From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: ynyaaa@gmail.com Newsgroups: gmane.emacs.bugs Subject: bug#26051: 25.1; overlays may make emacs very slow Date: Sat, 11 Mar 2017 13:22:48 +0900 Message-ID: <874lz0o31j.fsf@gmail.com> References: <87varh3xql.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1489206192 5916 195.159.176.226 (11 Mar 2017 04:23:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 11 Mar 2017 04:23:12 +0000 (UTC) Cc: 26051@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Mar 11 05:23:07 2017 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 1cmYYc-0000rM-6E for geb-bug-gnu-emacs@m.gmane.org; Sat, 11 Mar 2017 05:23:06 +0100 Original-Received: from localhost ([::1]:41876 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmYYh-0007In-Su for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Mar 2017 23:23:11 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:46452) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cmYYb-0007IW-Ho for bug-gnu-emacs@gnu.org; Fri, 10 Mar 2017 23:23:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cmYYY-0004O7-Ei for bug-gnu-emacs@gnu.org; Fri, 10 Mar 2017 23:23:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:51963) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cmYYY-0004Nz-BU for bug-gnu-emacs@gnu.org; Fri, 10 Mar 2017 23:23:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1cmYYY-00055I-1o for bug-gnu-emacs@gnu.org; Fri, 10 Mar 2017 23:23:02 -0500 X-Loop: help-debbugs@gnu.org In-Reply-To: <87varh3xql.fsf@gmail.com> Resent-From: ynyaaa@gmail.com Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 11 Mar 2017 04:23:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 26051 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 26051-submit@debbugs.gnu.org id=B26051.148920617019507 (code B ref 26051); Sat, 11 Mar 2017 04:23:02 +0000 Original-Received: (at 26051) by debbugs.gnu.org; 11 Mar 2017 04:22:50 +0000 Original-Received: from localhost ([127.0.0.1]:50162 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cmYYL-00054Y-0l for submit@debbugs.gnu.org; Fri, 10 Mar 2017 23:22:49 -0500 Original-Received: from mail-pf0-f180.google.com ([209.85.192.180]:33792) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cmYYI-00054K-MR for 26051@debbugs.gnu.org; Fri, 10 Mar 2017 23:22:47 -0500 Original-Received: by mail-pf0-f180.google.com with SMTP id v190so49011369pfb.1 for <26051@debbugs.gnu.org>; Fri, 10 Mar 2017 20:22:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version; bh=uuMyctLNYTUhwRMoluUlVUWTplZEkf/doKCCyxLTIlQ=; b=vBi9a/h8IBAkghGvCeh3KGV4CbsxJcTntR60+SKZ4sMZRetig60+vBhZYbTGT368au vix27iIGokIJeEocOtgl+EDvuCAqXGO9BtlHARE7e8CZmKBorWic/HfSe3BigU2g5d/w zx20MSGec//r3zP+FUKpgswWxs/ZUjtbOw95yfhnL6YkV0ccDHXzrKg8jQ1MB08VGcwy yRKY08Y+KHJPyhE3Ql0MV274A8mhc51zCBIfPiI0SgcMSpx5KIbKYHnUPwS3J2cu/OiQ SUQsHlhTvgwRRL+26CBygdSloO3lU+JJBY5rluMjwG7JbTkV1gdjOl8QGn2EWMj8tzHj 8jfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version; bh=uuMyctLNYTUhwRMoluUlVUWTplZEkf/doKCCyxLTIlQ=; b=eENx0Aj+T372LCN0lDNmzzLc2UFICIQUBJi8H8zivLmq2MLBu+jLkwBp5vDp8TuDEq EVNNSo2toF/1M3ed+RcwbdWOm2QarLi4jYQndncVEGeOjliiLY7P90CJB9Yoegtsfr7d gtrBzwqFRZjtHFHyxQSQTDMxZ3Qj7ehn1EHM1sR6gC8bIMcDyIvVIVDwRURUHozECtrz dUwe2CoJS6JRxlvACAeTpCHmCxhUrTzYBW+8IutNgI36OHiPA9J7Rv2FjBUuFKBBMHOq YmSvG9CuKf/aN/VoMIEG9SKKRQRRATwvrW8MjKarRJVaKXZtDjGAoNmoWJzTytntkg/p yKPg== X-Gm-Message-State: AMke39nnhONYKCaktaF7GYtOelEaC3HTVdYXlC9LNdbqygqa5qV1O4eK85pW4yQf6rI8Cg== X-Received: by 10.99.51.76 with SMTP id z73mr24557187pgz.137.1489206160834; Fri, 10 Mar 2017 20:22:40 -0800 (PST) Original-Received: from PNUT-PC (east24-p58.eaccess.hi-ho.ne.jp. [218.42.167.59]) by smtp.gmail.com with ESMTPSA id h9sm21197845pfd.103.2017.03.10.20.22.39 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 10 Mar 2017 20:22:40 -0800 (PST) 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:130461 Archived-At: Eli Zaretskii writes: > The overlays is not the main problem here, the main problem is that > your buffer is made of digits, which are neutral characters for the > bidirectional display, so it needs to work much harder. Compare with > this: > > (let ((n 65536)) > (save-excursion (dotimes (i n) (insert (format "a%d\n" i)))) > (dotimes (i n) (make-overlay (point) (progn (forward-line) (point)))) > (message "Done.")) > > I see no bugs here, just known issues/limitations of the current > display engine. I want the buffer to be unchanged. And I don't know what characters are neutral. The form above take a few seconds. I tried some characters instead of 'a'. Each of them take long time. "@%d\n" "?%d\n" "\u00E1%d\n" ;; LATIN SMALL LETTER A WITH ACUTE "\u3042%d\n" ;; HIRAGANA LETTER A "\u4E00%d\n" ;; CJK IDEOGRAPH-4E00 "\uFF41%d\n" ;; FULLWIDTH LATIN SMALL LETTER A