;; Fennel, being a Lisp, provides a way to define macros for new syntax.
;; The "`" and "," characters are used to construct a template for the macro.
(macro if2 [cond1 cond2 both first second none]
  `(if ,cond1
     (if ,cond2 ,both ,first)
     (if ,cond2 ,second ,none)))

(fn test-if2 [x y]
  (if2 x y
    (print "both")
    (print "first")
    (print "second")
    (print "none")))

(test-if2 true true)   ;"both"
(test-if2 true false)  ;"first"
(test-if2 false true)  ;"second"
(test-if2 false false) ;"none"