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Date:	Sat, 16 Feb 2019 18:40:19 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Windows to Cygwin username mapping: Domain before local account when duplicate name?
Message-ID:	<20190216174019.GF4256@calimero.vinschen.de>
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On Feb 16 09:15, Brian Inglis wrote:
> On 2019-02-16 08:33, Corinna Vinschen wrote:
> > On Feb 16 08:09, Brian Inglis wrote:
> >> On 2019-02-16 02:45, Corinna Vinschen wrote:
> >>> On Feb 15 14:51, Bill Stewart wrote:
> >>>> On Fri, Feb 15, 2019 at 2:38 PM Brian Inglis wrote:
> >>>>> Windows normally allows "." to be used to refer to the local machin=
e name in a
> >>>>> domain context - can anyone confirm or deny whether this works in C=
ygwin or with
> >>>>> getent?
> >>>> AFAICT, the "." shortcut does not work in Cygwin.
> >>> The combining operator for domain prepended usernames is '+'.  This
> >>> is the same character as used by good old Interix for the same purpos=
e.
> >> That was not in question - the question was could .+$USER be used in l=
ieu of
> >> $COMPUTERNAME+$USER or $HOSTNAME+$USER and should $COMPUTERNAME rather=
 than
> >> $HOSTNAME be used in such contexts?
> > Yeah, I misunderstood this, sorry.  The answer is no.  The username is
> > fixed.  Otherwise you'd have two auto-generated passwd entries for the
> > same user which may lead to confusion (not necessarily confusion on the
> > user side...)
> > If this is a desired feature, we could try this, but it might break
> > existing setups again.
>=20
> As with .\$USER in Windows or with ~ for $HOME, this should only be a
> convenience to allow input or scripts to avoid providing $COMPUTERNAME/$H=
OSTNAME
> in userid command line argument contexts.

I added this to Cygwin for testing so you can simply use ".+username" as
a shortcut for "$COMPUTERNAME+username".

I uploaded snapshots to https://cygwin.com/snapshots for playing.


Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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