Option --autosize doesn't work on windows when tempfile path is complicated

[wittiger]

Hi,

the --autosize option doesnt work on windows when the path is complicated enough:

Debug file:
2023-08-03 16:20:17,692 dot2tex DEBUG Running command: latex -interaction=nonstopmode C:\Users\USERN~1\AppData\Local\Temp\dot2texyvzdrxix\dot2tex.tex 2023-08-03 16:20:18,165 dot2tex DEBUG stdout from latex b"This is pdfTeX, Version 3.141592653-2.6-1.40.25 (MiKTeX 23.5) (preloaded format=latex.fmt)\r\n restricted \\write18 enabled.\r\nentering extended mode\r\n! I can't find file "C:/Users/USERN".\r\n<to be read again>

Errors:
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\USERN~1\\AppData\\Local\\Temp\\dot2texyvzdrxix\\dot2tex.log'

The ~ character seems to through something off.

Workaround: Set os environment variable TMPFILE to C:\temp (And create that directory if it does not exist)

Kind regards!