From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#23377: 25.0.93; Completion is extremely slow for insert-char Date: Mon, 25 Apr 2016 21:10:50 -0700 Organization: UCLA Computer Science Department Message-ID: <571EEA4A.3020105@cs.ucla.edu> References: <2fd9a9b4-fb49-da6e-f13b-0fce4708159a@cs.ucla.edu> <34cb394c-1a2f-4fe5-8a2f-d26702487aef@default> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1461643942 32627 80.91.229.3 (26 Apr 2016 04:12:22 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 26 Apr 2016 04:12:22 +0000 (UTC) Cc: "N. Jackson" , 23377@debbugs.gnu.org To: Drew Adams , Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Apr 26 06:12:10 2016 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 1auuM6-0005wq-Ie for geb-bug-gnu-emacs@m.gmane.org; Tue, 26 Apr 2016 06:12:10 +0200 Original-Received: from localhost ([::1]:36152 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auuM5-0003MM-QD for geb-bug-gnu-emacs@m.gmane.org; Tue, 26 Apr 2016 00:12:09 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41662) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auuM1-0003Jh-Lc for bug-gnu-emacs@gnu.org; Tue, 26 Apr 2016 00:12:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1auuLy-0006xN-F1 for bug-gnu-emacs@gnu.org; Tue, 26 Apr 2016 00:12:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34988) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1auuLy-0006xH-Bq for bug-gnu-emacs@gnu.org; Tue, 26 Apr 2016 00:12:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1auuLy-0005cp-5f for bug-gnu-emacs@gnu.org; Tue, 26 Apr 2016 00:12:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 26 Apr 2016 04:12:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23377 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch confirmed Original-Received: via spool by 23377-submit@debbugs.gnu.org id=B23377.146164386421550 (code B ref 23377); Tue, 26 Apr 2016 04:12:02 +0000 Original-Received: (at 23377) by debbugs.gnu.org; 26 Apr 2016 04:11:04 +0000 Original-Received: from localhost ([127.0.0.1]:47325 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1auuL1-0005bW-SZ for submit@debbugs.gnu.org; Tue, 26 Apr 2016 00:11:04 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:46923) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1auuKz-0005ay-S7 for 23377@debbugs.gnu.org; Tue, 26 Apr 2016 00:11:02 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 3733F16125C; Mon, 25 Apr 2016 21:10:55 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id mXFpRgSO0whj; Mon, 25 Apr 2016 21:10:54 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 7EAD0161266; Mon, 25 Apr 2016 21:10:54 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 36H3S1dtFTmy; Mon, 25 Apr 2016 21:10:54 -0700 (PDT) Original-Received: from [192.168.1.9] (unknown [100.32.155.148]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 50C3416125C; Mon, 25 Apr 2016 21:10:54 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 In-Reply-To: <34cb394c-1a2f-4fe5-8a2f-d26702487aef@default> 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: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:116849 Archived-At: Drew Adams wrote: > if the main reason to disable it is for performance in > an extreme use case (C-x 8 RET TAB) It's not that extreme. It's natural for a user to get the whole list and = then use C-s to find the desired character. Also, there's a problem even in less-"extreme" cases. I just now tried 'C= -x 8 RET B TAB', which lists every character whose name starts with "B", and t= his took about 18 s on my platform, whereas with Emacs 24.5 it is almost instantaneous. 18 s is waayyy to slow for this sort of user interaction. Stefan's suggestion of a config var sounds good. It's a bit late to be ad= ding features to the emacs-25 branch, though, so I'm inclined to revert in ema= cs-25 (with a "do not merge to master") and add a customizable var in master.