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Re: Emacs snapshot: free variable warning

From: Dmitry Gutov
Subject: Re: Emacs snapshot: free variable warning
Date: Fri, 23 Nov 2012 17:37:43 +0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (windows-nt)

Joost Kremers <> writes:

> Hi all,
> After a recent Emacs update (I'm following Damien Cassou's Emacs
> snapshot packages at <>) one
> of my init files started giving me a free variable warning that I never
> got before:
> ```
> .emacs.d/mu4e-settings.el:Warning: reference to free variable
>     `offlineimap-buffer-name'
> ```
> The warning results from a defadvice:
> ```
> (defadvice mu4e-quit (around jk-quit-offlineimap () activate)
>   "Quit OfflineIMAP when quitting mu4e."
>   (interactive)
>   ad-do-it
>   (signal-process (get-buffer-process (get-buffer offlineimap-buffer-name)) 
> 'SIGUSR2))
> ```
> If I comment out this defadvice, the warning goes away.
> Anyone know why I'm suddenly getting this warning? It's true that the
> variable hasn't been defined yet when the code is loaded, but I have a
> defun in the same file which also references this variable but doesn't
> produce any warning. Besides, I'm used to getting warnings like this
> when compiling code, but not when it's simply loaded...
> If it is intentional (and not some bug introduced with a recent change
> to Emacs) is there a way to code the defadvice so that I don't get the
> warning?

Same here with autopair on Emacs trunk, compiled by myself:

.emacs.d/elpa/autopair-20121120.2012/autopair.elc:Warning: reference to free
    variable `autopair-mode'

in *Compile-Log* on startup.

Doesn't look like expected behavior.

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