Thue
::=
With a newline at the end
The thue language relies on defining rulesets and a ::=
denotes the end of the ruleset. It is impossible to do ANYTHING in thue without defining rules that do it, so regardless of what you put after the ::=
, nothing can happen.
Alternative answer
A::=
B::=
C::=
D::=
E::=
F::=
G::=
H::=
(and so on for the every character in all of Unicode including those before the A
character and non-printable characters). This requires the command-line option -r
.