Nadim Shaikli <[EMAIL PROTECTED]> writes: > 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, > > LAxyz LAmnopq > > changed to, > > Kxyz Kmnopq > > 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
This isn't surprising at all. You're replacing two single-width glyphs in positions n and n+1 with just one single-width glyph in position n, but as far as PuTTY's internals are concerned the next character is still at position n+2. You need to work out a way of dealing with this, moving the following word so that it starts to display at n+1 even though the terminal emulator should still believe it starts at n+2. It would be good if you then preserved the word's visual length by sticking some tatweel in to make up the space there. (Note for non-Arabic-speaking folk: tatweel is a meaningless mark that can be used to stretch Arabic words.) > 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. > > http://www.unicode.org/charts/PDF/U0600.pdf Yes. PuTTY doesn't currently support Unicode combining characters. See: http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/unicode-combining.html (Sorrry if this is rushed or garbled. No time to go into the other things at the moment.) (S) _______________________________________________ Developer mailing list [EMAIL PROTECTED] http://lists.arabeyes.org/mailman/listinfo/developer
