From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Basic WYSIWYG printing in GNU Emacs (Arabic & Hebrew) Date: Thu, 12 Aug 2021 14:45:56 +0300 Message-ID: <83y296dgy3.fsf@gnu.org> References: <831r71h5jv.fsf@gnu.org> <831r70fc0b.fsf@gnu.org> <83k0krex7n.fsf@gnu.org> <83bl63dvln.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1774"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs-devel@gnu.org To: Anand Tamariya Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Aug 12 13:47:53 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mE9Bf-0000CS-S8 for ged-emacs-devel@m.gmane-mx.org; Thu, 12 Aug 2021 13:47:51 +0200 Original-Received: from localhost ([::1]:43508 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mE9Bd-00063b-U1 for ged-emacs-devel@m.gmane-mx.org; Thu, 12 Aug 2021 07:47:49 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44002) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mE9A6-00053Q-SF for emacs-devel@gnu.org; Thu, 12 Aug 2021 07:46:18 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:34490) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mE9A6-0005pD-7J; Thu, 12 Aug 2021 07:46:14 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1558 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mE9A5-0006Nh-Pp; Thu, 12 Aug 2021 07:46:14 -0400 In-Reply-To: (message from Anand Tamariya on Thu, 12 Aug 2021 14:21:58 +0530) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:272349 Archived-At: > From: Anand Tamariya > Date: Thu, 12 Aug 2021 14:21:58 +0530 > Cc: emacs-devel@gnu.org > > Since you know much more than I do about PostScript and PS printers, > may I ask you a question: if one sends RTL text embedded in a PS > program to a PS printer, does the printer have the capability to > reorder RTL text when it prints it? That is, if you send a string of > RTL characters that way, are they printed in reverse order? Or do PS > printers need the text in the "visual" order, already reordered for > display? > > Two things to remember about PS printer: > - It's like dumb terminal which places characters left to right unless specified otherwise. > - It doesn't understand unicode, let alone RTL re-ordering. Thanks. Then maybe we should expose to Lisp the Emacs bidi reordering engine, in the form of a function that would accept a string and return that string reordered for display according to the UBA. Let me know if that would help you improve the ps-print machinery.