lualatex: graphicx does not find any files when grffile is loaded

[Maximilian Nöthe]

Hi all,

With the latest lualatex version,
loading the grffile package completely breaks includegraphics.

Example:

\documentclass{scrartcl}
\usepackage{graphicx}
\usepackage{grffile}

\begin{document}
     \includegraphics{example-image-a.pdf}
\end{document}


The example compiles fine with pdflatex and xelatex, but with lualatex 
it raises the following error:

LaTeX Warning: File `example-image-a.pdf' not found on input line 9.

! error: (file """example-image-a".pdf) (pdf backend): cannot find image 
file '"""example-image-a".pdf'
! ==> Fatal error occurred, no output PDF file produced!

Observe the strange extra quotes around the file name.

Any ideas?

Cheers
Max