index = int(name[len(arg.name):])
args[arg.name][index] = value
for arg in command.arguments:
+ if arg.name not in args:
+ continue # undisplayed argument, e.g. 'driver' types.
count = arg.count
if hasattr(arg, '_display_count'): # support HACK in props_from_argument()
count = arg._display_count