Jean-Marc Lasgouttes wrote:
Can't we have a minimal tex file that loads the fontspec package and
requires a specific date (there is a syntax for that)?
This would be
\documentclass{article}
\usepackage{fontspec}[2010/07/11]
\begin{document}
.
\end{document}
But I don't know what we gain by that. The error message given by
fontspec is easier to parse than the warning message issued here:
LaTeX Warning: You have requested, on input line 12, version
`2013/07/11' of package fontspec,
but only version
`2011/02/26 v2.1f Advanced font selection for
XeLaTeX/LuaLaTeX'
is available.
So I'd just go with
\documentclass{article}% or minimal
\usepackage{fontspec}
\begin{document}
.
\end{document}
see if LuaTeX compilation returns an error, and maybe parse for the
error message.
Jürgen
