bug#71386: 29.1; Frame is auto-deleted even when it has multiple tabs

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

 > This patch just copies the logic of frame handling to tab handling.
 > There is no customization for frame handling,

There is: 'auto-hide-function'.

 > so there is
 > no customization for tab handling.

But we want to customize the new behavior whether to retain a frame
because it has outstanding tabs or not.

 > In window-deletable-p there is hard-coded 'frame-root-window-p'
 > that checks if the frame has only 1 window.  So the patch
 > does the same by checking if there is only 1 tab on the frame.
 >
 > Also in window--delete the call of 'tab-bar-close-tab'
 > corresponds to the call 'delete-frame'.

And if a user wants to auto-hide the frame?

martin