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RE: BDO example?

From: by way of Martin Duerst <tsahi_75@yahoo.com>
Date: Sat, 16 Aug 2003 11:37:00 -0400
Message-Id: <4.2.0.58.J.20030816113654.060adf10@localhost>
To: www-international@w3.org




it is true that in some places in the mozilla.org
hebrew tech-evangelizm letter, <bdo> can be replaced
with &rlm;. i found out about &rlm; only after that
letter was written (my html is not very good).

on the other side, i'm not sure about the difference
between <span dir="ltr"> and <bdo dir="ltr">, and when
will one of them is better used than the other.

tsahi

--- Jony Rosenne <rosennej@qsm.co.il> wrote:
 > I'm afraid this isn't a good example, and the
 > rational is incorrect. In all
 > cases the BDO is not necessary. In some places an
 > &rlm; is sufficient, in
 > other cases a <span dir="ltr"> will do.
 >
 > The use of BDO should be limited to when necessary.
 > HTML 4 specification
 > says:
 >
 > "The bidirectional algorithm and the dir attribute
 > generally suffice to
 > manage embedded direction changes. However, some
 > situations may arise when
 > the bidirectional algorithm results in incorrect
 > presentation. The BDO
 > element allows authors to turn off the bidirectional
 > algorithm for selected
 > fragments of text."
 >
 > "The BDO element should be used in scenarios where
 > absolute control over
 > sequence order is required (e.g., multi-language
 > part numbers)."
 >
 > Please note that when you want to say "Document
 > Object Model (DOM)", in a
 > right to left paragraph the acronym follows on the
 > left within rtl
 > parentheses.
 >
 > The sample given also has an error in the meta tag.
 >
 > A corrected version, without BDO, is at
 > http://www.qsm.co.il/Hebrew/nobdo.htm
 >
 > Jony
 >
 > > -----Original Message-----
 > > From: www-international-request@w3.org
 > > [mailto:www-international-request@w3.org] On
 > Behalf Of
 > > bidi@prognathous.mail-central.com
 > > Sent: Saturday, August 16, 2003 10:31 AM
 > > To: ishida@w3.org; www-international@w3.org
 > > Subject: RE: BDO example?
 > >
 > >
 > >
 > > Here's an example:
 > >
 >
http://www.mozilla.org/projects/tech-evangelism/site/tech-lett
 > > er-he.html
 > > You can read the rational for the use of BDO here:
 >
 > >
 >
http://bugzilla.mozilla.org/show_bug.cgi?id=99578#c14
 > >
 > > Prog.
 > >
 > > On Fri, 15 Aug 2003 22:30:04 +0200, "Jony Rosenne"
 >
 > > <rosennej@qsm.co.il>
 > > said:
 > > >
 > > > I have used it for imbedding legacy data from an
 > IBM
 > > mainframe, which
 > > > uses visual encoding, in HTML. I suppose this is
 > the most
 > > common use
 > > > today, because there is quite a lot of legacy
 > Hebrew data out there.
 > > >
 > > > The original example which I gave many years ago
 > and helped
 > > convince
 > > > Unicode that an override was required was a
 > reference number, or a
 > > > part number, which looks like a random groups of
 > digits, Hebrew
 > > > letters and Latin letters
 > > > with slashes between them, which are often used
 > in
 > > correspondence. When
 > > > we
 > > > still used typewrites, back in the previous
 > century, people
 > > could type
 > > > any
 > > > odd combination they fancied.
 > > >
 > > > Jony
 > > >
 > > > > -----Original Message-----
 > > > > From: www-international-request@w3.org
 > > > > [mailto:www-international-request@w3.org] On
 > Behalf Of
 > > Richard Ishida
 > > > > Sent: Friday, August 15, 2003 9:03 PM
 > > > > To: www-international@w3.org
 > > > > Subject: BDO example?
 > > > >
 > > > >
 > > > >
 > > > > Does anyone have a convincing example of the
 > need for BDO
 > > > > markup in HTML for Arabic or Hebrew?
 > > > >
 > > > > I already have an example of 'this is what the
 > text looks
 > > > > like in memory', but that is not very
 > mainstream.  I don't
 > > > > really want an example that allows the support
 > of visually
 > > > > encoded text, either.
 > > > >
 > > > > Successful proposers may expect to see their
 > example used as
 > >
 > > > > an illustration in the XHTML 2.0 spec and in
 > GEO guidelines.  ;)
 > > > >
 > > > > Thanks in advance,
 > > > > RI
 > > > >
 > > > > ============
 > > > > Richard Ishida
 > > > > W3C
 > > > >
 > > > > tel: +44 1753 480 292
 > > > > http://www.w3.org/People/Ishida/
 > > > > http://www.w3.org/International/
 > > > > http://www.w3.org/International/geo/
 > > > >
 > > > > See the W3C Internationalization FAQ page
 > > > > http://www.w3.org/International/questions.html
 > > > >
 > > > >
 > > > >
 > > > >
 > > >
 > > >
 > > >
 > >
 > >
 >
 >


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Received on Sunday, 17 August 2003 11:14:22 GMT

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