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Fix incorrect handling of Korean Hangul Jamo characters. GitHub issue

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4546 from Roy Jung.
This commit is contained in:
nicm
2025-07-22 07:42:52 +00:00
parent 6549aaf393
commit 206f492401
3 changed files with 161 additions and 8 deletions
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26
screen-write.c
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@ -2038,17 +2038,27 @@ screen_write_combine(struct screen_write_ctx *ctx, const struct grid_cell *gc)
return (zero_width);
/*
* Check if we need to combine characters. This could be zero width
* (set above), a modifier character (with an existing Unicode
* character) or a previous ZWJ.
* Check if we need to combine characters. This could be a Korean
* Hangul Jamo character, zero width (set above), a modifier character
* (with an existing Unicode character) or a previous ZWJ.
*/
if (!zero_width) {
if (utf8_is_modifier(ud)) {
if (last.data.size < 2)
return (0);
force_wide = 1;
} else if (!utf8_has_zwj(&last.data))
switch (hanguljamo_check_state(&last.data, ud)) {
case HANGULJAMO_STATE_NOT_COMPOSABLE:
return (1);
case HANGULJAMO_STATE_CHOSEONG:
return (0);
case HANGULJAMO_STATE_COMPOSABLE:
break;
case HANGULJAMO_STATE_NOT_HANGULJAMO:
if (utf8_is_modifier(ud)) {
if (last.data.size < 2)
return (0);
force_wide = 1;
} else if (!utf8_has_zwj(&last.data))
return (0);
break;
}
}
/* Check if this combined character would be too long. */