rebasing my bookmark on top of another bookmark in mercurial

Question

I have a bookmark named X and a bookmark named Y. I would like to rebase Y on top of X. Basically I would like a stacked diff with Y on top of X and that Y parent is X.

Answer 1

When you start with

o-o-B-1-2-X
     \-3-4-Y

you need hg rebase -b Y -d X to transform the history into

o-o-B-1-2-X-3'-4'-Y'

Answer 2

should be

hg rebase -b X -d Y

where X is the base and Y is the destination