comparison tests/test-up-local-change.t @ 44162:baf3fe2977cc

copies: move early return in mergecopies() earlier

It wasn't obvious that the early return happened only when there are
no copies. That is the case, however, because if `fullcopy` is empty,
then so is `copies1` and `copies2`, and then so is `inversecopies1`
and `inversecopies2`, and then so is `allsources`, and then so is
`copy`, `diverge` and `renamedelete`.

By moving the early return earlier, we also avoid calculating the set
of added files from the base to each side.

Differential Revision: https://phab.mercurial-scm.org/D7975

44161:d7622fdec3b5

  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg --debug up
    unmatched files in other:
     b
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: c19d34741b0a, local: c19d34741b0a+, remote: 1e71731e6fbb
   preserving a for resolve of a
   b: remote created -> g

  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg --debug up
    unmatched files in other:
     b
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: c19d34741b0a, local: c19d34741b0a+, remote: 1e71731e6fbb
   preserving a for resolve of a
   b: remote created -> g

44162:baf3fe2977cc

  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg --debug up
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: c19d34741b0a, local: c19d34741b0a+, remote: 1e71731e6fbb
   preserving a for resolve of a
   b: remote created -> g

  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     1
  
  $ hg --debug up
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: c19d34741b0a, local: c19d34741b0a+, remote: 1e71731e6fbb
   preserving a for resolve of a
   b: remote created -> g