multiple heads containing the same change sets: how to get rid of them?

[Benoit Boissinot]

On 2/9/07, solo turn <soloturn at gmail.com> wrote:
> hi,
>
> why is it possible that mercurial creats multiple heads on pulling in
> changes in the following way, changeset history upwards down:
>
> tip: 4 - 3 - 2 - 1
> other head: 2 - 1
>
> then, on a merge, mercurial tries to merge in the difference from 4 to
> 2, so basically somehow putting in the old staff from 2.
>
> what is the best way to get rid of the head which does not contain a
> changeset not already in tip?

Do you mean the changes are identical, but they hash are different ?
If it's the case, the best solution is to merge + hg revert -r tip + hg commit

regards,

Benoit