[zwkrt]

Hyphens and question marks in identifiers is actually the biggest feature I wish other languages would steal from Lisp. It does help that lisp doesn’t suffer from the “is it an infix operator?” parsing problem, which exists for both programmatic and meat-based compilers.

[DonHopkins]

Then you'd love FORTH. Why limit yourself to hyphens and question marks? The only character you can't use in a FORTH identifier is space.

    FORTH ?KNOW IF HONK ELSE FORTH LEARN THEN

    : C(-; LICK SMILE NOSE WINK ;

    \ FORTH PAPER TAPE PUNCHER:

    : PT# ( L --- L/2 )
      DUP 1 AND IF 
        ASCII @ 
      ELSE BL THEN
      HOLD
      2/
    ;

    : PT. ( N --- )
      <# PT# PT# PT# 
         ASCII . HOLD
         PT# PT# PT# PT#
      #> TYPE
    ;

    : CUT
      ." -----------" CR
    ;

    : PTAPE
      CUT
      BEGIN
        KEY ?DUP WHILE
        DUP ." |" PT. ." |"  SPACE EMIT CR
      REPEAT
      CUT
    ;