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From: Glenn Morris <rgm@gnu.org>
Newsgroups: gmane.emacs.devel,gmane.emacs.gnus.general
Subject: Re: Problems with `require' in recent changes
Date: Mon, 17 Dec 2007 13:44:02 -0500
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Archived-At: <http://permalink.gmane.org/gmane.emacs.gnus.general/65980>

Glenn Morris wrote:

> (or
>  (condition-case nil
>      (require 'password-cache)
>    (file-error nil))
>  (require 'password))

Or even shorter:

(if (locate-library "password-cache")
    (require 'password-cache)
  (require 'password))