I think this is good for 1.5.4. I am not sure about the
"assuming HEAD" one. Personally I am not very fond of the
idiot-proofing, but there may be many idiots around here, so...
I see you applied both this patch _and_
"filter-branch: assume HEAD if no revision supplied"
The latter patch _does_ make the revision arg optional, so this
"filter-branch docs" patch is unnecessary.
-brandon