Make the savetrail plugin work again

core/modules/startup/startup.js

@@ -131,6 +131,7 @@ exports.startup = function() {
 			wiki: $tw.wiki,
 			syncadaptorClass: syncadaptorClass
 		});
+		$tw.syncadaptor = $tw.syncer.syncadaptor; // For backwards compatibility
 	} 
 	// Setup the saver handler
 	$tw.saverHandler = new $tw.SaverHandler({

core/modules/syncer.js

@@ -67,7 +67,6 @@ function Syncer(options) {
 		wiki: $tw.wiki,
 		logger: this.logger
 	});
-	$tw.syncadaptor = this.syncadaptor; // For backwards compatibility
 	// Listen out for changes to tiddlers
 	this.wiki.addEventListener("change",function(changes) {
 		// Filter the changes to just include ones that are being synced

editions/prerelease/tiddlywiki.info

@@ -10,6 +10,7 @@
 		"tiddlywiki/highlight",
 		"tiddlywiki/markdown",
 		"tiddlywiki/bibtex",
+		"tiddlywiki/savetrail",
 		"tiddlywiki/external-attachments",
 		"tiddlywiki/dynaview",
 		"tiddlywiki/codemirror",

plugins/tiddlywiki/savetrail/savetrail.js

@@ -26,10 +26,9 @@ var ENABLE_TIDDLER_TITLE = "$:/config/SaveTrailPlugin/enable",
 exports.startup = function() {
 	$tw.savetrail = $tw.savetrail || {};
 	// Create a syncer to handle autosaving
-	$tw.savetrail.syncadaptor = new SaveTrailSyncAdaptor();
 	$tw.savetrail.syncer = new $tw.Syncer({
 		wiki: $tw.wiki,
-		syncadaptor: $tw.savetrail.syncadaptor,
+		syncadaptorClass: SaveTrailSyncAdaptor,
 		titleSyncFilter: SYNC_DRAFTS_FILTER_TIDDLER_TITLE,
 		logging: false,
 		disableUI: true