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#18195: 24.3.92; window-screen-lines is not accurate Date: Tue, 05 Aug 2014 16:51:03 +0300 Message-ID: <831tsvqc3c.fsf@gnu.org> References: <86tx5r7l1j.fsf@yandex.ru> <53E097F7.5050407@gmx.at> <53E0ABF9.7070506@yandex.ru> <53E0AF08.50300@gmx.at> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1407246751 30942 80.91.229.3 (5 Aug 2014 13:52:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 5 Aug 2014 13:52:31 +0000 (UTC) Cc: 18195@debbugs.gnu.org, dgutov@yandex.ru To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Aug 05 15:52:23 2014 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 1XEfA0-00012Q-1M for geb-bug-gnu-emacs@m.gmane.org; Tue, 05 Aug 2014 15:52:16 +0200 Original-Received: from localhost ([::1]:59567 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEf9z-0005vY-O2 for geb-bug-gnu-emacs@m.gmane.org; Tue, 05 Aug 2014 09:52:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37213) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEf9r-0005vS-SF for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 09:52:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XEf9l-0001To-Vu for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 09:52:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:51416) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XEf9l-0001Tk-Si for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 09:52:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XEf9l-0001a5-Jq for bug-gnu-emacs@gnu.org; Tue, 05 Aug 2014 09:52:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 05 Aug 2014 13:52:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18195 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18195-submit@debbugs.gnu.org id=B18195.14072466625989 (code B ref 18195); Tue, 05 Aug 2014 13:52:01 +0000 Original-Received: (at 18195) by debbugs.gnu.org; 5 Aug 2014 13:51:02 +0000 Original-Received: from localhost ([127.0.0.1]:58358 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XEf8n-0001YS-Ne for submit@debbugs.gnu.org; Tue, 05 Aug 2014 09:51:02 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:38676) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XEf8m-0001Y7-Dz for 18195@debbugs.gnu.org; Tue, 05 Aug 2014 09:51:01 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0N9U00E006CMWY00@a-mtaout20.012.net.il> for 18195@debbugs.gnu.org; Tue, 05 Aug 2014 16:50:54 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0N9U00EBZ6GTFY70@a-mtaout20.012.net.il>; Tue, 05 Aug 2014 16:50:54 +0300 (IDT) In-reply-to: <53E0AF08.50300@gmx.at> 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:92134 Archived-At: > Date: Tue, 05 Aug 2014 12:16:40 +0200 > From: martin rudalics > > If things like line spacing are involved you really should calculate > pixelwise. He can't: we currently don't expose enough information for Lisp programs to perform layout. E.g., the metrics of glyphs and lines that use arbitrary fonts and display images are not easily available on the Lisp level, and neither are dimensions and line counts of arbitrary regions of the screen (although you could write some clunky Lisp to do the latter). Likewise with dimensions of text in overlays and display properties, and with images. This was never supposed to be needed, and thus was never designed and implemented. If we want to allow such jobs from Lisp, we need to close these gaps.