Steps:
1). go to Erlang tracing control panel –> Functions tab
2). click “New pattern”
3). click Match spec column and click the button “...”
4). In the shown dialog, input a literal fun like fun([X]) when is_integer(X), X > 1, X < 10 -> true end.
5). Click cancel button
6). the fun is still shown in Match spec column

For 6), the expected action should be no any thing is shown in match spec column