try:
	from mercurial import ui, hg, revset
except ImportError:
	raise Exception, "Need mercurial >=1.6 for revset!"

def revs(repo, spec, items = None):
	ret = []
	if items == None:
		items = range(len(repo))
	m = revset.match(spec)
	for r in m(repo, items):
		ret += [r]
	return ret

repo = hg.repository(ui.ui(), '.')