GNU bug report logs - #29165
26.0.90; can't use some code byte-compiled under emacs 24

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Package: emacs;

Reported by: Ken Raeburn <raeburn <at> permabit.com>

Date: Mon, 6 Nov 2017 06:58:02 UTC

Severity: normal

Tags: fixed, patch

Found in versions 26.1, 26.0.90

Fixed in version 27.1

Done: Noam Postavsky <npostavs <at> gmail.com>

Bug is archived. No further changes may be made.

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Noam Postavsky <npostavs <at> users.sourceforge.net>
Cc: Ken Raeburn <raeburn <at> permabit.com>, 29165 <at> debbugs.gnu.org, Philipp Stephani <p.stephani2 <at> gmail.com>, Andreas Schwab <schwab <at> linux-m68k.org>
Subject: bug#29165: 26.0.90; can't use some code byte-compiled under emacs 24
Date: Thu, 14 Dec 2017 22:04:15 -0500

> I don't see the use case for empty &aux, but I don't mind reverting that
> change.

It's typically when you define a function from within a macro so you may
have something like

   `(...
     (cl-defun ,foo (,@args &aux ,@auxargs)
       ,@body)
     ...)

where `auxargs` can have any length including 0.  It's not
terribly hard to strip the &aux when `auxargs` is empty, but it's
convenient to be able to use the above form without having to worry
about a possibly empty `auxargs`.


        Stefan
This bug report was last modified 7 years and 137 days ago.

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