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authorbfredl <bjorn.linse@gmail.com>2024-08-08 10:42:08 +0200
committerbfredl <bjorn.linse@gmail.com>2024-08-30 11:49:09 +0200
commitcfdf68a7acde16597fbd896674af68c42361102c (patch)
tree6113193fda7a7c0f94577a464e39964e74311583 /src/nvim/normal.c
parent4353996d0fa8e5872a334d68196d8088391960cf (diff)
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feat(mbyte): support extended grapheme clusters including more emoji
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.
Diffstat (limited to 'src/nvim/normal.c')
-rw-r--r--src/nvim/normal.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/nvim/normal.c b/src/nvim/normal.c
index f44a64af21..f3bdea9a85 100644
--- a/src/nvim/normal.c
+++ b/src/nvim/normal.c
@@ -837,7 +837,10 @@ static void normal_get_additional_char(NormalState *s)
while ((s->c = vpeekc()) > 0
&& (s->c >= 0x100 || MB_BYTE2LEN(vpeekc()) > 1)) {
s->c = plain_vgetc();
- if (!utf_iscomposing(s->c)) {
+ // TODO(bfredl): only allowing up to two composing chars is cringe af.
+ // Could reuse/abuse schar_T to at least allow us to input anything we are able
+ // to display and use the stateful utf8proc algorithm like utf_composinglike
+ if (!utf_iscomposing_legacy(s->c)) {
vungetc(s->c); // it wasn't, put it back
break;
} else if (s->ca.ncharC1 == 0) {