re2: make errors quiet By default, the re2 library will output error on its own instead of keeping the error in an exception. This make re2 printing spurious error before fallback to the stdlib remodule that may accept the pattern or also fails to parse it and raise a proper error that will be handled by Mercurial. So we also pass an Option object that changes this default.

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