comparison tests/test-backout.t @ 46811:5a0b930cfb3e

commit: get info from mergestate whether a file was merged or not

While commiting a merge, the commit code does not know whether a file was merged
during `hg merge` or not. This leads the commit code to look for filelog
ancestor to choose parents of new filelog created on merge commit.
This leads to wrong results in some cases as demonstrated by previous patch.

From this patch, we start storing information about merged files in mergestate
in stateextras and then use that on commit to detect whether we need to set two
parents or not.

Differential Revision: https://phab.mercurial-scm.org/D10149

46809:56d441256e82

  file: foo (state "u")
    local path: foo (hash 0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33, flags "")
    ancestor path: foo (node f89532f44c247a0e993d63e3a734dd781ab04708)
    other path: foo (node f50039b486d6fa1a90ae51778388cad161f425ee)
    extra: ancestorlinknode = 91360952243723bd5b1138d5f26bd8c8564cb553
  $ mv .hg/merge/state2 .hg/merge/state2-moved
  $ hg debugmergestate -v
  no version 2 merge state
  local: b71750c4b0fdf719734971e3ef90dbeab5919a2d
  other: b71750c4b0fdf719734971e3ef90dbeab5919a2d

46811:5a0b930cfb3e

  file: foo (state "u")
    local path: foo (hash 0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33, flags "")
    ancestor path: foo (node f89532f44c247a0e993d63e3a734dd781ab04708)
    other path: foo (node f50039b486d6fa1a90ae51778388cad161f425ee)
    extra: ancestorlinknode = 91360952243723bd5b1138d5f26bd8c8564cb553
    extra: merged = yes
  $ mv .hg/merge/state2 .hg/merge/state2-moved
  $ hg debugmergestate -v
  no version 2 merge state
  local: b71750c4b0fdf719734971e3ef90dbeab5919a2d
  other: b71750c4b0fdf719734971e3ef90dbeab5919a2d