@@ -828,15 +828,21 @@
 static OF_INLINE bool
 of_ascii_isalpha(char c)
 {
 	return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
 }
+
+static OF_INLINE bool
+of_ascii_isdigit(char c)
+{
+	return (c >= '0' && c <= '9');
+}
 
 static OF_INLINE bool
 of_ascii_isalnum(char c)
 {
-	return (of_ascii_isalpha(c) || (c >= '0' && c <= '9'));
+	return (of_ascii_isalpha(c) || of_ascii_isdigit(c));
 }
 
 static OF_INLINE bool
 of_ascii_isspace(char c)
 {