In many versions of Emacs the sexp below
(save-window-excursion (shell) (buffer-name (current-buffer)))
returns "*shell*", but in some recent versions it returns the name of
the current buffer instead.
Let me be more precise. I ran the sexp below in the versions of Emacs
that I have in my machine,
(list emacs-version
(save-window-excursion (shell) (buffer-name (current-buffer)))
)
and collected the outputs, and got:
("24.5.1" "*shell*")
("25.1.1" "*shell*")
("26.3" "*shell*")
("27.0.50" "TODO")
Here's the exact version of my "27.0.50". The output of
PAGER=cat git log -1 --format=format:"%H%n%cd%n"
was:
01ea96b5548a80e6aabc69428439113ce0a8c17e
Mon Oct 14 08:47:02 2019 +0200
I don't know (yet) how to bisect versions to find exactly when the
behavior changed, sorry... btw, this is a Debian box (on amd64).
Cheers,
Eduardo Ochs
http://angg.twu.net/#eev