From e3ffbce181cf6f8685c8d7dea11ad1c581a3be1f Mon Sep 17 00:00:00 2001
From: Andrew Ozz <azaozz@git.wordpress.org>
Date: Tue, 17 Jan 2017 01:24:35 +0000
Subject: [PATCH] TinyMCE: strip browser inserted `<u>` and <font>` tags from
 inside links when copying and pasting in IE and Edge.

Fixes #39570.

git-svn-id: https://develop.svn.wordpress.org/trunk@39916 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/js/tinymce/plugins/wordpress/plugin.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js b/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
index 611450e066..20cdcd49ac 100644
--- a/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
+++ b/src/wp-includes/js/tinymce/plugins/wordpress/plugin.js
@@ -543,11 +543,17 @@ tinymce.PluginManager.add( 'wordpress', function( editor ) {
 
 			editor.on( 'PastePostProcess', function( event ) {
 				// Remove empty paragraphs
-				each( dom.select( 'p', event.node ), function( node ) {
+				editor.$( 'p', event.node ).each( function( i, node ) {
 					if ( dom.isEmpty( node ) ) {
 						dom.remove( node );
 					}
 				});
+
+				if ( tinymce.isIE ) {
+					editor.$( 'a', event.node ).find( 'font, u' ).each( function( i, node ) {
+						dom.remove( node, true );
+					});
+				}
 			});
 		}