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#16771: 24.3.50; pcase generates irritating warnings Date: Sun, 16 Feb 2014 21:32:58 +0100 Message-ID: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1392582857 22423 80.91.229.3 (16 Feb 2014 20:34:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 16 Feb 2014 20:34:17 +0000 (UTC) To: 16771@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Feb 16 21:34:23 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WF8Pt-00058I-Ve for geb-bug-gnu-emacs@m.gmane.org; Sun, 16 Feb 2014 21:34:22 +0100 Original-Received: from localhost ([::1]:34930 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WF8Pt-0003WC-HD for geb-bug-gnu-emacs@m.gmane.org; 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X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:85688 Archived-At: Compiling this example: ;; -*-lexical-binding:t-*- (eval-when-compile (require 'pcase)) (defun foo (x) (pcase x ((and `(,sym) (guard (symbolp sym))) t))) with emacs -batch -f batch-byte-compile foo.el produces this output: In toplevel form: foo.el:5:1:Warning: Unused lexical variable `sym' Wrote /tmp/foo.elc This warning is annoying as sym is obviously used in the guard expression and replacing sym with _sym also doesn't help because that produces foo.el:5:1:Warning: variable `_sym' not left unused In GNU Emacs 24.3.50.6 (i686-pc-linux-gnu, GTK+ Version 2.24.10) of 2014-02-14 on ix