bug#6546: win32 grep/shell utf-8 encoding

[Eli Zaretskii]

> Date: Thu, 22 Jul 2010 21:24:12 +0300
> From: Laimonas Vėbra <laimonas.vebra@gmail.com>
> Cc: 6546@debbugs.gnu.org
> 
> The problem is not here. I can change the encoding of the command string 
> (which is passed to external cygwin apps) using
> coding-system-for-write. It works (converted correctly utf-8->cp1257, 
> cp1251, etc), but it doesn't help, because of the way the args (command 
> line) are passed/transcoded through the winapi (CreateProcessA) and 
> cygwin layer.

Did you try to add a suitably-valued LANG variable to
process-environment?  That would at least force Cygwin executables to
work in the Windows codepage.

> This bug is related to bug#6705 (there are detailed description of 
> what's happening)

Then please merge them.