On Jul 30 21:29, Corinna Vinschen wrote:
> On Jul 30 13:09, Eric Blake wrote:
> > On 07/30/2014 12:40 PM, Corinna Vinschen wrote:
> > 
> > >>> 2. Shall we stick to '+' as the separator char or choose another one?
> > >>>    If so, which one?
> > >>
> > >> How about "@"?
> > > 
> > > Dunno.  It *might* be a good alternative to '+'.  Personally I just
> > > dislike that a '@' is a less "light" character and it might give a wrong
> > > idea.  Email:  name AT domain.  Cygwin account:  domain AT name.
> > 
> > How bad would it be to treat the window's DOMAIN\user as cygwin
> > user@DOMAIN?  Yes, it means string-splicing to rearrange strings when
> > converting between the two forms, rather than just single-character
> > replacement, but it might work.
> 
> It's more or less simple from a coding perspective, slightly more
> complicated when evaluating the incoming name in a call to
> getpwnam/getgrnam.
> 
> But I'm concerned that using this form is worse than DOMAIN@user.  As
> you know, starting with Active Directory in Windows 2000, there are two
> variations of the domain name.
> 
> The first is the Netbios domain name as used in pre-Windows 2000
> already.  It's called "flat name" and it consist of alphanumeric chars
> only.  The Windows expression for this type of username is
> FLATEXAMPLE\user.
> 
> The second, more modern is the DNS-type domain name.  In this case the
> domain name is a DNS-style name like example.com.  A username in this
> style is written like a email address (trying to workaround the mailing
> list filters) user AT example DOT com.  You can use this style to login
> to your machine, for instance.
> 
> FLATEXAMPLE and example.com are the same domain, just two different
> names for the same thing.
> 
> LookupAccountSid and LookupAccountName return the FLATEXAMPLE domain and
> that's used in the Cygwin username.
> 
> If you start using the FLATEXAMPLE domain in the writing style of
> the DNS-style domain, I can see a lot of confusion coming up.  This
> does in no way reflect what the users use with native Windows.
> 
> "name @ FLATEXAMPLE?!?  Shouldn't that be name AT example DOT com?"
> 
> OTOH, if we use the DNS-style name as username, we introduce an even
> more complex naming scheme on the commandline, with additional dots.
> I'm not sure how useful that is.

Also, chown just occured to me.  Think `chown user.group file' with the
username containing dots.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat