D7177: rebase: introduce optional parent mapping

[joerg.sonnenberger (Joerg Sonnenberger)]

joerg.sonnenberger added a comment.


  From the VC call today: The use case can be addressed by marking parents as to-be-preserved, so that for merge commits rebase can decide on the parent link is should operate on. It covers a general DAG and is somewhat easier to use in terms of UX than the parentmap, but can provide the same functionality with a multi-step rebase.

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7177/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7177

To: joerg.sonnenberger, martinvonz, #hg-reviewers, baymax
Cc: mercurial-patches, marmoute, mercurial-devel