backout: deprecate/hide support for backing out merges
This has never worked usefully:
- it can't undo a completely unwanted merge, as it leaves the merge in the DAG
- it can't undo a faulty merge as that means doing a merge correctly,
not simply reverting to one or the other parent
Both of these kinds of merge also require coordinated action among
developers to avoid the bad merge continuing to affect future merges,
so we should stop pretending that backout is of any help here.
As backing out a merge now requires a hidden option, it can't be done
by accident, but will continue to 'work' for anyone who's already
dependent on --parent for some unknown reason.
$ "$TESTDIR/hghave" inotify || exit 80
$ hg init
$ touch a
$ mkdir dir
$ touch dir/b
$ touch dir/c
$ echo "[extensions]" >> $HGRCPATH
$ echo "inotify=" >> $HGRCPATH
$ hg add dir/c
inserve
$ hg inserve -d --pid-file=hg.pid 2>&1
$ cat hg.pid >> "$DAEMON_PIDS"
$ hg st
A dir/c
? a
? dir/b
? hg.pid
moving dir out
$ mv dir ../tmp-test-inotify-issue1542
status
$ hg st
! dir/c
? a
? hg.pid
$ sleep 1
Are we able to kill the service? if not, the service died on some error
$ kill `cat hg.pid`