Re: [PATCH v4] submodule: port subcommand 'set-url' from shell to C

> > Specifically, I would write "!path", not "path == NULL".  I thought
> > a rule for that is in the CodingGuidelines (I didn't double check,
> > though).
>
> I could not find a rule like that in the CodingGuidelines.
> Should I add it?
> https://github.com/git/git/blob/master/Documentation/CodingGuidelines

> > The comparison on argc is to see if we are even allowed to access
> > argv[0] and/or argv[1].  In practice, if what main() got from the
> > outside world in argv[] is passed directly to you, argv[n] would
> > never be NULL as long as n < argc, but there are a few levels of
> > callchain between main() and you (i.e. module_set_url()), so not
> > counting on that would be sensible.
>
> Understood. I will add the NULL check as well.