FcLangSetIndex() indicates "not found" with a non-negative return value.
Return value 0 doesn't imply "not found", it rather means "language
found at index 0 in fcLangCharSets".
---
src/fclang.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/fclang.c b/src/fclang.c
index 19f3ddd..dbbe721 100644
--- a/src/fclang.c
+++ b/src/fclang.c
@@ -732,7 +732,7 @@ FcLangSetPromote (const FcChar8 *lang, FcValuePromotionBuffer *vbuf)
if (lang)
{
id = FcLangSetIndex (lang);
- if (id > 0)
+ if (id >= 0)
{
FcLangSetBitSet (&buf->ls, id);
}
--
2.11.0
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