.arcconfig

py3: byte-prefix sanitisation regexes in phabricator.py

So it doesn't die with "TypeError: cannot use a string pattern on a bytes-like
object".

Differential Revision: https://phab.mercurial-scm.org/D6863

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