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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/api/ui.c
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@@ -847,7 +847,7 @@ void remote_ui_raw_line(RemoteUI *ui, Integer grid, Integer row, Integer startco
char sc_buf[MAX_SCHAR_SIZE];
schar_get(sc_buf, chunk[i]);
remote_ui_put(ui, sc_buf);
if (utf_ambiguous_width(utf_ptr2char(sc_buf))) {
if (utf_ambiguous_width(sc_buf)) {
ui->client_col = -1; // force cursor update
}
}