Re: [PATCHv1 3/3] git-p4: fixing --changes-block-size handling

The implementation looks fine, especially given the test cases that
back it up. I am only curious why the block size is set to a default
of None. To put it as contcretely as possible: is there any expected
configuration where None would work but 500 would not? We know there
are many cases of the other way around, and those cases are going to
send users to StackOverflow to find the right workaround.

Dropping the option would also simplify the code in several places.
The complex logic around get_another_block could be removed, and
instead there could be a loop from start to mostRecentCommit by
block_size. Several places that check "if not block_size" could just
choose the other branch.

Lex Spoon