From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: Re: What is the use of "categories"? Date: Mon, 27 Aug 2018 20:29:44 +0200 Message-ID: <87ftyzfysn.fsf@mbork.pl> References: <877ekdmyfw.fsf@mbork.pl> <83zhx95hnj.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1535395174 7735 195.159.176.226 (27 Aug 2018 18:39:34 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 27 Aug 2018 18:39:34 +0000 (UTC) User-Agent: mu4e 1.1.0; emacs 27.0.50 Cc: help-gnu-emacs@gnu.org To: Eli Zaretskii Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Aug 27 20:39:30 2018 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fuMQE-0001tL-0d for geh-help-gnu-emacs@m.gmane.org; Mon, 27 Aug 2018 20:39:30 +0200 Original-Received: from localhost ([::1]:34661 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fuMSK-0008Nm-BC for geh-help-gnu-emacs@m.gmane.org; Mon, 27 Aug 2018 14:41:40 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56637) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fuMRN-0008Fv-BR for help-gnu-emacs@gnu.org; Mon, 27 Aug 2018 14:40:46 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fuMHm-0006oo-GJ for help-gnu-emacs@gnu.org; Mon, 27 Aug 2018 14:30:47 -0400 Original-Received: from mail.mojserwer.eu ([195.110.48.8]:55570) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fuMHi-0006mU-QJ; Mon, 27 Aug 2018 14:30:43 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id 2914FE6714; Mon, 27 Aug 2018 20:30:39 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mail.mojserwer.eu Original-Received: from mail.mojserwer.eu ([127.0.0.1]) by localhost (mail.mojserwer.eu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ha9Mp1z5HyO0; Mon, 27 Aug 2018 20:30:36 +0200 (CEST) Original-Received: from localhost (static-dwadziewiec-jedenpiec7.echostar.pl [109.232.29.157]) by mail.mojserwer.eu (Postfix) with ESMTPSA id B513FE6559; Mon, 27 Aug 2018 20:30:35 +0200 (CEST) In-reply-to: <83zhx95hnj.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.110.48.8 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:117775 Archived-At: On 2018-08-26, at 16:25, Eli Zaretskii wrote: >> From: Marcin Borkowski >> Date: Sun, 26 Aug 2018 08:30:59 +0200 >> >> I found out about "categories" today - see (info "(elisp) Categories"). >> What is the use of them? I noticed that filling functions use them >> (which makes sense), is there anything else in stock Emacs or packages >> that does? > > You can use categories in regular expressions, via the \c escape. > This could allow you, for example, to find Katakana characters, or > characters that are consonants. Thanks! -- Marcin Borkowski http://mbork.pl