Windows to Cygwin username mapping: Domain before local account when duplicate name?

[Brian Inglis]

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 machine name in a
>>>>> domain context - can anyone confirm or deny whether this works in Cygwin 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 purpose.
>> That was not in question - the question was could .+$USER be used in lieu 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.

As with .\$USER in Windows or with ~ for $HOME, this should only be a
convenience to allow input or scripts to avoid providing $COMPUTERNAME/$HOSTNAME
in userid command line argument contexts.
Should whether $COMPUTERNAME/$HOSTNAME be output as . in userid contexts be left
to each app?

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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