Re: 'git diff' against files outside a git repo

> On Sun, Sep 26, 2010 at 12:13 AM, Junio C Hamano <gitster@pobox.com> wrote:
>> Avery Pennarun <apenwarr@gmail.com> writes:
>>
>>> Oddly, 'git diff file1 file2' *doesn't* work when file1 and file2 are
>>> in a working tree; git tries to diff something, apparently, but I
>>> don't know what.
>>
>> Heh, I thought you've been using git long enough that you sh/would know
>> that you are comparing the index and the working tree, using "file1" and
>> "file2" as pathspecs.
> 
> Ha, of course.  And I do that all the time, so it's silly that I
> somehow forgot for the duration of that email.
> 
> The real surprise was that this *wasn't* the meaning when I was
> outside a git tree :)