Re: bug in texi2dvi, on Windows/Msys2 it cannot find tex

[Eli Zaretskii]

> From: Gavin Smith <gavinsmith0123@gmail.com>
> Date: Fri, 8 Apr 2022 13:56:31 +0100
> Cc: Tomas Kalibera <tomas.kalibera@gmail.com>, bug-texinfo@gnu.org
> 
> What happens if we don't set MSYSTEM at all?

Then you cannot distinguish between MSYS and MinGW, because 'uname'
will return a value that doesn't tell which one is it.  So you have a
problem, because MinGW needs the semi-colon as path separator, whereas
MSYS (being an emulation of Posix) needs the colon.

That's why the $OSTYPE trick.

> Methinks if MSYSTEM needs to be set correctly for uname to have the correct
> output, then the user will already have this set in their environment.

No, because 'uname' works when MSYSTEM is unset.  It just reports a
value that is not MSYS specific.