D6255: copies: calculate mergecopies() based on pathcopies()

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  In https://phab.mercurial-scm.org/D6255#91851, @martinvonz wrote:
  
  > I'll spend a bit more time to see if I can figure out why pathcopies() and mergecopies() walk file ancestor differently. The way mergecopies() does it is faster, so I'l see if I can use that for pathcopies() too. https://phab.mercurial-scm.org/D6274:: can still be queued if anyone has time.
  
  
  I thought I was done with that after finding some bugs in mergecopies(). I thought fixing those would make mergecopies() as slow as pathcopies(), but that still doesn't seem to explain it :( Maybe I'll spend even more time on this tomorrow.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D6255

To: martinvonz, #hg-reviewers
Cc: marmoute, mjpieters, mercurial-devel