From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.devel Subject: Re: [acm@muc.de: Re: Emacs 22.2 release plans - request for a slight delay.] Date: Sun, 16 Mar 2008 19:36:33 +0000 Message-ID: <20080316193633.GC1544@muc.de> References: <20080307072737.GA1334@muc.de> <47DD2A9C.70008@gmx.at> NNTP-Posting-Host: dough.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1205695415 14487 80.91.229.10 (16 Mar 2008 19:23:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 16 Mar 2008 19:23:35 +0000 (UTC) Cc: Stefan Monnier , emacs-devel@gnu.org To: martin rudalics Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Mar 16 20:39:31 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by dough.gmane.org with esmtp (Exim 4.50) id 1JayhT-0001x9-3u for ged-emacs-devel@m.gmane.org; Sun, 16 Mar 2008 20:39:19 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JayRv-00088d-HW for ged-emacs-devel@m.gmane.org; Sun, 16 Mar 2008 15:23:15 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JayQp-0007kL-0V for emacs-devel@gnu.org; Sun, 16 Mar 2008 15:22:07 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JayQn-0007jU-HB for emacs-devel@gnu.org; Sun, 16 Mar 2008 15:22:06 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JayQn-0007jI-5E for emacs-devel@gnu.org; Sun, 16 Mar 2008 15:22:05 -0400 Original-Received: from colin.muc.de ([193.149.48.1] helo=mail.muc.de) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1JayQm-0006DR-Mf for emacs-devel@gnu.org; Sun, 16 Mar 2008 15:22:05 -0400 Original-Received: (qmail 50062 invoked by uid 3782); 16 Mar 2008 19:22:02 -0000 Original-Received: from acm.muc.de (p57AF5659.dip.t-dialin.net [87.175.86.89]) by colin2.muc.de (tmda-ofmipd) with ESMTP; Sun, 16 Mar 2008 20:22:00 +0100 Original-Received: (qmail 7245 invoked by uid 1000); 16 Mar 2008 19:36:33 -0000 Content-Disposition: inline In-Reply-To: <47DD2A9C.70008@gmx.at> User-Agent: Mutt/1.5.9i X-Delivery-Agent: TMDA/1.1.5 (Fettercairn) X-Primary-Address: acm@muc.de X-detected-kernel: by monty-python.gnu.org: FreeBSD 4.6-4.9 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:92767 Archived-At: Hi, Martin! On Sun, Mar 16, 2008 at 03:11:40PM +0100, martin rudalics wrote: > >In fact, here's a provisional patch! C-M-a seems to run fast enough with > >it, even in .../src/lisp.h. > Still takes more than three seconds here while parsing the entire buffer > happens instantaneously. Hey, when will you guys stop complaining? ;-) For me (1.2 Ghz Athlon) C-M-a from EOB in .../src/lisp.h take ~1.5 seconds. Previously, it was about 30 seconds. That's an order of magnitude speed up. The problem is that it is impossible to decide without an unbounded search whether int foo [50] ; (char *) bar ; occurring at the outermost nesting level of a file.c is declaring global variables or is a k&r region declaring function parameters. I'd welcome suggestions as to how to speed it up, though. I can't see much alternative to what I've done (put a limit on 20 paren/bracket pairs in a k&r region) unless I put in a "column 0 heuristic", something I'd realy rather not do. -- Alan Mackenzie (Nuremberg, Germany).