From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.devel Subject: RE: Upcoming loss of usability of Emacs source files and Emacs. Date: Mon, 29 Jun 2015 07:57:15 -0700 (PDT) Message-ID: 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>> <<83a8vi60ke.fsf@gnu.org>> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1435589880 585 80.91.229.3 (29 Jun 2015 14:58:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 29 Jun 2015 14:58:00 +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: Eli Zaretskii , Drew Adams Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jun 29 16:57:46 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 1Z9aVF-0001On-On for ged-emacs-devel@m.gmane.org; Mon, 29 Jun 2015 16:57:46 +0200 Original-Received: from localhost ([::1]:42616 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aVF-0007Ya-8L for ged-emacs-devel@m.gmane.org; Mon, 29 Jun 2015 10:57:45 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44764) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aUz-0007Ws-5m for emacs-devel@gnu.org; Mon, 29 Jun 2015 10:57:30 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z9aUy-0002TW-7A for emacs-devel@gnu.org; Mon, 29 Jun 2015 10:57:29 -0400 Original-Received: from userp1040.oracle.com ([156.151.31.81]:41603) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9aUu-0002SR-En; Mon, 29 Jun 2015 10:57:24 -0400 Original-Received: from aserv0022.oracle.com (aserv0022.oracle.com [141.146.126.234]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t5TEvIpp002614 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 29 Jun 2015 14:57:19 GMT Original-Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserv0022.oracle.com (8.13.8/8.13.8) with ESMTP id t5TEvGOh024283 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Mon, 29 Jun 2015 14:57:16 GMT Original-Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id t5TEvGGv017808; Mon, 29 Jun 2015 14:57:16 GMT In-Reply-To: <<83a8vi60ke.fsf@gnu.org>> X-Priority: 3 X-Mailer: Oracle Beehive Extensions for Outlook 2.0.1.9 (901082) [OL 12.0.6691.5000 (x86)] X-Source-IP: aserv0022.oracle.com [141.146.126.234] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 156.151.31.81 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:187642 Archived-At: > > 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. >=20 > 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. >=20 > If you select any other pairs, they will look wrong in R2L text. Point taken. But I'm not sure that what you say is true of "any other pairs", where pair is regarded as two chars that we might consider using as code/key phrase bookends. I'm thinking of the pair ` and ', for instance. Not exact mirror images by any means, but workable. The point is that there might well be such pairs that are not problematic for Bidi - chars that we humans might consider as pairable enough for our purposes. Anyway, I'm not looking for a different pair from `...'. If someone finds one that satisfies the criteria, I'm open to it, of course.