Algol 68 is God-tier

Hey /prog/, can your toy language do this?
MODE P = PROC (P) P;
P i = (P x) P : x;
P v = (P x) P : v;
P k = (P x) P : ((P x, y) P: x)(x, );
P s = (P x) P : ((P x, y) P: ((P x, y, z) P: x(z)(y(z)))(x, y, ))(x, );
P succ = s(s(k(s))(k));
PROC side effect = (PROC VOID f) P : ((PROC VOID f, P x) P : (f; x))(f, );
PROC church = (INT n) P : (P f := k(i); TO n DO f := s(s(k(s))(k))(f) OD; f);
PROC int = (P f) INT : (INT n := 0; f((P x) P : (n +:= 1; i))(i); n);
OP + = (P x, y) P : ((P x, y, z) P : ((P x, y, z, w) P : x(z)(y(z)(w)))(x, y, z, ))(x, y, );
succ(church(10))(side effect(VOID : print(("Hello, world!", new line))))(i);
print(int(succ(church(100) + church(20))))

>>3
I like how he uses Lisp as an example for how languages shouldn't be, and two paragraphs later suggests that code should be stored in files as some data structure.

If we switch to using something other than text files, say XML or JSON or maybe a database, then many interesting things become possible. The IDE doesn't have to do a crappy job of divining the structure of your code. The structure is already saved.
XML
What a faggot.