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.
import os
from mercurial import ui, commands, extensions
ignore = set(['highlight', 'inotify', 'win32text'])
if os.name != 'nt':
ignore.add('win32mbcs')
disabled = [ext for ext in extensions.disabled().keys() if ext not in ignore]
hgrc = open(os.environ["HGRCPATH"], 'w')
hgrc.write('[extensions]\n')
for ext in disabled:
hgrc.write(ext + '=\n')
hgrc.close()
u = ui.ui()
extensions.loadall(u)
globalshort = set()
globallong = set()
for option in commands.globalopts:
option[0] and globalshort.add(option[0])
option[1] and globallong.add(option[1])
for cmd, entry in commands.table.iteritems():
seenshort = globalshort.copy()
seenlong = globallong.copy()
for option in entry[1]:
if (option[0] and option[0] in seenshort) or \
(option[1] and option[1] in seenlong):
print "command '" + cmd + "' has duplicate option " + str(option)
seenshort.add(option[0])
seenlong.add(option[1])