class Thor

def normalize_command_name(meth) #:nodoc:

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

a command or alias.
will determine if a shortened command is an unambiguous substring of
the commands hash. In addition to normalizing aliases, this logic
receives a (possibly nil) command name and returns a name that is in 
def normalize_command_name(meth) #:nodoc:
  return default_command.to_s.tr("-", "_") unless meth
  possibilities = find_command_possibilities(meth)
  raise AmbiguousTaskError, "Ambiguous command #{meth} matches [#{possibilities.join(', ')}]" if possibilities.size > 1
  if possibilities.empty?
    meth ||= default_command
  elsif map[meth]
    meth = map[meth]
  else
    meth = possibilities.first
  end
  meth.to_s.tr("-", "_") # treat foo-bar as foo_bar
end