From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Errors indicated by ineffective backslashes in string literals Date: Sat, 16 Mar 2019 14:25:22 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="255080"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Mar 16 19:39:19 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1h5EDG-0014E2-Vv for ged-emacs-devel@m.gmane.org; Sat, 16 Mar 2019 19:39:19 +0100 Original-Received: from localhost ([127.0.0.1]:44979 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h5EDF-0006Jm-VO for ged-emacs-devel@m.gmane.org; Sat, 16 Mar 2019 14:39:18 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:49523) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h5EC4-0006Fl-GC for emacs-devel@gnu.org; Sat, 16 Mar 2019 14:38:05 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h5Dzw-0001z0-2k for emacs-devel@gnu.org; Sat, 16 Mar 2019 14:25:32 -0400 Original-Received: from [195.159.176.226] (port=33612 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h5Dzv-0001xJ-PP for emacs-devel@gnu.org; Sat, 16 Mar 2019 14:25:32 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1h5Dzq-000p3Q-Ri for emacs-devel@gnu.org; Sat, 16 Mar 2019 19:25:26 +0100 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:GgPyKfBtfUkfJIL3yyj65AnDzj8= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:234237 Archived-At: > Sorry to bother you again, but while trying to get a better understanding of > regexp usage and errors I found several ineffective backslashes in string > literals (like "\.") and decided to do something about them. I went through something similar "recently" and added the corresponding highlighting in elisp-mode (see elisp--font-lock-backslash in lisp-mode.el). > - (directory-files-recursively store-dir "\.gpg$")))) > + (directory-files-recursively store-dir "\\.gpg$")))) ^ should be \\' [ Yes, I know it's unrelated, but it's another common (minor) error. ] > - (if file (replace-regexp-in-string "\.pdf$" ".ps" file) > + (if file (replace-regexp-in-string "\\.pdf$" ".ps" file) ^ Here's another ;-) Stefan