[PATCH 1 of 2] acl: replace bare getpass.getuser() by platform function

[Yuya Nishihara]

On Tue, 27 Feb 2018 00:18:39 -0500, Matt Harbison wrote:
> On Sat, 24 Feb 2018 21:43:01 -0500, Yuya Nishihara <yuya at tcha.org> wrote:
> 
> > # HG changeset patch
> > # User Yuya Nishihara <yuya at tcha.org>
> > # Date 1519524781 -32400
> > #      Sun Feb 25 11:13:01 2018 +0900
> > # Node ID 03eff66adb3b53f9776628f83b6433ee7b57ee52
> > # Parent  38f4805020437f126f5c1c8f41d78445f9ab6547
> > acl: replace bare getpass.getuser() by platform function
> >
> > Follows up dbadf28d4db0. bytestr() shouldn't be applied here because  
> > getuser()
> > isn't guaranteed to be all in ASCII.
> >
> > This change means GetUserNameA() is used on Windows, but that's probably
> > better than trying to get the current user name in UNIX way.
> 
> This ends up using the real Windows user, which breaks test-acl.t.  I  
> didn't look past the first failure, but maybe a common-pattern.py  
> substitution can be cooked up?  I assume globbing the user away totally is  
> wrong.

Perhaps we can mock it up. I'll send a patch shortly.