view .arcconfig @ 39465:4062bbb1d10f

narrow: use util.readfile() and improve error message using --narrowspec

This patch improves the error message and uses util.readfile() for reading
narrowspecs file while cloning.

Differential Revision: https://phab.mercurial-scm.org/D4462

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