Re: 23.1: Is delete-windows-on supposed to change the current buffer?

[Stefan Monnier <monnier@iro.umontreal.ca>]

> `delete-windows-on' deletes all windows showing `mh-show-buffer'.  If,
> for example, `mh-show-buffer' is shown in the selected window and that
> window is the only window on its frame, and that frame is the only
> frame, another buffer is shown in that window and becomes the current
> buffer.  window_loop handles this as

> 		    if (EQ (window, selected_window))
> 		      Fset_buffer (w->buffer);

> unchanged since the past release.

My guess is that the switch from Fdisplay_buffer to the Elisp version of
code, causes the windows to be created slightly differently, and this in
turn causes delete-windows-on in this particular case to cycle through
the windows in a different order.
In any case, the answer is that delete-windows-on should be expected to
change the current-buffer, so if you want it to stay unchanged, you need
save-excursion.


        Stefan