From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.bugs Subject: bug#40216: 28.0.50; Misinformation in isearch char-fold Date: Thu, 26 Mar 2020 10:28:55 +0100 Message-ID: References: <87y2rppddp.fsf@mail.linkov.net> <87imiskzc6.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="41086"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 40216@debbugs.gnu.org To: Juri Linkov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Mar 26 10:30:14 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 1jHOq6-000AZE-I3 for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 26 Mar 2020 10:30:14 +0100 Original-Received: from localhost ([::1]:48416 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jHOq5-0001e5-Hr for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 26 Mar 2020 02:28:58 -0700 (PDT) In-Reply-To: <87imiskzc6.fsf@mail.linkov.net> (Juri Linkov's message of "Wed, 25 Mar 2020 22:29:29 +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: 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:177739 Archived-At: >>>>> On Wed, 25 Mar 2020 22:29:29 +0200, Juri Linkov said: >> Out of curiosity, what were you searching for that resulted in such a >> large regexp? Juri> Sometimes I pull a few of lines (usually 1-3 lines, not more) Juri> from the buffer into the search string to confirm that the same lines Juri> exist in more places in the same buffer ignoring the differences defined Juri> by folding rules. But after pulling 2 lines into the search string, Juri> the generated regexp becomes so long that the regexp search fails Juri> with the error "Regular expression too big". Currently it silently Juri> switches to literal search without notification that it doesn't follow Juri> the folding rules anymore. With the patch it informs about switching Juri> to literal search. Ah, I hadn't considered that use case. Do we need an option to char-fold-regexp that says 'only apply char-folding to non-ascii characters'? That would reduce the size of the regexp considerably. Robert