vt: presentation selectors may be anywhere in the cluster

This commit is contained in:
Daniel Eklöf 2021-06-15 07:25:38 +02:00
parent 96ff29bbd3
commit 09431dd15c
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GPG key ID: 5BBD4992C116573F

18
vt.c
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@ -726,20 +726,22 @@ action_utf8_print(struct terminal *term, wchar_t wc)
struct composed new_cc;
new_cc.count = wanted_count;
new_cc.chars[0] = base;
for (size_t i = 1; i < wanted_count - 1; i++)
new_cc.chars[i] = composed->chars[i];
new_cc.chars[wanted_count - 1] = wc;
if (term->composed_count < CELL_COMB_CHARS_HI) {
/* TODO: grapheme cluster width */
int grapheme_width = wcswidth(new_cc.chars, new_cc.count);
#if 0 /* Fish expects this, but nothing else */
if (new_cc.chars[new_cc.count - 1] == 0xfe0f) {
/* Emoji selector */
grapheme_width = max(2, grapheme_width);
int grapheme_width = wcwidth(base);
int min_grapheme_width = 0;
for (size_t i = 0; i < wanted_count; i++) {
wchar_t c = new_cc.chars[i];
if (c == 0xfe0f)
min_grapheme_width = 2;
grapheme_width += wcwidth(c);
}
#endif
new_cc.width = grapheme_width;
new_cc.width = max(grapheme_width, min_grapheme_width);
term->composed_count++;
term->composed = xrealloc(term->composed, term->composed_count * sizeof(term->composed[0]));