From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#55205: 28.1.50; completion--replace illegally mutates completion candidates Date: Sun, 01 May 2022 15:17:10 +0300 Message-ID: <835ymp78hl.fsf@gnu.org> References: <4d1b8687-20f2-137a-2739-7bba28828991@daniel-mendler.de> <87wnf5mpt4.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23049"; mail-complaints-to="usenet@ciao.gmane.io" Cc: mail@daniel-mendler.de, monnier@iro.umontreal.ca, 55205@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun May 01 14:18:12 2022 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 1nl8Wg-0005lH-Tz for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=2761 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nl8Vb-0008Vn-UO; Sun, 01 May 2022 08:17:04 -0400 In-Reply-To: <87wnf5mpt4.fsf@gnus.org> (message from Lars Ingebrigtsen on Sun, 01 May 2022 13:53:59 +0200) 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:231133 Archived-At: > Resent-From: Lars Ingebrigtsen > Original-Sender: "Debbugs-submit" > Resent-CC: bug-gnu-emacs@gnu.org > Resent-Sender: help-debbugs@gnu.org > From: Lars Ingebrigtsen > Date: Sun, 01 May 2022 13:53:59 +0200 > Cc: Stefan Monnier , 55205@debbugs.gnu.org > > Daniel Mendler writes: > > > The function completion--replace mutates the replacement string, it > > strips the text properties. > > I don't think that's, strictly speaking, illegal. :-) > > Anyway, I agree that it's unfortunate that completion destructively > modifies the strings it's handed, and this has been discussed > extensively over the years (and there's probably several bug reports > open about that, although I can't find them now). > > I don't remember why we're doing that, but I seem to vaguely recall that > there's a reason... Anybody? I don't understand how can completion work in general without destructively modifying strings. Isn't that obvious?