Jeff King <peff@xxxxxxxx> writes:
> On Thu, Mar 28, 2013 at 04:34:19PM +0100, Michael Haggerty wrote:
>
>> Is there a simple way to verify an object name more strictly and convert
>> it to an SHA1? I can only think of solutions that require two commands,
>> like
>>
>> git cat-file -e $ARG && git rev-parse --verify $ARG
>
> Is the rev-parse line doing anything there? If $ARG does not resolve to
> a sha1, then wouldn't cat-file have failed?
>
> -Peff
You could force rev-parse to resolve the input to an existing
object, with something like this:
git rev-parse --verify "$ARG^{}"
It will unwrap a tag, so the output may end up pointing at a object
that is different from $ARG in such a case.
But what is the purpose of turning a random string to a random
40-hex in the first place?
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