From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Nick Dokos Newsgroups: gmane.emacs.help Subject: Re: Regex to match lines with a specific number of words Date: Tue, 26 Apr 2022 19:55:51 -0400 Message-ID: <87tuafl7qw.fsf@alphaville.usersys.redhat.com> References: <87czh7ttzt.fsf@fastmail.fm> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31142"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:/lemf3bd73vKRWiFowdz/R+GhJg= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Apr 27 01:56:46 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1njV2y-0007w3-CR for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 27 Apr 2022 01:56:44 +0200 Original-Received: from localhost ([::1]:40462 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1njV2x-0005fT-9s for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 26 Apr 2022 19:56:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56938) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1njV2M-0005fH-GH for help-gnu-emacs@gnu.org; Tue, 26 Apr 2022 19:56:06 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:40980) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1njV2L-000070-6p for help-gnu-emacs@gnu.org; Tue, 26 Apr 2022 19:56:06 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1njV2H-0006z7-Lz for help-gnu-emacs@gnu.org; Wed, 27 Apr 2022 01:56:01 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 5 X-Spam_score: 0.5 X-Spam_bar: / X-Spam_report: (0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:137039 Archived-At: Joost Kremers writes: > I've been trying to come up with a regex that will match any line containing at > least 30 words in order to kill them from the buffer (preferably with > `kill-matching-lines`, because I need to move the lines to another buffer.) > > ... > > Passing this to `flush-lines` simply deletes everything in the buffer starting > at point, telling me it "[d]eleted 1 matching line", even though (many) more > lines were deleted. Adding ^ and $ around the regex didn't have any effect. > Do you have to do it in emacs? Why not use `awk'? It could be as simple as awk 'NF < 30 {print;}' and saving the other lines to a different file is not much more difficult: awk 'NF < 5 {print;} NF >= 5 { print > "long-stuff.txt"}' -- Nick "There are only two hard problems in computer science: cache invalidation, naming things, and off-by-one errors." -Martin Fowler