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feat(mbyte): support extended grapheme clusters including more emoji

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Use the grapheme break algorithm from utf8proc to support grapheme
clusters from recent unicode versions.

Handle variant selector VS16 turning some codepoints into double-width
emoji. This means we need to use ptr2cells rather than char2cells when
possible.
This commit is contained in:
bfredl
2024-08-08 10:42:08 +02:00
parent 4353996d0f
commit cfdf68a7ac
34 changed files with 657 additions and 221 deletions
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2
src/nvim/plines.h
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@@ -54,7 +54,7 @@ static inline CharSize win_charsize(CSType cstype, int vcol, char *ptr, int32_t
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_ALWAYS_INLINE
{
if (cstype == kCharsizeFast) {
return charsize_fast(csarg, vcol, chr);
return charsize_fast(csarg, ptr, vcol, chr);
} else {
return charsize_regular(csarg, ptr, vcol, chr);
}