From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: How to grep for a string spanning multiple lines? Date: Sun, 27 Nov 2022 20:04:50 +0100 Message-ID: <8735a4fcbx.fsf@dataswamp.org> References: <8735a6cj2k.fsf@mbork.pl> <87y1rxix4e.fsf@dataswamp.org> <871qpodgzn.fsf@mbork.pl> <87edtoh5iz.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12158"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:TlmXpmdlnwG7M+QyE8gNWmAFsfs= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Nov 27 22:43:29 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 1ozPQu-0002zf-Uu for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 27 Nov 2022 22:43:28 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ozPQg-0004Z4-IJ; Sun, 27 Nov 2022 16:43:14 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ozMxd-0004iG-P8 for help-gnu-emacs@gnu.org; Sun, 27 Nov 2022 14:05:06 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ozMxa-0006mm-H5 for help-gnu-emacs@gnu.org; Sun, 27 Nov 2022 14:05:03 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1ozMxV-0001uj-4J for help-gnu-emacs@gnu.org; Sun, 27 Nov 2022 20:04:57 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never 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: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Sun, 27 Nov 2022 16:43:11 -0500 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:141203 Archived-At: tomas wrote: >> It can be done with regular expressions of course, but ... >> I wonder if it isn't better to have some "inexact" search >> algorithm [...] > >> Because the advantage would then also be that even the >> words wouldn't have to be exact! >> >> Interesting, I'd like that myself very much! >> >> Do we have that? > > You might enjoy agrep, then. If you want to go further, do > some research on weighted Levenshtein distance (there /is/ > an elisp function named `string-distance` for you, then). > > Beyond that, you are firmly in "information retrieval" land, > with its diverse and colourful landscape :-) > > https://en.wikipedia.org/wiki/Information_retrieval Okay, so agrep, weighted Levenshtein distance, `string-distance' and information retrieval ... There is an endless world to rediscover :) Thanks, get back to you, maybe. -- underground experts united https://dataswamp.org/~incal