Fix some minor bugs before launch.

lib/wheat.js

@@ -62,7 +62,7 @@ var stringToBuffer;
     "Saturday", "Sunday"];
   var monthsInYear = ["January", "February", "March", "April", "May", "June",
     "July", "August", "September", "October", "November", "December"];
-  var aMonths = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", 
+  var aMonths = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun",
                           "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
   var aDays = new Array( "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 
@@ -262,6 +262,7 @@ var Data;
 
   function sandbox(snippet) {
     snippet.result = "";
+    snippet.output = "";
     var overrides = {
       sys: {
         puts: function fakePuts() {
@@ -470,11 +471,13 @@ var Data;
           activateSnippets(version, article.snippets, canExecute, this.parallel());
         },
         function finish(err, articles, log, snippets) {
-          
+
           if (err) { callback(err); return; }
           article.log = log;
           article.snippets = snippets;
-          article.lastUpdated = log[Object.keys(log)[0]].date;
+          if (Object.keys(log).length > 0) {
+            article.lastUpdated = log[Object.keys(log)[0]].date;
+          }
 
           // Find articles with the same author
           var related = article.related = [];
@@ -508,7 +511,7 @@ var Data;
         callback
       );
     }),
-    
+
     fullArticles: Git.safe(function fullArticles(version, callback) {
       Step(
         function getListOfArticles() {
@@ -526,13 +529,13 @@ var Data;
           });
         },
         function sortAndFinish(err) {
-          
+
           if (err) { callback(err); return; }
           var articles = Array.prototype.slice.call(arguments, 1);
           articles.sort(function dateSorter(a, b) {
             return (Date.parse(b.date)) - (Date.parse(a.date));
           });
-          
+
           return articles;
         },
         callback
@@ -878,4 +881,11 @@ var Wheat = module.exports = function Wheat(repo, port, host) {
   addRoute(/^\/()(.+\.[a-z]{2,4})$/, Renderers.staticFile);
 
   server.listen(port, host);
+
+  // Keep the server from crashing
+  process.nextTick(function () {
+    process.addListener("uncaughtException", function (err) {
+      sys.error(err.stack || err);
+    });
+  });
 };