GNU bug report logs - #8711
24.0.50; binding _ to unused values with lexical-binding

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Package: emacs;

Reported by: Helmut Eller <eller.helmut <at> gmail.com>

Date: Sat, 21 May 2011 18:45:02 UTC

Severity: minor

Found in versions 24.0.50, 26.0.50

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

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From: Helmut Eller <eller.helmut <at> gmail.com>
To: 8711 <at> debbugs.gnu.org
Subject: bug#8711: 24.0.50; binding _ to unused values with lexical-binding
Date: Sat, 21 May 2011 20:44:18 +0200

There seems be no way to avoid a warning in code like this:

;; -*- lexical-binding: t -*-
(eval-when-compile (require 'cl))
(defun foo (x) (destructuring-bind (_) x))
(defun bar (x) (destructuring-bind (_) x (ignore _)))

In foo the compiler complains because _ is never used and
it bar it complains because it is used.


In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
 of 2011-05-21 on ix
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
configured using `configure  '--with-gif=no' '--with-gnutls=no''
This bug report was last modified 3 years and 10 days ago.

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