From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Helmut Eller Newsgroups: gmane.emacs.bugs Subject: bug#8711: 24.0.50; binding _ to unused values with lexical-binding Date: Tue, 24 May 2011 08:01:44 +0200 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1306216991 23507 80.91.229.12 (24 May 2011 06:03:11 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 24 May 2011 06:03:11 +0000 (UTC) To: 8711@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue May 24 08:03:08 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1QOkhv-0004fP-Nz for geb-bug-gnu-emacs@m.gmane.org; Tue, 24 May 2011 08:03:07 +0200 Original-Received: from localhost ([::1]:46538 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QOkhv-0003ZC-7i for geb-bug-gnu-emacs@m.gmane.org; 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Tue, 24 May 2011 02:02:31 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QOkhK-0002rf-8h for bug-gnu-emacs@gnu.org; Tue, 24 May 2011 02:02:30 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:51527) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QOkhK-0002rb-0n for bug-gnu-emacs@gnu.org; Tue, 24 May 2011 02:02:30 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1QOkh5-00044Q-FB for bug-gnu-emacs@gnu.org; Tue, 24 May 2011 08:02:15 +0200 Original-Received: from 212.46.168.133 ([212.46.168.133]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 24 May 2011 08:02:15 +0200 Original-Received: from eller.helmut by 212.46.168.133 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 24 May 2011 08:02:15 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 18 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: 212.46.168.133 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) Cancel-Lock: sha1:krK+O6jgjHCpts6pXn+asBCxtB8= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Tue, 24 May 2011 02:03:02 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:46674 Archived-At: * Stefan Monnier [2011-05-24 00:56] writes: >>> It can insert (ignore nil) instead which should have the same effect but >>> without triggering the other warning with lexical-binding. > >> Indeed. But I quickly run into another case where that doesn't help: > >> (defun foo (x) (destructuring-bind (y &rest _) x y)) > > I don't see any warning for this code. What warning do you get? ;; -*- lexical-binding: t -*- (defun foo (x) (destructuring-bind (y &rest _) x y)) x.el:2:1:Warning: variable `_' not left unused Helmut