Abort when no username is found

[Matt Mackall]

On Tue, 2009-10-20 at 17:01 -0400, Greg Ward wrote:
> On Mon, Oct 19, 2009 at 6:38 PM, Martin Geisler <mg at lazybytes.net> wrote:
> > I've just pushed c63c336ee2f7 which makes Mercurial abort when you make
> > a commit without having configured a username. The message you get is:
> 
> Excellent!
> 
> >  Please specify a username.
> >
> > How can we improve this message? We need to include information about
> > how one can specify the username. We talked on IRC about making a new
> > help topic, I imagine it could be called 'hgrc'. That would let us write
> >
> >  please specify a username, see "hg help hgrc"
> 
> You can't just jam two sentences together with a comma in English!
> Acceptable alternatives:
> 
>   please specify a username; see "hg help hgrc"
>   please specify a username: see "hg help hgrc"
>   please specify a username (see "hg help hgrc")
> 
> Also: how about "hg help config[uration]" instead?  "hgrc" is very
> much Unix-speak and probably not at all clear to anyone who has not
> been using Unix for years.  It's OK for a man page, but I think help
> topics should be a bit less opaque.
> 
> And, for the error message itself: what about "no username supplied".
> "Please specify" is so, I dunno, touchy-feely.  ;-)  I mean, the error
> will be prefixed with "abort: ", right?  IMHO
> 
>   abort: no username supplied (see "hg help configuration")

Looks fine to me, though I'd lean toward calling the config section
'config'.

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