From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Pascal Bourguignon Newsgroups: gmane.emacs.help Subject: Re: Another regex problem Date: Tue, 25 Oct 2005 23:47:11 +0200 Organization: Informatimago Message-ID: <87d5ltz2u8.fsf@thalassa.informatimago.com> References: NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1130277345 5143 80.91.229.2 (25 Oct 2005 21:55:45 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 25 Oct 2005 21:55:45 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Oct 25 23:55:37 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1EUWj6-0003Oi-Oz for geh-help-gnu-emacs@m.gmane.org; Tue, 25 Oct 2005 23:53:01 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1EUWj6-0000tN-6h for geh-help-gnu-emacs@m.gmane.org; Tue, 25 Oct 2005 17:53:00 -0400 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.icl.net!newsfeed.fjserv.net!news-lond.gip.net!news.gsl.net!gip.net!easynet-quince!easynet.net!easynet-post2!not-for-mail Original-Newsgroups: gnu.emacs.help Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) Cancel-Lock: sha1:+JIcVK7okcKfSeYvbA8dyPHUD0k= Original-Lines: 44 Original-NNTP-Posting-Host: 62.93.174.79 Original-X-Trace: DXC=S9XNba76k;64KEf=3R5Zf=SiHWb3f14:3bBd4DjF1d]1 Original-Xref: shelby.stanford.edu gnu.emacs.help:134977 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:30566 Archived-At: exits funnel writes: > Hello, > > I've bumped into another problem which I'd like to use > query-replace-regexp to fix if possible. Not I've got > a bunch of these: > > t_foo_Grape_Banana > t_foo_Pear > t_foo_Apple > > which I'd like to replace with > t_foo_grape_banana > t_foo_pear > t_foo_apple > > In other words I'd like to make them uniformly lower > case but I can't figure out how to accomplish this in > the replacement string. Is it possible? Thanks in > advance. If you must downcase only part of the substitution, I don't know other ways than to write some emacs lisp, or awk. Something like: (while (re-search-forward regexp nil t) (let ((p1 (match-string 1)) (p2 (match-string 2)) ... (pn (match-string n))) (delete-region (match-beginning) (match-end)) (insert (format "...%s...%s...%s..." p1 (downcase p2) ... pn)))) Anyways, if you like to process flex/bison (or lex/yacc) files like this, it may be a good idea not to make it a one-shoot affair, but to keep the transformation in a script or a Makefile. In general when I use flex/bison, I've got a number of pre and post processing of the sources in Makefile, with sed & awk. For more sophisticated transformations, emacs could be used (in batch mode ;-). -- "A TRUE Klingon warrior does not comment his code!"