when statement is vehemently similar to the
until statement. It's simply the direct opposite.
Looping until 'condition' is true, the old way.
repeat until not <condition>
Looping until 'condition' is true, the new way.
This syntax is more readable. It's not any faster, but it's the Lua semantic of
do .. while from other languages.
Using Compatibility Mode?
You may need to use
pluto_when instead of