On 04/27/2013 04:24 AM, shawn wilson wrote:
> On Fri, Apr 26, 2013 at 8:22 PM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
>
>> * There was no good way to ask "I have a random string that came from
>> outside world. I want to turn it into a 40-hex object name while
>> making sure such an object exists". A new peeling suffix ^{object}
>> can be used for that purpose, together with "rev-parse --verify".
>>
>
> What does this mean / what is the reason behind this? I can only think
> it might be useful in a test suite to make sure git isn't doing
> anything stupid with hashes...?
The topic is discussed here:
http://git.661346.n2.nabble.com/Bug-in-quot-git-rev-parse-verify-quot-td7580929.html
As discussed in the thread, when verifying that an argument names an
existing object, it is usually also appropriate to verify that the named
object is of a particular type (or can be converted to a particular
type), which could already be done with syntax like
"$userstring^{commit}". But if, for example, you want to avoid
unwrapping tags but also want to verify that the named object really
exists, "$userstring^{object}" now provides a way.
And what do you have against test suites? :-)
Michael
--
Michael Haggerty
mhagger@xxxxxxxxxxxx
http://softwareswirl.blogspot.com/
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