[luatex] More on loading non-ascii filenames on windows

[Ulrike Fischer]

Am Sun, 30 Sep 2018 11:45:32 +0200 schrieb Patrick Gundlach:

> Hello again,
> 
> I am still struggling with loading images with filenames on windows. (My test environment is windows 7, 32 bit)
> 
> I now bypass lua file system to build a file list, so I have all filenames encoded as UTF-8. Now I try to pass a filename to 
> 
> img.scan{...}
> 
> But as I understand, Windows is not happy about the UTF8 filenames, so what should I do?
> 
> ! error:  (pdf backend): reading image file 'Z:\foo\cöw.pdf' failed
> !  ==> Fatal error occurred, no output PDF file produced!
> 
> I have tried to pass the CP1250 value for ö (\f6) but this gives me:
> 
> I/O Error: Couldn't open file 'c<f6>w.pdf': No error.
> 
> ! error:  (pdf inclusion): reading image failed
> !  ==> Fatal error occurred, no output PDF file produced!
> 

I tried on a windows 10 laptop

\documentclass{article}
\begin{document}%
\directlua{
a = img.write({ filename = "cöw.pdf"}) 
}
\end{document}

It works with miktex (luatex 1.07) but fails with texlive (1.07 +
1.09). 

You could ask on the texlive list, but imho it would be better to
avoid such names. The majority of crashes I saw in last years was
connected to non-ascii in graphics and other files. 


-- 
Ulrike Fischer 
https://www.troubleshooting-tex.de/