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-rw-r--r--src/nvim/option.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/nvim/option.c b/src/nvim/option.c
index ae4e7c1fda..df90fadc97 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -1915,6 +1915,9 @@ bool parse_winhl_opt(win_T *wp)
char *commap = xstrchrnul(hi, ',');
size_t len = (size_t)(commap - hi);
int hl_id = len ? syn_check_group(hi, len) : -1;
+ if (hl_id == 0) {
+ return false;
+ }
int hl_id_link = nlen ? syn_check_group(p, nlen) : 0;
HlAttrs attrs = HLATTRS_INIT;