GNU bug report logs - #27525
25.1; Line wrapping of bidi paragraphs

Previous Next

Full log

Message #23 received at 27525 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Itai Berli <itai.berli <at> gmail.com>
Cc: 27525 <at> debbugs.gnu.org
Subject: Re: bug#27525: 25.1; Line wrapping of bidi paragraphs
Date: Tue, 04 Jul 2017 17:40:07 +0300

> From: Itai Berli <itai.berli <at> gmail.com>
> Date: Tue, 4 Jul 2017 12:10:17 +0300
> 
> I'd like to add that this behavior breaks the Unicode bidirectional algorithm (UBA), and hence invalidates
> Emacs' claim of full conformance, or indeed of weak conformance, for that matter (so-called 'implicit
> bidirectionality' -- see section 4.2 of the UBA specifications).

Yes, line wrapping when text direction is opposite to the paragraph
direction is where Emacs deviates from the UBA.  I've added this
caveat to the Emacs manuals a few days ago.

The "full conformance" part refers to the fact that all the explicit
directional controls are supported, including the isolates.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.