From 17db986586130fd3f5fa7d91d3c67f39b6a0dd14 Mon Sep 17 00:00:00 2001
From: Dimitris Vardoulakis <dimvar@gmail.com>
Date: Sun, 23 Oct 2011 17:38:15 -0400
Subject: [PATCH] Handle empty COMMA nodes coming from narcissus.

---
 lib/cfa2/jscfa.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/cfa2/jscfa.js b/lib/cfa2/jscfa.js
index 2fe3c2a..096b035 100644
--- a/lib/cfa2/jscfa.js
+++ b/lib/cfa2/jscfa.js
@@ -273,8 +273,8 @@ function fixExp(n, funName) {
   }
   else if (nt === HOOK || N_ARY.memq(nt)) {
     // Uncomment this if Narcissus produces empty COMMA nodes.
-    // if (nt === COMMA && ch.length === 0)
-    //   ch.push(new Node(n.tokenizer, {type:TRUE}));
+    if (nt === COMMA && ch.length === 0)
+      ch.push(new Node(n.tokenizer, {type:TRUE}));
     if (nt === ARRAY_INIT) {
       ch.forEach(function(kid, i, ch) {
         if (kid === null) ch[i] = idNode(n.tokenizer, "undefined");