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From: Uday Reddy <uDOTsDOTreddy@cs.bham.ac.uk>
Newsgroups: gmane.emacs.help
Subject: Re: `save-excursion' defeated by `set-buffer'
Date: Wed, 02 Mar 2011 20:54:34 +0000
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On 3/2/2011 5:12 PM, Andreas Röhler wrote:
>
> Hi,
>
> `byte-compile-file' sends a warning
>
> `save-excursion' defeated by `set-buffer'
>
> with resp. to such a form
>
> (save-excursion
> (set-buffer blub)
> ...
> )

If you change `save-excursion' to `save-current-buffer', the warning 
will go away.  Whether that is the right thing to do or not depends on 
your code.

Cheers,
Uday