From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Newsgroups: gmane.emacs.bugs Subject: bug#41006: 26.3; regular expressions documentation Date: Tue, 5 May 2020 19:12:50 +0200 Message-ID: <6F7830C9-FED5-4CE4-AAA3-45BFA0638F58@acm.org> References: <64E29F93-5A92-4F8D-9BA2-C6F14AEC2F64@acm.org> Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.14\)) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="69251"; mail-complaints-to="usenet@ciao.gmane.io" Cc: jan , Stefan Kangas , 41006@debbugs.gnu.org To: Richard Stallman Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue May 05 19:13:09 2020 Return-path: Envelope-to: geb-bug-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 1jW181-000HwV-9v for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 05 May 2020 19:13:09 +0200 Original-Received: from localhost ([::1]:48802 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jW180-0005j4-71 for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 05 May 2020 13:13:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39028) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jW17u-0005im-MO for bug-gnu-emacs@gnu.org; Tue, 05 May 2020 13:13:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:53941) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jW17u-000638-Da for bug-gnu-emacs@gnu.org; Tue, 05 May 2020 13:13:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jW17u-0005Pg-8c for bug-gnu-emacs@gnu.org; Tue, 05 May 2020 13:13:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 05 May 2020 17:13:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41006 X-GNU-PR-Package: emacs Original-Received: via spool by 41006-submit@debbugs.gnu.org id=B41006.158869877920799 (code B ref 41006); Tue, 05 May 2020 17:13:02 +0000 Original-Received: (at 41006) by debbugs.gnu.org; 5 May 2020 17:12:59 +0000 Original-Received: from localhost ([127.0.0.1]:37254 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jW17r-0005PO-L2 for submit@debbugs.gnu.org; Tue, 05 May 2020 13:12:59 -0400 Original-Received: from mail238c50.megamailservers.eu ([91.136.10.248]:43604 helo=mail56c50.megamailservers.eu) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jW17o-0005PD-6w for 41006@debbugs.gnu.org; Tue, 05 May 2020 13:12:57 -0400 X-Authenticated-User: mattiase@bredband.net DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megamailservers.eu; s=maildub; t=1588698774; bh=SthaW4BJQcLmw/96GvwUQB46oOEllApE8VLh3+fYEnM=; h=Subject:From:In-Reply-To:Date:Cc:References:To:From; b=YxSQu2tR7ZE2N5QJxNb3YtfOZyKygAAdyWP8G/h6Cmz5cEhXcvKLuFkdaKFnHVEde 04w+FSpB87Zn7Lg+Jwi6UjVGg3znVDPRQyCNvzL872khxtPMDHhgJk3IxgJO2QSo0c DkghA8TW96odzZhJumfWJcTgFTav2y/9OJoWDjAQ= Feedback-ID: mattiase@acm.or Original-Received: from stanniol.lan (c-4e4ae655.032-75-73746f71.bbcust.telenor.se [85.230.74.78]) (authenticated bits=0) by mail56c50.megamailservers.eu (8.14.9/8.13.1) with ESMTP id 045HCo2u006605; Tue, 5 May 2020 17:12:52 +0000 In-Reply-To: X-Mailer: Apple Mail (2.3445.104.14) X-CTCH-RefID: str=0001.0A782F23.5EB19E4D.009A, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 X-CSC: 0 X-CHA: v=2.3 cv=UqsdyN4B c=1 sm=1 tr=0 a=klNLuyVZdLUgl+K5Uafb2A==:117 a=klNLuyVZdLUgl+K5Uafb2A==:17 a=kj9zAlcOel0A:10 a=M51BFTxLslgA:10 a=mDV3o1hIAAAA:8 a=cw1dDr3RA_JPMcSBKfQA:9 a=CjuIK1q_8ugA:10 a=_FVE-zBwftR9WsbkzFJk:22 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:179745 Archived-At: 4 maj 2020 kl. 05.10 skrev Richard Stallman : > Would you like to propose an ordering and classification by function? Start with the lexical details: special chars, escaping, literals. Then something like this: * concatenation and alternative * repetition: * + ? etc * bracketing: \(?: ... \) * single-character expressions: [...] '.' \cX etc * zero-width assertions: ^ $ \< etc * capture groups and backrefs Aim for all in a single node, using subheadings as appropriate, as this = is what the user probably wants to see. Use subnodes for some in-depth = information such as named character classes. As Stefan pointed out, a section comparing the syntax with that of other = regexp implementations likely seen by the user would be very welcome. It = would permit the reader to make use of existing knowledge while reducing = mistakes coming from incorrect assumptions.