diff --git a/lib/pithy.js b/lib/pithy.js
index 9371664..0143440 100644
--- a/lib/pithy.js
+++ b/lib/pithy.js
@@ -159,9 +159,19 @@
     function stringifyContents(contents) {
         var str = '';
         if (contents) {
+            if (!isArray(contents)) {
+                contents = [contents];
+            }
             for (var i = 0, len = contents.length; i < len; i++) {
                 var c = contents[i];
-                str += isArray(c) ? stringifyContents(c): exports.escape(c);
+                if (isArray(c)) {
+                    c = stringifyContents(c);
+                } else if (typeof c == 'function') {
+                    c = stringifyContents(c());
+                } else {
+                    c = exports.escape(c);
+                }
+                str += c;
             }
         }
         return str;