.arcconfig

py3: silence "bad escape" warning emitted by re.sub()

Since we pass user strings directly to re.sub(), we can't avoid this warning
without a BC.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}