Ticket #22266: 22266.diff

wp-includes/js/autosave.js

@@ -28 +28 @@
         });
 
         window.onbeforeunload = function(){
-                var mce = typeof(tinymce) != 'undefined' ? tinymce.activeEditor : false, title, content;
+                var isFullscreen = fullscreen && fullscreen.settings.visible,
+                        mce = typeof(tinymce) != 'undefined' ? tinymce.activeEditor : false,
+                        title, content, lastContent;
 
-                if ( mce && !mce.isHidden() ) {
-                        if ( mce.isDirty() )
-                                return autosaveL10n.saveAlert;
+                title = $( isFullscreen ? '#wp-fullscreen-title' : '#title' ).val();
+
+                // Check if the last autosave had the same title.
+                if ( title && 0 !== autosaveLast.indexOf( title ) )
+                        return autosaveL10n.saveAlert;
+
+                lastContent = autosaveLast.slice( title.length );
+
+                // If TinyMCE is active, use the editor's content.
+                if ( mce && ! mce.isHidden() ) {
+                        content = mce.getContent();
+
+                        // If the TinyMCE editor supports `wpautop`, then normalize the
+                        // content by running `pre_wpautop`.
+                        if ( mce.getParam('wpautop', true) && switchEditors ) {
+                                content = switchEditors.pre_wpautop( content );
+                                lastContent = switchEditors.pre_wpautop( lastContent );
+                        }
                 } else {
-                        if ( fullscreen && fullscreen.settings.visible ) {
-                                title = $('#wp-fullscreen-title').val();
-                                content = $("#wp_mce_fullscreen").val();
-                        } else {
-                                title = $('#post #title').val();
-                                content = $('#post #content').val();
-                        }
+                        content = $( isFullscreen ? '#wp_mce_fullscreen' : '#content' ).val();
+                }
 
-                        if ( ( title || content ) && title + content != autosaveLast )
-                                return autosaveL10n.saveAlert;
-                }
+                if ( content !== lastContent )
+                        return autosaveL10n.saveAlert;
         };
 
         $(window).unload( function(e) {