--- a/readme.html
+++ b/readme.html
@@ -9,7 +9,7 @@
 <body>
 <h1 id="logo">
 	<a href="https://wordpress.org/"><img alt="WordPress" src="wp-admin/images/wordpress-logo.png" /></a>
-	<br /> Version 4.2.3
+	<br /> Version 4.2.4
 </h1>
 <p style="text-align: center">Semantic Personal Publishing Platform</p>
 
--- a/wp-admin/about.php
+++ b/wp-admin/about.php
@@ -41,7 +41,11 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 </h2>
 
 <div class="changelog point-releases">
-	<h3><?php echo _n( 'Maintenance and Security Release', 'Maintenance and Security Releases', 3 ); ?></h3>
+	<h3><?php echo _n( 'Maintenance and Security Release', 'Maintenance and Security Releases', 4 ); ?></h3>
+	<p><?php printf( _n( '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bug.',
+         '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bugs.', 4 ), '4.2.4', number_format_i18n( 4 ) ); ?>
+		<?php printf( __( 'For more information, see <a href="%s">the release notes</a>.' ), 'http://codex.wordpress.org/Version_4.2.4' ); ?>
+	</p>
 	<p><?php printf( _n( '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bug.',
          '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bugs.', 20 ), '4.2.3', number_format_i18n( 20 ) ); ?>
 		<?php printf( __( 'For more information, see <a href="%s">the release notes</a>.' ), 'http://codex.wordpress.org/Version_4.2.3' ); ?>
--- a/wp-admin/includes/class-wp-upgrader.php
+++ b/wp-admin/includes/class-wp-upgrader.php
@@ -972,11 +972,14 @@ class Plugin_Upgrader extends WP_Upgrader {
 
 		// Check the folder contains at least 1 valid plugin.
 		$plugins_found = false;
-		foreach ( glob( $working_directory . '*.php' ) as $file ) {
-			$info = get_plugin_data($file, false, false);
-			if ( !empty( $info['Name'] ) ) {
-				$plugins_found = true;
-				break;
+		$files = glob( $working_directory . '*.php' );
+		if ( $files ) {
+			foreach ( $files as $file ) {
+				$info = get_plugin_data( $file, false, false );
+				if ( ! empty( $info['Name'] ) ) {
+					$plugins_found = true;
+					break;
+				}
 			}
 		}
 
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -1542,7 +1542,7 @@ function _admin_notice_post_locked() {
 		// Allow plugins to prevent some users overriding the post lock
 		if ( $override ) {
 			?>
-			<a class="button button-primary wp-tab-last" href="<?php echo esc_url( add_query_arg( 'get-post-lock', '1', get_edit_post_link( $post->ID, 'url' ) ) ); ?>"><?php _e('Take over'); ?></a>
+			<a class="button button-primary wp-tab-last" href="<?php echo esc_url( add_query_arg( 'get-post-lock', '1', wp_nonce_url( get_edit_post_link( $post->ID, 'url' ), 'lock-post_' . $post->ID ) ) ); ?>"><?php _e('Take over'); ?></a>
 			<?php
 		}
 
--- a/wp-admin/includes/update-core.php
+++ b/wp-admin/includes/update-core.php
@@ -1249,8 +1249,11 @@ function _upgrade_422_find_genericons_files_in_folder( $directory ) {
 		$files[] = "{$directory}example.html";
 	}
 
-	foreach ( glob( $directory . '*', GLOB_ONLYDIR ) as $dir ) {
-		$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
+	$dirs = glob( $directory . '*', GLOB_ONLYDIR );
+	if ( $dirs ) {
+		foreach ( $dirs as $dir ) {
+			$files = array_merge( $files, _upgrade_422_find_genericons_files_in_folder( $dir ) );
+		}
 	}
 
 	return $files;
--- a/wp-admin/js/nav-menu.js
+++ b/wp-admin/js/nav-menu.js
@@ -492,7 +492,7 @@ var wpNavMenu;
 				title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$s', parentItemName );
 			}
 
-			$this.prop('title', title).html( title );
+			$this.prop('title', title).text( title );
 
 			// Mark this item's accessibility as refreshed
 			$this.data( 'needs_accessibility_refresh', false );
--- a/wp-admin/js/nav-menu.min.js
+++ b/wp-admin/js/nav-menu.min.js
@@ -1 +1 @@
-var wpNavMenu;!function(a){var b;b=wpNavMenu={options:{menuItemDepthPerLevel:30,globalMaxDepth:11},menuList:void 0,targetList:void 0,menusChanged:!1,isRTL:!("undefined"==typeof isRtl||!isRtl),negateIfRTL:"undefined"!=typeof isRtl&&isRtl?-1:1,init:function(){b.menuList=a("#menu-to-edit"),b.targetList=b.menuList,this.jQueryExtensions(),this.attachMenuEditListeners(),this.setupInputWithDefaultTitle(),this.attachQuickSearchListeners(),this.attachThemeLocationsListeners(),this.attachTabsPanelListeners(),this.attachUnsavedChangesListener(),b.menuList.length&&this.initSortables(),menus.oneThemeLocationNoMenus&&a("#posttype-page").addSelectedToMenu(b.addMenuItemToBottom),this.initManageLocations(),this.initAccessibility(),this.initToggles(),this.initPreviewing()},jQueryExtensions:function(){a.fn.extend({menuItemDepth:function(){var a=this.eq(0).css(b.isRTL?"margin-right":"margin-left");return b.pxToDepth(a&&-1!=a.indexOf("px")?a.slice(0,-2):0)},updateDepthClass:function(b,c){return this.each(function(){var d=a(this);c=c||d.menuItemDepth(),a(this).removeClass("menu-item-depth-"+c).addClass("menu-item-depth-"+b)})},shiftDepthClass:function(b){return this.each(function(){var c=a(this),d=c.menuItemDepth();a(this).removeClass("menu-item-depth-"+d).addClass("menu-item-depth-"+(d+b))})},childMenuItems:function(){var b=a();return this.each(function(){for(var c=a(this),d=c.menuItemDepth(),e=c.next();e.length&&e.menuItemDepth()>d;)b=b.add(e),e=e.next()}),b},shiftHorizontally:function(b){return this.each(function(){var c=a(this),d=c.menuItemDepth(),e=d+b;c.moveHorizontally(e,d)})},moveHorizontally:function(b,c){return this.each(function(){var d=a(this),e=d.childMenuItems(),f=b-c,g=d.find(".is-submenu");d.updateDepthClass(b,c).updateParentMenuItemDBId(),e&&e.each(function(){var b=a(this),c=b.menuItemDepth(),d=c+f;b.updateDepthClass(d,c).updateParentMenuItemDBId()}),0===b?g.hide():g.show()})},updateParentMenuItemDBId:function(){return this.each(function(){var b=a(this),c=b.find(".menu-item-data-parent-id"),d=parseInt(b.menuItemDepth(),10),e=d-1,f=b.prevAll(".menu-item-depth-"+e).first();c.val(0===d?0:f.find(".menu-item-data-db-id").val())})},hideAdvancedMenuItemFields:function(){return this.each(function(){var b=a(this);a(".hide-column-tog").not(":checked").each(function(){b.find(".field-"+a(this).val()).addClass("hidden-field")})})},addSelectedToMenu:function(c){return 0===a("#menu-to-edit").length?!1:this.each(function(){var d=a(this),e={},f=d.find(menus.oneThemeLocationNoMenus&&0===d.find(".tabs-panel-active .categorychecklist li input:checked").length?'#page-all li input[type="checkbox"]':".tabs-panel-active .categorychecklist li input:checked"),g=/menu-item\[([^\]]*)/;return c=c||b.addMenuItemToBottom,f.length?(d.find(".spinner").addClass("is-active"),a(f).each(function(){var d=a(this),f=g.exec(d.attr("name")),h="undefined"==typeof f[1]?0:parseInt(f[1],10);this.className&&-1!=this.className.indexOf("add-to-top")&&(c=b.addMenuItemToTop),e[h]=d.closest("li").getItemData("add-menu-item",h)}),void b.addItemToMenu(e,c,function(){f.removeAttr("checked"),d.find(".spinner").removeClass("is-active")})):!1})},getItemData:function(a,b){a=a||"menu-item";var c,d={},e=["menu-item-db-id","menu-item-object-id","menu-item-object","menu-item-parent-id","menu-item-position","menu-item-type","menu-item-title","menu-item-url","menu-item-description","menu-item-attr-title","menu-item-target","menu-item-classes","menu-item-xfn"];return b||"menu-item"!=a||(b=this.find(".menu-item-data-db-id").val()),b?(this.find("input").each(function(){var f;for(c=e.length;c--;)"menu-item"==a?f=e[c]+"["+b+"]":"add-menu-item"==a&&(f="menu-item["+b+"]["+e[c]+"]"),this.name&&f==this.name&&(d[e[c]]=this.value)}),d):d},setItemData:function(b,c,d){return c=c||"menu-item",d||"menu-item"!=c||(d=a(".menu-item-data-db-id",this).val()),d?(this.find("input").each(function(){var e,f=a(this);a.each(b,function(a,b){"menu-item"==c?e=a+"["+d+"]":"add-menu-item"==c&&(e="menu-item["+d+"]["+a+"]"),e==f.attr("name")&&f.val(b)})}),this):this}})},countMenuItems:function(b){return a(".menu-item-depth-"+b).length},moveMenuItem:function(c,d){var e,f,g,h=a("#menu-to-edit li"),i=h.length,j=c.parents("li.menu-item"),k=j.childMenuItems(),l=j.getItemData(),m=parseInt(j.menuItemDepth(),10),n=parseInt(j.index(),10),o=j.next(),p=o.childMenuItems(),q=parseInt(o.menuItemDepth(),10)+1,r=j.prev(),s=parseInt(r.menuItemDepth(),10),t=r.getItemData()["menu-item-db-id"];switch(d){case"up":if(f=n-1,0===n)break;0===f&&0!==m&&j.moveHorizontally(0,m),0!==s&&j.moveHorizontally(s,m),k?(e=j.add(k),e.detach().insertBefore(h.eq(f)).updateParentMenuItemDBId()):j.detach().insertBefore(h.eq(f)).updateParentMenuItemDBId();break;case"down":if(k){if(e=j.add(k),o=h.eq(e.length+n),p=0!==o.childMenuItems().length,p&&(g=parseInt(o.menuItemDepth(),10)+1,j.moveHorizontally(g,m)),i===n+e.length)break;e.detach().insertAfter(h.eq(n+e.length)).updateParentMenuItemDBId()}else{if(0!==p.length&&j.moveHorizontally(q,m),i===n+1)break;j.detach().insertAfter(h.eq(n+1)).updateParentMenuItemDBId()}break;case"top":if(0===n)break;k?(e=j.add(k),e.detach().insertBefore(h.eq(0)).updateParentMenuItemDBId()):j.detach().insertBefore(h.eq(0)).updateParentMenuItemDBId();break;case"left":if(0===m)break;j.shiftHorizontally(-1);break;case"right":if(0===n)break;if(l["menu-item-parent-id"]===t)break;j.shiftHorizontally(1)}c.focus(),b.registerChange(),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},initAccessibility:function(){var c=a("#menu-to-edit");b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility(),c.on("mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility",".menu-item",function(){b.refreshAdvancedAccessibilityOfItem(a(this).find(".item-edit"))}),c.on("click",".item-edit",function(){b.refreshAdvancedAccessibilityOfItem(a(this))}),c.on("click",".menus-move",function(c){var d=a(this),e=d.data("dir");"undefined"!=typeof e&&b.moveMenuItem(a(this).parents("li.menu-item").find("a.item-edit"),e),c.preventDefault()})},refreshAdvancedAccessibilityOfItem:function(b){if(!0===a(b).data("needs_accessibility_refresh")){var c,d,e,f,g,h,i,j,k,l=a(b),m=l.closest("li.menu-item").first(),n=m.menuItemDepth(),o=0===n,p=l.closest(".menu-item-handle").find(".menu-item-title").text(),q=parseInt(m.index(),10),r=o?n:parseInt(n-1,10),s=m.prevAll(".menu-item-depth-"+r).first().find(".menu-item-title").text(),t=m.prevAll(".menu-item-depth-"+n).first().find(".menu-item-title").text(),u=a("#menu-to-edit li").length,v=m.nextAll(".menu-item-depth-"+n).length;m.find(".field-move").toggle(u>1),0!==q&&(c=m.find(".menus-move-up"),c.prop("title",menus.moveUp).css("display","inline")),0!==q&&o&&(c=m.find(".menus-move-top"),c.prop("title",menus.moveToTop).css("display","inline")),q+1!==u&&0!==q&&(c=m.find(".menus-move-down"),c.prop("title",menus.moveDown).css("display","inline")),0===q&&0!==v&&(c=m.find(".menus-move-down"),c.prop("title",menus.moveDown).css("display","inline")),o||(c=m.find(".menus-move-left"),d=menus.outFrom.replace("%s",s),c.prop("title",menus.moveOutFrom.replace("%s",s)).text(d).css("display","inline")),0!==q&&m.find(".menu-item-data-parent-id").val()!==m.prev().find(".menu-item-data-db-id").val()&&(c=m.find(".menus-move-right"),d=menus.under.replace("%s",t),c.prop("title",menus.moveUnder.replace("%s",t)).text(d).css("display","inline")),o?(e=a(".menu-item-depth-0"),f=e.index(m)+1,u=e.length,g=menus.menuFocus.replace("%1$s",p).replace("%2$d",f).replace("%3$d",u)):(h=m.prevAll(".menu-item-depth-"+parseInt(n-1,10)).first(),i=h.find(".menu-item-data-db-id").val(),j=h.find(".menu-item-title").text(),k=a('.menu-item .menu-item-data-parent-id[value="'+i+'"]'),f=a(k.parents(".menu-item").get().reverse()).index(m)+1,g=menus.subMenuFocus.replace("%1$s",p).replace("%2$d",f).replace("%3$s",j)),l.prop("title",g).html(g),l.data("needs_accessibility_refresh",!1)}},refreshAdvancedAccessibility:function(){a(".menu-item-settings .field-move a").hide(),a(".item-edit").data("needs_accessibility_refresh",!0),a(".menu-item-edit-active .item-edit").each(function(){b.refreshAdvancedAccessibilityOfItem(this)})},refreshKeyboardAccessibility:function(){a(".item-edit").off("focus").on("focus",function(){a(this).off("keydown").on("keydown",function(c){var d,e=a(this),f=e.parents("li.menu-item"),g=f.getItemData();if((37==c.which||38==c.which||39==c.which||40==c.which)&&(e.off("keydown"),1!==a("#menu-to-edit li").length)){switch(d={38:"up",40:"down",37:"left",39:"right"},a("body").hasClass("rtl")&&(d={38:"up",40:"down",39:"left",37:"right"}),d[c.which]){case"up":b.moveMenuItem(e,"up");break;case"down":b.moveMenuItem(e,"down");break;case"left":b.moveMenuItem(e,"left");break;case"right":b.moveMenuItem(e,"right")}return a("#edit-"+g["menu-item-db-id"]).focus(),!1}})})},initPreviewing:function(){a("#menu-to-edit").on("change input",".edit-menu-item-title",function(b){var c,d,e=a(b.currentTarget);c=e.val(),d=e.closest(".menu-item").find(".menu-item-title"),c?d.text(c).removeClass("no-title"):d.text(navMenuL10n.untitled).addClass("no-title")})},initToggles:function(){postboxes.add_postbox_toggles("nav-menus"),columns.useCheckboxesForHidden(),columns.checked=function(b){a(".field-"+b).removeClass("hidden-field")},columns.unchecked=function(b){a(".field-"+b).addClass("hidden-field")},b.menuList.hideAdvancedMenuItemFields(),a(".hide-postbox-tog").click(function(){var b=a(".accordion-container li.accordion-section").filter(":hidden").map(function(){return this.id}).get().join(",");a.post(ajaxurl,{action:"closed-postboxes",hidden:b,closedpostboxesnonce:jQuery("#closedpostboxesnonce").val(),page:"nav-menus"})})},initSortables:function(){function c(a){var c;j=a.placeholder.prev(),k=a.placeholder.next(),j[0]==a.item[0]&&(j=j.prev()),k[0]==a.item[0]&&(k=k.next()),l=j.length?j.offset().top+j.height():0,m=k.length?k.offset().top+k.height()/3:0,h=k.length?k.menuItemDepth():0,i=j.length?(c=j.menuItemDepth()+1)>b.options.globalMaxDepth?b.options.globalMaxDepth:c:0}function d(a,b){a.placeholder.updateDepthClass(b,q),q=b}function e(){if(!s[0].className)return 0;var a=s[0].className.match(/menu-max-depth-(\d+)/);return a&&a[1]?parseInt(a[1],10):0}function f(c){var d,e=t;if(0!==c){if(c>0)d=p+c,d>t&&(e=d);else if(0>c&&p==t)for(;!a(".menu-item-depth-"+e,b.menuList).length&&e>0;)e--;s.removeClass("menu-max-depth-"+t).addClass("menu-max-depth-"+e),t=e}}var g,h,i,j,k,l,m,n,o,p,q=0,r=b.menuList.offset().left,s=a("body"),t=e();0!==a("#menu-to-edit li").length&&a(".drag-instructions").show(),r+=b.isRTL?b.menuList.width():0,b.menuList.sortable({handle:".menu-item-handle",placeholder:"sortable-placeholder",start:function(e,f){var h,i,j,k,l;b.isRTL&&(f.item[0].style.right="auto"),o=f.item.children(".menu-item-transport"),g=f.item.menuItemDepth(),d(f,g),j=f.item.next()[0]==f.placeholder[0]?f.item.next():f.item,k=j.childMenuItems(),o.append(k),h=o.outerHeight(),h+=h>0?1*f.placeholder.css("margin-top").slice(0,-2):0,h+=f.helper.outerHeight(),n=h,h-=2,f.placeholder.height(h),p=g,k.each(function(){var b=a(this).menuItemDepth();p=b>p?b:p}),i=f.helper.find(".menu-item-handle").outerWidth(),i+=b.depthToPx(p-g),i-=2,f.placeholder.width(i),l=f.placeholder.next(),l.css("margin-top",n+"px"),f.placeholder.detach(),a(this).sortable("refresh"),f.item.after(f.placeholder),l.css("margin-top",0),c(f)},stop:function(a,c){var d,e,h=q-g;d=o.children().insertAfter(c.item),e=c.item.find(".item-title .is-submenu"),q>0?e.show():e.hide(),0!==h&&(c.item.updateDepthClass(q),d.shiftDepthClass(h),f(h)),b.registerChange(),c.item.updateParentMenuItemDBId(),c.item[0].style.top=0,b.isRTL&&(c.item[0].style.left="auto",c.item[0].style.right=0),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},change:function(a,d){d.placeholder.parent().hasClass("menu")||(j.length?j.after(d.placeholder):b.menuList.prepend(d.placeholder)),c(d)},sort:function(e,f){var g=f.helper.offset(),j=b.isRTL?g.left+f.helper.width():g.left,o=b.negateIfRTL*b.pxToDepth(j-r);o>i||g.top<l?o=i:h>o&&(o=h),o!=q&&d(f,o),m&&g.top+n>m&&(k.after(f.placeholder),c(f),a(this).sortable("refreshPositions"))}})},initManageLocations:function(){a("#menu-locations-wrap form").submit(function(){window.onbeforeunload=null}),a(".menu-location-menus select").on("change",function(){var b=a(this).closest("tr").find(".locations-edit-menu-link");a(this).find("option:selected").data("orig")?b.show():b.hide()})},attachMenuEditListeners:function(){var b=this;a("#update-nav-menu").bind("click",function(a){if(a.target&&a.target.className){if(-1!=a.target.className.indexOf("item-edit"))return b.eventOnClickEditLink(a.target);if(-1!=a.target.className.indexOf("menu-save"))return b.eventOnClickMenuSave(a.target);if(-1!=a.target.className.indexOf("menu-delete"))return b.eventOnClickMenuDelete(a.target);if(-1!=a.target.className.indexOf("item-delete"))return b.eventOnClickMenuItemDelete(a.target);if(-1!=a.target.className.indexOf("item-cancel"))return b.eventOnClickCancelLink(a.target)}}),a('#add-custom-links input[type="text"]').keypress(function(b){13===b.keyCode&&(b.preventDefault(),a("#submit-customlinkdiv").click())})},setupInputWithDefaultTitle:function(){var b="input-with-default-title";a("."+b).each(function(){var c=a(this),d=c.attr("title"),e=c.val();if(c.data(b,d),""===e)c.val(d);else{if(d==e)return;c.removeClass(b)}}).focus(function(){var c=a(this);c.val()==c.data(b)&&c.val("").removeClass(b)}).blur(function(){var c=a(this);""===c.val()&&c.addClass(b).val(c.data(b))}),a(".blank-slate .input-with-default-title").focus()},attachThemeLocationsListeners:function(){var b=a("#nav-menu-theme-locations"),c={};c.action="menu-locations-save",c["menu-settings-column-nonce"]=a("#menu-settings-column-nonce").val(),b.find('input[type="submit"]').click(function(){return b.find("select").each(function(){c[this.name]=a(this).val()}),b.find(".spinner").addClass("is-active"),a.post(ajaxurl,c,function(){b.find(".spinner").removeClass("is-active")}),!1})},attachQuickSearchListeners:function(){var c;a(".quick-search").keypress(function(d){var e=a(this);return 13==d.which?(b.updateQuickSearchResults(e),!1):(c&&clearTimeout(c),void(c=setTimeout(function(){b.updateQuickSearchResults(e)},400)))}).attr("autocomplete","off")},updateQuickSearchResults:function(c){var d,e,f=2,g=c.val();g.length<f||(d=c.parents(".tabs-panel"),e={action:"menu-quick-search","response-format":"markup",menu:a("#menu").val(),"menu-settings-column-nonce":a("#menu-settings-column-nonce").val(),q:g,type:c.attr("name")},a(".spinner",d).addClass("is-active"),a.post(ajaxurl,e,function(a){b.processQuickSearchQueryResponse(a,e,d)}))},addCustomLink:function(c){var d=a("#custom-menu-item-url").val(),e=a("#custom-menu-item-name").val();return c=c||b.addMenuItemToBottom,""===d||"http://"==d?!1:(a(".customlinkdiv .spinner").addClass("is-active"),void this.addLinkToMenu(d,e,c,function(){a(".customlinkdiv .spinner").removeClass("is-active"),a("#custom-menu-item-name").val("").blur(),a("#custom-menu-item-url").val("http://")}))},addLinkToMenu:function(a,c,d,e){d=d||b.addMenuItemToBottom,e=e||function(){},b.addItemToMenu({"-1":{"menu-item-type":"custom","menu-item-url":a,"menu-item-title":c}},d,e)},addItemToMenu:function(b,c,d){var e,f=a("#menu").val(),g=a("#menu-settings-column-nonce").val();c=c||function(){},d=d||function(){},e={action:"add-menu-item",menu:f,"menu-settings-column-nonce":g,"menu-item":b},a.post(ajaxurl,e,function(b){var f=a("#menu-instructions");b=a.trim(b),c(b,e),a("li.pending").hide().fadeIn("slow"),a(".drag-instructions").show(),!f.hasClass("menu-instructions-inactive")&&f.siblings().length&&f.addClass("menu-instructions-inactive"),d()})},addMenuItemToBottom:function(c){a(c).hideAdvancedMenuItemFields().appendTo(b.targetList),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},addMenuItemToTop:function(c){a(c).hideAdvancedMenuItemFields().prependTo(b.targetList),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},attachUnsavedChangesListener:function(){a("#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select").change(function(){b.registerChange()}),0!==a("#menu-to-edit").length||0!==a(".menu-location-menus select").length?window.onbeforeunload=function(){return b.menusChanged?navMenuL10n.saveAlert:void 0}:a("#menu-settings-column").find("input,select").end().find("a").attr("href","#").unbind("click")},registerChange:function(){b.menusChanged=!0},attachTabsPanelListeners:function(){a("#menu-settings-column").bind("click",function(c){var d,e,f,g,h=a(c.target);if(h.hasClass("nav-tab-link"))e=h.data("type"),f=h.parents(".accordion-section-content").first(),a("input",f).removeAttr("checked"),a(".tabs-panel-active",f).removeClass("tabs-panel-active").addClass("tabs-panel-inactive"),a("#"+e,f).removeClass("tabs-panel-inactive").addClass("tabs-panel-active"),a(".tabs",f).removeClass("tabs"),h.parent().addClass("tabs"),a(".quick-search",f).focus(),c.preventDefault();else if(h.hasClass("select-all")){if(d=/#(.*)$/.exec(c.target.href),d&&d[1])return g=a("#"+d[1]+" .tabs-panel-active .menu-item-title input"),g.length===g.filter(":checked").length?g.removeAttr("checked"):g.prop("checked",!0),!1}else{if(h.hasClass("submit-add-to-menu"))return b.registerChange(),c.target.id&&"submit-customlinkdiv"==c.target.id?b.addCustomLink(b.addMenuItemToBottom):c.target.id&&-1!=c.target.id.indexOf("submit-")&&a("#"+c.target.id.replace(/submit-/,"")).addSelectedToMenu(b.addMenuItemToBottom),!1;if(h.hasClass("page-numbers"))return a.post(ajaxurl,c.target.href.replace(/.*\?/,"").replace(/action=([^&]*)/,"")+"&action=menu-get-metabox",function(b){if(-1!=b.indexOf("replace-id")){var c=a.parseJSON(b),d=document.getElementById(c["replace-id"]),e=document.createElement("div"),f=document.createElement("div");c.markup&&d&&(f.innerHTML=c.markup?c.markup:"",d.parentNode.insertBefore(e,d),e.parentNode.removeChild(d),e.parentNode.insertBefore(f,e),e.parentNode.removeChild(e))}}),!1}})},eventOnClickEditLink:function(b){var c,d,e=/#(.*)$/.exec(b.href);return e&&e[1]&&(c=a("#"+e[1]),d=c.parent(),0!==d.length)?(d.hasClass("menu-item-edit-inactive")?(c.data("menu-item-data")||c.data("menu-item-data",c.getItemData()),c.slideDown("fast"),d.removeClass("menu-item-edit-inactive").addClass("menu-item-edit-active")):(c.slideUp("fast"),d.removeClass("menu-item-edit-active").addClass("menu-item-edit-inactive")),!1):void 0},eventOnClickCancelLink:function(b){var c=a(b).closest(".menu-item-settings"),d=a(b).closest(".menu-item");return d.removeClass("menu-item-edit-active").addClass("menu-item-edit-inactive"),c.setItemData(c.data("menu-item-data")).hide(),!1},eventOnClickMenuSave:function(){var c="",d=a("#menu-name"),e=d.val();return e&&e!=d.attr("title")&&e.replace(/\s+/,"")?(a("#nav-menu-theme-locations select").each(function(){c+='<input type="hidden" name="'+this.name+'" value="'+a(this).val()+'" />'}),a("#update-nav-menu").append(c),b.menuList.find(".menu-item-data-position").val(function(a){return a+1}),window.onbeforeunload=null,!0):(d.parent().addClass("form-invalid"),!1)},eventOnClickMenuDelete:function(){return window.confirm(navMenuL10n.warnDeleteMenu)?(window.onbeforeunload=null,!0):!1},eventOnClickMenuItemDelete:function(c){var d=parseInt(c.id.replace("delete-",""),10);return b.removeMenuItem(a("#menu-item-"+d)),b.registerChange(),!1},processQuickSearchQueryResponse:function(b,c,d){var e,f,g,h={},i=document.getElementById("nav-menu-meta"),j=/menu-item[(\[^]\]*/,k=a("<div>").html(b).find("li");return k.length?(k.each(function(){if(g=a(this),e=j.exec(g.html()),e&&e[1]){for(f=e[1];i.elements["menu-item["+f+"][menu-item-type]"]||h[f];)f--;h[f]=!0,f!=e[1]&&g.html(g.html().replace(new RegExp("menu-item\\["+e[1]+"\\]","g"),"menu-item["+f+"]"))}}),a(".categorychecklist",d).html(k),void a(".spinner",d).removeClass("is-active")):(a(".categorychecklist",d).html("<li><p>"+navMenuL10n.noResultsFound+"</p></li>"),void a(".spinner",d).removeClass("is-active"))},removeMenuItem:function(c){var d=c.childMenuItems();c.addClass("deleting").animate({opacity:0,height:0},350,function(){var e=a("#menu-instructions");c.remove(),d.shiftDepthClass(-1).updateParentMenuItemDBId(),0===a("#menu-to-edit li").length&&(a(".drag-instructions").hide(),e.removeClass("menu-instructions-inactive")),b.refreshAdvancedAccessibility()})},depthToPx:function(a){return a*b.options.menuItemDepthPerLevel},pxToDepth:function(a){return Math.floor(a/b.options.menuItemDepthPerLevel)}},a(document).ready(function(){wpNavMenu.init()})}(jQuery);
\ No newline at end of file
+var wpNavMenu;!function(a){var b;b=wpNavMenu={options:{menuItemDepthPerLevel:30,globalMaxDepth:11},menuList:void 0,targetList:void 0,menusChanged:!1,isRTL:!("undefined"==typeof isRtl||!isRtl),negateIfRTL:"undefined"!=typeof isRtl&&isRtl?-1:1,init:function(){b.menuList=a("#menu-to-edit"),b.targetList=b.menuList,this.jQueryExtensions(),this.attachMenuEditListeners(),this.setupInputWithDefaultTitle(),this.attachQuickSearchListeners(),this.attachThemeLocationsListeners(),this.attachTabsPanelListeners(),this.attachUnsavedChangesListener(),b.menuList.length&&this.initSortables(),menus.oneThemeLocationNoMenus&&a("#posttype-page").addSelectedToMenu(b.addMenuItemToBottom),this.initManageLocations(),this.initAccessibility(),this.initToggles(),this.initPreviewing()},jQueryExtensions:function(){a.fn.extend({menuItemDepth:function(){var a=this.eq(0).css(b.isRTL?"margin-right":"margin-left");return b.pxToDepth(a&&-1!=a.indexOf("px")?a.slice(0,-2):0)},updateDepthClass:function(b,c){return this.each(function(){var d=a(this);c=c||d.menuItemDepth(),a(this).removeClass("menu-item-depth-"+c).addClass("menu-item-depth-"+b)})},shiftDepthClass:function(b){return this.each(function(){var c=a(this),d=c.menuItemDepth();a(this).removeClass("menu-item-depth-"+d).addClass("menu-item-depth-"+(d+b))})},childMenuItems:function(){var b=a();return this.each(function(){for(var c=a(this),d=c.menuItemDepth(),e=c.next();e.length&&e.menuItemDepth()>d;)b=b.add(e),e=e.next()}),b},shiftHorizontally:function(b){return this.each(function(){var c=a(this),d=c.menuItemDepth(),e=d+b;c.moveHorizontally(e,d)})},moveHorizontally:function(b,c){return this.each(function(){var d=a(this),e=d.childMenuItems(),f=b-c,g=d.find(".is-submenu");d.updateDepthClass(b,c).updateParentMenuItemDBId(),e&&e.each(function(){var b=a(this),c=b.menuItemDepth(),d=c+f;b.updateDepthClass(d,c).updateParentMenuItemDBId()}),0===b?g.hide():g.show()})},updateParentMenuItemDBId:function(){return this.each(function(){var b=a(this),c=b.find(".menu-item-data-parent-id"),d=parseInt(b.menuItemDepth(),10),e=d-1,f=b.prevAll(".menu-item-depth-"+e).first();c.val(0===d?0:f.find(".menu-item-data-db-id").val())})},hideAdvancedMenuItemFields:function(){return this.each(function(){var b=a(this);a(".hide-column-tog").not(":checked").each(function(){b.find(".field-"+a(this).val()).addClass("hidden-field")})})},addSelectedToMenu:function(c){return 0===a("#menu-to-edit").length?!1:this.each(function(){var d=a(this),e={},f=d.find(menus.oneThemeLocationNoMenus&&0===d.find(".tabs-panel-active .categorychecklist li input:checked").length?'#page-all li input[type="checkbox"]':".tabs-panel-active .categorychecklist li input:checked"),g=/menu-item\[([^\]]*)/;return c=c||b.addMenuItemToBottom,f.length?(d.find(".spinner").addClass("is-active"),a(f).each(function(){var d=a(this),f=g.exec(d.attr("name")),h="undefined"==typeof f[1]?0:parseInt(f[1],10);this.className&&-1!=this.className.indexOf("add-to-top")&&(c=b.addMenuItemToTop),e[h]=d.closest("li").getItemData("add-menu-item",h)}),void b.addItemToMenu(e,c,function(){f.removeAttr("checked"),d.find(".spinner").removeClass("is-active")})):!1})},getItemData:function(a,b){a=a||"menu-item";var c,d={},e=["menu-item-db-id","menu-item-object-id","menu-item-object","menu-item-parent-id","menu-item-position","menu-item-type","menu-item-title","menu-item-url","menu-item-description","menu-item-attr-title","menu-item-target","menu-item-classes","menu-item-xfn"];return b||"menu-item"!=a||(b=this.find(".menu-item-data-db-id").val()),b?(this.find("input").each(function(){var f;for(c=e.length;c--;)"menu-item"==a?f=e[c]+"["+b+"]":"add-menu-item"==a&&(f="menu-item["+b+"]["+e[c]+"]"),this.name&&f==this.name&&(d[e[c]]=this.value)}),d):d},setItemData:function(b,c,d){return c=c||"menu-item",d||"menu-item"!=c||(d=a(".menu-item-data-db-id",this).val()),d?(this.find("input").each(function(){var e,f=a(this);a.each(b,function(a,b){"menu-item"==c?e=a+"["+d+"]":"add-menu-item"==c&&(e="menu-item["+d+"]["+a+"]"),e==f.attr("name")&&f.val(b)})}),this):this}})},countMenuItems:function(b){return a(".menu-item-depth-"+b).length},moveMenuItem:function(c,d){var e,f,g,h=a("#menu-to-edit li"),i=h.length,j=c.parents("li.menu-item"),k=j.childMenuItems(),l=j.getItemData(),m=parseInt(j.menuItemDepth(),10),n=parseInt(j.index(),10),o=j.next(),p=o.childMenuItems(),q=parseInt(o.menuItemDepth(),10)+1,r=j.prev(),s=parseInt(r.menuItemDepth(),10),t=r.getItemData()["menu-item-db-id"];switch(d){case"up":if(f=n-1,0===n)break;0===f&&0!==m&&j.moveHorizontally(0,m),0!==s&&j.moveHorizontally(s,m),k?(e=j.add(k),e.detach().insertBefore(h.eq(f)).updateParentMenuItemDBId()):j.detach().insertBefore(h.eq(f)).updateParentMenuItemDBId();break;case"down":if(k){if(e=j.add(k),o=h.eq(e.length+n),p=0!==o.childMenuItems().length,p&&(g=parseInt(o.menuItemDepth(),10)+1,j.moveHorizontally(g,m)),i===n+e.length)break;e.detach().insertAfter(h.eq(n+e.length)).updateParentMenuItemDBId()}else{if(0!==p.length&&j.moveHorizontally(q,m),i===n+1)break;j.detach().insertAfter(h.eq(n+1)).updateParentMenuItemDBId()}break;case"top":if(0===n)break;k?(e=j.add(k),e.detach().insertBefore(h.eq(0)).updateParentMenuItemDBId()):j.detach().insertBefore(h.eq(0)).updateParentMenuItemDBId();break;case"left":if(0===m)break;j.shiftHorizontally(-1);break;case"right":if(0===n)break;if(l["menu-item-parent-id"]===t)break;j.shiftHorizontally(1)}c.focus(),b.registerChange(),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},initAccessibility:function(){var c=a("#menu-to-edit");b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility(),c.on("mouseenter.refreshAccessibility focus.refreshAccessibility touchstart.refreshAccessibility",".menu-item",function(){b.refreshAdvancedAccessibilityOfItem(a(this).find(".item-edit"))}),c.on("click",".item-edit",function(){b.refreshAdvancedAccessibilityOfItem(a(this))}),c.on("click",".menus-move",function(c){var d=a(this),e=d.data("dir");"undefined"!=typeof e&&b.moveMenuItem(a(this).parents("li.menu-item").find("a.item-edit"),e),c.preventDefault()})},refreshAdvancedAccessibilityOfItem:function(b){if(!0===a(b).data("needs_accessibility_refresh")){var c,d,e,f,g,h,i,j,k,l=a(b),m=l.closest("li.menu-item").first(),n=m.menuItemDepth(),o=0===n,p=l.closest(".menu-item-handle").find(".menu-item-title").text(),q=parseInt(m.index(),10),r=o?n:parseInt(n-1,10),s=m.prevAll(".menu-item-depth-"+r).first().find(".menu-item-title").text(),t=m.prevAll(".menu-item-depth-"+n).first().find(".menu-item-title").text(),u=a("#menu-to-edit li").length,v=m.nextAll(".menu-item-depth-"+n).length;m.find(".field-move").toggle(u>1),0!==q&&(c=m.find(".menus-move-up"),c.prop("title",menus.moveUp).css("display","inline")),0!==q&&o&&(c=m.find(".menus-move-top"),c.prop("title",menus.moveToTop).css("display","inline")),q+1!==u&&0!==q&&(c=m.find(".menus-move-down"),c.prop("title",menus.moveDown).css("display","inline")),0===q&&0!==v&&(c=m.find(".menus-move-down"),c.prop("title",menus.moveDown).css("display","inline")),o||(c=m.find(".menus-move-left"),d=menus.outFrom.replace("%s",s),c.prop("title",menus.moveOutFrom.replace("%s",s)).text(d).css("display","inline")),0!==q&&m.find(".menu-item-data-parent-id").val()!==m.prev().find(".menu-item-data-db-id").val()&&(c=m.find(".menus-move-right"),d=menus.under.replace("%s",t),c.prop("title",menus.moveUnder.replace("%s",t)).text(d).css("display","inline")),o?(e=a(".menu-item-depth-0"),f=e.index(m)+1,u=e.length,g=menus.menuFocus.replace("%1$s",p).replace("%2$d",f).replace("%3$d",u)):(h=m.prevAll(".menu-item-depth-"+parseInt(n-1,10)).first(),i=h.find(".menu-item-data-db-id").val(),j=h.find(".menu-item-title").text(),k=a('.menu-item .menu-item-data-parent-id[value="'+i+'"]'),f=a(k.parents(".menu-item").get().reverse()).index(m)+1,g=menus.subMenuFocus.replace("%1$s",p).replace("%2$d",f).replace("%3$s",j)),l.prop("title",g).text(g),l.data("needs_accessibility_refresh",!1)}},refreshAdvancedAccessibility:function(){a(".menu-item-settings .field-move a").hide(),a(".item-edit").data("needs_accessibility_refresh",!0),a(".menu-item-edit-active .item-edit").each(function(){b.refreshAdvancedAccessibilityOfItem(this)})},refreshKeyboardAccessibility:function(){a(".item-edit").off("focus").on("focus",function(){a(this).off("keydown").on("keydown",function(c){var d,e=a(this),f=e.parents("li.menu-item"),g=f.getItemData();if((37==c.which||38==c.which||39==c.which||40==c.which)&&(e.off("keydown"),1!==a("#menu-to-edit li").length)){switch(d={38:"up",40:"down",37:"left",39:"right"},a("body").hasClass("rtl")&&(d={38:"up",40:"down",39:"left",37:"right"}),d[c.which]){case"up":b.moveMenuItem(e,"up");break;case"down":b.moveMenuItem(e,"down");break;case"left":b.moveMenuItem(e,"left");break;case"right":b.moveMenuItem(e,"right")}return a("#edit-"+g["menu-item-db-id"]).focus(),!1}})})},initPreviewing:function(){a("#menu-to-edit").on("change input",".edit-menu-item-title",function(b){var c,d,e=a(b.currentTarget);c=e.val(),d=e.closest(".menu-item").find(".menu-item-title"),c?d.text(c).removeClass("no-title"):d.text(navMenuL10n.untitled).addClass("no-title")})},initToggles:function(){postboxes.add_postbox_toggles("nav-menus"),columns.useCheckboxesForHidden(),columns.checked=function(b){a(".field-"+b).removeClass("hidden-field")},columns.unchecked=function(b){a(".field-"+b).addClass("hidden-field")},b.menuList.hideAdvancedMenuItemFields(),a(".hide-postbox-tog").click(function(){var b=a(".accordion-container li.accordion-section").filter(":hidden").map(function(){return this.id}).get().join(",");a.post(ajaxurl,{action:"closed-postboxes",hidden:b,closedpostboxesnonce:jQuery("#closedpostboxesnonce").val(),page:"nav-menus"})})},initSortables:function(){function c(a){var c;j=a.placeholder.prev(),k=a.placeholder.next(),j[0]==a.item[0]&&(j=j.prev()),k[0]==a.item[0]&&(k=k.next()),l=j.length?j.offset().top+j.height():0,m=k.length?k.offset().top+k.height()/3:0,h=k.length?k.menuItemDepth():0,i=j.length?(c=j.menuItemDepth()+1)>b.options.globalMaxDepth?b.options.globalMaxDepth:c:0}function d(a,b){a.placeholder.updateDepthClass(b,q),q=b}function e(){if(!s[0].className)return 0;var a=s[0].className.match(/menu-max-depth-(\d+)/);return a&&a[1]?parseInt(a[1],10):0}function f(c){var d,e=t;if(0!==c){if(c>0)d=p+c,d>t&&(e=d);else if(0>c&&p==t)for(;!a(".menu-item-depth-"+e,b.menuList).length&&e>0;)e--;s.removeClass("menu-max-depth-"+t).addClass("menu-max-depth-"+e),t=e}}var g,h,i,j,k,l,m,n,o,p,q=0,r=b.menuList.offset().left,s=a("body"),t=e();0!==a("#menu-to-edit li").length&&a(".drag-instructions").show(),r+=b.isRTL?b.menuList.width():0,b.menuList.sortable({handle:".menu-item-handle",placeholder:"sortable-placeholder",start:function(e,f){var h,i,j,k,l;b.isRTL&&(f.item[0].style.right="auto"),o=f.item.children(".menu-item-transport"),g=f.item.menuItemDepth(),d(f,g),j=f.item.next()[0]==f.placeholder[0]?f.item.next():f.item,k=j.childMenuItems(),o.append(k),h=o.outerHeight(),h+=h>0?1*f.placeholder.css("margin-top").slice(0,-2):0,h+=f.helper.outerHeight(),n=h,h-=2,f.placeholder.height(h),p=g,k.each(function(){var b=a(this).menuItemDepth();p=b>p?b:p}),i=f.helper.find(".menu-item-handle").outerWidth(),i+=b.depthToPx(p-g),i-=2,f.placeholder.width(i),l=f.placeholder.next(),l.css("margin-top",n+"px"),f.placeholder.detach(),a(this).sortable("refresh"),f.item.after(f.placeholder),l.css("margin-top",0),c(f)},stop:function(a,c){var d,e,h=q-g;d=o.children().insertAfter(c.item),e=c.item.find(".item-title .is-submenu"),q>0?e.show():e.hide(),0!==h&&(c.item.updateDepthClass(q),d.shiftDepthClass(h),f(h)),b.registerChange(),c.item.updateParentMenuItemDBId(),c.item[0].style.top=0,b.isRTL&&(c.item[0].style.left="auto",c.item[0].style.right=0),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},change:function(a,d){d.placeholder.parent().hasClass("menu")||(j.length?j.after(d.placeholder):b.menuList.prepend(d.placeholder)),c(d)},sort:function(e,f){var g=f.helper.offset(),j=b.isRTL?g.left+f.helper.width():g.left,o=b.negateIfRTL*b.pxToDepth(j-r);o>i||g.top<l?o=i:h>o&&(o=h),o!=q&&d(f,o),m&&g.top+n>m&&(k.after(f.placeholder),c(f),a(this).sortable("refreshPositions"))}})},initManageLocations:function(){a("#menu-locations-wrap form").submit(function(){window.onbeforeunload=null}),a(".menu-location-menus select").on("change",function(){var b=a(this).closest("tr").find(".locations-edit-menu-link");a(this).find("option:selected").data("orig")?b.show():b.hide()})},attachMenuEditListeners:function(){var b=this;a("#update-nav-menu").bind("click",function(a){if(a.target&&a.target.className){if(-1!=a.target.className.indexOf("item-edit"))return b.eventOnClickEditLink(a.target);if(-1!=a.target.className.indexOf("menu-save"))return b.eventOnClickMenuSave(a.target);if(-1!=a.target.className.indexOf("menu-delete"))return b.eventOnClickMenuDelete(a.target);if(-1!=a.target.className.indexOf("item-delete"))return b.eventOnClickMenuItemDelete(a.target);if(-1!=a.target.className.indexOf("item-cancel"))return b.eventOnClickCancelLink(a.target)}}),a('#add-custom-links input[type="text"]').keypress(function(b){13===b.keyCode&&(b.preventDefault(),a("#submit-customlinkdiv").click())})},setupInputWithDefaultTitle:function(){var b="input-with-default-title";a("."+b).each(function(){var c=a(this),d=c.attr("title"),e=c.val();if(c.data(b,d),""===e)c.val(d);else{if(d==e)return;c.removeClass(b)}}).focus(function(){var c=a(this);c.val()==c.data(b)&&c.val("").removeClass(b)}).blur(function(){var c=a(this);""===c.val()&&c.addClass(b).val(c.data(b))}),a(".blank-slate .input-with-default-title").focus()},attachThemeLocationsListeners:function(){var b=a("#nav-menu-theme-locations"),c={};c.action="menu-locations-save",c["menu-settings-column-nonce"]=a("#menu-settings-column-nonce").val(),b.find('input[type="submit"]').click(function(){return b.find("select").each(function(){c[this.name]=a(this).val()}),b.find(".spinner").addClass("is-active"),a.post(ajaxurl,c,function(){b.find(".spinner").removeClass("is-active")}),!1})},attachQuickSearchListeners:function(){var c;a(".quick-search").keypress(function(d){var e=a(this);return 13==d.which?(b.updateQuickSearchResults(e),!1):(c&&clearTimeout(c),void(c=setTimeout(function(){b.updateQuickSearchResults(e)},400)))}).attr("autocomplete","off")},updateQuickSearchResults:function(c){var d,e,f=2,g=c.val();g.length<f||(d=c.parents(".tabs-panel"),e={action:"menu-quick-search","response-format":"markup",menu:a("#menu").val(),"menu-settings-column-nonce":a("#menu-settings-column-nonce").val(),q:g,type:c.attr("name")},a(".spinner",d).addClass("is-active"),a.post(ajaxurl,e,function(a){b.processQuickSearchQueryResponse(a,e,d)}))},addCustomLink:function(c){var d=a("#custom-menu-item-url").val(),e=a("#custom-menu-item-name").val();return c=c||b.addMenuItemToBottom,""===d||"http://"==d?!1:(a(".customlinkdiv .spinner").addClass("is-active"),void this.addLinkToMenu(d,e,c,function(){a(".customlinkdiv .spinner").removeClass("is-active"),a("#custom-menu-item-name").val("").blur(),a("#custom-menu-item-url").val("http://")}))},addLinkToMenu:function(a,c,d,e){d=d||b.addMenuItemToBottom,e=e||function(){},b.addItemToMenu({"-1":{"menu-item-type":"custom","menu-item-url":a,"menu-item-title":c}},d,e)},addItemToMenu:function(b,c,d){var e,f=a("#menu").val(),g=a("#menu-settings-column-nonce").val();c=c||function(){},d=d||function(){},e={action:"add-menu-item",menu:f,"menu-settings-column-nonce":g,"menu-item":b},a.post(ajaxurl,e,function(b){var f=a("#menu-instructions");b=a.trim(b),c(b,e),a("li.pending").hide().fadeIn("slow"),a(".drag-instructions").show(),!f.hasClass("menu-instructions-inactive")&&f.siblings().length&&f.addClass("menu-instructions-inactive"),d()})},addMenuItemToBottom:function(c){a(c).hideAdvancedMenuItemFields().appendTo(b.targetList),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},addMenuItemToTop:function(c){a(c).hideAdvancedMenuItemFields().prependTo(b.targetList),b.refreshKeyboardAccessibility(),b.refreshAdvancedAccessibility()},attachUnsavedChangesListener:function(){a("#menu-management input, #menu-management select, #menu-management, #menu-management textarea, .menu-location-menus select").change(function(){b.registerChange()}),0!==a("#menu-to-edit").length||0!==a(".menu-location-menus select").length?window.onbeforeunload=function(){return b.menusChanged?navMenuL10n.saveAlert:void 0}:a("#menu-settings-column").find("input,select").end().find("a").attr("href","#").unbind("click")},registerChange:function(){b.menusChanged=!0},attachTabsPanelListeners:function(){a("#menu-settings-column").bind("click",function(c){var d,e,f,g,h=a(c.target);if(h.hasClass("nav-tab-link"))e=h.data("type"),f=h.parents(".accordion-section-content").first(),a("input",f).removeAttr("checked"),a(".tabs-panel-active",f).removeClass("tabs-panel-active").addClass("tabs-panel-inactive"),a("#"+e,f).removeClass("tabs-panel-inactive").addClass("tabs-panel-active"),a(".tabs",f).removeClass("tabs"),h.parent().addClass("tabs"),a(".quick-search",f).focus(),c.preventDefault();else if(h.hasClass("select-all")){if(d=/#(.*)$/.exec(c.target.href),d&&d[1])return g=a("#"+d[1]+" .tabs-panel-active .menu-item-title input"),g.length===g.filter(":checked").length?g.removeAttr("checked"):g.prop("checked",!0),!1}else{if(h.hasClass("submit-add-to-menu"))return b.registerChange(),c.target.id&&"submit-customlinkdiv"==c.target.id?b.addCustomLink(b.addMenuItemToBottom):c.target.id&&-1!=c.target.id.indexOf("submit-")&&a("#"+c.target.id.replace(/submit-/,"")).addSelectedToMenu(b.addMenuItemToBottom),!1;if(h.hasClass("page-numbers"))return a.post(ajaxurl,c.target.href.replace(/.*\?/,"").replace(/action=([^&]*)/,"")+"&action=menu-get-metabox",function(b){if(-1!=b.indexOf("replace-id")){var c=a.parseJSON(b),d=document.getElementById(c["replace-id"]),e=document.createElement("div"),f=document.createElement("div");c.markup&&d&&(f.innerHTML=c.markup?c.markup:"",d.parentNode.insertBefore(e,d),e.parentNode.removeChild(d),e.parentNode.insertBefore(f,e),e.parentNode.removeChild(e))}}),!1}})},eventOnClickEditLink:function(b){var c,d,e=/#(.*)$/.exec(b.href);return e&&e[1]&&(c=a("#"+e[1]),d=c.parent(),0!==d.length)?(d.hasClass("menu-item-edit-inactive")?(c.data("menu-item-data")||c.data("menu-item-data",c.getItemData()),c.slideDown("fast"),d.removeClass("menu-item-edit-inactive").addClass("menu-item-edit-active")):(c.slideUp("fast"),d.removeClass("menu-item-edit-active").addClass("menu-item-edit-inactive")),!1):void 0},eventOnClickCancelLink:function(b){var c=a(b).closest(".menu-item-settings"),d=a(b).closest(".menu-item");return d.removeClass("menu-item-edit-active").addClass("menu-item-edit-inactive"),c.setItemData(c.data("menu-item-data")).hide(),!1},eventOnClickMenuSave:function(){var c="",d=a("#menu-name"),e=d.val();return e&&e!=d.attr("title")&&e.replace(/\s+/,"")?(a("#nav-menu-theme-locations select").each(function(){c+='<input type="hidden" name="'+this.name+'" value="'+a(this).val()+'" />'}),a("#update-nav-menu").append(c),b.menuList.find(".menu-item-data-position").val(function(a){return a+1}),window.onbeforeunload=null,!0):(d.parent().addClass("form-invalid"),!1)},eventOnClickMenuDelete:function(){return window.confirm(navMenuL10n.warnDeleteMenu)?(window.onbeforeunload=null,!0):!1},eventOnClickMenuItemDelete:function(c){var d=parseInt(c.id.replace("delete-",""),10);return b.removeMenuItem(a("#menu-item-"+d)),b.registerChange(),!1},processQuickSearchQueryResponse:function(b,c,d){var e,f,g,h={},i=document.getElementById("nav-menu-meta"),j=/menu-item[(\[^]\]*/,k=a("<div>").html(b).find("li");return k.length?(k.each(function(){if(g=a(this),e=j.exec(g.html()),e&&e[1]){for(f=e[1];i.elements["menu-item["+f+"][menu-item-type]"]||h[f];)f--;h[f]=!0,f!=e[1]&&g.html(g.html().replace(new RegExp("menu-item\\["+e[1]+"\\]","g"),"menu-item["+f+"]"))}}),a(".categorychecklist",d).html(k),void a(".spinner",d).removeClass("is-active")):(a(".categorychecklist",d).html("<li><p>"+navMenuL10n.noResultsFound+"</p></li>"),void a(".spinner",d).removeClass("is-active"))},removeMenuItem:function(c){var d=c.childMenuItems();c.addClass("deleting").animate({opacity:0,height:0},350,function(){var e=a("#menu-instructions");c.remove(),d.shiftDepthClass(-1).updateParentMenuItemDBId(),0===a("#menu-to-edit li").length&&(a(".drag-instructions").hide(),e.removeClass("menu-instructions-inactive")),b.refreshAdvancedAccessibility()})},depthToPx:function(a){return a*b.options.menuItemDepthPerLevel},pxToDepth:function(a){return Math.floor(a/b.options.menuItemDepthPerLevel)}},a(document).ready(function(){wpNavMenu.init()})}(jQuery);
\ No newline at end of file
--- a/wp-admin/post.php
+++ b/wp-admin/post.php
@@ -160,6 +160,7 @@ case 'edit':
 		wp_die( __( 'You can&#8217;t edit this item because it is in the Trash. Please restore it and try again.' ) );
 
 	if ( ! empty( $_GET['get-post-lock'] ) ) {
+		check_admin_referer( 'lock-post_' . $post_id );
 		wp_set_post_lock( $post_id );
 		wp_redirect( get_edit_post_link( $post_id, 'url' ) );
 		exit();
--- a/wp-includes/class-wp-customize-widgets.php
+++ b/wp-includes/class-wp-customize-widgets.php
@@ -1124,7 +1124,7 @@ final class WP_Customize_Widgets {
 			return null;
 		}
 
-		if ( $this->get_instance_hash_key( $decoded ) !== $value['instance_hash_key'] ) {
+		if ( ! hash_equals( $this->get_instance_hash_key( $decoded ), $value['instance_hash_key'] ) ) {
 			return null;
 		}
 
--- a/wp-includes/class-wp-embed.php
+++ b/wp-includes/class-wp-embed.php
@@ -312,11 +312,14 @@ class WP_Embed {
 	 * @return string Potentially modified $content.
 	 */
 	public function autoembed( $content ) {
-		// Strip newlines from all elements.
-		$content = wp_replace_in_html_tags( $content, array( "\n" => " " ) );
+		// Replace line breaks from all HTML elements with placeholders.
+		$content = wp_replace_in_html_tags( $content, array( "\n" => '<!-- wp-line-break -->' ) );
 
 		// Find URLs that are on their own line.
-		return preg_replace_callback( '|^(\s*)(https?://[^\s"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content );
+		$content = preg_replace_callback( '|^(\s*)(https?://[^\s"]+)(\s*)$|im', array( $this, 'autoembed_callback' ), $content );
+
+		// Put the line breaks back.
+		return str_replace( '<!-- wp-line-break -->', "\n", $content );
 	}
 
 	/**
--- a/wp-includes/default-widgets.php
+++ b/wp-includes/default-widgets.php
@@ -1410,7 +1410,7 @@ class WP_Widget_Tag_Cloud extends WP_Widget {
 		?>
 		<p>
 			<label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:') ?></label>
-			<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo $title; ?>" />
+			<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo esc_attr( $title ); ?>" />
 		</p>
 		<p>
 			<label for="<?php echo $this->get_field_id('nav_menu'); ?>"><?php _e('Select Menu:'); ?></label>
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -419,10 +419,10 @@ function wpautop($pee, $br = true) {
 	$pee = preg_replace('!(</' . $allblocks . '>)!', "$1\n\n", $pee);
 
 	// Standardize newline characters to "\n".
-	$pee = str_replace(array("\r\n", "\r"), "\n", $pee); 
+	$pee = str_replace(array("\r\n", "\r"), "\n", $pee);
 
-	// Strip newlines from all elements.
-	$pee = wp_replace_in_html_tags( $pee, array( "\n" => " " ) );
+	// Find newlines in all elements and add placeholders.
+	$pee = wp_replace_in_html_tags( $pee, array( "\n" => " <!-- wpnl --> " ) );
 
 	// Collapse line breaks before and after <option> elements so they don't get autop'd.
 	if ( strpos( $pee, '<option' ) !== false ) {
@@ -509,10 +509,60 @@ function wpautop($pee, $br = true) {
 	if ( !empty($pre_tags) )
 		$pee = str_replace(array_keys($pre_tags), array_values($pre_tags), $pee);
 
+	// Restore newlines in all elements.
+	$pee = str_replace( " <!-- wpnl --> ", "\n", $pee );
+
 	return $pee;
 }
 
 /**
+ * Separate HTML elements and comments from the text.
+ *
+ * @since 4.2.4
+ *
+ * @param string $input The text which has to be formatted.
+ * @return array The formatted text.
+ */
+function wp_html_split( $input ) {
+	static $regex;
+
+	if ( ! isset( $regex ) ) {
+		$comments =
+			  '!'           // Start of comment, after the <.
+			. '(?:'         // Unroll the loop: Consume everything until --> is found.
+			.     '-(?!->)' // Dash not followed by end of comment.
+			.     '[^\-]*+' // Consume non-dashes.
+			. ')*+'         // Loop possessively.
+			. '(?:-->)?';   // End of comment. If not found, match all input.
+
+		$cdata =
+			  '!\[CDATA\['  // Start of comment, after the <.
+			. '[^\]]*+'     // Consume non-].
+			. '(?:'         // Unroll the loop: Consume everything until ]]> is found.
+			.     '](?!]>)' // One ] not followed by end of comment.
+			.     '[^\]]*+' // Consume non-].
+			. ')*+'         // Loop possessively.
+			. '(?:]]>)?';   // End of comment. If not found, match all input.
+
+		$regex =
+			  '/('              // Capture the entire match.
+			.     '<'           // Find start of element.
+			.     '(?(?=!--)'   // Is this a comment?
+			.         $comments // Find end of comment.
+			.     '|'
+			.         '(?(?=!\[CDATA\[)' // Is this a comment?
+			.             $cdata // Find end of comment.
+			.         '|'
+			.             '[^>]*>?' // Find end of element. If not found, match all input.
+			.         ')'
+			.     ')'
+			. ')/s';
+	}
+
+	return preg_split( $regex, $input, -1, PREG_SPLIT_DELIM_CAPTURE );
+}
+
+/**
  * Replace characters or phrases within HTML elements only.
  *
  * @since 4.2.3
@@ -523,25 +573,7 @@ function wpautop($pee, $br = true) {
  */
 function wp_replace_in_html_tags( $haystack, $replace_pairs ) {
 	// Find all elements.
-	$comments =
-		  '!'           // Start of comment, after the <.
-		. '(?:'         // Unroll the loop: Consume everything until --> is found.
-		.     '-(?!->)' // Dash not followed by end of comment.
-		.     '[^\-]*+' // Consume non-dashes.
-		. ')*+'         // Loop possessively.
-		. '(?:-->)?';   // End of comment. If not found, match all input.
-
-	$regex =
-		  '/('              // Capture the entire match.
-		.     '<'           // Find start of element.
-		.     '(?(?=!--)'   // Is this a comment?
-		.         $comments // Find end of comment.
-		.     '|'
-		.         '[^>]*>?' // Find end of element. If not found, match all input.
-		.     ')'
-		. ')/s';
-
-	$textarr = preg_split( $regex, $haystack, -1, PREG_SPLIT_DELIM_CAPTURE );
+	$textarr = wp_html_split( $haystack );
 	$changed = false;
 
 	// Optimize when searching for one item.
--- a/wp-includes/l10n.php
+++ b/wp-includes/l10n.php
@@ -763,11 +763,15 @@ function translate_user_role( $name ) {
 function get_available_languages( $dir = null ) {
 	$languages = array();
 
-	foreach( (array)glob( ( is_null( $dir) ? WP_LANG_DIR : $dir ) . '/*.mo' ) as $lang_file ) {
-		$lang_file = basename($lang_file, '.mo');
-		if ( 0 !== strpos( $lang_file, 'continents-cities' ) && 0 !== strpos( $lang_file, 'ms-' ) &&
-			0 !== strpos( $lang_file, 'admin-' ))
-			$languages[] = $lang_file;
+	$lang_files = glob( ( is_null( $dir) ? WP_LANG_DIR : $dir ) . '/*.mo' );
+	if ( $lang_files ) {
+		foreach( $lang_files as $lang_file ) {
+			$lang_file = basename( $lang_file, '.mo' );
+			if ( 0 !== strpos( $lang_file, 'continents-cities' ) && 0 !== strpos( $lang_file, 'ms-' ) &&
+				0 !== strpos( $lang_file, 'admin-' ) ) {
+				$languages[] = $lang_file;
+			}
+		}
 	}
 
 	return $languages;
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2905,10 +2905,11 @@ function wp_untrash_post_comments( $post = null ) {
 
 	foreach ( $group_by_status as $status => $comments ) {
 		// Sanity check. This shouldn't happen.
-		if ( 'post-trashed' == $status )
+		if ( 'post-trashed' == $status ) {
 			$status = '0';
-		$comments_in = implode( "', '", $comments );
-		$wpdb->query( "UPDATE $wpdb->comments SET comment_approved = '$status' WHERE comment_ID IN ('" . $comments_in . "')" );
+		}
+		$comments_in = implode( ', ', array_map( 'intval', $comments ) );
+		$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->comments SET comment_approved = %s WHERE comment_ID IN ($comments_in)", $status ) );
 	}
 
 	clean_comment_cache( array_keys($statuses) );
--- a/wp-includes/shortcodes.php
+++ b/wp-includes/shortcodes.php
@@ -328,29 +328,10 @@ function do_shortcodes_in_html_tags( $content, $ignore_html ) {
 	$trans = array( '[' => '&#91;', ']' => '&#93;' );
 	
 	$pattern = get_shortcode_regex();
-
-	$comment_regex =
-		  '!'           // Start of comment, after the <.
-		. '(?:'         // Unroll the loop: Consume everything until --> is found.
-		.     '-(?!->)' // Dash not followed by end of comment.
-		.     '[^\-]*+' // Consume non-dashes.
-		. ')*+'         // Loop possessively.
-		. '(?:-->)?';   // End of comment. If not found, match all input.
-
-	$regex =
-		  '/('                   // Capture the entire match.
-		.     '<'                // Find start of element.
-		.     '(?(?=!--)'        // Is this a comment?
-		.         $comment_regex // Find end of comment.
-		.     '|'
-		.         '[^>]*>?'      // Find end of element. If not found, match all input.
-		.     ')'
-		. ')/s';
-
-	$textarr = preg_split( $regex, $content, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
+	$textarr = wp_html_split( $content );
 
 	foreach ( $textarr as &$element ) {
-		if ( '<' !== $element[0] ) {
+		if ( '' == $element || '<' !== $element[0] ) {
 			continue;
 		}
 
@@ -365,7 +346,7 @@ function do_shortcodes_in_html_tags( $content, $ignore_html ) {
 			continue;
 		}
 
-		if ( $ignore_html || '<!--' === substr( $element, 0, 4 ) ) {
+		if ( $ignore_html || '<!--' === substr( $element, 0, 4 ) || '<![CDATA[' === substr( $element, 0, 9 ) ) {
 			// Encode all [ and ] chars.
 			$element = strtr( $element, $trans );
 			continue;
@@ -373,6 +354,11 @@ function do_shortcodes_in_html_tags( $content, $ignore_html ) {
 
 		$attributes = wp_kses_attr_parse( $element );
 		if ( false === $attributes ) {
+			// Some plugins are doing things like [name] <[email]>.
+			if ( 1 === preg_match( '%^<\s*\[\[?[^\[\]]+\]%', $element ) ) {
+				$element = preg_replace_callback( "/$pattern/s", 'do_shortcode_tag', $element );
+			}
+
 			// Looks like we found some crazy unfiltered HTML.  Skipping it for sanity.
 			$element = strtr( $element, $trans );
 			continue;
--- a/wp-includes/theme.php
+++ b/wp-includes/theme.php
@@ -673,8 +673,6 @@ function preview_theme() {
 
 	// Prevent theme mods to current theme being used on theme being previewed
 	add_filter( 'pre_option_theme_mods_' . get_option( 'stylesheet' ), '__return_empty_array' );
-
-	ob_start( 'preview_theme_ob_filter' );
 }
 
 /**
@@ -711,7 +709,7 @@ function _preview_theme_stylesheet_filter() {
  * @return string
  */
 function preview_theme_ob_filter( $content ) {
-	return preg_replace_callback( "|(<a.*?href=([\"']))(.*?)([\"'].*?>)|", 'preview_theme_ob_filter_callback', $content );
+	return $content;
 }
 
 /**
@@ -726,26 +724,7 @@ function preview_theme_ob_filter( $content ) {
  * @return string
  */
 function preview_theme_ob_filter_callback( $matches ) {
-	if ( strpos($matches[4], 'onclick') !== false )
-		$matches[4] = preg_replace('#onclick=([\'"]).*?(?<!\\\)\\1#i', '', $matches[4]); //Strip out any onclicks from rest of <a>. (?<!\\\) means to ignore the '" if it's escaped by \  to prevent breaking mid-attribute.
-	if (
-		( false !== strpos($matches[3], '/wp-admin/') )
-	||
-		( false !== strpos( $matches[3], '://' ) && 0 !== strpos( $matches[3], home_url() ) )
-	||
-		( false !== strpos($matches[3], '/feed/') )
-	||
-		( false !== strpos($matches[3], '/trackback/') )
-	)
-		return $matches[1] . "#$matches[2] onclick=$matches[2]return false;" . $matches[4];
-
-	$stylesheet = isset( $_GET['stylesheet'] ) ? $_GET['stylesheet'] : '';
-	$template   = isset( $_GET['template'] )   ? $_GET['template']   : '';
-
-	$link = add_query_arg( array( 'preview' => 1, 'template' => $template, 'stylesheet' => $stylesheet, 'preview_iframe' => 1 ), $matches[3] );
-	if ( 0 === strpos($link, 'preview=1') )
-		$link = "?$link";
-	return $matches[1] . esc_attr( $link ) . $matches[4];
+	return $matches[0];
 }
 
 /**
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2.3';
+$wp_version = '4.2.4';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
--- a/wp-includes/wp-db.php
+++ b/wp-includes/wp-db.php
@@ -2081,7 +2081,7 @@ class wpdb {
 	public function get_var( $query = null, $x = 0, $y = 0 ) {
 		$this->func_call = "\$db->get_var(\"$query\", $x, $y)";
 
-		if ( $this->check_safe_collation( $query ) ) {
+		if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
 			$this->check_current_query = false;
 		}
 
@@ -2114,7 +2114,7 @@ class wpdb {
 	public function get_row( $query = null, $output = OBJECT, $y = 0 ) {
 		$this->func_call = "\$db->get_row(\"$query\",$output,$y)";
 
-		if ( $this->check_safe_collation( $query ) ) {
+		if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
 			$this->check_current_query = false;
 		}
 
@@ -2155,7 +2155,7 @@ class wpdb {
 	 * @return array Database query result. Array indexed from 0 by SQL result row number.
 	 */
 	public function get_col( $query = null , $x = 0 ) {
-		if ( $this->check_safe_collation( $query ) ) {
+		if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
 			$this->check_current_query = false;
 		}
 
@@ -2187,7 +2187,7 @@ class wpdb {
 	public function get_results( $query = null, $output = OBJECT ) {
 		$this->func_call = "\$db->get_results(\"$query\", $output)";
 
-		if ( $this->check_safe_collation( $query ) ) {
+		if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
 			$this->check_current_query = false;
 		}
 
@@ -2713,7 +2713,9 @@ class wpdb {
 			}
 
 			foreach ( array_keys( $data ) as $column ) {
-				$data[ $column ]['value'] = $row["x_$column"];
+				if ( isset( $row["x_$column"] ) ) {
+					$data[ $column ]['value'] = $row["x_$column"];
+				}
 			}
 		}
 
