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fix(highlight): allow globals to be cleared

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- and reduce heap allocations

Fixes #17420
This commit is contained in:
Lewis Russell
2022-02-15 23:40:06 +00:00
parent 238b944e58
commit 876aaf2003
3 changed files with 44 additions and 14 deletions
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26
src/nvim/syntax.c
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@@ -6758,16 +6758,26 @@ void set_hl_group(int id, HlAttrs attrs, Dict(highlight) *dict, int link_id)
{ NULL, -1, NIL },
};
char hex_name[8];
char *name;
for (int j = 0; cattrs[j].dest; j++) {
if (cattrs[j].val != -1) {
if (cattrs[j].val < 0) {
XFREE_CLEAR(*cattrs[j].dest);
continue;
}
if (cattrs[j].name.type == kObjectTypeString && cattrs[j].name.data.string.size) {
name = cattrs[j].name.data.string.data;
} else {
snprintf(hex_name, sizeof(hex_name), "#%06x", cattrs[j].val);
name = hex_name;
}
if (!*cattrs[j].dest
|| STRCMP(*cattrs[j].dest, name) != 0) {
xfree(*cattrs[j].dest);
if (cattrs[j].name.type == kObjectTypeString && cattrs[j].name.data.string.size) {
*cattrs[j].dest = xstrdup(cattrs[j].name.data.string.data);
} else {
char hex_name[8];
snprintf(hex_name, sizeof(hex_name), "#%06x", cattrs[j].val);
*cattrs[j].dest = xstrdup(hex_name);
}
*cattrs[j].dest = xstrdup(name);
}
}