tests/test-diff-issue2761.t

wireprotoserver: add version to SSH protocol names (API)

We recently introduced version 2 of the SSH protocol. Like we
did for the peer, we will need to differentiate version 1 and 2
of the server. So, we add version components to the advertised
name of the protocol handler.

Nothing in core looks for the old value. But an extension may.

.. api::

   SSH protocol handler now advertises its name internally as
   "ssh-v1" instead of "ssh."

Differential Revision: https://phab.mercurial-scm.org/D2092

Test issue2761

  $ hg init

  $ touch to-be-deleted
  $ hg add
  adding to-be-deleted
  $ hg ci -m first
  $ echo a > to-be-deleted
  $ hg ci -m second
  $ rm to-be-deleted
  $ hg diff -r 0

Same issue, different code path

  $ hg up -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ touch does-not-exist-in-1
  $ hg add
  adding does-not-exist-in-1
  $ hg ci -m third
  $ rm does-not-exist-in-1
  $ hg diff -r 1