xelatex myriad pro l with apostrophe issue

Question

I compile my document with xelatex. I use Myriad pro

\setmainfont[Mapping=tex-text]{Myriad Pro}

My problem is that the "l'a" is looking OK but not the "l'i" the i touches the apostrophes. Can someone tell me how to fix this issue?

Answer 1

There is nothing wrong with the font, you can find this out by writing the same thing into another program. It is a issue with ICU engine with XeTeX.

One way to fix it is to issue a zero kern after the apostrophe:

l'\kern0pt inno

Another option would be to use \XeTeXinterchartoks to insert that kern automatically. See this answer on how to do it.

Here's an example as requested:

\documentclass{article}
\usepackage{fontspec}
\setmainfont[Ligatures=TeX]{Myriad Pro}
\XeTeXinterchartokenstate=1
\newXeTeXintercharclass \aposclass
\XeTeXcharclass `' \aposclass
\XeTeXinterchartoks \aposclass 0 = {\kern0pt }
\begin{document}
L'arbre de l'inno
\end{document}