From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Upcoming loss of usability of Emacs source files and Emacs. Date: Mon, 29 Jun 2015 17:39:29 +0300 Message-ID: <83a8vi60ke.fsf@gnu.org> References: <20150615142237.GA3517@acm.fritz.box> <87y4jkhqh5.fsf@uwakimon.sk.tsukuba.ac.jp> <557F3C22.4060909@cs.ucla.edu> <5580D356.4050708@cs.ucla.edu> <87si9qonxb.fsf@gnu.org> <5581C29E.1030101@yandex.ru> <558D6A3D.1070706@yandex.ru> <877fqnzpno.fsf@gnu.org> <5590493C.8000007@yandex.ru> <87381bzife.fsf@gnu.org> <75f2fe0f-f15e-4af8-b9ae-0ddc9231c9ab@default> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1435588827 14300 80.91.229.3 (29 Jun 2015 14:40:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 29 Jun 2015 14:40:27 +0000 (UTC) Cc: eggert@cs.ucla.edu, rms@gnu.org, tsdh@gnu.org, emacs-devel@gnu.org, monnier@iro.umontreal.ca, dgutov@yandex.ru, acm@muc.de, stephen@xemacs.org To: Drew Adams Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jun 29 16:40:19 2015 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 1Z9aEN-000765-10 for ged-emacs-devel@m.gmane.org; Mon, 29 Jun 2015 16:40:19 +0200 Original-Received: from localhost ([::1]:42529 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aEM-0001ma-J2 for ged-emacs-devel@m.gmane.org; Mon, 29 Jun 2015 10:40:18 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35996) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aDt-0001Qh-Hn for emacs-devel@gnu.org; Mon, 29 Jun 2015 10:39:50 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z9aDp-0008EP-Bg for emacs-devel@gnu.org; Mon, 29 Jun 2015 10:39:49 -0400 Original-Received: from mtaout23.012.net.il ([80.179.55.175]:56953) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aDp-0008E1-31; Mon, 29 Jun 2015 10:39:45 -0400 Original-Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0NQP00000N67JD00@a-mtaout23.012.net.il>; Mon, 29 Jun 2015 17:39:27 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NQP0000YNDQGQ50@a-mtaout23.012.net.il>; Mon, 29 Jun 2015 17:39:26 +0300 (IDT) In-reply-to: <75f2fe0f-f15e-4af8-b9ae-0ddc9231c9ab@default> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.175 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:187639 Archived-At: > Date: Sun, 28 Jun 2015 16:05:06 -0700 (PDT) > From: Drew Adams > Cc: Paul Eggert , rms@gnu.org, emacs-devel@gnu.org, > Stefan Monnier , acm@muc.de, stephen@xemacs.org > > What we should look for is both (1) a mirror pair of chars > that is not confusable with other uses of the same and > (2) a pair of chars that is simple to insert, search, etc. - > in general, simple to use in a rudimentary, plain-text > (perhaps even ASCII) context. If you want mirror pairs, you should select only those pairs that are mentioned in the BidiBrackets.txt file that is part of the Unicode Character Database (UCD). You can see them in Emacs by looking at characters that have non-nil 'paired-bracket' property. If you select any other pairs, they will look wrong in R2L text.