+def find_command(command_name):
+ """Try to find a command by name or abbreviation."""
+
+ # lowercase the command
+ command_name = command_name.lower()
+
+ command = None
+ if command_name in universe.groups["command"]:
+ # the command matches a command word for which we have data
+ command = universe.groups["command"][command_name]
+ else:
+ for candidate in sorted(universe.groups["command"]):
+ if candidate.startswith(command_name) and not universe.groups[
+ "command"][candidate].get("administrative"):
+ # the command matches the start of a command word and is not
+ # restricted to administrators
+ command = universe.groups["command"][candidate]
+ break
+ return command
+
+