From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#37488: 27.0.50; Inconsistent naming of arg of `text-property-search-forward' and `-backward' Date: Wed, 25 Sep 2019 15:15:58 +0200 Message-ID: <87lfucv7n5.fsf@gnus.org> References: <87y2yfo8fv.fsf@web.de> <834l10oj0n.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="171830"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: michael_heerdegen@web.de, Juanma Barranquero , 37488@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Sep 25 15:26:50 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iD7Jh-000iVB-MY for geb-bug-gnu-emacs@m.gmane.org; Wed, 25 Sep 2019 15:26:49 +0200 Original-Received: from localhost ([::1]:50062 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iD7Jf-0000Xn-G8 for geb-bug-gnu-emacs@m.gmane.org; Wed, 25 Sep 2019 09:26:47 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:33219) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iD7AF-0006WA-FH for bug-gnu-emacs@gnu.org; Wed, 25 Sep 2019 09:17:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iD7AE-0005wC-7Q for bug-gnu-emacs@gnu.org; Wed, 25 Sep 2019 09:17:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:60453) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iD7AE-0005w3-4T for bug-gnu-emacs@gnu.org; Wed, 25 Sep 2019 09:17:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1iD7AD-0003QH-UJ for bug-gnu-emacs@gnu.org; Wed, 25 Sep 2019 09:17:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 25 Sep 2019 13:17:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 37488 X-GNU-PR-Package: emacs Original-Received: via spool by 37488-submit@debbugs.gnu.org id=B37488.156941736613071 (code B ref 37488); Wed, 25 Sep 2019 13:17:01 +0000 Original-Received: (at 37488) by debbugs.gnu.org; 25 Sep 2019 13:16:06 +0000 Original-Received: from localhost ([127.0.0.1]:41038 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iD79J-0003Ok-1A for submit@debbugs.gnu.org; Wed, 25 Sep 2019 09:16:05 -0400 Original-Received: from quimby.gnus.org ([80.91.231.51]:34520) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iD79H-0003OT-IA for 37488@debbugs.gnu.org; Wed, 25 Sep 2019 09:16:03 -0400 Original-Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=marnie) by quimby.gnus.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iD79D-0002qR-Bx; Wed, 25 Sep 2019 15:16:01 +0200 In-Reply-To: <834l10oj0n.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 25 Sep 2019 11:52:08 +0300") 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: 209.51.188.43 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:167158 Archived-At: Eli Zaretskii writes: > . The original doc string said about nil as PREDICATE: > > `nil' means almost the same as \"not equal\", but will also > end the match if the value of PROPERTY changes. > > What does it mean to "end the match if the value changes"? The > text went on to say "See the manual for extensive examples", but > the manual doesn't mention this aspect of nil, it just says "not > equal". If point is inside a region where PROPERTY has a non-nil value, using nil as the predicate will end the search when PROPERTY changes value. > . The doc string stated: > > If NOT-CURRENT, if the match is under point, it will not be > returned, but instead the next instance is returned, if any. > > But the code, AFAIU, just checks whether the value of PROPERTY at > point matches that of the found region, which doesn't necessarily > mean point is part of the region, it could just mean there are two > regions with matching values of PROPERTY, and point belongs to one > of them. Right? I'm not sure I understand the question... What it's meant to do is basically how TAB works in buttons, which is a common use case. If you're looking for "o", and point is where "|" is below, then it'll find the last "oo" section after the x-es: oo|oxxxxxoo > . What is the reason for having VALUE an optional argument? Is it a > frequent/useful operation to look for a VALUE of nil? If PREDICATE is nil, then having to use an explicit nil VALUE isn't necessary. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no