view .arcconfig @ 49689:1863584f2fba

scheme: move the drive letter checking in its own function

This help the readability of the main function as is was taking much more room
than the main logic.

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