Created attachment 64791 [details]
stacktrace

Fixed.

http://hg.netbeans.org/main/rev/bf637c88ffc3

The root problem is the fact that we misuse javax.swing.Action for things which are some kind of GUI controls but for
which actionPerformed makes no sense - classes which are just placeholders for a Presenter.* or ContextAwareAction
implementation. This is an API flaw which manifests itself in other ways, e.g. the fact that you can apparently make a
keybinding for something which cannot possibly be invoked in this way. Since we cannot retrofit javax.swing.Action with
a superinterface giving just display name information, is there some other solution? For example,

  setValue(SomeNBAPI.PHONY_ACTION, true);

to mark an "action" as not really being an action, so that GUI such as Quick Search would not even offer it as a
directly invocable object? Or perhaps a special runtime exception so that you could write

public boolean isEnabled() {throw new PhonyActionException(this);}
public void actionPerformed(ActionEvent ev) {throw new PhonyActionException(this);}

(neatly providing a readable body for these methods, rather than using asserts), where Quick Search etc. would know to
check for PAE?

Integrated into 'main-golden', available in build *200808280201* on http://bits.netbeans.org/dev/nightly/
Changeset: http://hg.netbeans.org/main/rev/bf637c88ffc3
User: Milan Kubec <mkubec@netbeans.org>
Log: #140443: beep instead of assertion error when invoking action that is not to be invoked