bug#19120: 25.0.50; macosx: f10 does NOT go to the menu bar

[Robert Pluim]

>>>>> On Wed, 20 Oct 2021 10:59:45 +0800, Po Lu via "Bug reports for GNU Emacs, 
>>>>> the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org> said:

    reports> "Jan D." <jan.h.d@swipnet.se> writes:
    >> He fakes a keyclick on the apple menu.  Not that hard to do, patches 
welcome.

    reports> I think I may have found a cleaner solution to this.  But there is 
one
    reports> problem: only the code for GNUstep utilizing [NSMenu display] has 
been
    reports> tested.

    reports> I don't know if the Cocoa-specific code will work.  Sam, please 
test the
    reports> attached change, thanks.

    reports> Alan, how does this look to you?  Do you think it will work?

It doesnʼt crash, and performActionForItemAtIndex is called, but it
doesnʼt actually cause anything to happen (on macOS).

Robert
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