From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.bugs Subject: bug#20629: 25.0.50; Regression: TAGS broken, can't find anything in C++ files. Date: Fri, 29 May 2015 23:33:58 +0300 Message-ID: <5568CD36.2030703@yandex.ru> References: <555EC552.5010600@swipnet.se> <83bnh7z8c5.fsf@gnu.org> <5564C2C7.5050909@yandex.ru> <837frvywfn.fsf@gnu.org> <55650812.60909@yandex.ru> <831ti2yu1a.fsf@gnu.org> <5565E28A.5040507@yandex.ru> <83wpzuxbtd.fsf@gnu.org> <5565E8AB.5020107@yandex.ru> <83r3q2xa3q.fsf@gnu.org> <5566583F.7020503@yandex.ru> <83h9qxxvo4.fsf@gnu.org> <5566EC49.8010907@yandex.ru> <837frsycly.fsf@gnu.org> <5567351E.7020006@yandex.ru> <83zj4owthp.fsf@gnu.org> <5567AE52.1000600@yandex.ru> <83fv6fx0nk.fsf@gnu.org> <55687241.5030200@yandex.ru> <55689E02.5040605@yandex.ru> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1432931726 8291 80.91.229.3 (29 May 2015 20:35:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 29 May 2015 20:35:26 +0000 (UTC) Cc: 20629@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri May 29 22:35:15 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YyQzp-000638-8L for geb-bug-gnu-emacs@m.gmane.org; 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Fri, 29 May 2015 13:34:00 -0700 (PDT) Original-Received: from [192.168.1.2] ([82.102.93.54]) by mx.google.com with ESMTPSA id q4sm9860837wja.24.2015.05.29.13.33.59 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 29 May 2015 13:34:00 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0 In-Reply-To: X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:103332 Archived-At: On 05/29/2015 10:19 PM, Stefan Monnier wrote: > Oh, then it's a non-starter (unless the search can be sped up). I've posted the numbers along with the two versions of the patch: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20629#101 http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20629#107 Someone else might have better luck, but it seems to me that dramatically improving the performance there would have to involve work on the regexp engine and/or the Elisp interpreter. Byte-compiling the new etags.el, as I measured later, improves the worst-case time of the second patch from 3s to 1.9s. No effect on the runtimes of the first patch (still 0.7s per any completion).