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Re: problems with save-excursion


From: Stefan Monnier
Subject: Re: problems with save-excursion
Date: Sat, 11 Mar 2006 12:19:11 -0500
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux)

> (defun copy-line ()
>   (interactive)
>   (save-excursion
>     (let (beg)
>       (beginning-of-line)
>       (setq beg (point))
>       (end-of-line)
>       (copy-region-as-kill beg (point)))))

It's a good habit to initialize your variables directly when you declare
them (in C-style languages as well, BTW):

 (defun copy-line ()
   (interactive)
   (save-excursion
     (beginning-of-line)
     (let ((beg (point)))
       (end-of-line)
       (copy-region-as-kill beg (point)))))

In elisp it's also marginally more efficient.


        Stefan


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