bug#59862: quit-restore per window buffer

[martin rudalics via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

 > I've tested your previous changes for a long time,
 > and everything works nicely.  I hope your new patch is even
 > better.  However, since it grew to an unmanageable size,
 > I will test it only after you will push it.

Pushed now.  Lets hope for the best.  Please consider closing Bug#59862.
It has become unmanageable for me as well.

 >> +*** New hook 'window-deletable-functions'.
 >> +This abnormal hook gives its client a way to save a window from getting
 >> +deleted implicitly by functions like 'kill-buffer', 'bury-buffer' and
 >> +'quit-restore-window',
 >
 > Maybe this hook is needed for bug#71386, but I have no plans
 > to use it for tab handling.

Actually, this is the opposite of ...

 >> +*** New option 'quit-restore-window-no-switch'.
 >> +With this option set, 'quit-restore-window' will delete its window more
 >> +aggressively rather than switching to some other buffer in it.
 >
 > This option looks useful for some cases.

... that.  So people may decide which of them suits their needs better.

martin