From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.bugs Subject: bug#12867: 24.3.50; easy-to-repro crash involving mode line Date: Tue, 13 Nov 2012 09:22:20 +0100 Message-ID: <50A2033C.6070504@gmx.at> References: <77CAAFE4D0CE4DD98476C996E3158648@us.oracle.com> <83obj2x218.fsf@gnu.org> <50A13289.4050301@gmx.at> <83bof2wup6.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1352795022 4612 80.91.229.3 (13 Nov 2012 08:23:42 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 Nov 2012 08:23:42 +0000 (UTC) Cc: 12867@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Nov 13 09:23:52 2012 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 1TYBmh-0007ZL-UO for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Nov 2012 09:23:52 +0100 Original-Received: from localhost ([::1]:60202 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TYBmX-00088N-LH for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Nov 2012 03:23:41 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:36392) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TYBmT-000879-03 for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2012 03:23:40 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TYBmP-0004ef-UA for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2012 03:23:36 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:55305) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TYBmP-0004ea-QZ for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2012 03:23:33 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1TYBms-0006Hg-7e for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2012 03:24:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: martin rudalics Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 13 Nov 2012 08:24:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 12867 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 12867-submit@debbugs.gnu.org id=B12867.135279498624075 (code B ref 12867); Tue, 13 Nov 2012 08:24:02 +0000 Original-Received: (at 12867) by debbugs.gnu.org; 13 Nov 2012 08:23:06 +0000 Original-Received: from localhost ([127.0.0.1]:37320 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1TYBly-0006GG-3m for submit@debbugs.gnu.org; Tue, 13 Nov 2012 03:23:06 -0500 Original-Received: from mailout-de.gmx.net ([213.165.64.23]:47152) by debbugs.gnu.org with smtp (Exim 4.72) (envelope-from ) id 1TYBlv-0006G6-G1 for 12867@debbugs.gnu.org; Tue, 13 Nov 2012 03:23:04 -0500 Original-Received: (qmail invoked by alias); 13 Nov 2012 08:22:33 -0000 Original-Received: from 62-47-35-120.adsl.highway.telekom.at (EHLO [62.47.35.120]) [62.47.35.120] by mail.gmx.net (mp031) with SMTP; 13 Nov 2012 09:22:33 +0100 X-Authenticated: #14592706 X-Provags-ID: V01U2FsdGVkX1+f7hlXfBafvgW3yP7CKXevf37dqjU7WbRFpLWX2S 8iYw6hm2LHcJBh In-Reply-To: X-Y-GMX-Trusted: 0 X-Spam-Score: 0.8 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-Spam-Score: 0.8 (/) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.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:66852 Archived-At: > FWIW, I recently added such a cache (in Elisp) to nlinum.el, and on my > test case (largish file with C-v/M-v style scrolling) the difference was > very significant (but the previous code had no cache at all, not even > base_line_pos). So we now already have a syntax-ppss cache and a nlinum cache. Couldn't we maintain one cache per buffer, updated by one and the same algorithm? That algorithm would parse syntax when requested, for example, by font-locking. Newlines would be always parsed. Cache invalidation would happen as present. martin