[Differential] [Updated] D21: rebase: rewrite defineparents

[quark (Jun Wu)]

quark marked an inline comment as done.
quark added inline comments.

INLINE COMMENTS

> durin42 wrote in rebase.py:923
> How did C' end up in a separate subgraph? I thought it was moving to F?
> 
> (I suspect this is also some multi-dest stuff...)

Good catch! Side effect of split again. Updated the comment.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D21

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To: quark, durin42, #hg-reviewers
Cc: durin42, mercurial-devel