diff --git a/wp-admin/includes/class-wp-posts-list-table.php b/wp-admin/includes/class-wp-posts-list-table.php
index 506dded3fd..983a274f85 100644
--- a/wp-admin/includes/class-wp-posts-list-table.php
+++ b/wp-admin/includes/class-wp-posts-list-table.php
@@ -1550,10 +1550,13 @@ class WP_Posts_List_Table extends WP_List_Table {
 	<?php if ( count( $flat_taxonomies ) && !$bulk ) : ?>
 
 	<?php foreach ( $flat_taxonomies as $taxonomy ) : ?>
-		<?php if ( current_user_can( $taxonomy->cap->assign_terms ) ) : ?>
+		<?php if ( current_user_can( $taxonomy->cap->assign_terms ) ) :
+			$taxonomy_name = esc_attr( $taxonomy->name );
+	
+			?>
 			<label class="inline-edit-tags">
 				<span class="title"><?php echo esc_html( $taxonomy->labels->name ) ?></span>
-				<textarea cols="22" rows="1" name="tax_input[<?php echo esc_attr( $taxonomy->name )?>]" class="tax_input_<?php echo esc_attr( $taxonomy->name )?>"></textarea>
+				<textarea data-wp-taxonomy="<?php echo $taxonomy_name; ?>" cols="22" rows="1" name="tax_input[<?php echo $taxonomy_name; ?>]" class="tax_input_<?php echo $taxonomy_name; ?>"></textarea>
 			</label>
 		<?php endif; ?>
 
diff --git a/wp-admin/includes/meta-boxes.php b/wp-admin/includes/meta-boxes.php
index b345e6f7ec..98e20de417 100644
--- a/wp-admin/includes/meta-boxes.php
+++ b/wp-admin/includes/meta-boxes.php
@@ -431,7 +431,7 @@ function post_tags_meta_box( $post, $box ) {
  	<?php if ( $user_can_assign_terms ) : ?>
 	<div class="ajaxtag hide-if-no-js">
 		<label class="screen-reader-text" for="new-tag-<?php echo $tax_name; ?>"><?php echo $taxonomy->labels->add_new_item; ?></label>
-		<p><input type="text" id="new-tag-<?php echo $tax_name; ?>" name="newtag[<?php echo $tax_name; ?>]" class="newtag form-input-tip" size="16" autocomplete="off" aria-describedby="new-tag-<?php echo $tax_name; ?>-desc" value="" />
+		<p><input data-wp-taxonomy="<?php echo $tax_name; ?>" type="text" id="new-tag-<?php echo $tax_name; ?>" name="newtag[<?php echo $tax_name; ?>]" class="newtag form-input-tip" size="16" autocomplete="off" aria-describedby="new-tag-<?php echo $tax_name; ?>-desc" value="" />
 		<input type="button" class="button tagadd" value="<?php esc_attr_e('Add'); ?>" /></p>
 	</div>
 	<p class="howto" id="new-tag-<?php echo $tax_name; ?>-desc"><?php echo $taxonomy->labels->separate_items_with_commas; ?></p>
diff --git a/wp-admin/js/inline-edit-post.js b/wp-admin/js/inline-edit-post.js
index 3a65805e3e..9582707479 100644
--- a/wp-admin/js/inline-edit-post.js
+++ b/wp-admin/js/inline-edit-post.js
@@ -83,7 +83,7 @@ inlineEditPost = {
 	},
 
 	setBulk : function(){
-		var te = '', type = this.type, tax, c = true;
+		var te = '', type = this.type, c = true;
 		this.revert();
 
 		$( '#bulk-edit td' ).attr( 'colspan', $( 'th:visible, td:visible', '.widefat:first thead' ).length );
@@ -114,9 +114,9 @@ inlineEditPost = {
 
 		// enable autocomplete for tags
 		if ( 'post' === type ) {
-			// support multi taxonomies?
-			tax = 'post_tag';
-			$('tr.inline-editor textarea[name="tax_input['+tax+']"]').suggest( ajaxurl + '?action=ajax-tag-search&tax=' + tax, { delay: 500, minchars: 2, multiple: true, multipleSep: inlineEditL10n.comma } );
+			$( 'tr.inline-editor textarea[data-wp-taxonomy]' ).each( function ( i, element ) {
+				$( element ).wpTagsSuggest();
+			} );
 		}
 		$('html, body').animate( { scrollTop: 0 }, 'fast' );
 	},
@@ -196,7 +196,7 @@ inlineEditPost = {
 				textarea.val(terms);
 			}
 
-			textarea.suggest( ajaxurl + '?action=ajax-tag-search&tax=' + taxname, { delay: 500, minchars: 2, multiple: true, multipleSep: inlineEditL10n.comma } );
+			textarea.wpTagsSuggest();
 		});
 
 		// handle the post status
diff --git a/wp-admin/js/inline-edit-post.min.js b/wp-admin/js/inline-edit-post.min.js
index bfe5f8823a..ee0aeb8d2b 100644
--- a/wp-admin/js/inline-edit-post.min.js
+++ b/wp-admin/js/inline-edit-post.min.js
@@ -1 +1 @@
-window.wp=window.wp||{};var inlineEditPost;!function(a,b){inlineEditPost={init:function(){var b=this,c=a("#inline-edit"),d=a("#bulk-edit");b.type=a("table.widefat").hasClass("pages")?"page":"post",b.what="#post-",c.keyup(function(a){return 27===a.which?inlineEditPost.revert():void 0}),d.keyup(function(a){return 27===a.which?inlineEditPost.revert():void 0}),a(".cancel",c).click(function(){return inlineEditPost.revert()}),a(".save",c).click(function(){return inlineEditPost.save(this)}),a("td",c).keydown(function(b){return 13!==b.which||a(b.target).hasClass("cancel")?void 0:inlineEditPost.save(this)}),a(".cancel",d).click(function(){return inlineEditPost.revert()}),a('#inline-edit .inline-edit-private input[value="private"]').click(function(){var b=a("input.inline-edit-password-input");a(this).prop("checked")?b.val("").prop("disabled",!0):b.prop("disabled",!1)}),a("#the-list").on("click","a.editinline",function(a){a.preventDefault(),inlineEditPost.edit(this)}),a("#bulk-edit").find("fieldset:first").after(a("#inline-edit fieldset.inline-edit-categories").clone()).siblings("fieldset:last").prepend(a("#inline-edit label.inline-edit-tags").clone()),a('select[name="_status"] option[value="future"]',d).remove(),a("#doaction, #doaction2").click(function(c){var d;b.whichBulkButtonId=a(this).attr("id"),d=b.whichBulkButtonId.substr(2),"edit"===a('select[name="'+d+'"]').val()?(c.preventDefault(),b.setBulk()):a("form#posts-filter tr.inline-editor").length>0&&b.revert()})},toggle:function(b){var c=this;"none"===a(c.what+c.getId(b)).css("display")?c.revert():c.edit(b)},setBulk:function(){var b,c="",d=this.type,e=!0;return this.revert(),a("#bulk-edit td").attr("colspan",a("th:visible, td:visible",".widefat:first thead").length),a("table.widefat tbody").prepend(a("#bulk-edit")).prepend('<tr class="hidden"></tr>'),a("#bulk-edit").addClass("inline-editor").show(),a('tbody th.check-column input[type="checkbox"]').each(function(){if(a(this).prop("checked")){e=!1;var b,d=a(this).val();b=a("#inline_"+d+" .post_title").html()||inlineEditL10n.notitle,c+='<div id="ttle'+d+'"><a id="_'+d+'" class="ntdelbutton" title="'+inlineEditL10n.ntdeltitle+'">X</a>'+b+"</div>"}}),e?this.revert():(a("#bulk-titles").html(c),a("#bulk-titles a").click(function(){var b=a(this).attr("id").substr(1);a('table.widefat input[value="'+b+'"]').prop("checked",!1),a("#ttle"+b).remove()}),"post"===d&&(b="post_tag",a('tr.inline-editor textarea[name="tax_input['+b+']"]').suggest(ajaxurl+"?action=ajax-tag-search&tax="+b,{delay:500,minchars:2,multiple:!0,multipleSep:inlineEditL10n.comma})),void a("html, body").animate({scrollTop:0},"fast"))},edit:function(b){var c,d,e,f,g,h,i,j,k,l,m,n=this,o=!0;for(n.revert(),"object"==typeof b&&(b=n.getId(b)),c=["post_title","post_name","post_author","_status","jj","mm","aa","hh","mn","ss","post_password","post_format","menu_order"],"page"===n.type&&c.push("post_parent","page_template"),d=a("#inline-edit").clone(!0),a("td",d).attr("colspan",a("th:visible, td:visible",".widefat:first thead").length),a(n.what+b).removeClass("is-expanded").hide().after(d).after('<tr class="hidden"></tr>'),e=a("#inline_"+b),a(':input[name="post_author"] option[value="'+a(".post_author",e).text()+'"]',d).val()||a(':input[name="post_author"]',d).prepend('<option value="'+a(".post_author",e).text()+'">'+a("#"+n.type+"-"+b+" .author").text()+"</option>"),1===a(':input[name="post_author"] option',d).length&&a("label.inline-edit-author",d).hide(),k=0;k<c.length;k++)l=a("."+c[k],e),l.find("img").replaceWith(function(){return this.alt}),l=l.text(),a(':input[name="'+c[k]+'"]',d).val(l);if("open"===a(".comment_status",e).text()&&a('input[name="comment_status"]',d).prop("checked",!0),"open"===a(".ping_status",e).text()&&a('input[name="ping_status"]',d).prop("checked",!0),"sticky"===a(".sticky",e).text()&&a('input[name="sticky"]',d).prop("checked",!0),a(".post_category",e).each(function(){var c,e=a(this).text();e&&(c=a(this).attr("id").replace("_"+b,""),a("ul."+c+"-checklist :checkbox",d).val(e.split(",")))}),a(".tags_input",e).each(function(){var c=a(this),e=a(this).attr("id").replace("_"+b,""),f=a("textarea.tax_input_"+e,d),g=inlineEditL10n.comma;c.find("img").replaceWith(function(){return this.alt}),c=c.text(),c&&(","!==g&&(c=c.replace(/,/g,g)),f.val(c)),f.suggest(ajaxurl+"?action=ajax-tag-search&tax="+e,{delay:500,minchars:2,multiple:!0,multipleSep:inlineEditL10n.comma})}),f=a("._status",e).text(),"future"!==f&&a('select[name="_status"] option[value="future"]',d).remove(),m=a(".inline-edit-password-input").prop("disabled",!1),"private"===f&&(a('input[name="keep_private"]',d).prop("checked",!0),m.val("").prop("disabled",!0)),g=a('select[name="post_parent"] option[value="'+b+'"]',d),g.length>0){for(h=g[0].className.split("-")[1],i=g;o&&(i=i.next("option"),0!==i.length);)j=i[0].className.split("-")[1],h>=j?o=!1:(i.remove(),i=g);g.remove()}return a(d).attr("id","edit-"+b).addClass("inline-editor").show(),a(".ptitle",d).focus(),!1},save:function(c){var d,e,f=a(".post_status_page").val()||"";return"object"==typeof c&&(c=this.getId(c)),a("table.widefat .spinner").addClass("is-active"),d={action:"inline-save",post_type:typenow,post_ID:c,edit_date:"true",post_status:f},e=a("#edit-"+c).find(":input").serialize(),d=e+"&"+a.param(d),a.post(ajaxurl,d,function(d){var e=a("#edit-"+c+" .inline-edit-save .error");a("table.widefat .spinner").removeClass("is-active"),a(".ac_results").hide(),d?-1!==d.indexOf("<tr")?(a(inlineEditPost.what+c).siblings("tr.hidden").addBack().remove(),a("#edit-"+c).before(d).remove(),a(inlineEditPost.what+c).hide().fadeIn(400,function(){a(this).find(".editinline").focus(),b.a11y.speak(inlineEditL10n.saved)})):(d=d.replace(/<.[^<>]*?>/g,""),e.html(d).show(),b.a11y.speak(e.text())):(e.html(inlineEditL10n.error).show(),b.a11y.speak(inlineEditL10n.error))},"html"),!1},revert:function(){var b=a(".widefat"),c=a(".inline-editor",b).attr("id");return c&&(a(".spinner",b).removeClass("is-active"),a(".ac_results").hide(),"bulk-edit"===c?(a("#bulk-edit",b).removeClass("inline-editor").hide().siblings(".hidden").remove(),a("#bulk-titles").empty(),a("#inlineedit").append(a("#bulk-edit")),a("#"+inlineEditPost.whichBulkButtonId).focus()):(a("#"+c).siblings("tr.hidden").addBack().remove(),c=c.substr(c.lastIndexOf("-")+1),a(this.what+c).show().find(".editinline").focus())),!1},getId:function(b){var c=a(b).closest("tr").attr("id"),d=c.split("-");return d[d.length-1]}},a(document).ready(function(){inlineEditPost.init()}),a(document).on("heartbeat-tick.wp-check-locked-posts",function(b,c){var d=c["wp-check-locked-posts"]||{};a("#the-list tr").each(function(b,c){var e,f,g=c.id,h=a(c);d.hasOwnProperty(g)?h.hasClass("wp-locked")||(e=d[g],h.find(".column-title .locked-text").text(e.text),h.find(".check-column checkbox").prop("checked",!1),e.avatar_src&&(f=a('<img class="avatar avatar-18 photo" width="18" height="18" alt="" />').attr("src",e.avatar_src.replace(/&amp;/g,"&")),h.find(".column-title .locked-avatar").empty().append(f)),h.addClass("wp-locked")):h.hasClass("wp-locked")&&h.removeClass("wp-locked").delay(1e3).find(".locked-info span").empty()})}).on("heartbeat-send.wp-check-locked-posts",function(b,c){var d=[];a("#the-list tr").each(function(a,b){b.id&&d.push(b.id)}),d.length&&(c["wp-check-locked-posts"]=d)}).ready(function(){"undefined"!=typeof b&&b.heartbeat&&b.heartbeat.interval(15)})}(jQuery,window.wp);
\ No newline at end of file
+window.wp=window.wp||{};var inlineEditPost;!function(a,b){inlineEditPost={init:function(){var b=this,c=a("#inline-edit"),d=a("#bulk-edit");b.type=a("table.widefat").hasClass("pages")?"page":"post",b.what="#post-",c.keyup(function(a){return 27===a.which?inlineEditPost.revert():void 0}),d.keyup(function(a){return 27===a.which?inlineEditPost.revert():void 0}),a(".cancel",c).click(function(){return inlineEditPost.revert()}),a(".save",c).click(function(){return inlineEditPost.save(this)}),a("td",c).keydown(function(b){return 13!==b.which||a(b.target).hasClass("cancel")?void 0:inlineEditPost.save(this)}),a(".cancel",d).click(function(){return inlineEditPost.revert()}),a('#inline-edit .inline-edit-private input[value="private"]').click(function(){var b=a("input.inline-edit-password-input");a(this).prop("checked")?b.val("").prop("disabled",!0):b.prop("disabled",!1)}),a("#the-list").on("click","a.editinline",function(a){a.preventDefault(),inlineEditPost.edit(this)}),a("#bulk-edit").find("fieldset:first").after(a("#inline-edit fieldset.inline-edit-categories").clone()).siblings("fieldset:last").prepend(a("#inline-edit label.inline-edit-tags").clone()),a('select[name="_status"] option[value="future"]',d).remove(),a("#doaction, #doaction2").click(function(c){var d;b.whichBulkButtonId=a(this).attr("id"),d=b.whichBulkButtonId.substr(2),"edit"===a('select[name="'+d+'"]').val()?(c.preventDefault(),b.setBulk()):a("form#posts-filter tr.inline-editor").length>0&&b.revert()})},toggle:function(b){var c=this;"none"===a(c.what+c.getId(b)).css("display")?c.revert():c.edit(b)},setBulk:function(){var b="",c=this.type,d=!0;return this.revert(),a("#bulk-edit td").attr("colspan",a("th:visible, td:visible",".widefat:first thead").length),a("table.widefat tbody").prepend(a("#bulk-edit")).prepend('<tr class="hidden"></tr>'),a("#bulk-edit").addClass("inline-editor").show(),a('tbody th.check-column input[type="checkbox"]').each(function(){if(a(this).prop("checked")){d=!1;var c,e=a(this).val();c=a("#inline_"+e+" .post_title").html()||inlineEditL10n.notitle,b+='<div id="ttle'+e+'"><a id="_'+e+'" class="ntdelbutton" title="'+inlineEditL10n.ntdeltitle+'">X</a>'+c+"</div>"}}),d?this.revert():(a("#bulk-titles").html(b),a("#bulk-titles a").click(function(){var b=a(this).attr("id").substr(1);a('table.widefat input[value="'+b+'"]').prop("checked",!1),a("#ttle"+b).remove()}),"post"===c&&a("tr.inline-editor textarea[data-wp-taxonomy]").each(function(b,c){a(c).wpTagsSuggest()}),void a("html, body").animate({scrollTop:0},"fast"))},edit:function(b){var c,d,e,f,g,h,i,j,k,l,m,n=this,o=!0;for(n.revert(),"object"==typeof b&&(b=n.getId(b)),c=["post_title","post_name","post_author","_status","jj","mm","aa","hh","mn","ss","post_password","post_format","menu_order"],"page"===n.type&&c.push("post_parent","page_template"),d=a("#inline-edit").clone(!0),a("td",d).attr("colspan",a("th:visible, td:visible",".widefat:first thead").length),a(n.what+b).removeClass("is-expanded").hide().after(d).after('<tr class="hidden"></tr>'),e=a("#inline_"+b),a(':input[name="post_author"] option[value="'+a(".post_author",e).text()+'"]',d).val()||a(':input[name="post_author"]',d).prepend('<option value="'+a(".post_author",e).text()+'">'+a("#"+n.type+"-"+b+" .author").text()+"</option>"),1===a(':input[name="post_author"] option',d).length&&a("label.inline-edit-author",d).hide(),k=0;k<c.length;k++)l=a("."+c[k],e),l.find("img").replaceWith(function(){return this.alt}),l=l.text(),a(':input[name="'+c[k]+'"]',d).val(l);if("open"===a(".comment_status",e).text()&&a('input[name="comment_status"]',d).prop("checked",!0),"open"===a(".ping_status",e).text()&&a('input[name="ping_status"]',d).prop("checked",!0),"sticky"===a(".sticky",e).text()&&a('input[name="sticky"]',d).prop("checked",!0),a(".post_category",e).each(function(){var c,e=a(this).text();e&&(c=a(this).attr("id").replace("_"+b,""),a("ul."+c+"-checklist :checkbox",d).val(e.split(",")))}),a(".tags_input",e).each(function(){var c=a(this),e=a(this).attr("id").replace("_"+b,""),f=a("textarea.tax_input_"+e,d),g=inlineEditL10n.comma;c.find("img").replaceWith(function(){return this.alt}),c=c.text(),c&&(","!==g&&(c=c.replace(/,/g,g)),f.val(c)),f.wpTagsSuggest()}),f=a("._status",e).text(),"future"!==f&&a('select[name="_status"] option[value="future"]',d).remove(),m=a(".inline-edit-password-input").prop("disabled",!1),"private"===f&&(a('input[name="keep_private"]',d).prop("checked",!0),m.val("").prop("disabled",!0)),g=a('select[name="post_parent"] option[value="'+b+'"]',d),g.length>0){for(h=g[0].className.split("-")[1],i=g;o&&(i=i.next("option"),0!==i.length);)j=i[0].className.split("-")[1],h>=j?o=!1:(i.remove(),i=g);g.remove()}return a(d).attr("id","edit-"+b).addClass("inline-editor").show(),a(".ptitle",d).focus(),!1},save:function(c){var d,e,f=a(".post_status_page").val()||"";return"object"==typeof c&&(c=this.getId(c)),a("table.widefat .spinner").addClass("is-active"),d={action:"inline-save",post_type:typenow,post_ID:c,edit_date:"true",post_status:f},e=a("#edit-"+c).find(":input").serialize(),d=e+"&"+a.param(d),a.post(ajaxurl,d,function(d){var e=a("#edit-"+c+" .inline-edit-save .error");a("table.widefat .spinner").removeClass("is-active"),a(".ac_results").hide(),d?-1!==d.indexOf("<tr")?(a(inlineEditPost.what+c).siblings("tr.hidden").addBack().remove(),a("#edit-"+c).before(d).remove(),a(inlineEditPost.what+c).hide().fadeIn(400,function(){a(this).find(".editinline").focus(),b.a11y.speak(inlineEditL10n.saved)})):(d=d.replace(/<.[^<>]*?>/g,""),e.html(d).show(),b.a11y.speak(e.text())):(e.html(inlineEditL10n.error).show(),b.a11y.speak(inlineEditL10n.error))},"html"),!1},revert:function(){var b=a(".widefat"),c=a(".inline-editor",b).attr("id");return c&&(a(".spinner",b).removeClass("is-active"),a(".ac_results").hide(),"bulk-edit"===c?(a("#bulk-edit",b).removeClass("inline-editor").hide().siblings(".hidden").remove(),a("#bulk-titles").empty(),a("#inlineedit").append(a("#bulk-edit")),a("#"+inlineEditPost.whichBulkButtonId).focus()):(a("#"+c).siblings("tr.hidden").addBack().remove(),c=c.substr(c.lastIndexOf("-")+1),a(this.what+c).show().find(".editinline").focus())),!1},getId:function(b){var c=a(b).closest("tr").attr("id"),d=c.split("-");return d[d.length-1]}},a(document).ready(function(){inlineEditPost.init()}),a(document).on("heartbeat-tick.wp-check-locked-posts",function(b,c){var d=c["wp-check-locked-posts"]||{};a("#the-list tr").each(function(b,c){var e,f,g=c.id,h=a(c);d.hasOwnProperty(g)?h.hasClass("wp-locked")||(e=d[g],h.find(".column-title .locked-text").text(e.text),h.find(".check-column checkbox").prop("checked",!1),e.avatar_src&&(f=a('<img class="avatar avatar-18 photo" width="18" height="18" alt="" />').attr("src",e.avatar_src.replace(/&amp;/g,"&")),h.find(".column-title .locked-avatar").empty().append(f)),h.addClass("wp-locked")):h.hasClass("wp-locked")&&h.removeClass("wp-locked").delay(1e3).find(".locked-info span").empty()})}).on("heartbeat-send.wp-check-locked-posts",function(b,c){var d=[];a("#the-list tr").each(function(a,b){b.id&&d.push(b.id)}),d.length&&(c["wp-check-locked-posts"]=d)}).ready(function(){"undefined"!=typeof b&&b.heartbeat&&b.heartbeat.interval(15)})}(jQuery,window.wp);
\ No newline at end of file
diff --git a/wp-admin/js/tags-box.js b/wp-admin/js/tags-box.js
index af823ac4e6..d4cad9fb24 100644
--- a/wp-admin/js/tags-box.js
+++ b/wp-admin/js/tags-box.js
@@ -4,6 +4,8 @@
 var tagBox, array_unique_noempty;
 
 ( function( $ ) {
+	var tagDelimiter = ( window.tagsSuggestL10n && window.tagsSuggestL10n.tagDelimiter ) || ',';
+
 	// Return an array with any duplicate, whitespace or empty values removed
 	array_unique_noempty = function( array ) {
 		var out = [];
@@ -20,13 +22,17 @@ var tagBox, array_unique_noempty;
 	};
 
 	tagBox = {
-		clean : function(tags) {
-			var comma = window.tagsBoxL10n.tagDelimiter;
-			if ( ',' !== comma )
-				tags = tags.replace(new RegExp(comma, 'g'), ',');
+		clean : function( tags ) {
+			if ( ',' !== tagDelimiter ) {
+				tags = tags.replace( new RegExp( tagDelimiter, 'g' ), ',' );
+			}
+
 			tags = tags.replace(/\s*,\s*/g, ',').replace(/,+/g, ',').replace(/[,\s]+$/, '').replace(/^[,\s]+/, '');
-			if ( ',' !== comma )
-				tags = tags.replace(/,/g, comma);
+
+			if ( ',' !== tagDelimiter ) {
+				tags = tags.replace( /,/g, tagDelimiter );
+			}
+
 			return tags;
 		},
 
@@ -35,8 +41,7 @@ var tagBox, array_unique_noempty;
 				num = id.split('-check-num-')[1],
 				taxbox = $(el).closest('.tagsdiv'),
 				thetags = taxbox.find('.the-tags'),
-				comma = window.tagsBoxL10n.tagDelimiter,
-				current_tags = thetags.val().split( comma ),
+				current_tags = thetags.val().split( tagDelimiter ),
 				new_tags = [];
 
 			delete current_tags[num];
@@ -48,7 +53,7 @@ var tagBox, array_unique_noempty;
 				}
 			});
 
-			thetags.val( this.clean( new_tags.join( comma ) ) );
+			thetags.val( this.clean( new_tags.join( tagDelimiter ) ) );
 
 			this.quickClicks( taxbox );
 			return false;
@@ -65,7 +70,7 @@ var tagBox, array_unique_noempty;
 
 			disabled = thetags.prop('disabled');
 
-			current_tags = thetags.val().split( window.tagsBoxL10n.tagDelimiter );
+			current_tags = thetags.val().split( tagDelimiter );
 			tagchecklist.empty();
 
 			$.each( current_tags, function( key, val ) {
@@ -106,8 +111,7 @@ var tagBox, array_unique_noempty;
 		flushTags : function( el, a, f ) {
 			var tagsval, newtags, text,
 				tags = $( '.the-tags', el ),
-				newtag = $( 'input.newtag', el ),
-				comma = window.tagsBoxL10n.tagDelimiter;
+				newtag = $( 'input.newtag', el );
 
 			a = a || false;
 
@@ -118,10 +122,10 @@ var tagBox, array_unique_noempty;
 			}
 
 			tagsval = tags.val();
-			newtags = tagsval ? tagsval + comma + text : text;
+			newtags = tagsval ? tagsval + tagDelimiter + text : text;
 
 			newtags = this.clean( newtags );
-			newtags = array_unique_noempty( newtags.split( comma ) ).join( comma );
+			newtags = array_unique_noempty( newtags.split( tagDelimiter ) ).join( tagDelimiter );
 			tags.val( newtags );
 			this.quickClicks( el );
 
@@ -153,32 +157,29 @@ var tagBox, array_unique_noempty;
 		},
 
 		init : function() {
-			var t = this, ajaxtag = $('div.ajaxtag');
+			var ajaxtag = $('div.ajaxtag');
 
 			$('.tagsdiv').each( function() {
-				tagBox.quickClicks(this);
+				tagBox.quickClicks( this );
 			});
 
-			$('.tagadd', ajaxtag).click(function(){
-				t.flushTags( $(this).closest('.tagsdiv') );
+			$( '.tagadd', ajaxtag ).click( function() {
+				tagBox.flushTags( $( this ).closest( '.tagsdiv' ) );
 			});
 
-			$('input.newtag', ajaxtag).keyup(function(e){
-				if ( 13 == e.which ) {
-					tagBox.flushTags( $(this).closest('.tagsdiv') );
-					return false;
+			$( 'input.newtag', ajaxtag ).keyup( function( event ) {
+				if ( 13 == event.which ) {
+					tagBox.flushTags( $( this ).closest( '.tagsdiv' ) );
+					event.preventDefault();
+					event.stopPropagation();
 				}
-			}).keypress(function(e){
-				if ( 13 == e.which ) {
-					e.preventDefault();
-					return false;
+			}).keypress( function( event ) {
+				if ( 13 == event.which ) {
+					event.preventDefault();
+					event.stopPropagation();
 				}
-			}).each( function() {
-				var tax = $(this).closest('div.tagsdiv').attr('id');
-				$(this).suggest(
-					ajaxurl + '?action=ajax-tag-search&tax=' + tax,
-					{ delay: 500, minchars: 2, multiple: true, multipleSep: window.tagsBoxL10n.tagDelimiter }
-				);
+			}).each( function( i, element ) {
+				$( element ).wpTagsSuggest();
 			});
 
 			// save tags on post save/publish
diff --git a/wp-admin/js/tags-box.min.js b/wp-admin/js/tags-box.min.js
index 7ab4c3c9ed..151762c311 100644
--- a/wp-admin/js/tags-box.min.js
+++ b/wp-admin/js/tags-box.min.js
@@ -1 +1 @@
-var tagBox,array_unique_noempty;!function(a){array_unique_noempty=function(b){var c=[];return a.each(b,function(b,d){d=a.trim(d),d&&-1===a.inArray(d,c)&&c.push(d)}),c},tagBox={clean:function(a){var b=window.tagsBoxL10n.tagDelimiter;return","!==b&&(a=a.replace(new RegExp(b,"g"),",")),a=a.replace(/\s*,\s*/g,",").replace(/,+/g,",").replace(/[,\s]+$/,"").replace(/^[,\s]+/,""),","!==b&&(a=a.replace(/,/g,b)),a},parseTags:function(b){var c=b.id,d=c.split("-check-num-")[1],e=a(b).closest(".tagsdiv"),f=e.find(".the-tags"),g=window.tagsBoxL10n.tagDelimiter,h=f.val().split(g),i=[];return delete h[d],a.each(h,function(b,c){c=a.trim(c),c&&i.push(c)}),f.val(this.clean(i.join(g))),this.quickClicks(e),!1},quickClicks:function(b){var c,d,e=a(".the-tags",b),f=a(".tagchecklist",b),g=a(b).attr("id");e.length&&(d=e.prop("disabled"),c=e.val().split(window.tagsBoxL10n.tagDelimiter),f.empty(),a.each(c,function(b,c){var e,h;c=a.trim(c),c&&(e=a("<span />").text(c),d||(h=a('<a id="'+g+"-check-num-"+b+'" class="ntdelbutton" tabindex="0">X</a>'),h.on("click keypress",function(b){"click"!==b.type&&13!==b.keyCode||(13===b.keyCode&&a(this).closest(".tagsdiv").find("input.newtag").focus(),tagBox.parseTags(this))}),e.prepend("&nbsp;").prepend(h)),f.append(e))}))},flushTags:function(b,c,d){var e,f,g,h=a(".the-tags",b),i=a("input.newtag",b),j=window.tagsBoxL10n.tagDelimiter;return c=c||!1,g=c?a(c).text():i.val(),"undefined"==typeof g?!1:(e=h.val(),f=e?e+j+g:g,f=this.clean(f),f=array_unique_noempty(f.split(j)).join(j),h.val(f),this.quickClicks(b),c||i.val(""),"undefined"==typeof d&&i.focus(),!1)},get:function(b){var c=b.substr(b.indexOf("-")+1);a.post(ajaxurl,{action:"get-tagcloud",tax:c},function(d,e){0!==d&&"success"==e&&(d=a('<p id="tagcloud-'+c+'" class="the-tagcloud">'+d+"</p>"),a("a",d).click(function(){return tagBox.flushTags(a("#"+c),this),!1}),a("#"+b).after(d))})},init:function(){var b=this,c=a("div.ajaxtag");a(".tagsdiv").each(function(){tagBox.quickClicks(this)}),a(".tagadd",c).click(function(){b.flushTags(a(this).closest(".tagsdiv"))}),a("input.newtag",c).keyup(function(b){return 13==b.which?(tagBox.flushTags(a(this).closest(".tagsdiv")),!1):void 0}).keypress(function(a){return 13==a.which?(a.preventDefault(),!1):void 0}).each(function(){var b=a(this).closest("div.tagsdiv").attr("id");a(this).suggest(ajaxurl+"?action=ajax-tag-search&tax="+b,{delay:500,minchars:2,multiple:!0,multipleSep:window.tagsBoxL10n.tagDelimiter})}),a("#post").submit(function(){a("div.tagsdiv").each(function(){tagBox.flushTags(this,!1,1)})}),a(".tagcloud-link").click(function(){return tagBox.get(a(this).attr("id")),a(this).unbind().click(function(){return a(this).siblings(".the-tagcloud").toggle(),!1}),!1})}}}(jQuery);
\ No newline at end of file
+var tagBox,array_unique_noempty;!function(a){var b=window.tagsSuggestL10n&&window.tagsSuggestL10n.tagDelimiter||",";array_unique_noempty=function(b){var c=[];return a.each(b,function(b,d){d=a.trim(d),d&&-1===a.inArray(d,c)&&c.push(d)}),c},tagBox={clean:function(a){return","!==b&&(a=a.replace(new RegExp(b,"g"),",")),a=a.replace(/\s*,\s*/g,",").replace(/,+/g,",").replace(/[,\s]+$/,"").replace(/^[,\s]+/,""),","!==b&&(a=a.replace(/,/g,b)),a},parseTags:function(c){var d=c.id,e=d.split("-check-num-")[1],f=a(c).closest(".tagsdiv"),g=f.find(".the-tags"),h=g.val().split(b),i=[];return delete h[e],a.each(h,function(b,c){c=a.trim(c),c&&i.push(c)}),g.val(this.clean(i.join(b))),this.quickClicks(f),!1},quickClicks:function(c){var d,e,f=a(".the-tags",c),g=a(".tagchecklist",c),h=a(c).attr("id");f.length&&(e=f.prop("disabled"),d=f.val().split(b),g.empty(),a.each(d,function(b,c){var d,f;c=a.trim(c),c&&(d=a("<span />").text(c),e||(f=a('<a id="'+h+"-check-num-"+b+'" class="ntdelbutton" tabindex="0">X</a>'),f.on("click keypress",function(b){"click"!==b.type&&13!==b.keyCode||(13===b.keyCode&&a(this).closest(".tagsdiv").find("input.newtag").focus(),tagBox.parseTags(this))}),d.prepend("&nbsp;").prepend(f)),g.append(d))}))},flushTags:function(c,d,e){var f,g,h,i=a(".the-tags",c),j=a("input.newtag",c);return d=d||!1,h=d?a(d).text():j.val(),"undefined"==typeof h?!1:(f=i.val(),g=f?f+b+h:h,g=this.clean(g),g=array_unique_noempty(g.split(b)).join(b),i.val(g),this.quickClicks(c),d||j.val(""),"undefined"==typeof e&&j.focus(),!1)},get:function(b){var c=b.substr(b.indexOf("-")+1);a.post(ajaxurl,{action:"get-tagcloud",tax:c},function(d,e){0!==d&&"success"==e&&(d=a('<p id="tagcloud-'+c+'" class="the-tagcloud">'+d+"</p>"),a("a",d).click(function(){return tagBox.flushTags(a("#"+c),this),!1}),a("#"+b).after(d))})},init:function(){var b=a("div.ajaxtag");a(".tagsdiv").each(function(){tagBox.quickClicks(this)}),a(".tagadd",b).click(function(){tagBox.flushTags(a(this).closest(".tagsdiv"))}),a("input.newtag",b).keyup(function(b){13==b.which&&(tagBox.flushTags(a(this).closest(".tagsdiv")),b.preventDefault(),b.stopPropagation())}).keypress(function(a){13==a.which&&(a.preventDefault(),a.stopPropagation())}).each(function(b,c){a(c).wpTagsSuggest()}),a("#post").submit(function(){a("div.tagsdiv").each(function(){tagBox.flushTags(this,!1,1)})}),a(".tagcloud-link").click(function(){return tagBox.get(a(this).attr("id")),a(this).unbind().click(function(){return a(this).siblings(".the-tagcloud").toggle(),!1}),!1})}}}(jQuery);
\ No newline at end of file
diff --git a/wp-admin/js/tags-suggest.js b/wp-admin/js/tags-suggest.js
new file mode 100644
index 0000000000..b9e1632120
--- /dev/null
+++ b/wp-admin/js/tags-suggest.js
@@ -0,0 +1,167 @@
+( function( $ ) {
+	var tempID = 0;
+	var separator = ( window.tagsSuggestL10n && window.tagsSuggestL10n.tagDelimiter ) || ',';
+
+	function split( val ) {
+		return val.split( new RegExp( separator + '\\s*' ) );
+	}
+
+	function getLast( term ) {
+		return split( term ).pop();
+	}
+
+	$.fn.wpTagsSuggest = function( options ) {
+		var cache;
+		var last;
+		var $element = $( this );
+
+		options = options || {};
+		
+		var taxonomy = options.taxonomy || $element.attr( 'data-wp-taxonomy' ) || 'post_tag';
+		
+		delete( options.taxonomy );
+
+		options = $.extend( {
+			source: function( request, response ) {				
+				var term;
+
+				if ( last === request.term ) {
+					response( cache );
+					return;
+				}
+
+				term = getLast( request.term );
+
+				$.get( window.ajaxurl, {
+					action: 'ajax-tag-search',
+					tax: taxonomy,
+					q: term
+				} ).always( function() {
+					$element.removeClass( 'ui-autocomplete-loading' ); // UI fails to remove this sometimes?
+				} ).done( function( data ) {
+					var value;
+					var terms = [];
+
+					if ( data ) {
+						data = data.split( '\n' );
+
+						for ( value in data ) {
+							var id = ++tempID;
+
+							terms.push({
+								id: id,
+								name: data[value]
+							});
+						}
+
+						cache = terms;
+						response( terms );
+					} else {
+						response( terms );
+					}
+				} );
+
+				last = request.term;
+			},
+			focus: function( event, ui ) {
+				$element.attr( 'aria-activedescendant', 'wp-tags-autocomplete-' + ui.item.id );
+
+				// Don't empty the input field when using the arrow keys to
+				// highlight items. See api.jqueryui.com/autocomplete/#event-focus
+				event.preventDefault();
+			},
+			select: function( event, ui ) {
+				var tags = split( $element.val() );
+				// Remove the last user input.
+				tags.pop();
+				// Append the new tag and an empty element to get one more separator at the end.
+				tags.push( ui.item.name, '' );
+
+				$element.val( tags.join( separator + ' ' ) );
+
+				if ( $.ui.keyCode.TAB === event.keyCode ) {
+					if ( typeof window.uiAutocompleteL10n !== 'undefined' ) {
+						// Audible confirmation message when a tag has been selected.
+						window.wp.a11y.speak( window.uiAutocompleteL10n.itemSelected );
+					}
+
+					event.preventDefault();
+				} else if ( $.ui.keyCode.ENTER === event.keyCode ) {
+					// Do not close Quick Edit / Bulk Edit
+					event.preventDefault();
+					event.stopPropagation();
+				}
+
+				return false;
+			},
+			open: function() {
+				$element.attr( 'aria-expanded', 'true' );
+			},
+			close: function() {
+				$element.attr( 'aria-expanded', 'false' );
+			},
+			minLength: 2,
+			position: {
+				my: 'left top+2'
+			},
+			messages: {
+				noResults: ( typeof window.uiAutocompleteL10n !== 'undefined' ) ? window.uiAutocompleteL10n.noResults : '',
+				results: function( number ) {
+					if ( typeof window.uiAutocompleteL10n !== 'undefined' ) {
+						if ( number > 1 ) {
+							return window.uiAutocompleteL10n.manyResults.replace( '%d', number );
+						}
+
+						return window.uiAutocompleteL10n.oneResult;
+					}
+				}
+			}
+		}, options );
+
+		$element.on( 'keydown', function() {
+			$element.removeAttr( 'aria-activedescendant' );
+		} )
+		.autocomplete( options )
+		.autocomplete( 'instance' )._renderItem = function( ul, item ) {
+			return $( '<li role="option" id="wp-tags-autocomplete-' + item.id + '">' )
+				.text( item.name )
+				.appendTo( ul );
+		};
+
+		$element.attr( {
+			'role': 'combobox',
+			'aria-autocomplete': 'list',
+			'aria-expanded': 'false',
+			'aria-owns': $element.autocomplete( 'widget' ).attr( 'id' )
+		} )
+		.on( 'focus', function() {
+			var inputValue = split( $element.val() ).pop();
+
+			// Don't trigger a search if the field is empty.
+			// Also, avoids screen readers announce `No search results`.
+			if ( inputValue ) {
+				$element.autocomplete( 'search' );
+			}
+		} )
+		// Returns a jQuery object containing the menu element.
+		.autocomplete( 'widget' )
+			.addClass( 'wp-tags-autocomplete' )
+			.attr( 'role', 'listbox' )
+			.removeAttr( 'tabindex' ) // Remove the `tabindex=0` attribute added by jQuery UI.
+
+			// Looks like Safari and VoiceOver need an `aria-selected` attribute. See ticket #33301.
+			// The `menufocus` and `menublur` events are the same events used to add and remove
+			// the `ui-state-focus` CSS class on the menu items. See jQuery UI Menu Widget.
+			.on( 'menufocus', function( event, ui ) {
+				ui.item.attr( 'aria-selected', 'true' );
+			})
+			.on( 'menublur', function() {
+				// The `menublur` event returns an object where the item is `null`
+				// so we need to find the active item with other means.
+				$( this ).find( '[aria-selected="true"]' ).removeAttr( 'aria-selected' );
+			});
+			
+		return this;
+	};
+
+}( jQuery ) );
diff --git a/wp-admin/js/tags-suggest.min.js b/wp-admin/js/tags-suggest.min.js
new file mode 100644
index 0000000000..bec201256b
--- /dev/null
+++ b/wp-admin/js/tags-suggest.min.js
@@ -0,0 +1 @@
+!function(a){function b(a){return a.split(new RegExp(e+"\\s*"))}function c(a){return b(a).pop()}var d=0,e=window.tagsSuggestL10n&&window.tagsSuggestL10n.tagDelimiter||",";a.fn.wpTagsSuggest=function(f){var g,h,i=a(this);f=f||{};var j=f.taxonomy||i.attr("data-wp-taxonomy")||"post_tag";return delete f.taxonomy,f=a.extend({source:function(b,e){var f;return h===b.term?void e(g):(f=c(b.term),a.get(window.ajaxurl,{action:"ajax-tag-search",tax:j,q:f}).always(function(){i.removeClass("ui-autocomplete-loading")}).done(function(a){var b,c=[];if(a){a=a.split("\n");for(b in a){var f=++d;c.push({id:f,name:a[b]})}g=c,e(c)}else e(c)}),void(h=b.term))},focus:function(a,b){i.attr("aria-activedescendant","wp-tags-autocomplete-"+b.item.id),a.preventDefault()},select:function(c,d){var f=b(i.val());return f.pop(),f.push(d.item.name,""),i.val(f.join(e+" ")),a.ui.keyCode.TAB===c.keyCode?("undefined"!=typeof window.uiAutocompleteL10n&&window.wp.a11y.speak(window.uiAutocompleteL10n.itemSelected),c.preventDefault()):a.ui.keyCode.ENTER===c.keyCode&&(c.preventDefault(),c.stopPropagation()),!1},open:function(){i.attr("aria-expanded","true")},close:function(){i.attr("aria-expanded","false")},minLength:2,position:{my:"left top+2"},messages:{noResults:"undefined"!=typeof window.uiAutocompleteL10n?window.uiAutocompleteL10n.noResults:"",results:function(a){return"undefined"!=typeof window.uiAutocompleteL10n?a>1?window.uiAutocompleteL10n.manyResults.replace("%d",a):window.uiAutocompleteL10n.oneResult:void 0}}},f),i.on("keydown",function(){i.removeAttr("aria-activedescendant")}).autocomplete(f).autocomplete("instance")._renderItem=function(b,c){return a('<li role="option" id="wp-tags-autocomplete-'+c.id+'">').text(c.name).appendTo(b)},i.attr({role:"combobox","aria-autocomplete":"list","aria-expanded":"false","aria-owns":i.autocomplete("widget").attr("id")}).on("focus",function(){var a=b(i.val()).pop();a&&i.autocomplete("search")}).autocomplete("widget").addClass("wp-tags-autocomplete").attr("role","listbox").removeAttr("tabindex").on("menufocus",function(a,b){b.item.attr("aria-selected","true")}).on("menublur",function(){a(this).find('[aria-selected="true"]').removeAttr("aria-selected")}),this}}(jQuery);
\ No newline at end of file
diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index a7019b039f..e67997a994 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -234,6 +234,7 @@ function wp_default_scripts( &$scripts ) {
 		'oneResult' => __( '1 result found. Use up and down arrow keys to navigate.' ),
 		/* translators: %d: Number of results found when using jQuery UI Autocomplete */
 		'manyResults' => __( '%d results found. Use up and down arrow keys to navigate.' ),
+		'itemSelected' => __( 'Item selected.' ),
 	) );
 
 	// deprecated, not used in core, most functionality is included in jQuery 1.3
@@ -241,7 +242,6 @@ function wp_default_scripts( &$scripts ) {
 
 	// jQuery plugins
 	$scripts->add( 'jquery-color', "/wp-includes/js/jquery/jquery.color.min.js", array('jquery'), '2.1.1', 1 );
-	$scripts->add( 'suggest', "/wp-includes/js/jquery/suggest$suffix.js", array('jquery'), '1.1-20110113', 1 );
 	$scripts->add( 'schedule', '/wp-includes/js/jquery/jquery.schedule.js', array('jquery'), '20m', 1 );
 	$scripts->add( 'jquery-query', "/wp-includes/js/jquery/jquery.query.js", array('jquery'), '2.1.7', 1 );
 	$scripts->add( 'jquery-serialize-object', "/wp-includes/js/jquery/jquery.serialize-object.js", array('jquery'), '0.2', 1 );
@@ -249,6 +249,9 @@ function wp_default_scripts( &$scripts ) {
 	$scripts->add( 'jquery-table-hotkeys', "/wp-includes/js/jquery/jquery.table-hotkeys$suffix.js", array('jquery', 'jquery-hotkeys'), false, 1 );
 	$scripts->add( 'jquery-touch-punch', "/wp-includes/js/jquery/jquery.ui.touch-punch.js", array('jquery-ui-widget', 'jquery-ui-mouse'), '0.2.2', 1 );
 
+	// Not used any more, registered for backwards compatibility.
+	$scripts->add( 'suggest', "/wp-includes/js/jquery/suggest$suffix.js", array('jquery'), '1.1-20110113', 1 );
+
 	// Masonry v2 depended on jQuery. v3 does not. The older jquery-masonry handle is a shiv.
 	// It sets jQuery as a dependency, as the theme may have been implicitly loading it this way.
 	$scripts->add( 'imagesloaded', "/wp-includes/js/imagesloaded.min.js", array(), '3.2.0', 1 );
@@ -523,8 +526,10 @@ function wp_default_scripts( &$scripts ) {
 			'postBoxEmptyString' => __( 'Drag boxes here' ),
 		) );
 
-		$scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'suggest' ), false, 1 );
-		did_action( 'init' ) && $scripts->localize( 'tags-box', 'tagsBoxL10n', array(
+		$scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'tags-suggest' ), false, 1 );
+
+		$scripts->add( 'tags-suggest', "/wp-admin/js/tags-suggest$suffix.js", array( 'jquery-ui-autocomplete', 'wp-a11y' ), false, 1 );
+		did_action( 'init' ) && $scripts->localize( 'tags-suggest', 'tagsSuggestL10n', array(
 			'tagDelimiter' => _x( ',', 'tag delimiter' ),
 		) );
 
@@ -584,7 +589,7 @@ function wp_default_scripts( &$scripts ) {
 
 		$scripts->add( 'theme', "/wp-admin/js/theme$suffix.js", array( 'wp-backbone', 'wp-a11y' ), false, 1 );
 
-		$scripts->add( 'inline-edit-post', "/wp-admin/js/inline-edit-post$suffix.js", array( 'jquery', 'suggest', 'wp-a11y' ), false, 1 );
+		$scripts->add( 'inline-edit-post', "/wp-admin/js/inline-edit-post$suffix.js", array( 'jquery', 'tags-suggest', 'wp-a11y' ), false, 1 );
 		did_action( 'init' ) && $scripts->localize( 'inline-edit-post', 'inlineEditL10n', array(
 			'error'      => __( 'Error while saving the changes.' ),
 			'ntdeltitle' => __( 'Remove From Bulk Edit' ),
diff --git a/wp-includes/version.php b/wp-includes/version.php
index deca710072..22a8b346f4 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38796';
+$wp_version = '4.7-alpha-38797';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.