On Wed, Nov 14, 2012 at 09:06:57AM -0800, Jonathan Nieder wrote:

> Jeff King wrote:
> > Internally, we keep track of whether the author or committer
> > ident information was provided by the user, or whether it
> > was implicitly determined by the system. However, there is
> > currently no way for external programs or scripts to get
> > this information
> What are the intended semantics?  If my machine has /etc/mailname
> filled out, is that an implicit identity?  How about if I set the
> If external scripts are going to start using this mechanism, they will
> need answers to these questions to support users that run into
> configuration problems.  A few words on this in the documentation
> could probably help.

The intent is to make git's internal rules (whatever they may be)
available to calling scripts. But I agree those rules should be spelled
out now that they are becoming a more visible interface. I'll update the

> On most machines I have the EMAIL envvar set explicitly, but in the
> recent past I relied on /etc/mailname on some others, so I'm also
> genuinely curious about the use case here (and too lazy to dig it up).

Right now EMAIL is explicit, but `id`@`cat /etc/mailname` is not. I
think changing that would be a separate issue, though (and I'm not sure
whether it is a good idea; my /etc/mailname is not an email address I
would want to use).

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