From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#21747: 25.0.50; while-no-input breaks kbd event handling when called from post-command-hook Date: Sat, 24 Oct 2015 13:52:09 +0300 Message-ID: <83vb9wwnc6.fsf@gnu.org> References: <87bnboemqb.fsf@gnu.org> <838u6sy9s1.fsf@gnu.org> <877fmcejgn.fsf@gnu.org> <83ziz8wrun.fsf@gnu.org> <8737x0egvm.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1445684007 14782 80.91.229.3 (24 Oct 2015 10:53:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 24 Oct 2015 10:53:27 +0000 (UTC) Cc: tsdh@gnu.org, monnier@iro.umontreal.ca, 21747@debbugs.gnu.org, storm@cua.dk To: bruce.connor.am@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Oct 24 12:53:15 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 1ZpwRh-0007Iu-9N for geb-bug-gnu-emacs@m.gmane.org; Sat, 24 Oct 2015 12:53:09 +0200 Original-Received: from localhost ([::1]:43751 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZpwRg-0001a0-Hb for geb-bug-gnu-emacs@m.gmane.org; Sat, 24 Oct 2015 06:53:08 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35457) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZpwRd-0001Zs-O1 for bug-gnu-emacs@gnu.org; Sat, 24 Oct 2015 06:53:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZpwRa-0006ly-Hu for bug-gnu-emacs@gnu.org; Sat, 24 Oct 2015 06:53:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:44901) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZpwRa-0006lp-FY for bug-gnu-emacs@gnu.org; Sat, 24 Oct 2015 06:53:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1ZpwRa-00022X-Ck for bug-gnu-emacs@gnu.org; Sat, 24 Oct 2015 06:53:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 24 Oct 2015 10:53:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 21747 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 21747-submit@debbugs.gnu.org id=B21747.14456839467793 (code B ref 21747); Sat, 24 Oct 2015 10:53:02 +0000 Original-Received: (at 21747) by debbugs.gnu.org; 24 Oct 2015 10:52:26 +0000 Original-Received: from localhost ([127.0.0.1]:35609 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZpwQz-00021d-Gw for submit@debbugs.gnu.org; Sat, 24 Oct 2015 06:52:25 -0400 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:45515) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZpwQf-000216-IM for 21747@debbugs.gnu.org; Sat, 24 Oct 2015 06:52:24 -0400 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0NWQ00K000JAJQ00@a-mtaout22.012.net.il> for 21747@debbugs.gnu.org; Sat, 24 Oct 2015 13:52:04 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NWQ00KXX0URK200@a-mtaout22.012.net.il>; Sat, 24 Oct 2015 13:52:04 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il 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: 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:107979 Archived-At: > Date: Sat, 24 Oct 2015 11:30:42 +0100 > From: Artur Malabarba > Cc: Stefan Monnier , Kim Storm , 21747@debbugs.gnu.org, > Eli Zaretskii > > So maybe the docstring for post-command-hook should point out this detail and > recommend that functions added to this hook call sit-for if they're going to do > potentially expensive processing. Just being potentially expensive is not enough to trigger the problem. You need to actually hog Emacs (or close to that) to prevent redisplay from eventually happening. I agree that expensive processing in post-command-hook is not a good idea (and said so several times in the past), but people are still doing that, so I guess just advertising the problem is not enough. (I don't object to adding this to documentation, of course.)