Re: C-l while in menu?

[Richard Stallman]

I can see one more thing you can try: keep a list of LWLIB_ID values
for which popup_activate_callback gets called, and remove them from
the list when popup_deactivate_callback gets called for them.  If
popup_deactivate_callback gets called for something that is not
active, just ignore it.  The menu is active when the list is nonempty.

This ought to work, as long as every meny gets activated
and later deactivated.