class Thor

def normalize_task_name(meth) #:nodoc:

:nodoc:
into +animal_prison+.
+normalize_task_name+ also converts names like +animal-prison+

a task or alias.
will determine if a shortened command is an unambiguous prefix of
the tasks hash. In addition to normalizing aliases, this logic
receives a (possibly nil) task name and returns a name that is in 
def normalize_task_name(meth) #:nodoc:
  return default_task.to_s.gsub('-', '_') unless meth
  possibilities = find_task_possibilities(meth)
  if possibilities.size > 1
    raise ArgumentError, "Ambiguous task #{meth} matches [#{possibilities.join(', ')}]"
  elsif possibilities.size < 1
    meth = meth || default_task
  elsif map[meth]
    meth = map[meth]
  else
    meth = possibilities.first
  end
  meth.to_s.gsub('-','_') # treat foo-bar as foo_bar
end