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 -----------------------------------------------------------------