From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced Date: Tue, 11 Aug 2020 19:52:12 -0700 Message-ID: References: <87ftmpapnu.fsf@mouse.gnus.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="12117"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Mohammed Sadik , 23298@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Aug 12 04:53:15 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 1k5gt9-00033B-DE for geb-bug-gnu-emacs@m.gmane-mx.org; 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Tue, 11 Aug 2020 19:52:13 -0700 (PDT) Original-Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Tue, 11 Aug 2020 19:52:12 -0700 In-Reply-To: <87ftmpapnu.fsf@mouse.gnus.org> (Lars Ingebrigtsen's message of "Sun, 28 Jul 2019 22:07:49 +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:184733 Archived-At: Lars Ingebrigtsen writes: > Mohammed Sadik writes: > >> When pressing Backspace key, with electric-pair-mode enabled, >> it unconditionally deletes the following char, if its the matching pair. >> Ideally, it may better check if it breaks the equilibrium of >> braces/quotes. >> >> Eg: code: (char-before (point)) >> |_ point location >> If my point (cursor) is just before the last paren (the cursor is >> blinking on the last paren), and I press backspace until the beginning >> of "point"[0], and then one char back[1], it just deletes the bracket, >> without checking if the parens are balanced. >> >> code: >> [0] (char-before () >> |_point location >> [1] (char-before >> |_ point location >> >> This could be the case of quotes, braces, etc. > > (I'm going through old Emacs bug reports that haven't received any > response.) > > Or a simpler example: > > (foo () > > If you put point after the next-to-last character, then hitting DEL will > delete the last pair: > > (foo > > But... I don't think this is a bug? electric-pair-mode doesn't promise > to keep things balanced globally, but delete the matching pair if you > delete an opening parenthesis? I think. > > Does that tally with what everybody else would expect? Do we have any electric-pair-mode users who could comment on this? Best regards, Stefan Kangas