fix emitting of 'message' event for fetch responses with no body literals

lib/imap.js

@@ -326,12 +326,13 @@ ImapConnection.prototype.connect = function(loginCb) {
                   bodies = ['', null];
               }
 
+              var shouldEmit;
               for (body = 0, lenb = bodies.length; body < lenb; body += 2) {
                 fetches = requests[0].fetchers[bodies[body]];
                 val = bodies[body + 1];
                 for (var i=0, len=fetches.length; i<len; ++i) {
                   parsed = undefined;
-                  if (!fetches[i]._msg)
+                  if (shouldEmit = (!fetches[i]._msg))
                     fetches[i]._msg = new ImapMessage();
 
                   // copy message properties (uid, date, flags, etc)
@@ -339,15 +340,18 @@ ImapConnection.prototype.connect = function(loginCb) {
                        k < lenk; ++k)
                     fetches[i]._msg[keys[k]] = details[keys[k]];
 
+                  if (shouldEmit)
+                    fetches[i].emit('message', fetches[i]._msg);
+
                   if (typeof val === 'number') {
                     // we streamed a body, e.g. {3}\r\nfoo
                   } else {
                     // no body was streamed
                     if (typeof val === 'string') {
-                      // a body was given as a non-literal string, e.g. "foo"
+                      // a body was given as a quoted, non-literal string,
+                      // e.g. "foo"
                       if (RE_ISHEADER.test(bodies[body])) {
                         var parsed, data, headers;
-                        //for (f = 0, lenf = fetches.length; f < lenf; ++f) {
                         if (fetches[i]._parse) {
                           if (parsed === undefined)
                             parsed = parsers.parseHeaders(val);
@@ -358,15 +362,10 @@ ImapConnection.prototype.connect = function(loginCb) {
                           headers = data;
                         }
                         fetches[i]._msg.emit('headers', headers);
-                        //}
                       } else {
                         var data = new Buffer(val, 'binary');
-                        //for (f = 0, lenf = fetches.length; f < lenf; ++f)
                         fetches[i]._msg.emit('data', data);
                       }
-                    } else if (val === null) {
-                      //for (f = 0, lenf = fetches.length; f < lenf; ++f)
-                      fetches[i].emit('message', fetches[i]._msg);
                     }
                   }
                 }