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

[martin rudalics]

+(defvar window-delete-frame-functions nil
+  "A list of functions to handle the frame deletion.

I'd still prefer a tab-bar specific option (like 'tab-bar-save-frame-p'
as mentioned earlier) for two reasons.

The first reason is that 'window--delete' is an internal function of
window.el.  I wouldn't want an internal function run a hook "of its own"
because that's difficult to explain to users.  OTOH I suppose that a
function like 'tab-bar-save-frame-p' should be callable from any other
function too, as soon as the need arises.

The second reason is that I wouldn't want "anyone" to inhibit frame
deletion.  Such a facility could have consequences I cannot fathom at
the moment.  Would we want 'delete-frame' to obey it too and possibly
spare the frame?

Let's see what Haji-Ali thinks.

martin