Subject: Re: bug#13630: 24.3.50; [REGRESSION] [Gnus] `mail-source-check-pop' uselessly called by `mail-source-start-idle-timer'

From: Katsumi Yamaoka <[email-masked]>
Date: Thu, 07 Feb 2013 09:30:45 +0900

Luca Capello wrote:
> Since the upgrade to emacs-snapshot_2:20130122-1, I got the same error
> about `mail-source-check-pop', still present in 2:20130130-1:

> 1) when starting Gnus

> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
[...]
>   pop3-open-server(nil nil)
[...]
> My .emacs* does not contain any reference to POP and:
>   (setq mail-sources '())

I guess you have set some `display-time' variable so as to run
`mail-source-check-pop' intentionally or not intentionally.
What's the value of `display-time-mail-function'?  The default
is nil.  Otherwise, doesn't `display-time-string-forms' contain
a form that runs `mail-source-check-pop'?