-- !!! test `:set args' and `:set prog'
System.Environment.getArgs
print it
System.Environment.getProgName
print it
:set args
System.Environment.getArgs
print it
System.Environment.getProgName
print it
:set args foo bar
System.Environment.getArgs
print it
System.Environment.getProgName
print it
:set prog foo
System.Environment.getArgs
print it
System.Environment.getProgName
print it