GNU bug report logs - #16882
24.3.50; with-temp-buffer-window broken

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From: martin rudalics <rudalics <at> gmx.at>
To: Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
Cc: 16882 <at> debbugs.gnu.org
Subject: bug#16882: 24.3.50; with-temp-buffer-window broken
Date: Fri, 28 Feb 2014 11:59:24 +0100

> Just a note on this: (Sorry to insist)
>
> You expect here the code of 'body' returns a stream like prin* function
> family does, but IMHO 'body' should be any code that is self
> contained in the "temp-buffer-window" and not elsewhere.
> IOW the actual version is not safe in this sens because it may affect
> the current-buffer.
> I suspect already existing code is affected by this new behavior.
>
> Try:
>
> (with-temp-buffer-window "foo" nil nil (princ "hello"))
>
> and now
>
> (with-temp-buffer-window "foo" nil nil (insert "hello"))
>
> I expect here "hello" to be inserted in "foo" buffer, but actually it
> corrupt current-buffer.

As the bug found by Juanma shows I was fooled by this myself.  It should
now behave again in your sense.  I still have to explain the behavior in
the manual.

Thanks, martin

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