view .arcconfig @ 36685:2a258985ffeb

revsetlang: add a hint for more useful parse errors

This logic is largely based on the similar logic added to template error
messages in D2608 and D2609, but with a few tweaks based on how revsets
actually work.

Differential Revision: https://phab.mercurial-scm.org/D2619

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