bug#35363: 12.1.2; Generation of previews fails under Windows 10

[Bernt Guldbrandtsen]

Dear Arash,

Thank you for checking.

Is there a way to get additional debug output to  see exactly what step fails?

Best regards,

Bernt

> -----Original Message-----
> From: Arash Esbati <address@hidden>
> Sent: 23. april 2019 22:33
> To: Bernt Guldbrandtsen <address@hidden>
> Cc: address@hidden
> Subject: Re: bug#35363: 12.1.2; Generation of previews fails under Windows 10
> 
> Bernt Guldbrandtsen <address@hidden> writes:
> 
> > Recently, generating previews under AUCTeX started to fail. Until some
> > months ago, I had a working setup.  The OS is Windows 10 (updated). A
> > minimal working example is shown below. Running LaTeX on _region_.tex
> > works and the PDF file produced contains the expected content.
> > However, running gs fails with no diagnostics.
> >
> > The machine has MiKTeX's mgs and "normal" gswin64 installed. At the
> > Cygwin command prompt both can run the conversion successfully. MiKTeX
> > (64 bit version) is updated and has mgs version 9.25. Ghostscript (64
> > bit version) is updated and is version 9.27.
> >
> > In Emacs,
> >
> >    M-! mgs
> >
> > and
> >
> >    M-! gswin64
> >
> > find mgs and gswin64 respectively as expected.
> >
> > A command such as
> >
> >   mgs -dDELAYSAFER -sDEVICE=png16m -dPrinter -dNOPLATFONTS
> >     -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -o 'pic-%d.png'
> >     _region_.pdf
> >
> > produces the expected png output file.
> >
> > It looks like mgs fails to run at all despite that Emacs is able to
> > find mgs.exe correctly.
> >
> > Any pointers?
> 
> Hi Bernt,
> 
> thanks for the report.  I tried your example and it works for me: