implement expression handling further

+ Add some notes about returning functions that I started thinking about
  as a result of the fib example

1 files changed, 1 insertions, 0 deletions

diff --git a/include/fwd/ast.h b/include/fwd/ast.h
index 909137d..c124ac1 100644
--- a/include/fwd/ast.h
+++ b/include/fwd/ast.h
@@ -166,6 +166,7 @@ static inline bool is_binop(struct ast *x)
 static inline bool is_unop(struct ast *x)
 {
 	switch (x->k) {
+	case AST_LNOT:
 	case AST_NOT:
 	case AST_NEG:
 		return true;