Martin von Zweigbergk <martinvonz@google.com> [Fri, 13 Mar 2020 12:16:20 -0700] rev 44575
fix: mark -r as advanced
See the previous patch for reasoning. I planned to even mark it
deprecated, but someone (timeless?) on the #mercurial IRC channel said
they sometimes wanted to use `-r` with its existing semantics.
Differential Revision: https://phab.mercurial-scm.org/D8288