[Libreoffice] Horizontal glyph adjustments are ignored with ICU layout

[Jan Holesovsky]

Hi Khaled,

On 2011-01-11 at 18:57 +0200, Khaled Hosny wrote:

> > It should be tested with some CTL scripts including reordering and
> > lots of diacritics to check the edge cases are covered. The width
> > will also affect font fallback (calls from MultiSalLayout), so that
> > needs to be tested as well.
> 
> I've tested with fonts that make extensive use of combining marks and no
> major problems so far, however width of fallback glyphs seems to be
> miscalculated when followed by kerned glyphs but I'm yet to understand
> what is going on with fallback. Testing with scripts that require glyph
> reordering still needed, but I don't speak any.

I am so sorry that the review of this takes so much time :-( - but I
suppose most of the people have the same problem - not understanding
enough scripts to be able to test reliably.

I tried to push your patch so that it functions only in the Experimental
mode (that you can switch it on in the Options... dialog); unfortunately
the patch modifies too low-level stuff be able to make use of that
value :-(

Anybody here with ideas what we can do so that the patch helps Khaled,
and is as safe as possible? - so that we can commit it, and fix the
consequences later if anything happens?

Thank you a lot,
Kendy