Fix parse error of actions with arguments

src/options.go

@@ -1131,7 +1131,7 @@ func parseKeymap(keymap map[tui.Event][]*action, str string, exit func(string))
 
 func isExecuteAction(str string) actionType {
 	matches := executeRegexp.FindAllStringSubmatch(":"+str, -1)
-	if matches == nil || len(matches) != 1 {
+	if matches == nil || len(matches) != 1 || len(matches[0][0]) != len(str)+1 {
 		return actIgnore
 	}
 	prefix := matches[0][1]

src/options_test.go

@@ -489,3 +489,13 @@ func TestParseSingleActionList(t *testing.T) {
 		t.Errorf("Invalid action parsed: %v", actions[3])
 	}
 }
+
+func TestParseSingleActionListError(t *testing.T) {
+	err := ""
+	parseSingleActionList("change-query(foobar)baz", func(e string) {
+		err = e
+	})
+	if len(err) == 0 {
+		t.Errorf("Failed to detect error")
+	}
+}