From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-bidi@gnu.org, emacs-devel@gnu.org
Subject: Re: Bidirectional editing in Emacs -- main design decisions
Date: Tue, 19 Apr 2011 10:11:33 -0300 [thread overview]
Message-ID: <jwvbp02wfnd.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <8362qbsj7p.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 18 Apr 2011 17:54:50 +0300")
> After careful thought, I changed my mind about this part. Whenever
> the redisplay iterator finds text that is covered by a `display' text
> property or by an overlay with a `display', `before-string', or
> `after-string' property, it will not stop reordering. Instead, it
> will treat the entire run of text covered by the text property or
> overlay as a single atomic entity, and will reorder it as if it were a
> single special character whose name in Unicode is OBJECT REPLACEMENT
> CHARACTER (u+FFFC). This character's bidirectional category (Other
> Neutral) and other properties are designed so that it can stand for
> display features such as embedded images, and in particular it is
> reordered as appropriate for such embedded objects.
> This will reorder images and display strings in the same way wrt
> surrounding text, which I think is reasonable. It is also in line
> with the pre-Emacs 24 unidirectional display engine, which skipped the
> text covered by such properties in one go, after displaying the image
> or a display string specified by the property.
It sounds very reasonable, but at the same time I don't understand in
which way it differs from your earlier opinion that it should "stop
reordering" (whose meaning is very unclear to me).
Stefan
next prev parent reply other threads:[~2011-04-19 13:11 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-09 21:18 Bidirectional editing in Emacs -- main design decisions Eli Zaretskii
2009-10-09 21:55 ` joakim
2009-10-09 22:29 ` Eli Zaretskii
2009-10-09 22:42 ` joakim
2009-10-10 7:08 ` Eli Zaretskii
2009-10-10 7:28 ` joakim
2009-10-10 8:20 ` Eli Zaretskii
2009-10-09 22:41 ` Eli Zaretskii
2009-10-10 9:16 ` Richard Stallman
2009-10-10 11:38 ` Eli Zaretskii
2009-10-11 8:41 ` Richard Stallman
2009-10-11 20:12 ` Eli Zaretskii
2009-10-11 21:11 ` Eli Zaretskii
2009-10-12 10:11 ` Richard Stallman
2009-10-12 18:40 ` Eli Zaretskii
2009-10-10 13:44 ` Sascha Wilde
2009-10-10 14:06 ` Eli Zaretskii
2009-10-10 15:54 ` Sascha Wilde
2009-10-10 14:57 ` Ehud Karni
2009-10-10 16:38 ` Eli Zaretskii
2009-10-10 15:13 ` Jason Rumney
2009-10-10 16:06 ` Eli Zaretskii
2009-10-10 16:29 ` Jason Rumney
2009-10-10 17:18 ` James Cloos
2009-10-10 18:33 ` Eli Zaretskii
2011-04-18 14:54 ` Eli Zaretskii
2011-04-19 13:11 ` Stefan Monnier [this message]
2011-04-19 16:02 ` Eli Zaretskii
2011-04-20 3:15 ` Stefan Monnier
2011-04-25 17:31 ` Mohsen BANAN
2011-04-25 17:58 ` Eli Zaretskii
2011-04-25 18:44 ` Mohsen BANAN
2011-04-25 18:59 ` Eli Zaretskii
2011-04-25 21:31 ` Now: Paragraph Direction Detection and Harmonization -- Was: " Mohsen BANAN
2011-04-25 22:00 ` Eli Zaretskii
2011-04-26 7:56 ` Mohsen BANAN
2011-04-26 18:05 ` Eli Zaretskii
2011-04-27 21:58 ` Now: Paragraph Direction Detection and Harmonization Mohsen BANAN
2011-04-26 18:24 ` Mohsen BANAN
2011-04-26 19:23 ` Eli Zaretskii
2011-04-26 1:22 ` Now: Paragraph Direction Detection and Harmonization -- Was: Re: Bidirectional editing in Emacs -- main design decisions Stephen J. Turnbull
2011-04-28 0:52 ` Requesting instructions for enabling bidi by default Mohsen BANAN
2011-04-28 1:21 ` Juanma Barranquero
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