D3896: copies: handle case when both merge cset are not descendant of merge base

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  Pretty sure this was made obsolete by D6255 <https://phab.mercurial-scm.org/D6255>

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D3896/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D3896

To: pulkit, #hg-reviewers, baymax
Cc: martinvonz, spectral, yuja, mercurial-devel