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Re: `save-excursion' defeated by `set-buffer'

From: Roland Winkler
Subject: Re: `save-excursion' defeated by `set-buffer'
Date: Thu, 24 Dec 2009 08:04:55 -0600

On Mon Dec 21 2009 Stefan Monnier wrote:
> save-excursion only saves point in the current buffer, so
>    (save-excursion (set-buffer foo) (goto-char (point-min)))
> will move point in foo and the point-saving done by save-excursion is
> useless.  So either you want to use
>    (save-current-buffer (set-buffer foo) (goto-char (point-min)))
> aka
>    (with-current-buffer foo (goto-char (point-min)))
> if moving point in foo is what you wanted, or
>    (with-current-buffer foo (save-excursion (goto-char (point-min))))
> if you didn't want to move point in foo.

Hi Stefan,

Thanks for the clarification! -- I still believe it would be good if
this was mentioned in the elisp manual as the compiler warning by
itself is somewhat cryptic for non-experts.


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