bug#16752: 24.3.50; pp-to-string deactivates mark

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: eller.helmut@gmail.com,  16752@debbugs.gnu.org
> Date: Sun, 16 Feb 2014 22:11:33 -0500
> 
> > My suggestion would free implementors of pp-to-string etc. from doing
> > that in every place where they use temporary buffers, which is a very
> > frequent paradigm in Emacs.
> 
> But it'll break code like
> 
>    (let ((buf (current-buffer)))
>      (with-temp-buffer
>        ...
>        (with-current-buffer buf
>          (insert "toto"))
>        ...))

And that is a problem because..?