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From: Michael Albinus <michael.albinus@gmx.de>
Newsgroups: gmane.emacs.help
Subject: Re: cleaning up a big regexp
Date: Mon, 15 Sep 2014 16:11:10 +0200
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> (mapconcat `regexp-quote my-gnus-bulk-from-address-list "\\|"))
>
> A.k.a (regexp-opt my-gnus-bulk-from-address-list)

Not when the strings contain meta characters like "*". I repeat it again
and again, because I've entered this trap very recently. See commit
trunk r117880, where I refuse to tell that I have been an idiot.

> -- Stefan

Best regards, Michael.