[:arity-error [try car [macroexpand '[return 1 2 3]]]]
[:arity-error [try car [macroexpand '[if 1 2 3 4]]]]
[:arity-error [try car [macroexpand '[def 1 2 3]]]]
[:arity-error [try car [macroexpand '[set! 1 2 3]]]]
[8 [constant-fold [macroexpand '[+ 1 1 [* 2 3]]]]]
[21 [compile/for :none '[+ 1 2 3 4 5 6]]]
[4 [compile/for :none '[do 1 2 3 4]]]
