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Handle regional indicators and emoji modifiers in a better way, GitHub

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issue 3998.
This commit is contained in:
nicm
2025-11-01 16:44:24 +00:00
parent 8cb2805eb7
commit d90b414223
4 changed files with 117 additions and 68 deletions
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124
utf8-combined.c
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@@ -73,49 +73,99 @@ utf8_is_vs(const struct utf8_data *ud)
return (memcmp(ud->data, "\357\270\217", 3) == 0);
}
/* Is this in the modifier table? */
/* Should these two characters combine? */
int
utf8_is_modifier(const struct utf8_data *ud)
utf8_should_combine(const struct utf8_data *with, const struct utf8_data *add)
{
wchar_t wc;
wchar_t w, a;
if (utf8_towc(ud, &wc) != UTF8_DONE)
if (utf8_towc(with, &w) != UTF8_DONE)
return (0);
switch (wc) {
case 0x1F1E6:
case 0x1F1E7:
case 0x1F1E8:
case 0x1F1E9:
case 0x1F1EA:
case 0x1F1EB:
case 0x1F1EC:
case 0x1F1ED:
case 0x1F1EE:
case 0x1F1EF:
case 0x1F1F0:
case 0x1F1F1:
case 0x1F1F2:
case 0x1F1F3:
case 0x1F1F4:
case 0x1F1F5:
case 0x1F1F6:
case 0x1F1F7:
case 0x1F1F8:
case 0x1F1F9:
case 0x1F1FA:
case 0x1F1FB:
case 0x1F1FC:
case 0x1F1FD:
case 0x1F1FE:
case 0x1F1FF:
case 0x1F3FB:
case 0x1F3FC:
case 0x1F3FD:
case 0x1F3FE:
case 0x1F3FF:
if (utf8_towc(add, &a) != UTF8_DONE)
return (0);
/* Regional indicators. */
if ((a >= 0x1F1E6 && a <= 0x1F1FF) && (w >= 0x1F1E6 && w <= 0x1F1FF))
return (1);
/* Emoji skin tone modifiers. */
switch (a) {
case 0x1F44B:
case 0x1F44C:
case 0x1F44D:
case 0x1F44E:
case 0x1F44F:
case 0x1F450:
case 0x1F466:
case 0x1F467:
case 0x1F468:
case 0x1F469:
case 0x1F46E:
case 0x1F470:
case 0x1F471:
case 0x1F472:
case 0x1F473:
case 0x1F474:
case 0x1F475:
case 0x1F476:
case 0x1F477:
case 0x1F478:
case 0x1F47C:
case 0x1F481:
case 0x1F482:
case 0x1F485:
case 0x1F486:
case 0x1F487:
case 0x1F4AA:
case 0x1F575:
case 0x1F57A:
case 0x1F590:
case 0x1F595:
case 0x1F596:
case 0x1F645:
case 0x1F646:
case 0x1F647:
case 0x1F64B:
case 0x1F64C:
case 0x1F64D:
case 0x1F64E:
case 0x1F64F:
case 0x1F6B4:
case 0x1F6B5:
case 0x1F6B6:
case 0x1F926:
case 0x1F937:
case 0x1F938:
case 0x1F939:
case 0x1F93D:
case 0x1F93E:
case 0x1F9B5:
case 0x1F9B6:
case 0x1F9B8:
case 0x1F9B9:
case 0x1F9CD:
case 0x1F9CE:
case 0x1F9CF:
case 0x1F9D1:
case 0x1F9D2:
case 0x1F9D3:
case 0x1F9D4:
case 0x1F9D5:
case 0x1F9D6:
case 0x1F9D7:
case 0x1F9D8:
case 0x1F9D9:
case 0x1F9DA:
case 0x1F9DB:
case 0x1F9DC:
case 0x1F9DD:
case 0x1F9DE:
case 0x1F9DF:
if (w >= 0x1F3FB && w <= 0x1F3FF)
return (1);
break;
}
return (0);
return 0;
}
static enum hanguljamo_subclass