.arcconfig

grep: deprecates `--all` flag

As the name "all" is a misnomer for an option that searches on diffs of revisions,
we are moving to diff flag from all, deprecating it in the process.

Differential Revision: https://phab.mercurial-scm.org/D3825

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