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PuTTY Bidi - final points
- To: putty at projects dot tartarus dot org
- Subject: PuTTY Bidi - final points
- From: Nadim Shaikli <shaikli at yahoo dot com>
- Date: Mon, 8 Mar 2004 14:59:18 -0800 (PST)
- Cc: developer at arabeyes dot org
Simon, we'd really like a bit of your attention as we are very close
to completing the tasks and addition to PuTTY that we promised, yet
a few nagging areas remain. I will note them below and it might be
best to get on IRC to really hash things out.
1. Shaping code and its insertion point have been modified per your
last comments - please review the patch and comment.
2. We have 2 display issues which are a mystery,
a. There are instances in which 2 glyphs need to be combined and
shown as one. Namely LAM (0x0644) and ALEF (0x0627) get combined
and replaced by LAA (0xFEFB) along with various permutations.
In other words, assume LAM is L and ALEF is A and LAA is K
you would expect to visually see this,
Again, the two glyphs need to be combined to constitute a single
character - we term this 'combining'. What is happening now is
that a space shows up that we can't seem to remove (due to line
length, etc), so we end up with,
K xyz K mnopq
b. There are various instances where composing characters need to be
shown (composing characters are not specific to Arabic either).
These are glyphs that piggy-back on the proceeding character such
as (0x064B or 0x064E, etc). PuTTY currently seems to simply
pass them over - ie. they don't show up.
3. Bidi. Ahmad has already tested things with Bidi on some sample code
that Unicode offers (its license won't allow us to use it either),
but lacking a clear decision on which code to use (wasn't someone
looking at ICU and its license - Owen ?) we are in limbo in terms
of what to use. It is critical that this gets settled and agreed
upon ASAP !!
4. There are various minor issues which will need to be addressed later,
a. Cursor positioning
b. Character deletion
c. Which options to let the user toggle (where to place buttons)
BTW: all the various questions/comments are in the README we're upkeeping.
We anxiously await for your input and advice (and possibly IRC time).
PS: please reply to all those included (ie. make sure to CC 'developer').
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