view tests/test-dirstate-backup.t @ 38489:626d29c6e987

revset: leverage orset() to flatten ancestor() arguments

This also makes orset() accept an empty argument because nullary ancestor()
call is valid. That's not the case for orset(), but should be okay.

Set up

  $ hg init repo
  $ cd repo

Try to import an empty patch

  $ hg import --no-commit - <<EOF
  > EOF
  applying patch from stdin
  abort: stdin: no diffs found
  [255]

No dirstate backups are left behind

  $ ls .hg/dirstate* | sort
  .hg/dirstate