From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Thorsten Jolitz Newsgroups: gmane.emacs.devel Subject: Re: Emacs Lisp's future Date: Thu, 18 Sep 2014 09:54:03 +0200 Message-ID: <874mw5uzxg.fsf@gmail.com> References: <87wq97i78i.fsf@earlgrey.lan> <87sijqxzr2.fsf@newcastle.ac.uk> <87egvaxshd.fsf@newcastle.ac.uk> <83k3522ulo.fsf@gnu.org> <871traxoy7.fsf@newcastle.ac.uk> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1411027049 8694 80.91.229.3 (18 Sep 2014 07:57:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 18 Sep 2014 07:57:29 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Sep 18 09:57:22 2014 Return-path: Envelope-to: ged-emacs-devel@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 1XUWad-0003bk-8Z for ged-emacs-devel@m.gmane.org; Thu, 18 Sep 2014 09:57:19 +0200 Original-Received: from localhost ([::1]:49011 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUWac-0004PI-VO for ged-emacs-devel@m.gmane.org; Thu, 18 Sep 2014 03:57:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59793) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUWXt-0000LY-DZ for emacs-devel@gnu.org; Thu, 18 Sep 2014 03:54:35 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XUWXn-0002Sw-IF for emacs-devel@gnu.org; Thu, 18 Sep 2014 03:54:29 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:39330) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XUWXn-0002RW-Bn for emacs-devel@gnu.org; Thu, 18 Sep 2014 03:54:23 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1XUWXh-0002je-2b for emacs-devel@gnu.org; Thu, 18 Sep 2014 09:54:17 +0200 Original-Received: from g231109062.adsl.alicedsl.de ([92.231.109.62]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 18 Sep 2014 09:54:17 +0200 Original-Received: from tjolitz by g231109062.adsl.alicedsl.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 18 Sep 2014 09:54:17 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 22 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: g231109062.adsl.alicedsl.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Cancel-Lock: sha1:nVIZwR895LzR/y5dYnPW84JB5dA= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:174486 Archived-At: phillip.lord@newcastle.ac.uk (Phillip Lord) writes: > The manual talks about the performance danger of overlay, but I've just > put an overlay an every word in a 300 line buffer, and I can't notice > that either. I had a different experience when I tried to implement org-hlc.el (Org Hidden Line Cookies [fn:1]) with overlays and buffer change hooks. I always test with a 7000+ lines elisp file, and user experience was pretty close to 'unusable' in a file of that size, so I came to the conclusion that Emacs perfomance is actually quite limited in that area. * Footnotes [fn:1] org-hlc shows the number of hidden lines in a folded subtree in little cookie that looks like this [#20] in the folded headline. -- cheers, Thorsten