2011/10/11 Eli Zaretskii e...@gnu.org:
From: Philippe Verdy verd...@wanadoo.fr
This means that you need to break lines in two separate steps: first
between paragraphs or forced line breaks, then a second after
determining the the direction of all characters and then remplacing
their possible
From: Philippe Verdy verd...@wanadoo.fr
Date: Thu, 13 Oct 2011 15:56:06 +0200
Cc: due...@it.aoyama.ac.jp, libo@gmail.com, unicode@unicode.org
This would mean to run the reordering twice, since you don't know
where to wrap a line until you lay out all of its grapheme clusters,
and
Date: Tue, 11 Oct 2011 13:39:36 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: libo@gmail.com, unicode@unicode.org
Sorry, I don't follow you. There's no such line-folding in the
Emacs implementation of the UBA. A line that doesn't fit the window
width is reordered as a
From: Philippe Verdy verd...@wanadoo.fr
Date: Tue, 11 Oct 2011 01:00:19 +0200
Cc: li bo libo@gmail.com, unicode@unicode.org
2011/10/10 Eli Zaretskii e...@gnu.org:
what's the meaning of 'appropriate Newline Functions' and 'higher-level
protocol paragraph determination'?
Newline
Date: Tue, 11 Oct 2011 10:29:51 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: li bo libo@gmail.com, unicode@unicode.org
From section 3:
Paragraphs are divided by the Paragraph Separator or appropriate
Newline Function (for guidelines on the handling of CR, LF, and
Date: Tue, 11 Oct 2011 10:53:39 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: li bo libo@gmail.com, unicode@unicode.org
I might add here that 'break a line' in the Bidi algorithm is done
before actual reordering (which is done line-by-line), but after
calculating all the
Hello Eli,
There is absolutely no problem to treat the algorithm in UAX#9 as a set
of requirements, and come up with a totally different implementation
that produces the same results. I think actually UAX#9 says so somewhere.
But what is, strictly speaking, not allowed is to change the
Den 2011-10-11 09:43, skrev Eli Zaretskii e...@gnu.org:
Let me give you just one example: if the character should be mirrored,
you cannot decide whether it fits the display line until _after_ you
know what its mirrored glyph looks like. But mirroring is only
resolved at a very late stage of
Hello Kent,
I was also very much thinking that mirrored glyph should be of the same
width, but there might be subtle issues when you consider kerning. As a
very basic example, think about kerning of the pair K), and then think
about K(.
Regards, Martin.
On 2011/10/11 19:39, Kent Karlsson
Date: Tue, 11 Oct 2011 18:54:10 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: libo@gmail.com, unicode@unicode.org
There is absolutely no problem to treat the algorithm in UAX#9 as a set
of requirements, and come up with a totally different implementation
that produces the
Date: Tue, 11 Oct 2011 12:39:57 +0200
From: Kent Karlsson kent.karlsso...@telia.com
CC: libo@gmail.com,
unicode@unicode.org
Well, I think there is a silent (but reasonable, I would say) assumption
that mirroring does not change the width of a glyph... I would think that if
a
2011/10/11 Martin J. Dürst due...@it.aoyama.ac.jp:
Hello Kent,
I was also very much thinking that mirrored glyph should be of the same
width, but there might be subtle issues when you consider kerning. As a very
basic example, think about kerning of the pair K), and then think about K(.
2011/10/11 Eli Zaretskii e...@gnu.org:
Date: Tue, 11 Oct 2011 13:39:36 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: libo@gmail.com, unicode@unicode.org
Sorry, I don't follow you. There's no such line-folding in the
Emacs implementation of the UBA. A line that doesn't fit
From: Philippe Verdy verd...@wanadoo.fr
Date: Tue, 11 Oct 2011 17:03:51 +0200
Cc: Kent Karlsson kent.karlsso...@telia.com, Eli Zaretskii e...@gnu.org,
libo@gmail.com,
unicode@unicode.org
So you'll need to first compute the directionality of all characters
in a paragraph (where
From: Philippe Verdy verd...@wanadoo.fr
Date: Tue, 11 Oct 2011 17:44:12 +0200
Cc: Martin J. Dürst due...@it.aoyama.ac.jp,
libo@gmail.com, unicode@unicode.org
Then your implementation is completely couterintutive: imagine what
will happen if you press enter in a RTL context a
Hi,
About P1 in UBA
*P1. Split the text into separate paragraphs. A paragraph separator is kept
with the previous paragraph. Within each paragraph, apply all the other
rules of this algorithm.*
Here, what does paragraph mean? which symbols can *Split the text into
separate paragraphs?
I think
Date: Mon, 10 Oct 2011 17:47:21 +0800
From: li bo libo@gmail.com
*P1. Split the text into separate paragraphs. A paragraph separator is kept
with the previous paragraph. Within each paragraph, apply all the other
rules of this algorithm.*
Here, what does paragraph mean? which symbols
On 2011/10/10 21:10, Eli Zaretskii wrote:
Date: Mon, 10 Oct 2011 17:47:21 +0800
From: li bolibo@gmail.com
From section 3:
Paragraphs are divided by the Paragraph Separator or appropriate
Newline Function (for guidelines on the handling of CR, LF, and CRLF,
see Section 4.4,
On 2011/10/11 10:29, Martin J. Dürst wrote:
On 2011/10/10 21:10, Eli Zaretskii wrote:
Date: Mon, 10 Oct 2011 17:47:21 +0800
In addition to the Paragraph Separator, _any_ newline function (LF,
CR+LF, CR, or NEL) can end a paragraph. Also U+2028, the LS
character. See section 5.8 of the
2011/10/11 Martin J. Dürst due...@it.aoyama.ac.jp:
This is different from what you did in Emacs, which I'd call line-folding,
i.e. cut the line after a paragraph is laid out and reordered completely as
a single (potentially very long) line. This makes some sense in Emacs, where
the basic
Date: Tue, 11 Oct 2011 10:53:39 +0900
From: Martin J. Dürst due...@it.aoyama.ac.jp
CC: li bo libo@gmail.com, unicode@unicode.org
This is different from what you did in Emacs, which I'd call
line-folding, i.e. cut the line after a paragraph is laid out and
reordered completely as a
On 2011/10/11 13:07, Eli Zaretskii wrote:
Date: Tue, 11 Oct 2011 10:53:39 +0900
From: Martin J. Dürstdue...@it.aoyama.ac.jp
CC: li bolibo@gmail.com, unicode@unicode.org
This is different from what you did in Emacs, which I'd call
line-folding, i.e. cut the line after a paragraph is laid out
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