Check MB_CUR_MAX in UTF-8 functions

Borrowed from OpenBSD.
mptre · Oct 4, 2016 · 860b931 · 860b931
1 parent 7c30d66
commit 860b931
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/pick.c b/src/pick.c
@@ -848,11 +848,11 @@ delete_between(char *string, size_t length, size_t start, size_t end)
 int
 isu8cont(unsigned char c)
 {
-	return (c & (0x80 | 0x40)) == 0x80;
+	return MB_CUR_MAX > 1 && (c & (0x80 | 0x40)) == 0x80;
 }
 
 int
 isu8start(unsigned char c)
 {
-	return (c & (0x80 | 0x40)) == (0x80 | 0x40);
+	return MB_CUR_MAX > 1 && (c & (0x80 | 0x40)) == (0x80 | 0x40);
 }