[HarfBuzz] information on how to report a bug on OpenType Layout

[Khaled Hosny]

I’d first make sure you are using the same ICU version in LibreOffice
and HarfBuzz ICU shaper, I recall ICU LayoutEngine introducing several
bugs in its latest versions.

Regards,
Khaled

On Tue, Jan 01, 2013 at 06:15:45PM -0600, Behdad Esfahbod wrote:
> Hi Élie,
> 
> I have no explanation for why it works with icu_le backend in HarfBuzz and not
> in LibreOffice.  I can confirm that it works correctly with icu_le backend in
> HarfBuzz.  It is possible that it's a bug in how LibreOffice is using the
> icu_le output, but not a very likely case.
> 
> What would be awesome is for you to test compiling LibreOffice against my
> icu-le-hb wrapper:
> 
>   https://github.com/behdad/icu-le-hb
> 
> If LibreOffice is using the C API instead of C++, you wouldn't even need a
> recompile.  But I guess that's not the case.
> 
> CC'ing Khaled and HarfBuzz in case they can help.
> 
> Cheers,
> behdad
> 
> On 13-01-01 12:11 PM, Élie Roux wrote:
> > Dear Behdad,
> > 
> > Excuse me to bother you, I'm writing to you as you are the main developper of
> > Harfbuzz and Pango, please tell me if I should ask this question elsewhere...
> > 
> > I recently encountered a bug with the rendering of a font in LibreOffice which
> > I reported at https://bugs.freedesktop.org/show_bug.cgi?id=58922 .
> > 
> > I tested with gedit under my Debian stable and the bug is also present. The
> > problem is that I'm quite lost at what to test or where to report the bug to!
> > the git version of Harbuzz's hb-view seems to have a correct output, but I
> > could not test pango (it needs a more recent glib) and I didn't understand the
> > link between the two (is Pango using Harfbuzz ?).
> > 
> > I also wanted to try reporting to ICU, as http://behdad.org/text/ states that
> > OpenOffice uses ICU, but when I test the ICU shaper with hb-view, the result
> > is OK, so I'm not sure if the bug is present or not (otherwise, where would it
> > come from in LibreOffice ?).
> > 
> > Hoping you can give me some clues to report the bug to the good persons and
> > softwares, I wish you all the best for 2013!
> > 
> 
> -- 
> behdad
> http://behdad.org/