Hi Reinhard, > If the usage message is a LaTeX verbatim environment you could try > > \usepackage{upquote} > > in order to get rid of typographic quotes. > > The upquote package re-defines \verb and the verbatim environment and > thus only works with standard LaTeX. With LuaTeX you can achieve the > same with a proper fontspec setup.
Thanks for the suggestion, I've added that package to the documentation template and it seems to fix the issue with quotes on my system. Funny thing is that I've used this package for tex4ht-doc, I just forgot that it is necessary for correct verbatim quotes. Best regards, Michal