tests/test-commit-unresolved.t

tests: add helper script for processing doctests read from stdin

Writes stdin to a temp file and doctests it.

In the future we might want to spare the temp file and directly call into
doctest.

Also, with some tweaking it seems possible to adjust the line numbers reported
in an error report so they match the ones in the original file.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "graphlog=" >> $HGRCPATH

  $ addcommit () {
  >     echo $1 > $1
  >     hg add $1
  >     hg commit -d "${2} 0" -m $1
  > }

  $ commit () {
  >     hg commit -d "${2} 0" -m $1
  > }

  $ hg init a
  $ cd a
  $ addcommit "A" 0
  $ addcommit "B" 1
  $ echo "C" >> A
  $ commit "C" 2

  $ hg update -C 0
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo "D" >> A
  $ commit "D" 3
  created new head

Merging a conflict araises

  $ hg merge
  merging A
  warning: conflicts during merge.
  merging A failed!
  1 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
  [1]

Correct the conflict without marking the file as resolved

  $ echo "ABCD" > A
  $ hg commit -m "Merged"
  abort: unresolved merge conflicts (see hg help resolve)
  [255]

Mark the conflict as resolved and commit

  $ hg resolve -m A
  $ hg commit -m "Merged"