Ticket #34204: 34204.8.diff

Gruntfile.js

@@ -146 +146 @@
                 },
                 cssmin: {
                         options: {
-                                'wp-admin': ['wp-admin', 'color-picker', 'customize-controls', 'customize-widgets', 'customize-nav-menus', 'ie', 'install', 'login', 'press-this', 'deprecated-*']
+                                'wp-admin': ['wp-admin', 'color-picker', 'customize-controls', 'customize-widgets', 'customize-nav-menus', 'ie', 'install', 'login', 'press-this', 'deprecated-*'],
+                                compatibility: 'ie7'
                         },
                         core: {
                                 expand: true,
@@ -233 +234 @@
 
                                         // Exceptions
                                         '!wp-includes/css/dashicons.css',
-                                        '!wp-includes/css/wp-embed-template.css'
+                                        '!wp-includes/css/wp-embed-template.css',
+                                        '!wp-includes/css/wp-embed-template-ie.css'
                                 ]
                         },
                         colors: {

new file src/wp-includes/css/wp-embed-template-ie.css

@@ +1 @@
+/* Dashicons */
+.dashicons {
+        *display: inline;
+        *zoom: 1;
+}
+
+.dashicons-no {
+        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAQAAAAngNWGAAAAcElEQVR4AdXRVxmEMBAGwJMQCUhAIhKQECmRsFJwMFfp7HfP/E8pk0173CuKpt/0R+WaBaaZqogLagBMuh+DdoKbyRCwqZ/SnM0R5oQuZ2UHS8Z6k23qPxZCTrV5UlHMi8bsfHVXP7K/GXZHaTO7S54CWLdHlN2YIwAAAABJRU5ErkJggg==);
+        *background-image: url(../images/embed/close.png);
+}
+
+.dashicons-admin-comments {
+        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAATUlEQVR4AWMYWqCpvUcAiA8A8X9iMFStAD4DG0AKScQNVDZw1MBRAwvIMLCA5jmFlCD4AMQGlOTtBgoNwzQQ3TCKDaTcMMxYN2AYVgAAYPKsEBxN0PIAAAAASUVORK5CYII=);
+        *background-image: url(../images/embed/comment.png);
+        *background-position: 0 0;
+}
+
+.wp-embed-comments a:hover .dashicons-admin-comments {
+        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAATElEQVR4AWMYYqB4lQAQHwDi/8RgqFoBfAY2gBSSiBuobOCogaMGFpBhYAEdcwrhIPgAxAaU5O0GCg3DNBDdMIoNpNwwzFg3YBhWAABG71qAFYcFqgAAAABJRU5ErkJggg==);
+        *background-image: url(../images/embed/comment.png);
+        *background-position: 0 -40px;
+}
+
+.dashicons-share {
+        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAc0lEQVR4AWMYfqCpvccAiBcA8X8gfgDEBZQaeAFkGBoOoMR1/7HgDeQa2ECZgQiDHID4AMwAor0MCmBoQP+HBnwAskFQdgBRkQJViGk7wiAHUr21AYdhDTA1dDOQHl6mPFLokmwoT9j0z3qUFw70L77oDwAiuzCIub1XpQAAAABJRU5ErkJggg==);
+        *background-image: url(../images/embed/share.png);
+        *background-position: 0 0;
+        *display: none;
+}
+
+.js .dashicons-share {
+        *display: inline;
+        *zoom: 1;
+}
+
+
+.wp-embed-share-dialog-open:hover .dashicons-share {
+        background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAc0lEQVR4AWMYhqB4lQEQLwDi/0D8AIgLKDXwAsgwNBxAiev+Y8EbyDWwgTIDEQY5APEBmAFEexkUwNCA/g8N+ABkg6DsAKIiBaoQ03aEQQ6kemsDDsMaYEroZiA9vEx5pNAl2VCesOmf9SgvHOhffNEfAAAMqPR5IEZH5wAAAABJRU5ErkJggg==);
+        *background-image: url(../images/embed/share.png);
+        *background-position: 0 -40px;
+}
+
+.wp-embed {
+        *width: auto;
+}
+
+.wp-embed-site-title a {
+        *display: inline;
+        *zoom: 1;
+}
+
+.wp-embed-site-title,
+.wp-embed-meta {
+        *display: inline;
+        *zoom: 1;
+}
+
+.wp-embed-comments,
+.wp-embed-share {
+        *zoom: 1;
+}
+
+.wp-embed-comments a {
+        *display: inline;
+        *zoom: 1;
+}
+
+.wp-embed-share-tab-button {
+        *display: inline;
+        *zoom: 1;
+}
+ No newline at end of file

src/wp-includes/css/wp-embed-template.css

@@ -46 +46 @@
 
 .dashicons-share {
         background-image: url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M14.5%2012q1.24%200%202.12.88T17.5%2015t-.88%202.12-2.12.88-2.12-.88T11.5%2015q0-.34.09-.69l-4.38-2.3Q6.32%2013%205%2013q-1.24%200-2.12-.88T2%2010t.88-2.12T5%207q1.3%200%202.21.99l4.38-2.3q-.09-.35-.09-.69%200-1.24.88-2.12T14.5%202t2.12.88T17.5%205t-.88%202.12T14.5%208q-1.3%200-2.21-.99l-4.38%202.3Q8%209.66%208%2010t-.09.69l4.38%202.3q.89-.99%202.21-.99z%27%20fill%3D%27%2382878c%27%2F%3E%3C%2Fsvg%3E");
+        display: none;
+}
+
+.js .dashicons-share {
+        display: inline-block;
 }
 
 .wp-embed-share-dialog-open:hover .dashicons-share {
@@ -178 +183 @@
         left: 0;
         right: 0;
         bottom: 0;
+        background-color: #222;
         background-color: rgba(10, 10, 10, 0.9);
         color: #fff;
         opacity: 1;
@@ -254 +260 @@
 }
 
 .wp-embed-share-tab-button {
-        display: inline;
+        display: inline-block;
 }
 
 .wp-embed-share-tab-button button {

src/wp-includes/default-filters.php

@@ -447 +447 @@
 add_action( 'wp_head',                'wp_oembed_add_discovery_links'         );
 add_action( 'wp_head',                'wp_oembed_add_host_js'                 );
 
+add_action( 'embed_head',             'enqueue_embed_scripts',           1    );
 add_action( 'embed_head',             'print_emoji_detection_script'          );
-add_action( 'embed_head',             'print_emoji_styles'                    );
 add_action( 'embed_head',             'print_embed_styles'                    );
 add_action( 'embed_head',             'wp_print_head_scripts',          20    );
 add_action( 'embed_head',             'wp_print_styles',                20    );

new file src/wp-includes/default-filters.php.orig

@@ +1 @@
+<?php
+/**
+ * Sets up the default filters and actions for most
+ * of the WordPress hooks.
+ *
+ * If you need to remove a default hook, this file will
+ * give you the priority for which to use to remove the
+ * hook.
+ *
+ * Not all of the default hooks are found in default-filters.php
+ *
+ * @package WordPress
+ */
+
+// Strip, trim, kses, special chars for string saves
+foreach ( array( 'pre_term_name', 'pre_comment_author_name', 'pre_link_name', 'pre_link_target', 'pre_link_rel', 'pre_user_display_name', 'pre_user_first_name', 'pre_user_last_name', 'pre_user_nickname' ) as $filter ) {
+        add_filter( $filter, 'sanitize_text_field'  );
+        add_filter( $filter, 'wp_filter_kses'       );
+        add_filter( $filter, '_wp_specialchars', 30 );
+}
+
+// Strip, kses, special chars for string display
+foreach ( array( 'term_name', 'comment_author_name', 'link_name', 'link_target', 'link_rel', 'user_display_name', 'user_first_name', 'user_last_name', 'user_nickname' ) as $filter ) {
+        if ( is_admin() ) {
+                // These are expensive. Run only on admin pages for defense in depth.
+                add_filter( $filter, 'sanitize_text_field'  );
+                add_filter( $filter, 'wp_kses_data'       );
+        }
+        add_filter( $filter, '_wp_specialchars', 30 );
+}
+
+// Kses only for textarea saves
+foreach ( array( 'pre_term_description', 'pre_link_description', 'pre_link_notes', 'pre_user_description' ) as $filter ) {
+        add_filter( $filter, 'wp_filter_kses' );
+}
+
+// Kses only for textarea admin displays
+if ( is_admin() ) {
+        foreach ( array( 'term_description', 'link_description', 'link_notes', 'user_description' ) as $filter ) {
+                add_filter( $filter, 'wp_kses_data' );
+        }
+        add_filter( 'comment_text', 'wp_kses_post' );
+}
+
+// Email saves
+foreach ( array( 'pre_comment_author_email', 'pre_user_email' ) as $filter ) {
+        add_filter( $filter, 'trim'           );
+        add_filter( $filter, 'sanitize_email' );
+        add_filter( $filter, 'wp_filter_kses' );
+}
+
+// Email admin display
+foreach ( array( 'comment_author_email', 'user_email' ) as $filter ) {
+        add_filter( $filter, 'sanitize_email' );
+        if ( is_admin() )
+                add_filter( $filter, 'wp_kses_data' );
+}
+
+// Save URL
+foreach ( array( 'pre_comment_author_url', 'pre_user_url', 'pre_link_url', 'pre_link_image',
+        'pre_link_rss', 'pre_post_guid' ) as $filter ) {
+        add_filter( $filter, 'wp_strip_all_tags' );
+        add_filter( $filter, 'esc_url_raw'       );
+        add_filter( $filter, 'wp_filter_kses'    );
+}
+
+// Display URL
+foreach ( array( 'user_url', 'link_url', 'link_image', 'link_rss', 'comment_url', 'post_guid' ) as $filter ) {
+        if ( is_admin() )
+                add_filter( $filter, 'wp_strip_all_tags' );
+        add_filter( $filter, 'esc_url'           );
+        if ( is_admin() )
+                add_filter( $filter, 'wp_kses_data'    );
+}
+
+// Slugs
+add_filter( 'pre_term_slug', 'sanitize_title' );
+
+// Keys
+foreach ( array( 'pre_post_type', 'pre_post_status', 'pre_post_comment_status', 'pre_post_ping_status' ) as $filter ) {
+        add_filter( $filter, 'sanitize_key' );
+}
+
+// Mime types
+add_filter( 'pre_post_mime_type', 'sanitize_mime_type' );
+add_filter( 'post_mime_type', 'sanitize_mime_type' );
+
+// Places to balance tags on input
+foreach ( array( 'content_save_pre', 'excerpt_save_pre', 'comment_save_pre', 'pre_comment_content' ) as $filter ) {
+        add_filter( $filter, 'convert_invalid_entities' );
+        add_filter( $filter, 'balanceTags', 50 );
+}
+
+// Format strings for display.
+foreach ( array( 'comment_author', 'term_name', 'link_name', 'link_description', 'link_notes', 'bloginfo', 'wp_title', 'widget_title' ) as $filter ) {
+        add_filter( $filter, 'wptexturize'   );
+        add_filter( $filter, 'convert_chars' );
+        add_filter( $filter, 'esc_html'      );
+}
+
+// Format WordPress
+foreach ( array( 'the_content', 'the_title', 'wp_title' ) as $filter )
+        add_filter( $filter, 'capital_P_dangit', 11 );
+add_filter( 'comment_text', 'capital_P_dangit', 31 );
+
+// Format titles
+foreach ( array( 'single_post_title', 'single_cat_title', 'single_tag_title', 'single_month_title', 'nav_menu_attr_title', 'nav_menu_description' ) as $filter ) {
+        add_filter( $filter, 'wptexturize' );
+        add_filter( $filter, 'strip_tags'  );
+}
+
+// Format text area for display.
+foreach ( array( 'term_description' ) as $filter ) {
+        add_filter( $filter, 'wptexturize'      );
+        add_filter( $filter, 'convert_chars'    );
+        add_filter( $filter, 'wpautop'          );
+        add_filter( $filter, 'shortcode_unautop');
+}
+
+// Format for RSS
+add_filter( 'term_name_rss', 'convert_chars' );
+
+// Pre save hierarchy
+add_filter( 'wp_insert_post_parent', 'wp_check_post_hierarchy_for_loops', 10, 2 );
+add_filter( 'wp_update_term_parent', 'wp_check_term_hierarchy_for_loops', 10, 3 );
+
+// Display filters
+add_filter( 'the_title', 'wptexturize'   );
+add_filter( 'the_title', 'convert_chars' );
+add_filter( 'the_title', 'trim'          );
+
+add_filter( 'the_content', 'wptexturize'                       );
+add_filter( 'the_content', 'convert_smilies'                   );
+add_filter( 'the_content', 'convert_chars'                     );
+add_filter( 'the_content', 'wpautop'                           );
+add_filter( 'the_content', 'shortcode_unautop'                 );
+add_filter( 'the_content', 'prepend_attachment'                );
+add_filter( 'the_content', 'wp_make_content_images_responsive' );
+
+add_filter( 'the_excerpt',     'wptexturize'      );
+add_filter( 'the_excerpt',     'convert_smilies'  );
+add_filter( 'the_excerpt',     'convert_chars'    );
+add_filter( 'the_excerpt',     'wpautop'          );
+add_filter( 'the_excerpt',     'shortcode_unautop');
+add_filter( 'get_the_excerpt', 'wp_trim_excerpt'  );
+
+add_filter( 'comment_text', 'wptexturize'            );
+add_filter( 'comment_text', 'convert_chars'          );
+add_filter( 'comment_text', 'make_clickable',      9 );
+add_filter( 'comment_text', 'force_balance_tags', 25 );
+add_filter( 'comment_text', 'convert_smilies',    20 );
+add_filter( 'comment_text', 'wpautop',            30 );
+
+add_filter( 'comment_excerpt', 'convert_chars' );
+
+add_filter( 'list_cats',         'wptexturize' );
+
+add_filter( 'wp_sprintf', 'wp_sprintf_l', 10, 2 );
+
+add_filter( 'widget_text', 'balanceTags' );
+
+// RSS filters
+add_filter( 'the_title_rss',      'strip_tags'                    );
+add_filter( 'the_title_rss',      'ent2ncr',                    8 );
+add_filter( 'the_title_rss',      'esc_html'                      );
+add_filter( 'the_content_rss',    'ent2ncr',                    8 );
+add_filter( 'the_content_feed',   'wp_staticize_emoji'            );
+add_filter( 'the_content_feed',   '_oembed_filter_feed_content'   );
+add_filter( 'the_excerpt_rss',    'convert_chars'                 );
+add_filter( 'the_excerpt_rss',    'ent2ncr',                    8 );
+add_filter( 'comment_author_rss', 'ent2ncr',                    8 );
+add_filter( 'comment_text_rss',   'ent2ncr',                    8 );
+add_filter( 'comment_text_rss',   'esc_html'                      );
+add_filter( 'comment_text_rss',   'wp_staticize_emoji'            );
+add_filter( 'bloginfo_rss',       'ent2ncr',                    8 );
+add_filter( 'the_author',         'ent2ncr',                    8 );
+add_filter( 'the_guid',           'esc_url'                       );
+
+// Email filters
+add_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
+
+// Misc filters
+add_filter( 'option_ping_sites',        'privacy_ping_filter'                 );
+add_filter( 'option_blog_charset',      '_wp_specialchars'                    ); // IMPORTANT: This must not be wp_specialchars() or esc_html() or it'll cause an infinite loop
+add_filter( 'option_blog_charset',      '_canonical_charset'                  );
+add_filter( 'option_home',              '_config_wp_home'                     );
+add_filter( 'option_siteurl',           '_config_wp_siteurl'                  );
+add_filter( 'tiny_mce_before_init',     '_mce_set_direction'                  );
+add_filter( 'teeny_mce_before_init',    '_mce_set_direction'                  );
+add_filter( 'pre_kses',                 'wp_pre_kses_less_than'               );
+add_filter( 'sanitize_title',           'sanitize_title_with_dashes',   10, 3 );
+add_action( 'check_comment_flood',      'check_comment_flood_db',       10, 3 );
+add_filter( 'comment_flood_filter',     'wp_throttle_comment_flood',    10, 3 );
+add_filter( 'pre_comment_content',      'wp_rel_nofollow',              15    );
+add_filter( 'comment_email',            'antispambot'                         );
+add_filter( 'option_tag_base',          '_wp_filter_taxonomy_base'            );
+add_filter( 'option_category_base',     '_wp_filter_taxonomy_base'            );
+add_filter( 'the_posts',                '_close_comments_for_old_posts', 10, 2);
+add_filter( 'comments_open',            '_close_comments_for_old_post', 10, 2 );
+add_filter( 'pings_open',               '_close_comments_for_old_post', 10, 2 );
+add_filter( 'editable_slug',            'urldecode'                           );
+add_filter( 'editable_slug',            'esc_textarea'                        );
+add_filter( 'nav_menu_meta_box_object', '_wp_nav_menu_meta_box_object'        );
+add_filter( 'pingback_ping_source_uri', 'pingback_ping_source_uri'            );
+add_filter( 'xmlrpc_pingback_error',    'xmlrpc_pingback_error'               );
+add_filter( 'title_save_pre',           'trim'                                );
+
+add_filter( 'http_request_host_is_external', 'allowed_http_request_hosts', 10, 2 );
+
+// REST API filters.
+add_action( 'xmlrpc_rsd_apis',            'rest_output_rsd' );
+add_action( 'wp_head',                    'rest_output_link_wp_head', 10, 0 );
+add_action( 'template_redirect',          'rest_output_link_header', 11, 0 );
+add_action( 'auth_cookie_malformed',      'rest_cookie_collect_status' );
+add_action( 'auth_cookie_expired',        'rest_cookie_collect_status' );
+add_action( 'auth_cookie_bad_username',   'rest_cookie_collect_status' );
+add_action( 'auth_cookie_bad_hash',       'rest_cookie_collect_status' );
+add_action( 'auth_cookie_valid',          'rest_cookie_collect_status' );
+add_filter( 'rest_authentication_errors', 'rest_cookie_check_errors', 100 );
+
+// Actions
+add_action( 'wp_head',             '_wp_render_title_tag',            1     );
+add_action( 'wp_head',             'wp_enqueue_scripts',              1     );
+add_action( 'wp_head',             'feed_links',                      2     );
+add_action( 'wp_head',             'feed_links_extra',                3     );
+add_action( 'wp_head',             'rsd_link'                               );
+add_action( 'wp_head',             'wlwmanifest_link'                       );
+add_action( 'wp_head',             'adjacent_posts_rel_link_wp_head', 10, 0 );
+add_action( 'wp_head',             'locale_stylesheet'                      );
+add_action( 'publish_future_post', 'check_and_publish_future_post',   10, 1 );
+add_action( 'wp_head',             'noindex',                          1    );
+add_action( 'wp_head',             'print_emoji_detection_script',     7    );
+add_action( 'wp_head',             'wp_print_styles',                  8    );
+add_action( 'wp_head',             'wp_print_head_scripts',            9    );
+add_action( 'wp_head',             'wp_generator'                           );
+add_action( 'wp_head',             'rel_canonical'                          );
+add_action( 'wp_head',             'wp_shortlink_wp_head',            10, 0 );
+add_action( 'wp_head',             'wp_site_icon',                    99    );
+add_action( 'wp_footer',           'wp_print_footer_scripts',         20    );
+add_action( 'template_redirect',   'wp_shortlink_header',             11, 0 );
+add_action( 'wp_print_footer_scripts', '_wp_footer_scripts'                 );
+add_action( 'init',                'check_theme_switched',            99    );
+add_action( 'after_switch_theme',  '_wp_sidebars_changed'                   );
+add_action( 'wp_print_styles',     'print_emoji_styles'                     );
+
+if ( isset( $_GET['replytocom'] ) )
+    add_action( 'wp_head', 'wp_no_robots' );
+
+// Login actions
+add_action( 'login_head',          'wp_print_head_scripts',         9     );
+add_action( 'login_head',          'wp_site_icon',                  99    );
+add_action( 'login_footer',        'wp_print_footer_scripts',       20    );
+add_action( 'login_init',          'send_frame_options_header',     10, 0 );
+
+// Feed Generator Tags
+foreach ( array( 'rss2_head', 'commentsrss2_head', 'rss_head', 'rdf_header', 'atom_head', 'comments_atom_head', 'opml_head', 'app_head' ) as $action ) {
+        add_action( $action, 'the_generator' );
+}
+
+// Feed Site Icon
+add_action( 'atom_head', 'atom_site_icon' );
+add_action( 'rss2_head', 'rss2_site_icon' );
+
+
+// WP Cron
+if ( !defined( 'DOING_CRON' ) )
+        add_action( 'init', 'wp_cron' );
+
+// 2 Actions 2 Furious
+add_action( 'do_feed_rdf',                'do_feed_rdf',                             10, 1 );
+add_action( 'do_feed_rss',                'do_feed_rss',                             10, 1 );
+add_action( 'do_feed_rss2',               'do_feed_rss2',                            10, 1 );
+add_action( 'do_feed_atom',               'do_feed_atom',                            10, 1 );
+add_action( 'do_pings',                   'do_all_pings',                            10, 1 );
+add_action( 'do_robots',                  'do_robots'                                      );
+add_action( 'set_comment_cookies',        'wp_set_comment_cookies',                  10, 2 );
+add_action( 'sanitize_comment_cookies',   'sanitize_comment_cookies'                       );
+add_action( 'admin_print_scripts',        'print_emoji_detection_script'                   );
+add_action( 'admin_print_scripts',        'print_head_scripts',                      20    );
+add_action( 'admin_print_footer_scripts', '_wp_footer_scripts'                             );
+add_action( 'admin_print_styles',         'print_emoji_styles'                             );
+add_action( 'admin_print_styles',         'print_admin_styles',                      20    );
+add_action( 'init',                       'smilies_init',                             5    );
+add_action( 'plugins_loaded',             'wp_maybe_load_widgets',                    0    );
+add_action( 'plugins_loaded',             'wp_maybe_load_embeds',                     0    );
+add_action( 'shutdown',                   'wp_ob_end_flush_all',                      1    );
+// Create a revision whenever a post is updated.
+add_action( 'post_updated',               'wp_save_post_revision',                   10, 1 );
+add_action( 'publish_post',               '_publish_post_hook',                       5, 1 );
+add_action( 'transition_post_status',     '_transition_post_status',                  5, 3 );
+add_action( 'transition_post_status',     '_update_term_count_on_transition_post_status', 10, 3 );
+add_action( 'comment_form',               'wp_comment_form_unfiltered_html_nonce'          );
+add_action( 'wp_scheduled_delete',        'wp_scheduled_delete'                            );
+add_action( 'wp_scheduled_auto_draft_delete', 'wp_delete_auto_drafts'                      );
+add_action( 'admin_init',                 'send_frame_options_header',               10, 0 );
+add_action( 'importer_scheduled_cleanup', 'wp_delete_attachment'                           );
+add_action( 'upgrader_scheduled_cleanup', 'wp_delete_attachment'                           );
+add_action( 'welcome_panel',              'wp_welcome_panel'                               );
+
+// Navigation menu actions
+add_action( 'delete_post',                '_wp_delete_post_menu_item'         );
+add_action( 'delete_term',                '_wp_delete_tax_menu_item',   10, 3 );
+add_action( 'transition_post_status',     '_wp_auto_add_pages_to_menu', 10, 3 );
+
+// Post Thumbnail CSS class filtering
+add_action( 'begin_fetch_post_thumbnail_html', '_wp_post_thumbnail_class_filter_add'    );
+add_action( 'end_fetch_post_thumbnail_html',   '_wp_post_thumbnail_class_filter_remove' );
+
+// Redirect Old Slugs
+add_action( 'template_redirect',  'wp_old_slug_redirect'              );
+add_action( 'post_updated',       'wp_check_for_changed_slugs', 12, 3 );
+add_action( 'attachment_updated', 'wp_check_for_changed_slugs', 12, 3 );
+
+// Nonce check for Post Previews
+add_action( 'init', '_show_post_preview' );
+
+// Output JS to reset window.name for previews
+add_action( 'wp_head', 'wp_post_preview_js', 1 );
+
+// Timezone
+add_filter( 'pre_option_gmt_offset','wp_timezone_override_offset' );
+
+// Admin Color Schemes
+add_action( 'admin_init', 'register_admin_color_schemes', 1);
+add_action( 'admin_color_scheme_picker', 'admin_color_scheme_picker' );
+
+// If the upgrade hasn't run yet, assume link manager is used.
+add_filter( 'default_option_link_manager_enabled', '__return_true' );
+
+// This option no longer exists; tell plugins we always support auto-embedding.
+add_filter( 'default_option_embed_autourls', '__return_true' );
+
+// Default settings for heartbeat
+add_filter( 'heartbeat_settings', 'wp_heartbeat_settings' );
+
+// Check if the user is logged out
+add_action( 'admin_enqueue_scripts', 'wp_auth_check_load' );
+add_filter( 'heartbeat_send',        'wp_auth_check' );
+add_filter( 'heartbeat_nopriv_send', 'wp_auth_check' );
+
+// Default authentication filters
+add_filter( 'authenticate', 'wp_authenticate_username_password',  20, 3 );
+add_filter( 'authenticate', 'wp_authenticate_spam_check',         99    );
+add_filter( 'determine_current_user', 'wp_validate_auth_cookie'          );
+add_filter( 'determine_current_user', 'wp_validate_logged_in_cookie', 20 );
+
+// Split term updates.
+add_action( 'admin_init',        '_wp_check_for_scheduled_split_terms' );
+add_action( 'split_shared_term', '_wp_check_split_default_terms',  10, 4 );
+add_action( 'split_shared_term', '_wp_check_split_terms_in_menus', 10, 4 );
+add_action( 'split_shared_term', '_wp_check_split_nav_menu_terms', 10, 4 );
+add_action( 'wp_split_shared_term_batch', '_wp_batch_split_terms' );
+
+// Email notifications.
+add_action( 'comment_post', 'wp_new_comment_notify_moderator' );
+add_action( 'comment_post', 'wp_new_comment_notify_postauthor' );
+add_action( 'after_password_reset', 'wp_password_change_notification' );
+add_action( 'register_new_user',      'wp_send_new_user_notifications' );
+add_action( 'edit_user_created_user', 'wp_send_new_user_notifications' );
+
+// REST API actions.
+add_action( 'init',          'rest_api_init' );
+add_action( 'rest_api_init', 'rest_api_default_filters', 10, 1 );
+add_action( 'parse_request', 'rest_api_loaded' );
+
+/**
+ * Filters formerly mixed into wp-includes
+ */
+// Theme
+add_action( 'wp_loaded', '_custom_header_background_just_in_time' );
+add_action( 'plugins_loaded', '_wp_customize_include' );
+add_action( 'admin_enqueue_scripts', '_wp_customize_loader_settings' );
+add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
+
+// Calendar widget cache
+add_action( 'save_post', 'delete_get_calendar_cache' );
+add_action( 'delete_post', 'delete_get_calendar_cache' );
+add_action( 'update_option_start_of_week', 'delete_get_calendar_cache' );
+add_action( 'update_option_gmt_offset', 'delete_get_calendar_cache' );
+
+// Author
+add_action( 'transition_post_status', '__clear_multi_author_cache' );
+
+// Post
+add_action( 'init', 'create_initial_post_types', 0 ); // highest priority
+add_action( 'admin_menu', '_add_post_type_submenus' );
+add_action( 'before_delete_post', '_reset_front_page_settings_for_post' );
+add_action( 'wp_trash_post',      '_reset_front_page_settings_for_post' );
+
+// Post Formats
+add_filter( 'request', '_post_format_request' );
+add_filter( 'term_link', '_post_format_link', 10, 3 );
+add_filter( 'get_post_format', '_post_format_get_term' );
+add_filter( 'get_terms', '_post_format_get_terms', 10, 3 );
+add_filter( 'wp_get_object_terms', '_post_format_wp_get_object_terms' );
+
+// KSES
+add_action( 'init', 'kses_init' );
+add_action( 'set_current_user', 'kses_init' );
+
+// Script Loader
+add_action( 'wp_default_scripts', 'wp_default_scripts' );
+add_filter( 'wp_print_scripts', 'wp_just_in_time_script_localization' );
+add_filter( 'print_scripts_array', 'wp_prototype_before_jquery' );
+
+add_action( 'wp_default_styles', 'wp_default_styles' );
+add_filter( 'style_loader_src', 'wp_style_loader_src', 10, 2 );
+
+// Taxonomy
+add_action( 'init', 'create_initial_taxonomies', 0 ); // highest priority
+
+// Canonical
+add_action( 'template_redirect', 'redirect_canonical' );
+add_action( 'template_redirect', 'wp_redirect_admin_locations', 1000 );
+
+// Shortcodes
+add_filter( 'the_content', 'do_shortcode', 11 ); // AFTER wpautop()
+
+// Media
+add_action( 'wp_playlist_scripts', 'wp_playlist_scripts' );
+add_action( 'customize_controls_enqueue_scripts', 'wp_plupload_default_settings' );
+
+// Nav menu
+add_filter( 'nav_menu_item_id', '_nav_menu_item_id_use_once', 10, 2 );
+
+// Widgets
+add_action( 'init', 'wp_widgets_init', 1 );
+
+// Admin Bar
+// Don't remove. Wrong way to disable.
+add_action( 'template_redirect', '_wp_admin_bar_init', 0 );
+add_action( 'admin_init', '_wp_admin_bar_init' );
+add_action( 'before_signup_header', '_wp_admin_bar_init' );
+add_action( 'activate_header', '_wp_admin_bar_init' );
+add_action( 'wp_footer', 'wp_admin_bar_render', 1000 );
+add_action( 'in_admin_header', 'wp_admin_bar_render', 0 );
+
+// Former admin filters that can also be hooked on the front end
+add_action( 'media_buttons', 'media_buttons' );
+add_filter( 'image_send_to_editor', 'image_add_caption', 20, 8 );
+add_filter( 'media_send_to_editor', 'image_media_send_to_editor', 10, 3 );
+
+// Embeds
+add_action( 'rest_api_init',          'wp_oembed_register_route'              );
+add_filter( 'rest_pre_serve_request', '_oembed_rest_pre_serve_request', 10, 4 );
+
+add_action( 'wp_head',                'wp_oembed_add_discovery_links'         );
+add_action( 'wp_head',                'wp_oembed_add_host_js'                 );
+
+add_action( 'embed_head',             'print_emoji_detection_script'          );
+add_action( 'embed_head',             'print_emoji_styles'                    );
+add_action( 'embed_head',             'print_embed_styles'                    );
+add_action( 'embed_head',             'wp_print_head_scripts',          20    );
+add_action( 'embed_head',             'wp_print_styles',                20    );
+add_action( 'embed_head',             'wp_no_robots'                          );
+add_action( 'embed_head',             'rel_canonical'                         );
+add_action( 'embed_head',             'locale_stylesheet'                     );
+
+add_action( 'embed_footer',           'print_embed_scripts'                   );
+add_action( 'embed_footer',           'wp_print_footer_scripts',        20    );
+
+add_filter( 'excerpt_more',           'wp_embed_excerpt_more',          20    );
+add_filter( 'the_excerpt_embed',      'wptexturize'                           );
+add_filter( 'the_excerpt_embed',      'convert_chars'                         );
+add_filter( 'the_excerpt_embed',      'wpautop'                               );
+add_filter( 'the_excerpt_embed',      'shortcode_unautop'                     );
+add_filter( 'the_excerpt_embed',      'wp_embed_excerpt_attachment'           );
+
+add_filter( 'oembed_dataparse',       'wp_filter_oembed_result',        10, 3 );
+add_filter( 'oembed_response_data',   'get_oembed_response_data_rich',  10, 4 );
+
+unset( $filter, $action );

src/wp-includes/embed-functions.php

@@ -372 +372 @@
         wp_enqueue_script( 'wp-embed' );
 }
 
-
 /**
  * Retrieves the URL to embed a specific post in an iframe.
  *
@@ -864 +863 @@
 }
 
 /**
+ * Enqueue embed iframe default CSS and JS & fire do_action('enqueue_embed_scripts')
+ *
+ * Enqueue PNG fallback CSS for embed iframe for legacy versions of IE.
+ *
+ * Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script().
+ * Runs first in oembed_head().
+ *
+ * @since 4.4.0
+ */
+function enqueue_embed_scripts() {
+        wp_enqueue_style( 'open-sans' );
+        wp_enqueue_style( 'wp-embed-template-ie' );
+
+        /**
+         * Fires when scripts and styles are enqueued for the embed iframe.
+         *
+         * @since 4.4.0
+         */
+        do_action( 'enqueue_embed_scripts' );
+}
+
+/**
  * Prints the CSS in the embed iframe header.
  *
  * @since 4.4.0

src/wp-includes/embed-template.php

@@ -14 +14 @@
         header( 'X-WP-embed: true' );
 }
 
-wp_enqueue_style( 'open-sans' );
-
 ?>
 <!DOCTYPE html>
-<html <?php language_attributes(); ?>>
+<html <?php language_attributes(); ?> class="no-js">
 <head>
         <title><?php echo wp_get_document_title(); ?></title>
         <meta http-equiv="X-UA-Compatible" content="IE=edge">

src/wp-includes/js/wp-embed-template.js

@@ -2 +2 @@
         'use strict';
 
         var secret = window.location.hash.replace( /.*secret=([\d\w]{10}).*/, '$1' ),
+                supportedBrowser = ( document.querySelector && window.addEventListener ),
+                loaded = false,
                 resizing;
 
         function sendEmbedMessage( message, value ) {
@@ -13 +15 @@
         }
 
         function onLoad() {
+                if ( loaded ) {
+                        return;
+                }
+                loaded = true;
+
                 var share_dialog = document.querySelector( '.wp-embed-share-dialog' ),
                         share_dialog_open = document.querySelector( '.wp-embed-share-dialog-open' ),
                         share_dialog_close = document.querySelector( '.wp-embed-share-dialog-close' ),
@@ -141 +148 @@
                 }
         }
 
-        document.addEventListener( 'DOMContentLoaded', onLoad, false );
-
         /**
          * Iframe resize handler.
          */
@@ -158 +163 @@
                 }, 100 );
         }
 
-        window.addEventListener( 'resize', onResize, false );
+        if ( supportedBrowser ) {
+                document.documentElement.className = document.documentElement.className.replace( /\bno-js\b/, '' ) + ' js';
+                document.addEventListener( 'DOMContentLoaded', onLoad, false );
+                window.addEventListener( 'load', onLoad, false );
+                window.addEventListener( 'resize', onResize, false );
+        }
 })( window, document );

src/wp-includes/js/wp-embed.js

@@ -1 +1 @@
 (function ( window, document ) {
         'use strict';
 
+        var supportedBrowser = ( document.querySelector && window.addEventListener ),
+                loaded = false;
+
         window.wp = window.wp || {};
 
         if ( !! window.wp.receiveEmbedMessage ) {
@@ -54 +57 @@
                 }
         };
 
-        window.addEventListener( 'message', window.wp.receiveEmbedMessage, false );
-
         function onLoad() {
+                if ( loaded ) {
+                        return;
+                }
+                loaded = true;
+
                 var isIE10 = -1 !== navigator.appVersion.indexOf( 'MSIE 10' ),
                         isIE11 = !!navigator.userAgent.match( /Trident.*rv\:11\./ ),
                         iframes, iframeClone, i;
@@ -68 +74 @@
                         for ( i = 0; i < iframes.length; i++ ) {
                                 iframeClone = iframes[ i ].cloneNode( true );
                                 iframeClone.removeAttribute( 'security' );
-                                iframes[ i ].parentNode.insertBefore( iframeClone, iframes[ i ].nextSibling );
-                                iframes[ i ].parentNode.removeChild( iframes[ i ] );
+                                iframes[ i ].parentNode.replaceChild( iframeClone, iframes[ i ] );
                         }
                 }
         }
 
-        document.addEventListener( 'DOMContentLoaded', onLoad, false );
+        if ( supportedBrowser ) {
+                window.addEventListener( 'message', window.wp.receiveEmbedMessage, false );
+                document.addEventListener( 'DOMContentLoaded', onLoad, false );
+                window.addEventListener( 'load', onLoad, false );
+        }
 })( window, document );

src/wp-includes/script-loader.php

@@ -727 +727 @@
         $styles->add( 'open-sans', $open_sans_font_url );
 
         // Includes CSS
-        $styles->add( 'admin-bar',         "/wp-includes/css/admin-bar$suffix.css", array( 'open-sans', 'dashicons' ) );
-        $styles->add( 'wp-auth-check',     "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
-        $styles->add( 'editor-buttons',    "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
-        $styles->add( 'media-views',       "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
-        $styles->add( 'wp-pointer',        "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
-        $styles->add( 'customize-preview', "/wp-includes/css/customize-preview$suffix.css" );
+        $styles->add( 'admin-bar',            "/wp-includes/css/admin-bar$suffix.css", array( 'open-sans', 'dashicons' ) );
+        $styles->add( 'wp-auth-check',        "/wp-includes/css/wp-auth-check$suffix.css", array( 'dashicons' ) );
+        $styles->add( 'editor-buttons',       "/wp-includes/css/editor$suffix.css", array( 'dashicons' ) );
+        $styles->add( 'media-views',          "/wp-includes/css/media-views$suffix.css", array( 'buttons', 'dashicons', 'wp-mediaelement' ) );
+        $styles->add( 'wp-pointer',           "/wp-includes/css/wp-pointer$suffix.css", array( 'dashicons' ) );
+        $styles->add( 'customize-preview',    "/wp-includes/css/customize-preview$suffix.css" );
+        $styles->add( 'wp-embed-template-ie', "/wp-includes/css/wp-embed-template-ie$suffix.css" );
+        $styles->add_data( 'wp-embed-template-ie', 'conditional', 'lte IE 8' );
 
         // External libraries and friends
         $styles->add( 'imgareaselect',       '/wp-includes/js/imgareaselect/imgareaselect.css', array(), '0.9.8' );