From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#29854: 25.3; Eshell buffer editing gets slower as colored output grows Date: Sun, 31 Dec 2017 21:07:55 -0500 Message-ID: <87mv1ytjpg.fsf@users.sourceforge.net> References: <87vagt6a7d.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1514772437 27594 195.159.176.226 (1 Jan 2018 02:07:17 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 1 Jan 2018 02:07:17 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (gnu/linux) Cc: 29854@debbugs.gnu.org To: Pierre Neidhardt Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Jan 01 03:07:13 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eVpVM-0006bJ-KA for geb-bug-gnu-emacs@m.gmane.org; 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Sun, 31 Dec 2017 18:07:58 -0800 (PST) Original-Received: from zebian ([45.2.119.34]) by smtp.googlemail.com with ESMTPSA id 140sm3983183itx.3.2017.12.31.18.07.56 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 31 Dec 2017 18:07:57 -0800 (PST) In-Reply-To: <87vagt6a7d.fsf@gmail.com> (Pierre Neidhardt's message of "Tue, 26 Dec 2017 11:43:34 +0100") 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:141668 Archived-At: Pierre Neidhardt writes: > The recipe with Evil is as follows: > > - Start Emacs. > > - `M-x eshell'. > > - Insert lots of colored text. On Linux, you can call `dmesg -L=always' a few times. > > - Go to normal state and press `x' wherever you can delete a character. > > It should be possible to reproduce without Evil, I just could not figure > out a slow operation to replace the last step in the recipe. > > According to the Evil maintainer, the issue comes from markers left > behind. So does this fix it? --- i/lisp/ansi-color.el +++ w/lisp/ansi-color.el @@ -417,3 +417,7 @@ ansi-color-apply-on-region start-marker end-marker (ansi-color--find-face codes)) - (setq ansi-color-context-region (if codes (list codes))))))) + (setq ansi-color-context-region (if codes (list codes))))) + ;; Clean up our temporary markers. + (unless (eq start-marker (cadr ansi-color-context-region)) + (set-marker start-marker nil)) + (set-marker end-marker nil))) Also, I wonder if doing this would help also? (setq ansi-color-apply-face-function (lambda (beg end face) (when face (put-text-property beg end 'face face)))) That should make Emacs use text properties instead of overlays for the colored text.