--- /dev/null
+package pkg
+
+import "strings"
+
+func fn(s string) {
+ _ = strings.TrimLeft(s, "")
+ _ = strings.TrimLeft(s, "a")
+ _ = strings.TrimLeft(s, "ยต")
+ _ = strings.TrimLeft(s, "abc")
+ _ = strings.TrimLeft(s, "http://") // want `duplicate characters`
+}