Re: clarification of `rev-list --no-walk ^<rev>`?

From: "Junio C Hamano" <redacted>

"Philip Oakley" [off-list ref] writes:

quoted

quoted

    Philip probably has a
confused notion

Hi Junio,

Could you clarify a particular point from here..

The "--no-walk" tells the rev-list machinery "I have only positives;
do not traverse from them AT ALL but just use these positives".
Only under that condition, the order of the positive ends you list
on the command line matters.

What does "--do-walk" do ("Overrides a previous --no-walk"), and when would 
it be applied?

--
Philip