters all occupy a single 175b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * "cell" position of equal width, whereas ideographic CJK characters 185b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * occupy two such cells. Interoperability between terminal-line 195b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * applications and (teletype-style) character terminals using the 205b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * UTF-8 encoding requires agreement on which character should advance 215b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * the cursor by how many cell positions. No established formal 225b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * standards exist at present on which Unicode character shall occupy 235b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * how many cell positions on character terminals. These routines are 245b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * a first attempt of defining such behavior based on simple rules 255b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * applied to data provided by the Unicode Consortium. 265b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 275b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * For some graphical characters, the Unicode standard explicitly 285b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * defines a character-cell width via the definition of the East Asian 295b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes. 305b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * In all these cases, there is no ambiguity about which width a 315b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * terminal shall use. For characters in the East Asian Ambiguous (A) 325b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * class, the width choice depends purely on a preference of backward 335b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * compatibility with either historic CJK or Western practice. 345b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Choosing single-width for these characters is easy to justify as 355b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * the appropriate long-term solution, as the CJK practice of 365b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * displaying these characters as double-width comes from historic 375b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * implementation simplicity (8-bit encoded characters were displayed 385b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * single-width and 16-bit ones double-width, even for Greek, 395b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Cyrillic, etc.) and not any typographic considerations. 405b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 415b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Much less clear is the choice of width for the Not East Asian 425b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * (Neutral) class. Existing practice does not dictate a width for any 435b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * of these characters. It would nevertheless make sense 445b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * typographically to allocate two character cells to characters such 455b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be 465b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * represented adequately with a single-width glyph. The following 475b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * routines at present merely assign a single-cell width to all 485b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * neutral characters, in the interest of simplicity. This is not 495b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * entirely satisfactory and should be reconsidered before 505b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * establishing a formal standard in this area. At the moment, the 515b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * decision which Not East Asian (Neutral) characters should be 525b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * represented by double-width glyphs cannot yet be answered by 535b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * applying a simple rule from the Unicode database content. Setting 545b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * up a proper standard for the behavior of UTF-8 character terminals 555b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * will require a careful analysis not only of each Unicode character, 565b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * but also of each presentation form, something the author of these 575b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * routines has avoided to do so far. 585b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 595b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * http://www.unicode.org/unicode/reports/tr11/ 605b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 615b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Markus Kuhn -- 2007-05-26 (Unicode 5.0) 625b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 635b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Permission to use, copy, modify, and distribute this software 645b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * for any purpose and without fee is hereby granted. The author 655b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * disclaims all warranties with regard to this software. 665b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 675b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c 685b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey */ 695b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 705b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey#include <wchar.h> 715b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 725b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystruct interval { 735b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int first; 745b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int last; 755b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey}; 765b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 775b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* sorted list of non-overlapping intervals of non-spacing characters */ 785b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */ 795b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic const struct interval combining[] = { 805b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 }, 815b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 }, 825b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 }, 835b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 }, 845b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED }, 855b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A }, 865b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 }, 875b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D }, 885b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 }, 895b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD }, 905b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C }, 915b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D }, 925b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC }, 935b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD }, 945b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C }, 955b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D }, 965b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 }, 975b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 }, 985b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC }, 995b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD }, 1005b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D }, 1015b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 }, 1025b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E }, 1035b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC }, 1045b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 }, 1055b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E }, 1065b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 }, 1075b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, 1085b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 }, 1095b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F }, 1105b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 }, 1115b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD }, 1125b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD }, 1135b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 }, 1145b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B }, 1155b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 }, 1165b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 }, 1175b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF }, 1185b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 }, 1195b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F }, 1205b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B }, 1215b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F }, 1225b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB }, 1235b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F }, 1245b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 }, 1255b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD }, 1265b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F }, 1275b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0xE0100, 0xE01EF } 1285b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey}; 1295b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1305b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1315b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* auxiliary function for binary search in interval table */ 1325b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic int bisearch(wchar_t ucs, const struct interval *table, int max) { 1335b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int min = 0; 1345b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int mid; 1355b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1365b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (ucs < table[0].first || ucs > table[max].last) 1375b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 0; 1385b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey while (max >= min) { 1395b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey mid = (min + max) / 2; 1405b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (ucs > table[mid].last) 1415b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey min = mid + 1; 1425b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey else if (ucs < table[mid].first) 1435b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey max = mid - 1; 1445b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey else 1455b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 1; 1465b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey } 1475b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1485b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 0; 1495b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 1505b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1515b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1525b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* The following two functions define the column width of an ISO 10646 1535b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * character as follows: 1545b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1555b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - The null character (U+0000) has a column width of 0. 1565b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1575b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - Other C0/C1 control characters and DEL will lead to a return 1585b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * value of -1. 1595b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1605b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - Non-spacing and enclosing combining characters (general 1615b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * category code Mn or Me in the Unicode database) have a 1625b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * column width of 0. 1635b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1645b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - SOFT HYPHEN (U+00AD) has a column width of 1. 1655b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1665b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - Other format characters (general category code Cf in the Unicode 1675b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * database) and ZERO WIDTH SPACE (U+200B) have a column width of 0. 1685b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1695b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF) 1705b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * have a column width of 0. 1715b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1725b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - Spacing characters in the East Asian Wide (W) or East Asian 1735b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Full-width (F) category as defined in Unicode Technical 1745b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Report #11 have a column width of 2. 1755b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1765b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * - All remaining characters (including all printable 1775b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * ISO 8859-1 and WGL4 characters, Unicode control characters, 1785b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * etc.) have a column width of 1. 1795b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * 1805b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * This implementation assumes that wchar_t characters are encoded 1815b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * in ISO 10646. 1825b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey */ 1835b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1845b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1855b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic int mk_wcwidth(wchar_t ucs) 1865b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 1875b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey /* test for 8-bit control characters */ 1885b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (ucs == 0) 1895b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 0; 1905b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0)) 1915b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return -1; 1925b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1935b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey /* binary search in table of non-spacing characters */ 1945b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (bisearch(ucs, combining, 1955b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey sizeof(combining) / sizeof(struct interval) - 1)) 1965b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 0; 1975b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 1985b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey /* if we arrive here, ucs is not a combining or C0/C1 control character */ 1995b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2005b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 1 + 2015b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0x1100 && 2025b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs <= 0x115f || /* Hangul Jamo init. consonants */ 2035b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey ucs == 0x2329 || ucs == 0x232a || 2045b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0x2e80 && ucs <= 0xa4cf && 2055b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey ucs != 0x303f) || /* CJK ... Yi */ 2065b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */ 2075b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */ 2085b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */ 2095b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */ 2105b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */ 2115b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0xffe0 && ucs <= 0xffe6) || 2125b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0x20000 && ucs <= 0x2fffd) || 2135b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey (ucs >= 0x30000 && ucs <= 0x3fffd))); 2145b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 2155b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2165b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2175b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic int mk_wcswidth(const wchar_t *pwcs, size_t n) 2185b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 2195b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int w, width = 0; 2205b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2215b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey for (;*pwcs && n-- > 0; pwcs++) 2225b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if ((w = mk_wcwidth(*pwcs)) < 0) 2235b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return -1; 2245b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey else 2255b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey width += w; 2265b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2275b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return width; 2285b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 2295b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2305b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2315b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey/* 2325b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * The following functions are the same as mk_wcwidth() and 2335b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * mk_wcswidth(), except that spacing characters in the East Asian 2345b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * Ambiguous (A) category as defined in Unicode Technical Report #11 2355b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * have a column width of 2. This variant might be useful for users of 2365b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * CJK legacy encodings who want to migrate to UCS without changing 2375b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * the traditional terminal character-width behaviour. It is not 2385b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * otherwise recommended for general use. 2395b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey */ 2405b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic int mk_wcwidth_cjk(wchar_t ucs) 2415b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 2425b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey /* sorted list of non-overlapping intervals of East Asian Ambiguous 2435b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey * characters, generated by "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */ 2445b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey static const struct interval ambiguous[] = { 2455b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 }, 2465b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00AA, 0x00AA }, { 0x00AE, 0x00AE }, { 0x00B0, 0x00B4 }, 2475b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 }, 2485b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 }, 2495b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED }, 2505b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA }, 2515b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 }, 2525b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B }, 2535b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 }, 2545b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 }, 2555b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0148, 0x014B }, { 0x014D, 0x014D }, { 0x0152, 0x0153 }, 2565b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE }, 2575b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 }, 2585b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA }, 2595b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 }, 2605b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB }, 2615b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB }, 2625b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0391, 0x03A1 }, 2635b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 }, 2645b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x0401, 0x0401 }, { 0x0410, 0x044F }, { 0x0451, 0x0451 }, 2655b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2010, 0x2010 }, { 0x2013, 0x2016 }, { 0x2018, 0x2019 }, 2665b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x201C, 0x201D }, { 0x2020, 0x2022 }, { 0x2024, 0x2027 }, 2675b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2030, 0x2030 }, { 0x2032, 0x2033 }, { 0x2035, 0x2035 }, 2685b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x203B, 0x203B }, { 0x203E, 0x203E }, { 0x2074, 0x2074 }, 2695b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC }, 2705b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 }, 2715b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2113, 0x2113 }, { 0x2116, 0x2116 }, { 0x2121, 0x2122 }, 2725b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2126, 0x2126 }, { 0x212B, 0x212B }, { 0x2153, 0x2154 }, 2735b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x215B, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 }, 2745b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2190, 0x2199 }, { 0x21B8, 0x21B9 }, { 0x21D2, 0x21D2 }, 2755b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x21D4, 0x21D4 }, { 0x21E7, 0x21E7 }, { 0x2200, 0x2200 }, 2765b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2202, 0x2203 }, { 0x2207, 0x2208 }, { 0x220B, 0x220B }, 2775b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x220F, 0x220F }, { 0x2211, 0x2211 }, { 0x2215, 0x2215 }, 2785b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x221A, 0x221A }, { 0x221D, 0x2220 }, { 0x2223, 0x2223 }, 2795b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2225, 0x2225 }, { 0x2227, 0x222C }, { 0x222E, 0x222E }, 2805b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2234, 0x2237 }, { 0x223C, 0x223D }, { 0x2248, 0x2248 }, 2815b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x224C, 0x224C }, { 0x2252, 0x2252 }, { 0x2260, 0x2261 }, 2825b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2264, 0x2267 }, { 0x226A, 0x226B }, { 0x226E, 0x226F }, 2835b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2282, 0x2283 }, { 0x2286, 0x2287 }, { 0x2295, 0x2295 }, 2845b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2299, 0x2299 }, { 0x22A5, 0x22A5 }, { 0x22BF, 0x22BF }, 2855b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2312, 0x2312 }, { 0x2460, 0x24E9 }, { 0x24EB, 0x254B }, 2865b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2550, 0x2573 }, { 0x2580, 0x258F }, { 0x2592, 0x2595 }, 2875b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x25A0, 0x25A1 }, { 0x25A3, 0x25A9 }, { 0x25B2, 0x25B3 }, 2885b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x25B6, 0x25B7 }, { 0x25BC, 0x25BD }, { 0x25C0, 0x25C1 }, 2895b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x25C6, 0x25C8 }, { 0x25CB, 0x25CB }, { 0x25CE, 0x25D1 }, 2905b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x25E2, 0x25E5 }, { 0x25EF, 0x25EF }, { 0x2605, 0x2606 }, 2915b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2609, 0x2609 }, { 0x260E, 0x260F }, { 0x2614, 0x2615 }, 2925b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x261C, 0x261C }, { 0x261E, 0x261E }, { 0x2640, 0x2640 }, 2935b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2642, 0x2642 }, { 0x2660, 0x2661 }, { 0x2663, 0x2665 }, 2945b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x2667, 0x266A }, { 0x266C, 0x266D }, { 0x266F, 0x266F }, 2955b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0x273D, 0x273D }, { 0x2776, 0x277F }, { 0xE000, 0xF8FF }, 2965b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey { 0xFFFD, 0xFFFD }, { 0xF0000, 0xFFFFD }, { 0x100000, 0x10FFFD } 2975b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey }; 2985b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 2995b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey /* binary search in table of non-spacing characters */ 3005b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if (bisearch(ucs, ambiguous, 3015b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey sizeof(ambiguous) / sizeof(struct interval) - 1)) 3025b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return 2; 3035b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3045b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return mk_wcwidth(ucs); 3055b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 3065b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3075b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3085b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeystatic int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n) 3095b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 3105b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey int w, width = 0; 3115b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3125b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey for (;*pwcs && n-- > 0; pwcs++) 3135b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey if ((w = mk_wcwidth_cjk(*pwcs)) < 0) 3145b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return -1; 3155b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey else 3165b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey width += w; 3175b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3185b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return width; 3195b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 3205b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3215b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// ################################ 3225b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey// ### The rest added by Paul Evans 3235b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3245b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeyint vterm_unicode_width(int codepoint) 3255b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 3265b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return mk_wcwidth(codepoint); 3275b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 3285b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey 3295b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkeyint vterm_unicode_is_combining(int codepoint) 3305b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey{ 3315b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey return bisearch(codepoint, combining, sizeof(combining) / sizeof(struct interval) - 1); 3325b78a3aa7741c3f44b676ccffa765cecee1cbd4cJeff Sharkey} 333