# Wrong kerning in math between w and subscript-j #301

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opened this issue Mar 2, 2020 · 6 comments
Closed

# Wrong kerning in math between w and subscript-j#301

opened this issue Mar 2, 2020 · 6 comments
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### nagmat84 commented Mar 2, 2020

 Describe the bug In mathematics, a base symbol w followed by a subscript j have too much space while at the same time the j and the following letter nearly collide. The overall visual appearance looks as if the subscript j actually belonged to the following letter but not to its true base symbol. To Reproduce Compile this MWE with LuaLaTeX or XeLaTeX \documentclass{article} \usepackage{libertinus} \begin{document} $$w_j q^j$$ \end{document}  Expected behavior The spacing between the w and the j should be smaller, the spacing between the j and the q should be bigger. Screenshots Additional context Also, see here: https://tex.stackexchange.com/q/530675/47156

### khaledhosny commented Mar 2, 2020

 I improved it a bit for XeTeX already, but for LuaTeX it is still broken because LuaTeX does not apply italic correction by default (for reasons beyond me).
closed this Mar 2, 2020

### nagmat84 commented Mar 2, 2020

 OK. Then, who is the correct addressee to whom I should post a bug report?

### khaledhosny commented Mar 2, 2020

 XeTeX output:

### khaledhosny commented Mar 2, 2020

 LuaTeX developers.

### nagmat84 commented Mar 2, 2020 • edited

 Sure thing. I hoped, you had an URL or mail address of the project. I was apparently unable to find it. Of course, there is http://www.luatex.org, but I hoped there would be something like a bug tracker or similar. It does not seem to be right, to post a bug to the legal contact of that website.

### waldyrious commented Mar 2, 2020

 Looking at the description of the mirror repository https://github.com/TeX-Live/luatex, it says: for issues please contact the luatex mailing list And in the support page at luatex.org/support.html there are two mailing lists mentioned (luatex and dev-luatex), whose archives are public and show recent activity. So I guess that's where bugs can be reported.