I'm writing a document with the MinionPro font from Adobe using fontspec and XeLaTeX. Here is my MWE:
\documentclass{article}
\usepackage[no-math]{fontspec}
\usepackage{MnSymbol}
\setmainfont{MinionPro-Regular}
\setlength{\parindent}{0pt}
\begin{document}
Y'en \\
l'ensemble \\
L'ensemble
\end{document}
Output: 
As you can see, in the first line, the space between Y and en is correct. Just above, l and ensemble are way too close between each other. It is even worst with a capital L. I can manage that with a \hspace, but is it a better, and more automatic way to handle this ?
For comparison, here is how it looks with the LaTeX default font:
