From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Bidi reordering engine upgraded Date: Fri, 17 Oct 2014 13:47:31 +0200 Organization: Organization?!? Message-ID: <87zjcuudd8.fsf@fencepost.gnu.org> References: <5440F9BA.6030607@gmx.de> <54410094.3020507@gmx.at> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1413546505 6224 80.91.229.3 (17 Oct 2014 11:48:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 17 Oct 2014 11:48:25 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Oct 17 13:48:18 2014 Return-path: Envelope-to: ged-emacs-devel@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 1Xf612-0003cH-DF for ged-emacs-devel@m.gmane.org; Fri, 17 Oct 2014 13:48:16 +0200 Original-Received: from localhost ([::1]:59437 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xf611-0001wJ-Vq for ged-emacs-devel@m.gmane.org; Fri, 17 Oct 2014 07:48:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:40673) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xf60j-0001w4-LN for emacs-devel@gnu.org; Fri, 17 Oct 2014 07:48:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xf60c-0003bG-HU for emacs-devel@gnu.org; Fri, 17 Oct 2014 07:47:57 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:51825) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xf60c-0003bC-Aw for emacs-devel@gnu.org; Fri, 17 Oct 2014 07:47:50 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Xf60Z-0003Ld-RO for emacs-devel@gnu.org; Fri, 17 Oct 2014 13:47:47 +0200 Original-Received: from x2f417d9.dyn.telefonica.de ([2.244.23.217]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Oct 2014 13:47:47 +0200 Original-Received: from dak by x2f417d9.dyn.telefonica.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 17 Oct 2014 13:47:47 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 26 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: x2f417d9.dyn.telefonica.de X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) Cancel-Lock: sha1:FTlNUsnaPHaN4Knti3vxd86M1+Q= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:175516 Archived-At: martin rudalics writes: >> This is because to the human eye pixels are similar to points in math >> (i.e.has location, does not have extent). Therefor, a mental "magnifying >> glass" (in order to be useful) needs to preserve the point-like property >> of pixels unaffected from the "zoom factor". >> >> Which means that what counts for line length is not number of pixels >> but the spaces between. See line of length 10, magnified: >> >> 0 1 2 3 4 5 6 7 8 9 0 >> * * * * * * * * * * * > > I doubt my eye (and whatever there's left behind it) would consider > > 0 > * > > having zero extent. So which direction is the non-zero extent in? Left-right or up-down? I think the argument is that the 1-pixel undirectional extent you see is a property of the pen rather than of the line. -- David Kastrup