.arcconfig

charencode: adjust clang-format enable/disable comments

We're pretty close to being able to let clang-format manage most of
these files.

Differential Revision: https://phab.mercurial-scm.org/D2180

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