[ft-devel] Autohinter, Cantarell-Regular, 14ppem: dot on i and j on different grids, ascenders of d not snapped to zone

[Nikolaus Waxweiler]

Hey list,
Please have a look at 
https://git.gnome.org/browse/cantarell-fonts/plain/otf/Cantarell-Regular.otf?id=06bd50f988bcdf0c428a2d4be38f424b8e6596df 
at 14ppem with the light autohinter. Since this is an .otf and you can't 
force the autohinter in light rendering mode (bug), temporarily apply 
the attached patch to FT and use "LD_PRELOAD=objs/.libs/libfreetype.so 
ftview 14 Cantarell-Regular.otf" and press "B" to get light autohinting. 
14ppem just so happens to be the standard UI font size in GNOME3.

The dot on the i and j are snapped to different heights and the ascender 
of 'd' doesn't seem to be snapped. Annoying in a word like "border" 
where the snapped heights of bd don't match.

I actually noticed similar snapping differences in a few other fonts at 
times, e.g. Georgia at 56px (JUN vs. KST). Is this a bug in the autohinter?

ft-fautohint.patch
Description: Text Data