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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/search.c
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@@ -1260,7 +1260,7 @@ int do_search(oparg_T *oap, int dirc, int search_delim, char *pat, size_t patlen
// empty for the search_stat feature.
if (!cmd_silent) {
msgbuf[0] = (char)dirc;
if (utf_iscomposing(utf_ptr2char(p))) {
if (utf_iscomposing_first(utf_ptr2char(p))) {
// Use a space to draw the composing char on.
msgbuf[1] = ' ';
memmove(msgbuf + 2, p, plen);