On 3/3/2020 9:43 PM, Matthias Nagel wrote:
Dear all,
as I am unsure what is the officially correct way to submit a potential
bug, I post it here and would like to draw your attention to this post,
because I do not now of the tracker is still in use.
http://tracker.luatex.org/view.php?id=1019
My apologies, if this is a double posting. Also, I already have posted
this problem to the Libertinus project as I initially thought this would
be a bug in the font, but the maintainer of Libertinus said it is an
issue with LuaTex.
w_j q^j
the w sticks out of its boundingbox, as does the j ... in traditional
tex font processing the italic correction is always added to the width
and removed in some cases, in opentype it's only added in some cases and
the real width is used (combined with staircase kerning for relative
positioning)
now, the distance between w and j: adding the ic to w would increase the
distance, and even if it were removed later on it would then be too far
apart ... so ... no robust solution for that kind of cases (and we would
start oscillating solutions depending on the bug-of-the-day: fix this,
breaks that, add another flag here and there ... well, that's something
for macro packages to do) ... of course one can apply some "fix feature"
(which i probably would do in context if i'd use that font) that could
either implement a staircase kern, or fix the width
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
_______________________________________________
dev-luatex mailing list
dev-luatex@ntg.nl
https://mailman.ntg.nl/mailman/listinfo/dev-luatex
