fix fetch() options a bit and don't default to fetching body structure

README.md

@@ -554,7 +554,7 @@ Valid `options` are:
 
   * **markSeen** - < _boolean_ > - Mark message(s) as read when fetched. **Default:** false
 
-  * **struct** - < _boolean_ > - Fetch the message structure. **Default:** true
+  * **struct** - < _boolean_ > - Fetch the message structure. **Default:** false
 
   * **size** - < _boolean_ > - Fetch the RFC822 size. **Default:** false
 

lib/imap.js

@@ -928,19 +928,14 @@ ImapConnection.prototype._fetch = function(which, uids, options, what, cb) {
 
   var toFetch = '', prefix, extensions, self = this,
       parse = true, headers, key, stream,
-      opts = { markSeen: false, struct: true, size: false },
       fetchers = {};
 
   if (typeof what === 'function') {
     cb = what;
     what = options;
-  } else {
+    options = {};
-    if (options.markSeen)
-      opts.markSeen = true;
-    if (options.size)
-      opts.size = true;
   }
-  prefix = (opts.markSeen ? ' BODY.PEEK[' : ' BODY[');
+  prefix = (options.markSeen ? ' BODY.PEEK[' : ' BODY[');
   if (!Array.isArray(what))
     what = [what];
   for (var i = 0, wp, pprefix, len = what.length; i < len; ++i) {