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#15339: 24.3.50; Control characters are displayed as square in describe-char Date: Thu, 12 Sep 2013 18:21:35 +0300 Message-ID: <83hadqhxq8.fsf@gnu.org> References: <9264526B-18F9-4912-AEEF-FE7277866926@swipnet.se> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Trace: ger.gmane.org 1378999398 23862 80.91.229.3 (12 Sep 2013 15:23:18 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 12 Sep 2013 15:23:18 +0000 (UTC) Cc: 15339@debbugs.gnu.org To: Xue Fuqiao Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Sep 12 17:23:20 2013 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 1VK8jm-0001qU-Cm for geb-bug-gnu-emacs@m.gmane.org; Thu, 12 Sep 2013 17:23:18 +0200 Original-Received: from localhost ([::1]:42455 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VK8jl-0002YH-VD for geb-bug-gnu-emacs@m.gmane.org; Thu, 12 Sep 2013 11:23:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44542) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VK8jc-0002KZ-GL for bug-gnu-emacs@gnu.org; Thu, 12 Sep 2013 11:23:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VK8jW-0003hn-M9 for bug-gnu-emacs@gnu.org; Thu, 12 Sep 2013 11:23:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:50773) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VK8jW-0003hj-IT for bug-gnu-emacs@gnu.org; Thu, 12 Sep 2013 11:23:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VK8jW-0001K4-6r for bug-gnu-emacs@gnu.org; Thu, 12 Sep 2013 11:23:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 12 Sep 2013 15:23:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15339 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15339-submit@debbugs.gnu.org id=B15339.13789993605047 (code B ref 15339); Thu, 12 Sep 2013 15:23:01 +0000 Original-Received: (at 15339) by debbugs.gnu.org; 12 Sep 2013 15:22:40 +0000 Original-Received: from localhost ([127.0.0.1]:59065 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VK8j9-0001JK-3D for submit@debbugs.gnu.org; Thu, 12 Sep 2013 11:22:39 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:42849) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VK8j6-0001J6-V0 for 15339@debbugs.gnu.org; Thu, 12 Sep 2013 11:22:37 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0MT000C00QFSB600@a-mtaout20.012.net.il> for 15339@debbugs.gnu.org; Thu, 12 Sep 2013 18:21:49 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MT000C1FQODBP10@a-mtaout20.012.net.il>; Thu, 12 Sep 2013 18:21:49 +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: 140.186.70.43 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:78285 Archived-At: > Date: Thu, 12 Sep 2013 16:42:20 +0800 > From: Xue Fuqiao > Cc: "15339@debbugs.gnu.org" <15339@debbugs.gnu.org> > > I mean the ‘decomposition’ character property (see the OP). That portion of the display shows (in this case, since there's no decomposition) how the raw character in question would be displayed. And since no available font has a glyph for ^L, you see an empty square. That looks correct to me. You expected to see ^L, but that comes from a display table, which is bypassed in this case, and for good reason, as explained above. So I don't think this is a bug, just something that might not be expected. > I tried it, but I can't see even a square. It is like this: > > decomposition: (12) ('') That's not what I see, I see the TTY graphics for Form Feed (FF) character, which is also correct. This is on MS-Windows, where the console font has a glyph for FF, which looks like ♀.