GNU bug report logs - #15326
24.3; Incorrect "variable not left unused" in destructuring cl-loop

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Package: emacs;

Reported by: Christopher Wellons <wellons <at> nullprogram.com>

Date: Tue, 10 Sep 2013 18:27:01 UTC

Severity: minor

Found in version 24.3

Done: Stefan Monnier <monnier <at> iro.umontreal.ca>

Bug is archived. No further changes may be made.

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Message #8 received at 15326 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
To: Christopher Wellons <wellons <at> nullprogram.com>
Cc: 15326 <at> debbugs.gnu.org
Subject: Re: bug#15326: 24.3;
 Incorrect "variable not left unused" in destructuring cl-loop
Date: Tue, 10 Sep 2013 17:05:52 -0400

> In the macro expansion, the _ is declared in a `let', then later set
> with `setq', "using" it.

A `setq' does not *use* a variable.  It just sets it, affecting
later uses.  If there's no later uses, the setq is just a no-op.

Fixing this will require someone to dig into the `cl-loop' macro.


        Stefan "who suspects it's not really fixed in
                destructuring-bind either"
This bug report was last modified 11 years and 241 days ago.

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