From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: "Basil L. Contovounesios" Newsgroups: gmane.emacs.bugs Subject: bug#32328: match-beginning: return nil if search failed Date: Wed, 01 Aug 2018 17:39:46 +0300 Message-ID: <878t5qqhfx.fsf@tcd.ie> References: <99197071-caa7-c187-2df7-32c8366a07ad@easy-emacs.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1533134298 31355 195.159.176.226 (1 Aug 2018 14:38:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 1 Aug 2018 14:38:18 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: 32328@debbugs.gnu.org To: Andreas =?UTF-8?Q?R=C3=B6hler?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Aug 01 16:38:13 2018 Return-path: Envelope-to: geb-bug-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 1fksGT-0007xo-2c for geb-bug-gnu-emacs@m.gmane.org; Wed, 01 Aug 2018 16:38:13 +0200 Original-Received: from localhost ([::1]:41490 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fksIU-0005Qp-Kj for geb-bug-gnu-emacs@m.gmane.org; Wed, 01 Aug 2018 10:40:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47494) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fksII-0005Qe-Ge for bug-gnu-emacs@gnu.org; Wed, 01 Aug 2018 10:40:12 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fksIE-0001c4-GK for bug-gnu-emacs@gnu.org; Wed, 01 Aug 2018 10:40:06 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:32851) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fksIE-0001b5-AC for bug-gnu-emacs@gnu.org; Wed, 01 Aug 2018 10:40:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1fksID-0006to-Jc for bug-gnu-emacs@gnu.org; Wed, 01 Aug 2018 10:40:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: "Basil L. Contovounesios" Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 01 Aug 2018 14:40:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 32328 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 32328-submit@debbugs.gnu.org id=B32328.153313439826505 (code B ref 32328); Wed, 01 Aug 2018 14:40:01 +0000 Original-Received: (at 32328) by debbugs.gnu.org; 1 Aug 2018 14:39:58 +0000 Original-Received: from localhost ([127.0.0.1]:37869 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fksIA-0006tR-0K for submit@debbugs.gnu.org; Wed, 01 Aug 2018 10:39:58 -0400 Original-Received: from mail-ed1-f54.google.com ([209.85.208.54]:42205) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fksI7-0006tE-Jt for 32328@debbugs.gnu.org; Wed, 01 Aug 2018 10:39:56 -0400 Original-Received: by mail-ed1-f54.google.com with SMTP id r4-v6so6688196edp.9 for <32328@debbugs.gnu.org>; Wed, 01 Aug 2018 07:39:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tcd-ie.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-transfer-encoding; bh=/ZKtq8yVC7JbNMGkq9UDJlZZuUWqsrbnNz0LtnOPFwM=; b=zEKxBDoCjiHXMYc1r+KO0+R9w5lcZXeurr2wypGCzkj30zzIirREhhbMW7tK7ziDZ6 CHe+tv5KN3kvaWSLIqrZRbKd7nQSnAPY1BnOJrP6JYscOrCH4fg+PLluNkikZxTd9mfM 0NCjZXD8sjyta/DvQAfLV09qr/uZ8p4pDNpI9XfjMpH4bwtLIRnGvKlBfX5Y8S9zB7Bu stASKDFHQ3LBgmWNK70YUFfMzbJMAf75H0RKTojwr9str9nA6kY939l1xU9xJ9KeIS7x SGQ79vNTXLPpIeBbGAxyUOJtCS7di/Fp888mi+MWxKNGltp/UrmLa/oHnqxUCo1TZxxI vjSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version:content-transfer-encoding; bh=/ZKtq8yVC7JbNMGkq9UDJlZZuUWqsrbnNz0LtnOPFwM=; b=loPnPE43EA+kpsfO78pksB+nudePTqiCXcHn2CGF+9YQws8u1V2RofrSVUpZ7rrbjy Q+WG0K39DaRyvQCSyZBqj8FSvJ426K5ZGK+HCLMeVaf2pQCyUZgnxAl5JmEVGYMpFIGr ujgks780SKbQkReroUUKgzoXCQP1FS2yoSALIn2r2K9MIDs+wMc80nsxGGmRDkltVAeh 9Uwp8U10FoJ/63yVZqsV6xnCXRt0JUJeFlshxht6UUcfjsNZ2LBLElAPpdGCqYLbUuZ6 bXckClLojypnsS+I52HLb/Kv6ytg7dZtKUPH84/0wAJcQWysBGdmTFv72HSaM3D4+dI5 2HOA== X-Gm-Message-State: AOUpUlGPmJ7UBCyHqaeUT5rkTF6423p53nSuo+fNSoho8TUKvlA+WC0g 6p1Yvv2nzE8TtdHsnlzFe2lA9A== X-Google-Smtp-Source: AAOMgpf/3C+ClQSMJd+Q0hVRtZdbsXjPPOOvUApHU6LiAoHhM9ncKBNR+daxmaQojcMnGDa+xEU6cA== X-Received: by 2002:a50:98c1:: with SMTP id j59-v6mr4270983edb.212.1533134389909; Wed, 01 Aug 2018 07:39:49 -0700 (PDT) Original-Received: from localhost ([213.233.149.3]) by smtp.gmail.com with ESMTPSA id b41-v6sm8152961eda.38.2018.08.01.07.39.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 01 Aug 2018 07:39:49 -0700 (PDT) In-Reply-To: <99197071-caa7-c187-2df7-32c8366a07ad@easy-emacs.de> ("Andreas =?UTF-8?Q?R=C3=B6hler?="'s message of "Tue, 31 Jul 2018 07:59:06 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:149174 Archived-At: Andreas R=C3=B6hler writes: > match-beginning tells: Return value is undefined if the last search faile= d. > > Consider it a gain if it returns nil when failing. I think match-string already implicitly relies on the suggested behaviour; compare its docstring: Value is nil if NUMth pair didn't match, or there were less than NUM pair= s. with its implementation: (if (match-beginning num) (if string (substring string (match-beginning num) (match-end num)) (buffer-substring (match-beginning num) (match-end num)))) --=20 Basil