Re: rev-parse: -- is sometimes a flag and sometimes an arg?

From: brian m. carlson <sandals@crustytoothpaste.net>
Date: Aug 23, 2022, 00:51 UTC
Message-ID: <YwQki4nAEOp4wvv9@tapette.crustytoothpaste.net>
In-Reply-To: <xmqqzgfyh0vj.fsf@gitster.g>

On 2022-08-21 at 00:54:40, Junio C Hamano wrote:

Show 11 quoted lines

> Tim Hockin <thockin@google.com> writes:
> 
> > Sorry, I assumed it was clear, but that was dumb of me.
> >
> > I have a string - might be a tag name, might be a branch name, might
> > be a SHA (complete or partial).  I want to resolve that into a
> > canonical SHA.
> 
> "git rev-parse --verify string" would insist that 'string' is an
> object name and show it as an object name to the standard output, or
> gives an error message and exits with a non-zero status.

Note that this will print a full hex object ID whether it exists in the repo or not if one is given (for example, the all-zeros object ID). If you want to verify that the object exists, write this:

git rev-parse --verify string^{object}

-- 
brian m. carlson (he/him or they/them)
Toronto, Ontario, CA