Subject: Re: [PATCH] git-p4: format-patch to diff-tree change breaks binary patches

From: tolga ceylan <[email-masked]>
Date: Sat, 26 Apr 2014 14:12:24 -0700

Yes, when git-p4 runs git-apply to test the patch, this fails
due to abbreviated blob object names. I think git-apply requires
full object names for binary patches.

On 04/26/2014 05:43 AM, Pete Wyckoff wrote:
> [email-masked] wrote on Thu, 24 Apr 2014 21:46 -0700:
>> When applying binary patches a full index is required. format-patch
>> already handles this, but diff-tree needs '--full-index' argument
>> to always output full index.
>>
>> Signed-off-by: Tolga Ceylan <[email-masked]>
>> ---
>>   git-p4.py |    2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/git-p4.py b/git-p4.py
>> index cdfa2df..4ee6739 100755
>> --- a/git-p4.py
>> +++ b/git-p4.py
>> @@ -1311,7 +1311,7 @@ class P4Submit(Command, P4UserMap):
>>               else:
>>                   die("unknown modifier %s for %s" % (modifier, path))
>>
>> -        diffcmd = "git diff-tree -p \"%s\"" % (id)
>> +        diffcmd = "git diff-tree --full-index -p \"%s\"" % (id)
>>           patchcmd = diffcmd + " | git apply "
>>           tryPatchCmd = patchcmd + "--check -"
>>           applyPatchCmd = patchcmd + "--check --apply -"
>> --
>
> This looks like a straightforward change, but can you give a
> bit more background on why a full index is required?  Do you
> mean that "git apply" will reject a patch with abbreviated
> blob object names?
>
> 		-- Pete
>