Re: Valid UTF-8 text mangled up in GtkLabel



On Fri, 5 Aug 2005, Gaurav Jain wrote:

Hi,

I'm trying to set the text in a GtkLabel to a UTF-8 string, which
contains some arabic characters first, followed by my email address in
angle brackets, followed by my name in round brackets.  For e.g., a
sample value is:

X <gaurav somewhere com> (Gaurav Jain)

In the above, 'X' represents a valid sequence of arabic UTF-8
characters.  The problem that I see is that when I run this program
(appended to this mail), the output shown is something like this:

(gaurav somewhere com> (Gaurav Jain> X

Note that the angle and round brackets are all messed up, and that
order of arabic and ascii words is also wrong.

Apparently our milages do vary ;).


Does anyone know WHY this is happening?

Yes, because Arabic is written from right to left, unlike Latin.
And this behavior is part of the Unicode standard.

Just for information, I'm using GTK 2.4.14.  Also,
I was surprised to discover that this works fine with an older version
of GTK (2.0.9).

Right.  Because /bidi/ was not implemented completely in that
version.  This specific part of bidi that is causing problems for
you is called automatic paragraph direction.

Does something special need to be done so I can get
it to work with GTK >= 2.4?

It /is/ working.  If you like to get the behavior similar to the
old one, you need ot insert a U+200E LEFT-TO-RIGHT MARK character
at the beginning of the buffer.


Thanks,
Gaurav

--behdad
http://behdad.org/



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