bug#16097: [PATCH] Treat windows on other spaces as not visible in Cocoa

[Robert Pluim]

>>>>> On Thu, 27 Jan 2022 21:59:44 +0800, Po Lu <luangruo@yahoo.com> said:

    Po> Robert Pluim <rpluim@gmail.com> writes:
    >> Please let's apply this. Please. Pretty please. Pretty please with sugar 
on
    >> top. Please.

    Po> It breaks the fix for bug#53276 and probably the GNUstep build as well.

So it does (and my patch contains an unrelated hunk, I probably
applied to an unclean tree).

    Po> I don't use macOS and have no opinion about the feature in general, but
    Po> before applying it please give me a heads up, so I can fix bug#53276
    Po> again afterwards.

It makes macOS consistent with other platforms. Anything that can
improve macOS' atrocious window handling is welcome.

We can try to retain the fix for 53276. Iʼd appreciate a hint :-)

Robert
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