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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: master a6b5985: Avoid duplicated character classes in rx
Date: Tue, 03 Dec 2019 19:37:12 +0200
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To: Juanma Barranquero <lekktu@gmail.com>
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 (message from Juanma Barranquero on Tue, 3 Dec 2019 17:06:16 +0100)
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> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Tue, 3 Dec 2019 17:06:16 +0100
> Cc: Mattias Engdegård <mattiase@acm.org>,
>  Emacs developers <emacs-devel@gnu.org>
> 
> So you've never written
> 
> (if (setq var value) ...)
> 
> ?  ;-)

The return value of setq _is_ documented.