prettyPrint bools as ints

1 files changed, 1 insertions, 0 deletions

diff --git a/src/runtime.js b/src/runtime.js
index 9b52bbe4..5e3dcdcc 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -322,6 +322,7 @@ var Runtime = {
 
   prettyPrint: function(arg) {
     if (typeof arg == 'undefined') return '!UNDEFINED!';
+    if (typeof arg == 'boolean') arg = arg + 0;
     if (!arg) return arg;
     var index = Runtime.printObjectList.indexOf(arg);
     if (index >= 0) return '<' + arg + '|' + index + '>';