tests/test-mq-qsave.t

hook: raise a more specialized HookAbort exception when a hook fails

We need to gracefully handle some aborts for pushkey, especially
because it leads to a user-facing crash over the wireprotocols. So we
need a more specialized exception to catch.

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "mq=" >> $HGRCPATH

  $ hg init

  $ echo 'base' > base
  $ hg ci -Ambase
  adding base

  $ hg qnew -mmqbase mqbase

  $ hg qsave
  $ hg qrestore 2
  restoring status: hg patches saved state