Re: [PATCH v2 7/8] alias_lookup(): optionally return top-level directory

> > Two optional cleanups here:
> > 
> >   1. We don't need to call config_key_is_valid when using a callback. We
> >      only needed that to prevent the configset machinery from issuing a
> >      warning. It does save us reading the config entirely when the
> >      program name is syntactically invalid as an alias, but that's a
> >      pretty rare case.
> 
> It may be a pretty rare case, or it may not be. I do not want to think
> hard about this, so I just wanted to keep that test.
> 
> But since you suggested it, I will simply blame all the fallout (if any)
> on you.
> 
> ;-)