Re: [GSoC][PATCH v4] Make options that expect object ids less chatty if id is invalid

[Junio C Hamano <gitster@pobox.com>]

Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com> writes:

> Usually, the usage should be shown only if the user does not know what
> options are available. If the user specifies an invalid value, the user
> is already aware of the available options. In this case, there is no
> point in displaying the usage anymore.
>
> This patch applies to "git tag --contains", "git branch --contains",
> "git branch --points-at", "git for-each-ref --contains" and many more.
>
> Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
> ---

I notice that this version changes the way the case where an
unbiguous long option is given, compared to the previous one is
handled.  And I recall that that single case is what I happened to
have noticed during my review of the previous one, in which I was
not trying to be exhausitive.  

I kind of find it surprising that the one single case I happened to
have noticed is the only one that needed special treatment.  Did you
go though all the codepath and made sure that the ones that still
return -1 (not -2 and not -3) to parse_options_step() are all OK (in
other words, I was just lucky) or does this version change only the
"ambiguous" case, simply because that was the only one I noticed in
my review (in other words, this may still not be sufficient)?

Just double checking.

The changes to existing tests have become a lot less noisy, compared
to the previous one, which is probably a good thing.

Thanks.