enmi-conf.org: comparison wp/wp-includes/general-template.php

equal deleted inserted replaced

-:490d5cc509ed
+:cf61fcea0001
 */
 function get_header( $name = null ) {
 	/**
 	 * Fires before the header template file is loaded.
 	 *
-	 * The hook allows a specific header template file to be used in place of the
-	 * default header template file. If your file is called header-new.php,
-	 * you would specify the filename in the hook as get_header( 'new' ).
-	 *
 	 * @since 2.1.0
 	 * @since 2.8.0 $name parameter added.
 	 *
-	 * @param string $name Name of the specific header file to use.
+	 * @param string|null $name Name of the specific header file to use. null for the default header.
 	 */
 	do_action( 'get_header', $name );
 	$templates = array();
 	$name = (string) $name;
-	if ( '' !== $name )
+	if ( '' !== $name ) {
 		$templates[] = "header-{$name}.php";
+	}
 	$templates[] = 'header.php';
-	// Backward compat code will be removed in a future release
+	locate_template( $templates, true );
-	if ('' == locate_template($templates, true))
-		load_template( ABSPATH . WPINC . '/theme-compat/header.php');
 }
 /**
 * Load footer template.
 *
 */
 function get_footer( $name = null ) {
 	/**
 	 * Fires before the footer template file is loaded.
 	 *
-	 * The hook allows a specific footer template file to be used in place of the
-	 * default footer template file. If your file is called footer-new.php,
-	 * you would specify the filename in the hook as get_footer( 'new' ).
-	 *
 	 * @since 2.1.0
 	 * @since 2.8.0 $name parameter added.
 	 *
-	 * @param string $name Name of the specific footer file to use.
+	 * @param string|null $name Name of the specific footer file to use. null for the default footer.
 	 */
 	do_action( 'get_footer', $name );
 	$templates = array();
 	$name = (string) $name;
-	if ( '' !== $name )
+	if ( '' !== $name ) {
 		$templates[] = "footer-{$name}.php";
+	}
-	$templates[] = 'footer.php';
+	$templates[]    = 'footer.php';
-	// Backward compat code will be removed in a future release
-	if ('' == locate_template($templates, true))
+	locate_template( $templates, true );
-		load_template( ABSPATH . WPINC . '/theme-compat/footer.php');
 }
 /**
 * Load sidebar template.
 *
 */
 function get_sidebar( $name = null ) {
 	/**
 	 * Fires before the sidebar template file is loaded.
 	 *
-	 * The hook allows a specific sidebar template file to be used in place of the
-	 * default sidebar template file. If your file is called sidebar-new.php,
-	 * you would specify the filename in the hook as get_sidebar( 'new' ).
-	 *
 	 * @since 2.2.0
 	 * @since 2.8.0 $name parameter added.
 	 *
-	 * @param string $name Name of the specific sidebar file to use.
+	 * @param string|null $name Name of the specific sidebar file to use. null for the default sidebar.
 	 */
 	do_action( 'get_sidebar', $name );
 	$templates = array();
 	$name = (string) $name;
 	if ( '' !== $name )
 		$templates[] = "sidebar-{$name}.php";
 	$templates[] = 'sidebar.php';
-	// Backward compat code will be removed in a future release
+	locate_template( $templates, true );
-	if ('' == locate_template($templates, true))
+}
-		load_template( ABSPATH . WPINC . '/theme-compat/sidebar.php');
-}
+/**
+* Loads a template part into a template.
-/**
+*
-* Load a template part into a template
+* Provides a simple mechanism for child themes to overload reusable sections of code
-*
+* in the theme.
-* Makes it easy for a theme to reuse sections of code in a easy to overload way
-* for child themes.
 *
 * Includes the named template part for a theme or if a name is specified then a
 * specialised part will be included. If the theme contains no {slug}.php file
 * then no template will be included.
 *
 	 * The dynamic portion of the hook name, `$slug`, refers to the slug name
 	 * for the generic template part.
 	 *
 	 * @since 3.0.0
 	 *
-	 * @param string $slug The slug name for the generic template.
+	 * @param string      $slug The slug name for the generic template.
-	 * @param string $name The name of the specialized template.
+	 * @param string|null $name The name of the specialized template.
 	 */
 	do_action( "get_template_part_{$slug}", $slug, $name );
 	$templates = array();
 	$name = (string) $name;
 *
 * Will first attempt to locate the searchform.php file in either the child or
 * the parent, then load it. If it doesn't exist, then the default search form
 * will be displayed. The default search form is HTML, which will be displayed.
 * There is a filter applied to the search form HTML in order to edit or replace
-* it. The filter is 'get_search_form'.
+* it. The filter is {@see 'get_search_form'}.
 *
 * This function is primarily used by themes which want to hardcode the search
 * form into the sidebar and also by the search widget in WordPress.
 *
 * There is also an action that is called whenever the function is run called,
-* 'pre_get_search_form'. This can be useful for outputting JavaScript that the
+* {@see 'pre_get_search_form'}. This can be useful for outputting JavaScript that the
 * search relies on or various formatting that applies to the beginning of the
 * search. To give a few examples of what it can be used for.
 *
 * @since 2.7.0
 *
-* @param boolean $echo Default to echo and not return the form.
+* @param bool $echo Default to echo and not return the form.
-* @return string|null String when retrieving, null when displaying or if searchform.php exists.
+* @return string|void String when $echo is false.
 */
 function get_search_form( $echo = true ) {
 	/**
 	 * Fires before the search form is retrieved, at the start of get_search_form().
 	 *
 	do_action( 'pre_get_search_form' );
 	$format = current_theme_supports( 'html5', 'search-form' ) ? 'html5' : 'xhtml';
 	/**
-	 * Filter the HTML format of the search form.
+	 * Filters the HTML format of the search form.
 	 *
 	 * @since 3.6.0
 	 *
 	 * @param string $format The type of markup to use in the search form.
 	 *                       Accepts 'html5', 'xhtml'.
 	} else {
 		if ( 'html5' == $format ) {
 			$form = '<form role="search" method="get" class="search-form" action="' . esc_url( home_url( '/' ) ) . '">
 				<label>
 					<span class="screen-reader-text">' . _x( 'Search for:', 'label' ) . '</span>
-					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" title="' . esc_attr_x( 'Search for:', 'label' ) . '" />
+					<input type="search" class="search-field" placeholder="' . esc_attr_x( 'Search &hellip;', 'placeholder' ) . '" value="' . get_search_query() . '" name="s" />
 				</label>
 				<input type="submit" class="search-submit" value="'. esc_attr_x( 'Search', 'submit button' ) .'" />
 			</form>';
 		} else {
 			$form = '<form role="search" method="get" id="searchform" class="searchform" action="' . esc_url( home_url( '/' ) ) . '">
 			</form>';
 		}
 	}
 	/**
-	 * Filter the HTML output of the search form.
+	 * Filters the HTML output of the search form.
 	 *
 	 * @since 2.7.0
 	 *
 	 * @param string $form The search form HTML output.
 	 */
 * or log out depending on whether they are currently logged in.
 *
 * @since 1.5.0
 *
 * @param string $redirect Optional path to redirect to on login/logout.
-* @param boolean $echo Default to echo and not return the link.
+* @param bool   $echo     Default to echo and not return the link.
-* @return string|null String when retrieving, null when displaying.
+* @return string|void String when retrieving.
 */
 function wp_loginout($redirect = '', $echo = true) {
 	if ( ! is_user_logged_in() )
 		$link = '<a href="' . esc_url( wp_login_url($redirect) ) . '">' . __('Log in') . '</a>';
 	else
 		$link = '<a href="' . esc_url( wp_logout_url($redirect) ) . '">' . __('Log out') . '</a>';
 	if ( $echo ) {
 		/**
-		 * Filter the HTML output for the Log In/Log Out link.
+		 * Filters the HTML output for the Log In/Log Out link.
 		 *
 		 * @since 1.5.0
 		 *
 		 * @param string $link The HTML link content.
 		 */
 		return apply_filters( 'loginout', $link );
 	}
 }
 /**
-* Returns the Log Out URL.
+* Retrieves the logout URL.
 *
 * Returns the URL that allows the user to log out of the site.
 *
 * @since 2.7.0
 *
 * @param string $redirect Path to redirect to on logout.
-* @return string A log out URL.
+* @return string The logout URL. Note: HTML-encoded via esc_html() in wp_nonce_url().
 */
 function wp_logout_url($redirect = '') {
 	$args = array( 'action' => 'logout' );
 	if ( !empty($redirect) ) {
 		$args['redirect_to'] = urlencode( $redirect );
 	$logout_url = add_query_arg($args, site_url('wp-login.php', 'login'));
 	$logout_url = wp_nonce_url( $logout_url, 'log-out' );
 	/**
-	 * Filter the logout URL.
+	 * Filters the logout URL.
 	 *
 	 * @since 2.8.0
 	 *
-	 * @param string $logout_url The Log Out URL.
+	 * @param string $logout_url The HTML-encoded logout URL.
 	 * @param string $redirect   Path to redirect to on logout.
 	 */
 	return apply_filters( 'logout_url', $logout_url, $redirect );
 }
 /**
-* Returns the Log In URL.
+* Retrieves the login URL.
-*
-* Returns the URL that allows the user to log in to the site.
 *
 * @since 2.7.0
 *
-* @param string $redirect Path to redirect to on login.
+* @param string $redirect     Path to redirect to on log in.
-* @param bool $force_reauth Whether to force reauthorization, even if a cookie is present. Default is false.
+* @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.
-* @return string A log in URL.
+*                             Default false.
+* @return string The login URL. Not HTML-encoded.
 */
 function wp_login_url($redirect = '', $force_reauth = false) {
 	$login_url = site_url('wp-login.php', 'login');
 	if ( !empty($redirect) )
 	if ( $force_reauth )
 		$login_url = add_query_arg('reauth', '1', $login_url);
 	/**
-	 * Filter the login URL.
+	 * Filters the login URL.
 	 *
 	 * @since 2.8.0
 	 * @since 4.2.0 The `$force_reauth` parameter was added.
 	 *
-	 * @param string $login_url    The login URL.
+	 * @param string $login_url    The login URL. Not HTML-encoded.
 	 * @param string $redirect     The path to redirect to on login, if supplied.
 	 * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.
 	 */
 	return apply_filters( 'login_url', $login_url, $redirect, $force_reauth );
 }
 /**
-* Returns the user registration URL.
-*
 * Returns the URL that allows the user to register on the site.
 *
 * @since 3.6.0
 *
 * @return string User registration URL.
 */
 function wp_registration_url() {
 	/**
-	 * Filter the user registration URL.
+	 * Filters the user registration URL.
 	 *
 	 * @since 3.6.0
 	 *
 	 * @param string $register The user registration URL.
 	 */
 	return apply_filters( 'register_url', site_url( 'wp-login.php?action=register', 'login' ) );
 }
 /**
-* Provides a simple login form for use anywhere within WordPress. By default, it echoes
+* Provides a simple login form for use anywhere within WordPress.
-* the HTML immediately. Pass array('echo'=>false) to return the string instead.
+*
+* The login format HTML is echoed by default. Pass a false value for `$echo` to return it instead.
 *
 * @since 3.0.0
 *
-* @param array $args Configuration options to modify the form output.
+* @param array $args {
-* @return string|null String when retrieving, null when displaying.
+*     Optional. Array of options to control the form output. Default empty array.
+*
+*     @type bool   $echo           Whether to display the login form or return the form HTML code.
+*                                  Default true (echo).
+*     @type string $redirect       URL to redirect to. Must be absolute, as in "https://example.com/mypage/".
+*                                  Default is to redirect back to the request URI.
+*     @type string $form_id        ID attribute value for the form. Default 'loginform'.
+*     @type string $label_username Label for the username or email address field. Default 'Username or Email Address'.
+*     @type string $label_password Label for the password field. Default 'Password'.
+*     @type string $label_remember Label for the remember field. Default 'Remember Me'.
+*     @type string $label_log_in   Label for the submit button. Default 'Log In'.
+*     @type string $id_username    ID attribute value for the username field. Default 'user_login'.
+*     @type string $id_password    ID attribute value for the password field. Default 'user_pass'.
+*     @type string $id_remember    ID attribute value for the remember field. Default 'rememberme'.
+*     @type string $id_submit      ID attribute value for the submit button. Default 'wp-submit'.
+*     @type bool   $remember       Whether to display the "rememberme" checkbox in the form.
+*     @type string $value_username Default value for the username field. Default empty.
+*     @type bool   $value_remember Whether the "Remember Me" checkbox should be checked by default.
+*                                  Default false (unchecked).
+*
+* }
+* @return string|void String when retrieving.
 */
 function wp_login_form( $args = array() ) {
 	$defaults = array(
 		'echo' => true,
-		'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'], // Default redirect is back to the current page
+		// Default 'redirect' value takes the user back to the request URI.
+		'redirect' => ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'],
 		'form_id' => 'loginform',
-		'label_username' => __( 'Username' ),
+		'label_username' => __( 'Username or Email Address' ),
 		'label_password' => __( 'Password' ),
 		'label_remember' => __( 'Remember Me' ),
 		'label_log_in' => __( 'Log In' ),
 		'id_username' => 'user_login',
 		'id_password' => 'user_pass',
 		'id_remember' => 'rememberme',
 		'id_submit' => 'wp-submit',
 		'remember' => true,
 		'value_username' => '',
-		'value_remember' => false, // Set this to true to default the "Remember me" checkbox to checked
+		// Set 'value_remember' to true to default the "Remember me" checkbox to checked.
+		'value_remember' => false,
 	);
 	/**
-	 * Filter the default login form output arguments.
+	 * Filters the default login form output arguments.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @see wp_login_form()
 	 *
 	 * @param array $defaults An array of default login form arguments.
 	 */
 	$args = wp_parse_args( $args, apply_filters( 'login_form_defaults', $defaults ) );
 	/**
-	 * Filter content to display at the top of the login form.
+	 * Filters content to display at the top of the login form.
 	 *
 	 * The filter evaluates just following the opening form tag element.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @param array  $args    Array of login form arguments.
 	 */
 	$login_form_top = apply_filters( 'login_form_top', '', $args );
 	/**
-	 * Filter content to display in the middle of the login form.
+	 * Filters content to display in the middle of the login form.
 	 *
 	 * The filter evaluates just following the location where the 'login-password'
 	 * field is displayed.
 	 *
 	 * @since 3.0.0
 	 * @param array  $args    Array of login form arguments.
 	 */
 	$login_form_middle = apply_filters( 'login_form_middle', '', $args );
 	/**
-	 * Filter content to display at the bottom of the login form.
+	 * Filters content to display at the bottom of the login form.
 	 *
 	 * The filter evaluates just preceding the closing form tag element.
 	 *
 	 * @since 3.0.0
 	 *
 				<input type="password" name="pwd" id="' . esc_attr( $args['id_password'] ) . '" class="input" value="" size="20" />
 			</p>
 			' . $login_form_middle . '
 			' . ( $args['remember'] ? '<p class="login-remember"><label><input name="rememberme" type="checkbox" id="' . esc_attr( $args['id_remember'] ) . '" value="forever"' . ( $args['value_remember'] ? ' checked="checked"' : '' ) . ' /> ' . esc_html( $args['label_remember'] ) . '</label></p>' : '' ) . '
 			<p class="login-submit">
-				<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />
+				<input type="submit" name="wp-submit" id="' . esc_attr( $args['id_submit'] ) . '" class="button button-primary" value="' . esc_attr( $args['label_log_in'] ) . '" />
 				<input type="hidden" name="redirect_to" value="' . esc_url( $args['redirect'] ) . '" />
 			</p>
 			' . $login_form_bottom . '
 		</form>';
 	else
 		return $form;
 }
 /**
-* Returns the Lost Password URL.
-*
 * Returns the URL that allows the user to retrieve the lost password
 *
 * @since 2.8.0
 *
 * @param string $redirect Path to redirect to on login.
 * @return string Lost password URL.
 */
 function wp_lostpassword_url( $redirect = '' ) {
 	$args = array( 'action' => 'lostpassword' );
 	if ( !empty($redirect) ) {
-		$args['redirect_to'] = $redirect;
+		$args['redirect_to'] = urlencode( $redirect );
 	}
 	$lostpassword_url = add_query_arg( $args, network_site_url('wp-login.php', 'login') );
 	/**
-	 * Filter the Lost Password URL.
+	 * Filters the Lost Password URL.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @param string $lostpassword_url The lost password page URL.
 	 * @param string $redirect         The path to redirect to on login.
 * not logged in and registration is enabled or to the dashboard if logged in.
 *
 * @since 1.5.0
 *
 * @param string $before Text to output before the link. Default `<li>`.
-* @param string $after Text to output after the link. Default `</li>`.
+* @param string $after  Text to output after the link. Default `</li>`.
-* @param boolean $echo Default to echo and not return the link.
+* @param bool   $echo   Default to echo and not return the link.
-* @return string|null String when retrieving, null when displaying.
+* @return string|void String when retrieving.
 */
 function wp_register( $before = '<li>', $after = '</li>', $echo = true ) {
 	if ( ! is_user_logged_in() ) {
 		if ( get_option('users_can_register') )
 			$link = $before . '<a href="' . esc_url( wp_registration_url() ) . '">' . __('Register') . '</a>' . $after;
 		else
 			$link = '';
+	} elseif ( current_user_can( 'read' ) ) {
+		$link = $before . '<a href="' . admin_url() . '">' . __('Site Admin') . '</a>' . $after;
 	} else {
-		$link = $before . '<a href="' . admin_url() . '">' . __('Site Admin') . '</a>' . $after;
+		$link = '';
 	}
 	/**
-	 * Filter the HTML link to the Registration or Admin page.
+	 * Filters the HTML link to the Registration or Admin page.
 	 *
 	 * Users are sent to the admin page if logged-in, or the registration page
 	 * if enabled and logged-out.
 	 *
 	 * @since 1.5.0
 }
 /**
 * Theme container function for the 'wp_meta' action.
 *
-* The 'wp_meta' action can have several purposes, depending on how you use it,
+* The {@see 'wp_meta'} action can have several purposes, depending on how you use it,
 * but one purpose might have been to allow for theme switching.
 *
 * @since 1.5.0
 *
 * @link https://core.trac.wordpress.org/ticket/1458 Explanation of 'wp_meta' action.
 	 */
 	do_action( 'wp_meta' );
 }
 /**
-* Display information about the blog.
+* Displays information about the current site.
 *
-* @see get_bloginfo() For possible values for the parameter.
 * @since 0.71
 *
-* @param string $show What to display.
+* @see get_bloginfo() For possible `$show` values
-*/
+*
-function bloginfo( $show='' ) {
+* @param string $show Optional. Site information to display. Default empty.
+*/
+function bloginfo( $show = '' ) {
 	echo get_bloginfo( $show, 'display' );
 }
 /**
-* Retrieve information about the blog.
+* Retrieves information about the current site.
 *
-* Some show parameter values are deprecated and will be removed in future
+* Possible values for `$show` include:
-* versions. These options will trigger the {@see _deprecated_argument()}
+*
-* function. The deprecated blog info options are listed in the function
+* - 'name' - Site title (set in Settings > General)
-* contents.
+* - 'description' - Site tagline (set in Settings > General)
-*
+* - 'wpurl' - The WordPress address (URL) (set in Settings > General)
-* The possible values for the 'show' parameter are listed below.
+* - 'url' - The Site address (URL) (set in Settings > General)
-*
+* - 'admin_email' - Admin email (set in Settings > General)
-* 1. url - Blog URI to homepage.
+* - 'charset' - The "Encoding for pages and feeds"  (set in Settings > Reading)
-* 2. wpurl - Blog URI path to WordPress.
+* - 'version' - The current WordPress version
-* 3. description - Secondary title
+* - 'html_type' - The content-type (default: "text/html"). Themes and plugins
-*
+*   can override the default value using the {@see 'pre_option_html_type'} filter
-* The feed URL options can be retrieved from 'rdf_url' (RSS 0.91),
+* - 'text_direction' - The text direction determined by the site's language. is_rtl()
-* 'rss_url' (RSS 1.0), 'rss2_url' (RSS 2.0), or 'atom_url' (Atom feed). The
+*   should be used instead
-* comment feeds can be retrieved from the 'comments_atom_url' (Atom comment
+* - 'language' - Language code for the current site
-* feed) or 'comments_rss2_url' (RSS 2.0 comment feed).
+* - 'stylesheet_url' - URL to the stylesheet for the active theme. An active child theme
+*   will take precedence over this value
+* - 'stylesheet_directory' - Directory path for the active theme.  An active child theme
+*   will take precedence over this value
+* - 'template_url' / 'template_directory' - URL of the active theme's directory. An active
+*   child theme will NOT take precedence over this value
+* - 'pingback_url' - The pingback XML-RPC file URL (xmlrpc.php)
+* - 'atom_url' - The Atom feed URL (/feed/atom)
+* - 'rdf_url' - The RDF/RSS 1.0 feed URL (/feed/rfd)
+* - 'rss_url' - The RSS 0.92 feed URL (/feed/rss)
+* - 'rss2_url' - The RSS 2.0 feed URL (/feed)
+* - 'comments_atom_url' - The comments Atom feed URL (/comments/feed)
+* - 'comments_rss2_url' - The comments RSS 2.0 feed URL (/comments/feed)
+*
+* Some `$show` values are deprecated and will be removed in future versions.
+* These options will trigger the _deprecated_argument() function.
+*
+* Deprecated arguments include:
+*
+* - 'siteurl' - Use 'url' instead
+* - 'home' - Use 'url' instead
 *
 * @since 0.71
 *
-* @param string $show Blog info to retrieve.
+* @global string $wp_version
-* @param string $filter How to filter what is retrieved.
+*
+* @param string $show   Optional. Site info to retrieve. Default empty (site name).
+* @param string $filter Optional. How to filter what is retrieved. Default 'raw'.
 * @return string Mostly string values, might be empty.
 */
 function get_bloginfo( $show = '', $filter = 'raw' ) {
 	switch( $show ) {
 		case 'home' : // DEPRECATED
 		case 'siteurl' : // DEPRECATED
-			_deprecated_argument( __FUNCTION__, '2.2', sprintf(
+			_deprecated_argument( __FUNCTION__, '2.2.0', sprintf(
 				/* translators: 1: 'siteurl'/'home' argument, 2: bloginfo() function name, 3: 'url' argument */
 				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s option instead.' ),
 				'<code>' . $show . '</code>',
 				'<code>bloginfo()</code>',
 				'<code>url</code>'
 		case 'version':
 			global $wp_version;
 			$output = $wp_version;
 			break;
 		case 'language':
-			$output = get_locale();
+			/* translators: Translate this to the correct language tag for your locale,
-			$output = str_replace('_', '-', $output);
+			 * see https://www.w3.org/International/articles/language-tags/ for reference.
+			 * Do not translate into your own language.
+			 */
+			$output = __( 'html_lang_attribute' );
+			if ( 'html_lang_attribute' === $output || preg_match( '/[^a-zA-Z0-9-]/', $output ) ) {
+				$output = is_admin() ? get_user_locale() : get_locale();
+				$output = str_replace( '_', '-', $output );
+			}
 			break;
 		case 'text_direction':
-			_deprecated_argument( __FUNCTION__, '2.2', sprintf(
+			_deprecated_argument( __FUNCTION__, '2.2.0', sprintf(
 				/* translators: 1: 'text_direction' argument, 2: bloginfo() function name, 3: is_rtl() function name */
 				__( 'The %1$s option is deprecated for the family of %2$s functions. Use the %3$s function instead.' ),
 				'<code>' . $show . '</code>',
 				'<code>bloginfo()</code>',
 				'<code>is_rtl()</code>'
 		$url = false;
 	if ( 'display' == $filter ) {
 		if ( $url ) {
 			/**
-			 * Filter the URL returned by get_bloginfo().
+			 * Filters the URL returned by get_bloginfo().
 			 *
 			 * @since 2.0.5
 			 *
 			 * @param mixed $output The URL returned by bloginfo().
 			 * @param mixed $show   Type of information requested.
 			 */
 			$output = apply_filters( 'bloginfo_url', $output, $show );
 		} else {
 			/**
-			 * Filter the site information returned by get_bloginfo().
+			 * Filters the site information returned by get_bloginfo().
 			 *
 			 * @since 0.71
 			 *
 			 * @param mixed $output The requested non-URL site information.
 			 * @param mixed $show   Type of information requested.
 	return $output;
 }
 /**
-* Display title tag with contents.
+* Returns the Site Icon URL.
+*
+* @since 4.3.0
+*
+* @param int    $size    Optional. Size of the site icon. Default 512 (pixels).
+* @param string $url     Optional. Fallback url if no site icon is found. Default empty.
+* @param int    $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
+* @return string Site Icon URL.
+*/
+function get_site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
+	$switched_blog = false;
+	if ( is_multisite() && ! empty( $blog_id ) && (int) $blog_id !== get_current_blog_id() ) {
+		switch_to_blog( $blog_id );
+		$switched_blog = true;
+	}
+	$site_icon_id = get_option( 'site_icon' );
+	if ( $site_icon_id ) {
+		if ( $size >= 512 ) {
+			$size_data = 'full';
+		} else {
+			$size_data = array( $size, $size );
+		}
+		$url = wp_get_attachment_image_url( $site_icon_id, $size_data );
+	}
+	if ( $switched_blog ) {
+		restore_current_blog();
+	}
+	/**
+	 * Filters the site icon URL.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $url     Site icon URL.
+	 * @param int    $size    Size of the site icon.
+	 * @param int    $blog_id ID of the blog to get the site icon for.
+	 */
+	return apply_filters( 'get_site_icon_url', $url, $size, $blog_id );
+}
+/**
+* Displays the Site Icon URL.
+*
+* @since 4.3.0
+*
+* @param int    $size    Optional. Size of the site icon. Default 512 (pixels).
+* @param string $url     Optional. Fallback url if no site icon is found. Default empty.
+* @param int    $blog_id Optional. ID of the blog to get the site icon for. Default current blog.
+*/
+function site_icon_url( $size = 512, $url = '', $blog_id = 0 ) {
+	echo esc_url( get_site_icon_url( $size, $url, $blog_id ) );
+}
+/**
+* Whether the site has a Site Icon.
+*
+* @since 4.3.0
+*
+* @param int $blog_id Optional. ID of the blog in question. Default current blog.
+* @return bool Whether the site has a site icon or not.
+*/
+function has_site_icon( $blog_id = 0 ) {
+	return (bool) get_site_icon_url( 512, '', $blog_id );
+}
+/**
+* Determines whether the site has a custom logo.
+*
+* @since 4.5.0
+*
+* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
+* @return bool Whether the site has a custom logo or not.
+*/
+function has_custom_logo( $blog_id = 0 ) {
+	$switched_blog = false;
+	if ( is_multisite() && ! empty( $blog_id ) && (int) $blog_id !== get_current_blog_id() ) {
+		switch_to_blog( $blog_id );
+		$switched_blog = true;
+	}
+	$custom_logo_id = get_theme_mod( 'custom_logo' );
+	if ( $switched_blog ) {
+		restore_current_blog();
+	}
+	return (bool) $custom_logo_id;
+}
+/**
+* Returns a custom logo, linked to home.
+*
+* @since 4.5.0
+*
+* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
+* @return string Custom logo markup.
+*/
+function get_custom_logo( $blog_id = 0 ) {
+	$html = '';
+	$switched_blog = false;
+	if ( is_multisite() && ! empty( $blog_id ) && (int) $blog_id !== get_current_blog_id() ) {
+		switch_to_blog( $blog_id );
+		$switched_blog = true;
+	}
+	$custom_logo_id = get_theme_mod( 'custom_logo' );
+	// We have a logo. Logo is go.
+	if ( $custom_logo_id ) {
+		$custom_logo_attr = array(
+			'class'    => 'custom-logo',
+			'itemprop' => 'logo',
+		);
+		/*
+		 * If the logo alt attribute is empty, get the site title and explicitly
+		 * pass it to the attributes used by wp_get_attachment_image().
+		 */
+		$image_alt = get_post_meta( $custom_logo_id, '_wp_attachment_image_alt', true );
+		if ( empty( $image_alt ) ) {
+			$custom_logo_attr['alt'] = get_bloginfo( 'name', 'display' );
+		}
+		/*
+		 * If the alt attribute is not empty, there's no need to explicitly pass
+		 * it because wp_get_attachment_image() already adds the alt attribute.
+		 */
+		$html = sprintf( '<a href="%1$s" class="custom-logo-link" rel="home" itemprop="url">%2$s</a>',
+			esc_url( home_url( '/' ) ),
+			wp_get_attachment_image( $custom_logo_id, 'full', false, $custom_logo_attr )
+		);
+	}
+	// If no logo is set but we're in the Customizer, leave a placeholder (needed for the live preview).
+	elseif ( is_customize_preview() ) {
+		$html = sprintf( '<a href="%1$s" class="custom-logo-link" style="display:none;"><img class="custom-logo"/></a>',
+			esc_url( home_url( '/' ) )
+		);
+	}
+	if ( $switched_blog ) {
+		restore_current_blog();
+	}
+	/**
+	 * Filters the custom logo output.
+	 *
+	 * @since 4.5.0
+	 * @since 4.6.0 Added the `$blog_id` parameter.
+	 *
+	 * @param string $html    Custom logo HTML output.
+	 * @param int    $blog_id ID of the blog to get the custom logo for.
+	 */
+	return apply_filters( 'get_custom_logo', $html, $blog_id );
+}
+/**
+* Displays a custom logo, linked to home.
+*
+* @since 4.5.0
+*
+* @param int $blog_id Optional. ID of the blog in question. Default is the ID of the current blog.
+*/
+function the_custom_logo( $blog_id = 0 ) {
+	echo get_custom_logo( $blog_id );
+}
+/**
+* Returns document title for the current page.
+*
+* @since 4.4.0
+*
+* @global int $page  Page number of a single post.
+* @global int $paged Page number of a list of posts.
+*
+* @return string Tag with the document title.
+*/
+function wp_get_document_title() {
+	/**
+	 * Filters the document title before it is generated.
+	 *
+	 * Passing a non-empty value will short-circuit wp_get_document_title(),
+	 * returning that value instead.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $title The document title. Default empty string.
+	 */
+	$title = apply_filters( 'pre_get_document_title', '' );
+	if ( ! empty( $title ) ) {
+		return $title;
+	}
+	global $page, $paged;
+	$title = array(
+		'title' => '',
+	);
+	// If it's a 404 page, use a "Page not found" title.
+	if ( is_404() ) {
+		$title['title'] = __( 'Page not found' );
+	// If it's a search, use a dynamic search results title.
+	} elseif ( is_search() ) {
+		/* translators: %s: search phrase */
+		$title['title'] = sprintf( __( 'Search Results for &#8220;%s&#8221;' ), get_search_query() );
+	// If on the front page, use the site title.
+	} elseif ( is_front_page() ) {
+		$title['title'] = get_bloginfo( 'name', 'display' );
+	// If on a post type archive, use the post type archive title.
+	} elseif ( is_post_type_archive() ) {
+		$title['title'] = post_type_archive_title( '', false );
+	// If on a taxonomy archive, use the term title.
+	} elseif ( is_tax() ) {
+		$title['title'] = single_term_title( '', false );
+	/*
+	 * If we're on the blog page that is not the homepage or
+	 * a single post of any post type, use the post title.
+	 */
+	} elseif ( is_home() || is_singular() ) {
+		$title['title'] = single_post_title( '', false );
+	// If on a category or tag archive, use the term title.
+	} elseif ( is_category() || is_tag() ) {
+		$title['title'] = single_term_title( '', false );
+	// If on an author archive, use the author's display name.
+	} elseif ( is_author() && $author = get_queried_object() ) {
+		$title['title'] = $author->display_name;
+	// If it's a date archive, use the date as the title.
+	} elseif ( is_year() ) {
+		$title['title'] = get_the_date( _x( 'Y', 'yearly archives date format' ) );
+	} elseif ( is_month() ) {
+		$title['title'] = get_the_date( _x( 'F Y', 'monthly archives date format' ) );
+	} elseif ( is_day() ) {
+		$title['title'] = get_the_date();
+	}
+	// Add a page number if necessary.
+	if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
+		$title['page'] = sprintf( __( 'Page %s' ), max( $paged, $page ) );
+	}
+	// Append the description or site title to give context.
+	if ( is_front_page() ) {
+		$title['tagline'] = get_bloginfo( 'description', 'display' );
+	} else {
+		$title['site'] = get_bloginfo( 'name', 'display' );
+	}
+	/**
+	 * Filters the separator for the document title.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $sep Document title separator. Default '-'.
+	 */
+	$sep = apply_filters( 'document_title_separator', '-' );
+	/**
+	 * Filters the parts of the document title.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array $title {
+	 *     The document title parts.
+	 *
+	 *     @type string $title   Title of the viewed page.
+	 *     @type string $page    Optional. Page number if paginated.
+	 *     @type string $tagline Optional. Site description when on home page.
+	 *     @type string $site    Optional. Site title when not on home page.
+	 * }
+	 */
+	$title = apply_filters( 'document_title_parts', $title );
+	$title = implode( " $sep ", array_filter( $title ) );
+	$title = wptexturize( $title );
+	$title = convert_chars( $title );
+	$title = esc_html( $title );
+	$title = capital_P_dangit( $title );
+	return $title;
+}
+/**
+* Displays title tag with content.
 *
 * @ignore
 * @since 4.1.0
+* @since 4.4.0 Improved title output replaced `wp_title()`.
 * @access private
-*
-* @see wp_title()
 */
 function _wp_render_title_tag() {
 	if ( ! current_theme_supports( 'title-tag' ) ) {
 		return;
 	}
-	// This can only work internally on wp_head.
+	echo '<title>' . wp_get_document_title() . '</title>' . "\n";
-	if ( ! did_action( 'wp_head' ) && ! doing_action( 'wp_head' ) ) {
-		return;
-	}
-	echo '<title>' . wp_title( '|', false, 'right' ) . "</title>\n";
 }
 /**
 * Display or retrieve page title for all areas of blog.
 *
 * so that the blog title will be before the page title. This is not good for
 * title display, since the blog title shows up on most tabs and not what is
 * important, which is the page that the user is looking at.
 *
 * There are also SEO benefits to having the blog title after or to the 'right'
-* or the page title. However, it is mostly common sense to have the blog title
+* of the page title. However, it is mostly common sense to have the blog title
 * to the right with most browsers supporting tabs. You can achieve this by
 * using the seplocation parameter and setting the value to 'right'. This change
-* was introduced around 2.5.0, in case backwards compatibility of themes is
+* was introduced around 2.5.0, in case backward compatibility of themes is
 * important.
 *
 * @since 1.0.0
 *
-* @param string $sep Optional, default is '&raquo;'. How to separate the various items within the page title.
+* @global WP_Locale $wp_locale
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+*
+* @param string $sep         Optional, default is '&raquo;'. How to separate the various items
+*                            within the page title.
+* @param bool   $display     Optional, default is true. Whether to display or retrieve title.
 * @param string $seplocation Optional. Direction to display title, 'right'.
 * @return string|null String on retrieve, null when displaying.
 */
-function wp_title($sep = '&raquo;', $display = true, $seplocation = '') {
+function wp_title( $sep = '&raquo;', $display = true, $seplocation = '' ) {
-	global $wp_locale, $page, $paged;
+	global $wp_locale;
-	$m = get_query_var('m');
+	$m        = get_query_var( 'm' );
-	$year = get_query_var('year');
+	$year     = get_query_var( 'year' );
-	$monthnum = get_query_var('monthnum');
+	$monthnum = get_query_var( 'monthnum' );
-	$day = get_query_var('day');
+	$day      = get_query_var( 'day' );
-	$search = get_query_var('s');
+	$search   = get_query_var( 's' );
-	$title = '';
+	$title    = '';
-	$t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary
+	$t_sep = '%WP_TITLE_SEP%'; // Temporary separator, for accurate flipping, if necessary
 	// If there is a post
-	if ( is_single() || ( is_home() && !is_front_page() ) || ( is_page() && !is_front_page() ) ) {
+	if ( is_single() || ( is_home() && ! is_front_page() ) || ( is_page() && ! is_front_page() ) ) {
 		$title = single_post_title( '', false );
 	}
 	// If there's a post type archive
 	if ( is_post_type_archive() ) {
 		$post_type = get_query_var( 'post_type' );
-		if ( is_array( $post_type ) )
+		if ( is_array( $post_type ) ) {
 			$post_type = reset( $post_type );
+		}
 		$post_type_object = get_post_type_object( $post_type );
-		if ( ! $post_type_object->has_archive )
+		if ( ! $post_type_object->has_archive ) {
 			$title = post_type_archive_title( '', false );
+		}
 	}
 	// If there's a category or tag
 	if ( is_category() || is_tag() ) {
 		$title = single_term_title( '', false );
 	// If there's a taxonomy
 	if ( is_tax() ) {
 		$term = get_queried_object();
 		if ( $term ) {
-			$tax = get_taxonomy( $term->taxonomy );
+			$tax   = get_taxonomy( $term->taxonomy );
 			$title = single_term_title( $tax->labels->name . $t_sep, false );
 		}
 	}
 	// If there's an author
 	if ( is_author() && ! is_post_type_archive() ) {
 		$author = get_queried_object();
-		if ( $author )
+		if ( $author ) {
 			$title = $author->display_name;
+		}
 	}
 	// Post type archives with has_archive should override terms.
-	if ( is_post_type_archive() && $post_type_object->has_archive )
+	if ( is_post_type_archive() && $post_type_object->has_archive ) {
 		$title = post_type_archive_title( '', false );
+	}
 	// If there's a month
-	if ( is_archive() && !empty($m) ) {
+	if ( is_archive() && ! empty( $m ) ) {
-		$my_year = substr($m, 0, 4);
+		$my_year  = substr( $m, 0, 4 );
-		$my_month = $wp_locale->get_month(substr($m, 4, 2));
+		$my_month = $wp_locale->get_month( substr( $m, 4, 2 ) );
-		$my_day = intval(substr($m, 6, 2));
+		$my_day   = intval( substr( $m, 6, 2 ) );
-		$title = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );
+		$title    = $my_year . ( $my_month ? $t_sep . $my_month : '' ) . ( $my_day ? $t_sep . $my_day : '' );
 	}
 	// If there's a year
-	if ( is_archive() && !empty($year) ) {
+	if ( is_archive() && ! empty( $year ) ) {
 		$title = $year;
-		if ( !empty($monthnum) )
+		if ( ! empty( $monthnum ) ) {
-			$title .= $t_sep . $wp_locale->get_month($monthnum);
+			$title .= $t_sep . $wp_locale->get_month( $monthnum );
-		if ( !empty($day) )
+		}
-			$title .= $t_sep . zeroise($day, 2);
+		if ( ! empty( $day ) ) {
+			$title .= $t_sep . zeroise( $day, 2 );
+		}
 	}
 	// If it's a search
 	if ( is_search() ) {
 		/* translators: 1: separator, 2: search phrase */
-		$title = sprintf(__('Search Results %1$s %2$s'), $t_sep, strip_tags($search));
+		$title = sprintf( __( 'Search Results %1$s %2$s' ), $t_sep, strip_tags( $search ) );
 	}
 	// If it's a 404 page
 	if ( is_404() ) {
-		$title = __('Page not found');
+		$title = __( 'Page not found' );
 	}
 	$prefix = '';
-	if ( !empty($title) )
+	if ( ! empty( $title ) ) {
 		$prefix = " $sep ";
+	}
-	/**
-	 * Filter the parts of the page title.
+	/**
+	 * Filters the parts of the page title.
 	 *
 	 * @since 4.0.0
 	 *
 	 * @param array $title_array Parts of the page title.
 	 */
 	$title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) );
 	// Determines position of the separator and direction of the breadcrumb
 	if ( 'right' == $seplocation ) { // sep on right, so reverse the order
 		$title_array = array_reverse( $title_array );
-		$title = implode( " $sep ", $title_array ) . $prefix;
+		$title       = implode( " $sep ", $title_array ) . $prefix;
 	} else {
 		$title = $prefix . implode( " $sep ", $title_array );
 	}
-	if ( current_theme_supports( 'title-tag' ) && ! is_feed() ) {
+	/**
-		$title .= get_bloginfo( 'name', 'display' );
+	 * Filters the text of the page title.
-		$site_description = get_bloginfo( 'description', 'display' );
-		if ( $site_description && ( is_home() || is_front_page() ) ) {
-			$title .= " $sep $site_description";
-		}
-		if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
-			$title .= " $sep " . sprintf( __( 'Page %s' ), max( $paged, $page ) );
-		}
-	}
-	/**
-	 * Filter the text of the page title.
 	 *
 	 * @since 2.0.0
 	 *
-	 * @param string $title       Page title.
+	 * @param string $title Page title.
-	 * @param string $sep         Title separator.
+	 * @param string $sep Title separator.
 	 * @param string $seplocation Location of the separator (left or right).
 	 */
 	$title = apply_filters( 'wp_title', $title, $sep, $seplocation );
 	// Send it out
-	if ( $display )
+	if ( $display ) {
 		echo $title;
-	else
+	} else {
 		return $title;
+	}
 }
 /**
 * Display or retrieve page title for post.
 *
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 0.71
 *
-* @param string $prefix Optional. What to display before the title.
+* @param string $prefix  Optional. What to display before the title.
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
-* @return string|null Title when retrieving, null when displaying or failure.
+* @return string|void Title when retrieving.
 */
-function single_post_title($prefix = '', $display = true) {
+function single_post_title( $prefix = '', $display = true ) {
 	$_post = get_queried_object();
 	if ( !isset($_post->post_title) )
 		return;
 	/**
-	 * Filter the page title for a single post.
+	 * Filters the page title for a single post.
 	 *
 	 * @since 0.71
 	 *
 	 * @param string $_post_title The single post page title.
 	 * @param object $_post       The current queried object as returned by get_queried_object().
 * This is optimized for archive.php and archive-{$post_type}.php template files
 * for displaying the title of the post type.
 *
 * @since 3.1.0
 *
-* @param string $prefix Optional. What to display before the title.
+* @param string $prefix  Optional. What to display before the title.
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
-* @return string|null Title when retrieving, null when displaying or failure.
+* @return string|void Title when retrieving, null when displaying or failure.
 */
 function post_type_archive_title( $prefix = '', $display = true ) {
 	if ( ! is_post_type_archive() )
 		return;
 		$post_type = reset( $post_type );
 	$post_type_obj = get_post_type_object( $post_type );
 	/**
-	 * Filter the post type archive title.
+	 * Filters the post type archive title.
 	 *
 	 * @since 3.1.0
 	 *
 	 * @param string $post_type_name Post type 'name' label.
 	 * @param string $post_type      Post type.
 }
 /**
 * Display or retrieve page title for category archive.
 *
-* This is useful for category template file or files, because it is optimized
+* Useful for category template files for displaying the category page title.
-* for category page title and with less overhead than {@link wp_title()}.
+* The prefix does not automatically place a space between the prefix, so if
-*
+* there should be a space, the parameter value will need to have it at the end.
-* It does not support placing the separator after the title, but by leaving the
+*
-* prefix parameter empty, you can set the title separator manually. The prefix
+* @since 0.71
+*
+* @param string $prefix  Optional. What to display before the title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
+* @return string|void Title when retrieving.
+*/
+function single_cat_title( $prefix = '', $display = true ) {
+	return single_term_title( $prefix, $display );
+}
+/**
+* Display or retrieve page title for tag post archive.
+*
+* Useful for tag template files for displaying the tag page title. The prefix
 * does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
-* @since 0.71
-*
-* @param string $prefix Optional. What to display before the title.
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
-* @return string|null Title when retrieving, null when displaying or failure.
-*/
-function single_cat_title( $prefix = '', $display = true ) {
-	return single_term_title( $prefix, $display );
-}
-/**
-* Display or retrieve page title for tag post archive.
-*
-* Useful for tag template files for displaying the tag page title. It has less
-* overhead than {@link wp_title()}, because of its limited implementation.
-*
-* It does not support placing the separator after the title, but by leaving the
-* prefix parameter empty, you can set the title separator manually. The prefix
-* does not automatically place a space between the prefix, so if there should
-* be a space, the parameter value will need to have it at the end.
-*
 * @since 2.3.0
 *
-* @param string $prefix Optional. What to display before the title.
+* @param string $prefix  Optional. What to display before the title.
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
-* @return string|null Title when retrieving, null when displaying or failure.
+* @return string|void Title when retrieving.
 */
 function single_tag_title( $prefix = '', $display = true ) {
 	return single_term_title( $prefix, $display );
 }
 /**
 * Display or retrieve page title for taxonomy term archive.
 *
 * Useful for taxonomy term template files for displaying the taxonomy term page title.
-* It has less overhead than {@link wp_title()}, because of its limited implementation.
+* The prefix does not automatically place a space between the prefix, so if there should
-*
-* It does not support placing the separator after the title, but by leaving the
-* prefix parameter empty, you can set the title separator manually. The prefix
-* does not automatically place a space between the prefix, so if there should
 * be a space, the parameter value will need to have it at the end.
 *
 * @since 3.1.0
 *
-* @param string $prefix Optional. What to display before the title.
+* @param string $prefix  Optional. What to display before the title.
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
-* @return string|null Title when retrieving, null when displaying or failure.
+* @return string|void Title when retrieving.
 */
 function single_term_title( $prefix = '', $display = true ) {
 	$term = get_queried_object();
 	if ( !$term )
 		return;
 	if ( is_category() ) {
 		/**
-		 * Filter the category archive page title.
+		 * Filters the category archive page title.
 		 *
 		 * @since 2.0.10
 		 *
 		 * @param string $term_name Category name for archive being displayed.
 		 */
 		$term_name = apply_filters( 'single_cat_title', $term->name );
 	} elseif ( is_tag() ) {
 		/**
-		 * Filter the tag archive page title.
+		 * Filters the tag archive page title.
 		 *
 		 * @since 2.3.0
 		 *
 		 * @param string $term_name Tag name for archive being displayed.
 		 */
 		$term_name = apply_filters( 'single_tag_title', $term->name );
 	} elseif ( is_tax() ) {
 		/**
-		 * Filter the custom taxonomy archive page title.
+		 * Filters the custom taxonomy archive page title.
 		 *
 		 * @since 3.1.0
 		 *
 		 * @param string $term_name Term name for archive being displayed.
 		 */
 }
 /**
 * Display or retrieve page title for post archive based on date.
 *
-* Useful for when the template only needs to display the month and year, if
+* Useful for when the template only needs to display the month and year,
-* either are available. Optimized for just this purpose, so if it is all that
+* if either are available. The prefix does not automatically place a space
-* is needed, should be better than {@link wp_title()}.
+* between the prefix, so if there should be a space, the parameter value
-*
+* will need to have it at the end.
-* It does not support placing the separator after the title, but by leaving the
-* prefix parameter empty, you can set the title separator manually. The prefix
-* does not automatically place a space between the prefix, so if there should
-* be a space, the parameter value will need to have it at the end.
 *
 * @since 0.71
 *
-* @param string $prefix Optional. What to display before the title.
+* @global WP_Locale $wp_locale
-* @param bool $display Optional, default is true. Whether to display or retrieve title.
+*
-* @return string|null Title when retrieving, null when displaying or failure.
+* @param string $prefix  Optional. What to display before the title.
+* @param bool   $display Optional, default is true. Whether to display or retrieve title.
+* @return string|void Title when retrieving.
 */
 function single_month_title($prefix = '', $display = true ) {
 	global $wp_locale;
 	$m = get_query_var('m');
 *
 * @return string Archive title.
 */
 function get_the_archive_title() {
 	if ( is_category() ) {
+		/* translators: Category archive title. 1: Category name */
 		$title = sprintf( __( 'Category: %s' ), single_cat_title( '', false ) );
 	} elseif ( is_tag() ) {
+		/* translators: Tag archive title. 1: Tag name */
 		$title = sprintf( __( 'Tag: %s' ), single_tag_title( '', false ) );
 	} elseif ( is_author() ) {
+		/* translators: Author archive title. 1: Author name */
 		$title = sprintf( __( 'Author: %s' ), '<span class="vcard">' . get_the_author() . '</span>' );
 	} elseif ( is_year() ) {
+		/* translators: Yearly archive title. 1: Year */
 		$title = sprintf( __( 'Year: %s' ), get_the_date( _x( 'Y', 'yearly archives date format' ) ) );
 	} elseif ( is_month() ) {
+		/* translators: Monthly archive title. 1: Month name and year */
 		$title = sprintf( __( 'Month: %s' ), get_the_date( _x( 'F Y', 'monthly archives date format' ) ) );
 	} elseif ( is_day() ) {
+		/* translators: Daily archive title. 1: Date */
 		$title = sprintf( __( 'Day: %s' ), get_the_date( _x( 'F j, Y', 'daily archives date format' ) ) );
 	} elseif ( is_tax( 'post_format' ) ) {
 		if ( is_tax( 'post_format', 'post-format-aside' ) ) {
 			$title = _x( 'Asides', 'post format archive title' );
 		} elseif ( is_tax( 'post_format', 'post-format-gallery' ) ) {
 			$title = _x( 'Audio', 'post format archive title' );
 		} elseif ( is_tax( 'post_format', 'post-format-chat' ) ) {
 			$title = _x( 'Chats', 'post format archive title' );
 		}
 	} elseif ( is_post_type_archive() ) {
+		/* translators: Post type archive title. 1: Post type name */
 		$title = sprintf( __( 'Archives: %s' ), post_type_archive_title( '', false ) );
 	} elseif ( is_tax() ) {
 		$tax = get_taxonomy( get_queried_object()->taxonomy );
-		/* translators: 1: Taxonomy singular name, 2: Current taxonomy term */
+		/* translators: Taxonomy term archive title. 1: Taxonomy singular name, 2: Current taxonomy term */
 		$title = sprintf( __( '%1$s: %2$s' ), $tax->labels->singular_name, single_term_title( '', false ) );
 	} else {
 		$title = __( 'Archives' );
 	}
 	/**
-	 * Filter the archive title.
+	 * Filters the archive title.
 	 *
 	 * @since 4.1.0
 	 *
 	 * @param string $title Archive title to be displayed.
 	 */
 	return apply_filters( 'get_the_archive_title', $title );
 }
 /**
-* Display category, tag, or term description.
+* Display category, tag, term, or author description.
 *
 * @since 4.1.0
 *
 * @see get_the_archive_description()
 *
 		echo $before . $description . $after;
 	}
 }
 /**
-* Retrieve category, tag, or term description.
+* Retrieves the description for an author, post type, or term archive.
 *
 * @since 4.1.0
+* @since 4.7.0 Added support for author archives.
+* @since 4.9.0 Added support for post type archives.
+*
+* @see term_description()
 *
 * @return string Archive description.
 */
 function get_the_archive_description() {
-	/**
+	if ( is_author() ) {
-	 * Filter the archive description.
+		$description = get_the_author_meta( 'description' );
+	} elseif ( is_post_type_archive() ) {
+		$description = get_the_post_type_description();
+	} else {
+		$description = term_description();
+	}
+	/**
+	 * Filters the archive description.
 	 *
 	 * @since 4.1.0
 	 *
-	 * @see term_description()
-	 *
 	 * @param string $description Archive description to be displayed.
 	 */
-	return apply_filters( 'get_the_archive_description', term_description() );
+	return apply_filters( 'get_the_archive_description', $description );
+}
+/**
+* Retrieves the description for a post type archive.
+*
+* @since 4.9.0
+*
+* @return string The post type description.
+*/
+function get_the_post_type_description() {
+	$post_type = get_query_var( 'post_type' );
+	if ( is_array( $post_type ) ) {
+		$post_type = reset( $post_type );
+	}
+	$post_type_obj = get_post_type_object( $post_type );
+	// Check if a description is set.
+	if ( isset( $post_type_obj->description ) ) {
+		$description = $post_type_obj->description;
+	} else {
+		$description = '';
+	}
+	/**
+	 * Filters the description for a post type archive.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param string       $description   The post type description.
+	 * @param WP_Post_Type $post_type_obj The post type object.
+	 */
+	return apply_filters( 'get_the_post_type_description', $description, $post_type_obj );
 }
 /**
 * Retrieve archive link content based on predefined or custom code.
 *
 * element) and the after parameter after the closing link tag. If the above
 * three values for the format are not used, then custom format is assumed.
 *
 * @since 1.0.0
 *
-* @todo Properly document optional arguments as such
+* @param string $url    URL to archive.
-*
+* @param string $text   Archive text description.
-* @param string $url URL to archive.
-* @param string $text Archive text description.
 * @param string $format Optional, default is 'html'. Can be 'link', 'option', 'html', or custom.
-* @param string $before Optional.
+* @param string $before Optional. Content to prepend to the description. Default empty.
-* @param string $after Optional.
+* @param string $after  Optional. Content to append to the description. Default empty.
 * @return string HTML link content for archive.
 */
 function get_archives_link($url, $text, $format = 'html', $before = '', $after = '') {
 	$text = wptexturize($text);
 	$url = esc_url($url);
 		$link_html = "\t<li>$before<a href='$url'>$text</a>$after</li>\n";
 	else // custom
 		$link_html = "\t$before<a href='$url'>$text</a>$after\n";
 	/**
-	 * Filter the archive link content.
+	 * Filters the archive link content.
 	 *
 	 * @since 2.6.0
+	 * @since 4.5.0 Added the `$url`, `$text`, `$format`, `$before`, and `$after` parameters.
 	 *
 	 * @param string $link_html The archive HTML link content.
-	 */
+	 * @param string $url       URL to archive.
-	$link_html = apply_filters( 'get_archives_link', $link_html );
+	 * @param string $text      Archive text description.
+	 * @param string $format    Link format. Can be 'link', 'option', 'html', or custom.
-	return $link_html;
+	 * @param string $before    Content to prepend to the description.
+	 * @param string $after     Content to append to the description.
+	 */
+	return apply_filters( 'get_archives_link', $link_html, $url, $text, $format, $before, $after );
 }
 /**
 * Display archive links based on type and format.
 *
 * @since 1.2.0
+* @since 4.4.0 $post_type arg was added.
 *
 * @see get_archives_link()
+*
+* @global wpdb      $wpdb
+* @global WP_Locale $wp_locale
 *
 * @param string|array $args {
 *     Default archive links arguments. Optional.
 *
 *     @type string     $type            Type of archive to retrieve. Accepts 'daily', 'weekly', 'monthly',
 *     @type string     $after           Markup to append to the end of each link. Default empty.
 *     @type bool       $show_post_count Whether to display the post count alongside the link. Default false.
 *     @type bool|int   $echo            Whether to echo or return the links list. Default 1|true to echo.
 *     @type string     $order           Whether to use ascending or descending order. Accepts 'ASC', or 'DESC'.
 *                                       Default 'DESC'.
+*     @type string     $post_type       Post type. Default 'post'.
 * }
-* @return string|null String when retrieving, null when displaying.
+* @return string|void String when retrieving.
 */
 function wp_get_archives( $args = '' ) {
 	global $wpdb, $wp_locale;
 	$defaults = array(
 		'type' => 'monthly', 'limit' => '',
 		'format' => 'html', 'before' => '',
 		'after' => '', 'show_post_count' => false,
 		'echo' => 1, 'order' => 'DESC',
+		'post_type' => 'post'
 	);
 	$r = wp_parse_args( $args, $defaults );
+	$post_type_object = get_post_type_object( $r['post_type'] );
+	if ( ! is_post_type_viewable( $post_type_object ) ) {
+		return;
+	}
+	$r['post_type'] = $post_type_object->name;
 	if ( '' == $r['type'] ) {
 		$r['type'] = 'monthly';
 	}
 	}
 	// this is what will separate dates on weekly archive links
 	$archive_week_separator = '&#8211;';
-	// over-ride general date format ? 0 = no: use the date format set in Options, 1 = yes: over-ride
+	$sql_where = $wpdb->prepare( "WHERE post_type = %s AND post_status = 'publish'", $r['post_type'] );
-	$archive_date_format_over_ride = 0;
+	/**
-	// options for daily archive (only if you over-ride the general date format)
+	 * Filters the SQL WHERE clause for retrieving archives.
-	$archive_day_date_format = 'Y/m/d';
-	// options for weekly archive (only if you over-ride the general date format)
-	$archive_week_start_date_format = 'Y/m/d';
-	$archive_week_end_date_format	= 'Y/m/d';
-	if ( ! $archive_date_format_over_ride ) {
-		$archive_day_date_format = get_option( 'date_format' );
-		$archive_week_start_date_format = get_option( 'date_format' );
-		$archive_week_end_date_format = get_option( 'date_format' );
-	}
-	/**
-	 * Filter the SQL WHERE clause for retrieving archives.
 	 *
 	 * @since 2.2.0
 	 *
 	 * @param string $sql_where Portion of SQL query containing the WHERE clause.
 	 * @param array  $r         An array of default arguments.
 	 */
-	$where = apply_filters( 'getarchives_where', "WHERE post_type = 'post' AND post_status = 'publish'", $r );
+	$where = apply_filters( 'getarchives_where', $sql_where, $r );
 	/**
-	 * Filter the SQL JOIN clause for retrieving archives.
+	 * Filters the SQL JOIN clause for retrieving archives.
 	 *
 	 * @since 2.2.0
 	 *
 	 * @param string $sql_join Portion of SQL query containing JOIN clause.
 	 * @param array  $r        An array of default arguments.
 	 */
 	$join = apply_filters( 'getarchives_join', '', $r );
 	$output = '';
-	$last_changed = wp_cache_get( 'last_changed', 'posts' );
+	$last_changed = wp_cache_get_last_changed( 'posts' );
-	if ( ! $last_changed ) {
-		$last_changed = microtime();
-		wp_cache_set( 'last_changed', $last_changed, 'posts' );
-	}
 	$limit = $r['limit'];
 	if ( 'monthly' == $r['type'] ) {
 		$query = "SELECT YEAR(post_date) AS `year`, MONTH(post_date) AS `month`, count(ID) as posts FROM $wpdb->posts $join $where GROUP BY YEAR(post_date), MONTH(post_date) ORDER BY post_date $order $limit";
 		}
 		if ( $results ) {
 			$after = $r['after'];
 			foreach ( (array) $results as $result ) {
 				$url = get_month_link( $result->year, $result->month );
+				if ( 'post' !== $r['post_type'] ) {
+					$url = add_query_arg( 'post_type', $r['post_type'], $url );
+				}
 				/* translators: 1: month name, 2: 4-digit year */
 				$text = sprintf( __( '%1$s %2$d' ), $wp_locale->get_month( $result->month ), $result->year );
 				if ( $r['show_post_count'] ) {
 					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
 				}
 		}
 		if ( $results ) {
 			$after = $r['after'];
 			foreach ( (array) $results as $result) {
 				$url = get_year_link( $result->year );
+				if ( 'post' !== $r['post_type'] ) {
+					$url = add_query_arg( 'post_type', $r['post_type'], $url );
+				}
 				$text = sprintf( '%d', $result->year );
 				if ( $r['show_post_count'] ) {
 					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
 				}
 				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
 		}
 		if ( $results ) {
 			$after = $r['after'];
 			foreach ( (array) $results as $result ) {
 				$url  = get_day_link( $result->year, $result->month, $result->dayofmonth );
+				if ( 'post' !== $r['post_type'] ) {
+					$url = add_query_arg( 'post_type', $r['post_type'], $url );
+				}
 				$date = sprintf( '%1$d-%2$02d-%3$02d 00:00:00', $result->year, $result->month, $result->dayofmonth );
-				$text = mysql2date( $archive_day_date_format, $date );
+				$text = mysql2date( get_option( 'date_format' ), $date );
 				if ( $r['show_post_count'] ) {
 					$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
 				}
 				$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
 			}
 			foreach ( (array) $results as $result ) {
 				if ( $result->week != $arc_w_last ) {
 					$arc_year       = $result->yr;
 					$arc_w_last     = $result->week;
 					$arc_week       = get_weekstartend( $result->yyyymmdd, get_option( 'start_of_week' ) );
-					$arc_week_start = date_i18n( $archive_week_start_date_format, $arc_week['start'] );
+					$arc_week_start = date_i18n( get_option( 'date_format' ), $arc_week['start'] );
-					$arc_week_end   = date_i18n( $archive_week_end_date_format, $arc_week['end'] );
+					$arc_week_end   = date_i18n( get_option( 'date_format' ), $arc_week['end'] );
-					$url            = sprintf( '%1$s/%2$s%3$sm%4$s%5$s%6$sw%7$s%8$d', home_url(), '', '?', '=', $arc_year, '&amp;', '=', $result->week );
+					$url            = add_query_arg( array( 'm' => $arc_year, 'w' => $result->week, ), home_url( '/' ) );
+					if ( 'post' !== $r['post_type'] ) {
+						$url = add_query_arg( 'post_type', $r['post_type'], $url );
+					}
 					$text           = $arc_week_start . $archive_week_separator . $arc_week_end;
 					if ( $r['show_post_count'] ) {
 						$r['after'] = '&nbsp;(' . $result->posts . ')' . $after;
 					}
 					$output .= get_archives_link( $url, $text, $r['format'], $r['before'], $r['after'] );
 * Get number of days since the start of the week.
 *
 * @since 1.5.0
 *
 * @param int $num Number of day.
-* @return int Days since the start of the week.
+* @return float Days since the start of the week.
 */
 function calendar_week_mod($num) {
 	$base = 7;
 	return ($num - $base*floor($num/$base));
 }
 * The calendar is cached, which will be retrieved, if it exists. If there are
 * no posts for the month, then it will not be displayed.
 *
 * @since 1.0.0
 *
+* @global wpdb      $wpdb
+* @global int       $m
+* @global int       $monthnum
+* @global int       $year
+* @global WP_Locale $wp_locale
+* @global array     $posts
+*
 * @param bool $initial Optional, default is true. Use initial calendar names.
-* @param bool $echo Optional, default is true. Set to false for return.
+* @param bool $echo    Optional, default is true. Set to false for return.
-* @return string|null String when retrieving, null when displaying.
+* @return string|void String when retrieving.
 */
-function get_calendar($initial = true, $echo = true) {
+function get_calendar( $initial = true, $echo = true ) {
 	global $wpdb, $m, $monthnum, $year, $wp_locale, $posts;
 	$key = md5( $m . $monthnum . $year );
-	if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) {
+	$cache = wp_cache_get( 'get_calendar', 'calendar' );
-		if ( is_array($cache) && isset( $cache[ $key ] ) ) {
-			if ( $echo ) {
+	if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) {
-				/** This filter is documented in wp-includes/general-template.php */
+		/** This filter is documented in wp-includes/general-template.php */
-				echo apply_filters( 'get_calendar', $cache[$key] );
+		$output = apply_filters( 'get_calendar', $cache[ $key ] );
-				return;
-			} else {
+		if ( $echo ) {
-				/** This filter is documented in wp-includes/general-template.php */
+			echo $output;
-				return apply_filters( 'get_calendar', $cache[$key] );
+			return;
-			}
+		}
-		}
-	}
+		return $output;
+	}
-	if ( !is_array($cache) )
+	if ( ! is_array( $cache ) ) {
 		$cache = array();
+	}
 	// Quick check. If we have no posts at all, abort!
-	if ( !$posts ) {
+	if ( ! $posts ) {
 		$gotsome = $wpdb->get_var("SELECT 1 as test FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' LIMIT 1");
-		if ( !$gotsome ) {
+		if ( ! $gotsome ) {
 			$cache[ $key ] = '';
 			wp_cache_set( 'get_calendar', $cache, 'calendar' );
 			return;
 		}
 	}
-	if ( isset($_GET['w']) )
+	if ( isset( $_GET['w'] ) ) {
-		$w = ''.intval($_GET['w']);
+		$w = (int) $_GET['w'];
+	}
 	// week_begins = 0 stands for Sunday
-	$week_begins = intval(get_option('start_of_week'));
+	$week_begins = (int) get_option( 'start_of_week' );
+	$ts = current_time( 'timestamp' );
 	// Let's figure out when we are
-	if ( !empty($monthnum) && !empty($year) ) {
+	if ( ! empty( $monthnum ) && ! empty( $year ) ) {
-		$thismonth = ''.zeroise(intval($monthnum), 2);
+		$thismonth = zeroise( intval( $monthnum ), 2 );
-		$thisyear = ''.intval($year);
+		$thisyear = (int) $year;
-	} elseif ( !empty($w) ) {
+	} elseif ( ! empty( $w ) ) {
 		// We need to get the month from MySQL
-		$thisyear = ''.intval(substr($m, 0, 4));
+		$thisyear = (int) substr( $m, 0, 4 );
-		$d = (($w - 1) * 7) + 6; //it seems MySQL's weeks disagree with PHP's
+		//it seems MySQL's weeks disagree with PHP's
+		$d = ( ( $w - 1 ) * 7 ) + 6;
 		$thismonth = $wpdb->get_var("SELECT DATE_FORMAT((DATE_ADD('{$thisyear}0101', INTERVAL $d DAY) ), '%m')");
-	} elseif ( !empty($m) ) {
+	} elseif ( ! empty( $m ) ) {
-		$thisyear = ''.intval(substr($m, 0, 4));
+		$thisyear = (int) substr( $m, 0, 4 );
-		if ( strlen($m) < 6 )
+		if ( strlen( $m ) < 6 ) {
-				$thismonth = '01';
+			$thismonth = '01';
-		else
+		} else {
-				$thismonth = ''.zeroise(intval(substr($m, 4, 2)), 2);
+			$thismonth = zeroise( (int) substr( $m, 4, 2 ), 2 );
+		}
 	} else {
-		$thisyear = gmdate('Y', current_time('timestamp'));
+		$thisyear = gmdate( 'Y', $ts );
-		$thismonth = gmdate('m', current_time('timestamp'));
+		$thismonth = gmdate( 'm', $ts );
 	}
-	$unixmonth = mktime(0, 0 , 0, $thismonth, 1, $thisyear);
+	$unixmonth = mktime( 0, 0 , 0, $thismonth, 1, $thisyear );
-	$last_day = date('t', $unixmonth);
+	$last_day = date( 't', $unixmonth );
 	// Get the next and previous month and year with at least one post
 	$previous = $wpdb->get_row("SELECT MONTH(post_date) AS month, YEAR(post_date) AS year
 		FROM $wpdb->posts
 		WHERE post_date < '$thisyear-$thismonth-01'
 			LIMIT 1");
 	/* translators: Calendar caption: 1: month name, 2: 4-digit year */
 	$calendar_caption = _x('%1$s %2$s', 'calendar caption');
 	$calendar_output = '<table id="wp-calendar">
-	<caption>' . sprintf($calendar_caption, $wp_locale->get_month($thismonth), date('Y', $unixmonth)) . '</caption>
+	<caption>' . sprintf(
+		$calendar_caption,
+		$wp_locale->get_month( $thismonth ),
+		date( 'Y', $unixmonth )
+	) . '</caption>
 	<thead>
 	<tr>';
 	$myweek = array();
-	for ( $wdcount=0; $wdcount<=6; $wdcount++ ) {
+	for ( $wdcount = 0; $wdcount <= 6; $wdcount++ ) {
-		$myweek[] = $wp_locale->get_weekday(($wdcount+$week_begins)%7);
+		$myweek[] = $wp_locale->get_weekday( ( $wdcount + $week_begins ) % 7 );
 	}
 	foreach ( $myweek as $wd ) {
-		$day_name = (true == $initial) ? $wp_locale->get_weekday_initial($wd) : $wp_locale->get_weekday_abbrev($wd);
+		$day_name = $initial ? $wp_locale->get_weekday_initial( $wd ) : $wp_locale->get_weekday_abbrev( $wd );
-		$wd = esc_attr($wd);
+		$wd = esc_attr( $wd );
 		$calendar_output .= "\n\t\t<th scope=\"col\" title=\"$wd\">$day_name</th>";
 	}
 	$calendar_output .= '
 	</tr>
 	<tfoot>
 	<tr>';
 	if ( $previous ) {
-		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link($previous->year, $previous->month) . '">&laquo; ' . $wp_locale->get_month_abbrev($wp_locale->get_month($previous->month)) . '</a></td>';
+		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev"><a href="' . get_month_link( $previous->year, $previous->month ) . '">&laquo; ' .
+			$wp_locale->get_month_abbrev( $wp_locale->get_month( $previous->month ) ) .
+		'</a></td>';
 	} else {
 		$calendar_output .= "\n\t\t".'<td colspan="3" id="prev" class="pad">&nbsp;</td>';
 	}
 	$calendar_output .= "\n\t\t".'<td class="pad">&nbsp;</td>';
 	if ( $next ) {
-		$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link($next->year, $next->month) . '">' . $wp_locale->get_month_abbrev($wp_locale->get_month($next->month)) . ' &raquo;</a></td>';
+		$calendar_output .= "\n\t\t".'<td colspan="3" id="next"><a href="' . get_month_link( $next->year, $next->month ) . '">' .
+			$wp_locale->get_month_abbrev( $wp_locale->get_month( $next->month ) ) .
+		' &raquo;</a></td>';
 	} else {
 		$calendar_output .= "\n\t\t".'<td colspan="3" id="next" class="pad">&nbsp;</td>';
 	}
 	$calendar_output .= '
 		foreach ( (array) $dayswithposts as $daywith ) {
 			$daywithpost[] = $daywith[0];
 		}
 	}
-	if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'camino') !== false || stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false)
-		$ak_title_separator = "\n";
-	else
-		$ak_title_separator = ', ';
-	$ak_titles_for_day = array();
-	$ak_post_titles = $wpdb->get_results("SELECT ID, post_title, DAYOFMONTH(post_date) as dom "
-		."FROM $wpdb->posts "
-		."WHERE post_date >= '{$thisyear}-{$thismonth}-01 00:00:00' "
-		."AND post_date <= '{$thisyear}-{$thismonth}-{$last_day} 23:59:59' "
-		."AND post_type = 'post' AND post_status = 'publish'"
-	);
-	if ( $ak_post_titles ) {
-		foreach ( (array) $ak_post_titles as $ak_post_title ) {
-				/** This filter is documented in wp-includes/post-template.php */
-				$post_title = esc_attr( apply_filters( 'the_title', $ak_post_title->post_title, $ak_post_title->ID ) );
-				if ( empty($ak_titles_for_day['day_'.$ak_post_title->dom]) )
-					$ak_titles_for_day['day_'.$ak_post_title->dom] = '';
-				if ( empty($ak_titles_for_day["$ak_post_title->dom"]) ) // first one
-					$ak_titles_for_day["$ak_post_title->dom"] = $post_title;
-				else
-					$ak_titles_for_day["$ak_post_title->dom"] .= $ak_title_separator . $post_title;
-		}
-	}
 	// See how much we should pad in the beginning
-	$pad = calendar_week_mod(date('w', $unixmonth)-$week_begins);
+	$pad = calendar_week_mod( date( 'w', $unixmonth ) - $week_begins );
-	if ( 0 != $pad )
+	if ( 0 != $pad ) {
-		$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr($pad) .'" class="pad">&nbsp;</td>';
+		$calendar_output .= "\n\t\t".'<td colspan="'. esc_attr( $pad ) .'" class="pad">&nbsp;</td>';
+	}
-	$daysinmonth = intval(date('t', $unixmonth));
+	$newrow = false;
+	$daysinmonth = (int) date( 't', $unixmonth );
 	for ( $day = 1; $day <= $daysinmonth; ++$day ) {
-		if ( isset($newrow) && $newrow )
+		if ( isset($newrow) && $newrow ) {
 			$calendar_output .= "\n\t</tr>\n\t<tr>\n\t\t";
+		}
 		$newrow = false;
-		if ( $day == gmdate('j', current_time('timestamp')) && $thismonth == gmdate('m', current_time('timestamp')) && $thisyear == gmdate('Y', current_time('timestamp')) )
+		if ( $day == gmdate( 'j', $ts ) &&
+			$thismonth == gmdate( 'm', $ts ) &&
+			$thisyear == gmdate( 'Y', $ts ) ) {
 			$calendar_output .= '<td id="today">';
-		else
+		} else {
 			$calendar_output .= '<td>';
+		}
-		if ( in_array($day, $daywithpost) ) // any posts today?
-				$calendar_output .= '<a href="' . get_day_link( $thisyear, $thismonth, $day ) . '" title="' . esc_attr( $ak_titles_for_day[ $day ] ) . "\">$day</a>";
+		if ( in_array( $day, $daywithpost ) ) {
-		else
+			// any posts today?
+			$date_format = date( _x( 'F j, Y', 'daily archives date format' ), strtotime( "{$thisyear}-{$thismonth}-{$day}" ) );
+			/* translators: Post calendar label. 1: Date */
+			$label = sprintf( __( 'Posts published on %s' ), $date_format );
+			$calendar_output .= sprintf(
+				'<a href="%s" aria-label="%s">%s</a>',
+				get_day_link( $thisyear, $thismonth, $day ),
+				esc_attr( $label ),
+				$day
+			);
+		} else {
 			$calendar_output .= $day;
+		}
 		$calendar_output .= '</td>';
-		if ( 6 == calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins) )
+		if ( 6 == calendar_week_mod( date( 'w', mktime(0, 0 , 0, $thismonth, $day, $thisyear ) ) - $week_begins ) ) {
 			$newrow = true;
-	}
+		}
+	}
-	$pad = 7 - calendar_week_mod(date('w', mktime(0, 0 , 0, $thismonth, $day, $thisyear))-$week_begins);
-	if ( $pad != 0 && $pad != 7 )
+	$pad = 7 - calendar_week_mod( date( 'w', mktime( 0, 0 , 0, $thismonth, $day, $thisyear ) ) - $week_begins );
-		$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr($pad) .'">&nbsp;</td>';
+	if ( $pad != 0 && $pad != 7 ) {
+		$calendar_output .= "\n\t\t".'<td class="pad" colspan="'. esc_attr( $pad ) .'">&nbsp;</td>';
+	}
 	$calendar_output .= "\n\t</tr>\n\t</tbody>\n\t</table>";
 	$cache[ $key ] = $calendar_output;
 	wp_cache_set( 'get_calendar', $cache, 'calendar' );
 	if ( $echo ) {
 		/**
-		 * Filter the HTML calendar output.
+		 * Filters the HTML calendar output.
 		 *
 		 * @since 3.0.0
 		 *
 		 * @param string $calendar_output HTML output of the calendar.
 		 */
 		echo apply_filters( 'get_calendar', $calendar_output );
-	} else {
+		return;
-		/** This filter is documented in wp-includes/general-template.php */
+	}
-		return apply_filters( 'get_calendar', $calendar_output );
+	/** This filter is documented in wp-includes/general-template.php */
-	}
+	return apply_filters( 'get_calendar', $calendar_output );
 }
 /**
 * Purge the cached results of get_calendar.
 *
 *
 * This is useful for displaying in the comment area, which elements and
 * attributes are supported. As well as any plugins which want to display it.
 *
 * @since 1.0.1
-* @uses $allowedtags
+*
+* @global array $allowedtags
 *
 * @return string HTML allowed tags entity encoded.
 */
 function allowed_tags() {
 	global $allowedtags;
 				$allowed .= ' '.$attribute.'=""';
 			}
 		}
 		$allowed .= '> ';
 	}
-	return htmlentities($allowed);
+	return htmlentities( $allowed );
 }
 /***** Date/Time tags *****/
 /**
 * HTML output can be filtered with 'the_date'.
 * Date string output can be filtered with 'get_the_date'.
 *
 * @since 0.71
 *
-* @param string $d Optional. PHP date format defaults to the date_format option if not specified.
+* @global string|int|bool $currentday
+* @global string|int|bool $previousday
+*
+* @param string $d      Optional. PHP date format defaults to the date_format option if not specified.
 * @param string $before Optional. Output before the date.
-* @param string $after Optional. Output after the date.
+* @param string $after  Optional. Output after the date.
-* @param bool $echo Optional, default is display. Whether to echo the date or return it.
+* @param bool   $echo   Optional, default is display. Whether to echo the date or return it.
-* @return string|null Null if displaying, string if retrieving.
+* @return string|void String if retrieving.
 */
 function the_date( $d = '', $before = '', $after = '', $echo = true ) {
 	global $currentday, $previousday;
-	if ( $currentday != $previousday ) {
+	if ( is_new_day() ) {
 		$the_date = $before . get_the_date( $d ) . $after;
 		$previousday = $currentday;
 		/**
-		 * Filter the date a post was published for display.
+		 * Filters the date a post was published for display.
 		 *
 		 * @since 0.71
 		 *
 		 * @param string $the_date The formatted date string.
 		 * @param string $d        PHP date format. Defaults to 'date_format' option
 		if ( $echo )
 			echo $the_date;
 		else
 			return $the_date;
 	}
-	return null;
 }
 /**
 * Retrieve the date on which the post was written.
 *
 * Unlike the_date() this function will always return the date.
-* Modify output with 'get_the_date' filter.
+* Modify output with the {@see 'get_the_date'} filter.
 *
 * @since 3.0.0
 *
 * @param  string      $d    Optional. PHP date format defaults to the date_format option if not specified.
 * @param  int|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
 	} else {
 		$the_date = mysql2date( $d, $post->post_date );
 	}
 	/**
-	 * Filter the date a post was published.
+	 * Filters the date a post was published.
 	 *
 	 * @since 3.0.0
 	 *
 	 * @param string      $the_date The formatted date.
 	 * @param string      $d        PHP date format. Defaults to 'date_format' option
 /**
 * Display the date on which the post was last modified.
 *
 * @since 2.1.0
 *
-* @param string $d Optional. PHP date format defaults to the date_format option if not specified.
+* @param string $d      Optional. PHP date format defaults to the date_format option if not specified.
 * @param string $before Optional. Output before the date.
-* @param string $after Optional. Output after the date.
+* @param string $after  Optional. Output after the date.
-* @param bool $echo Optional, default is display. Whether to echo the date or return it.
+* @param bool   $echo   Optional, default is display. Whether to echo the date or return it.
-* @return string|null Null if displaying, string if retrieving.
+* @return string|void String if retrieving.
 */
-function the_modified_date($d = '', $before='', $after='', $echo = true) {
+function the_modified_date( $d = '', $before = '', $after = '', $echo = true ) {
 	$the_modified_date = $before . get_the_modified_date($d) . $after;
 	/**
-	 * Filter the date a post was last modified for display.
+	 * Filters the date a post was last modified for display.
 	 *
 	 * @since 2.1.0
 	 *
 	 * @param string $the_modified_date The last modified date.
 	 * @param string $d                 PHP date format. Defaults to 'date_format' option
 /**
 * Retrieve the date on which the post was last modified.
 *
 * @since 2.1.0
-*
+* @since 4.6.0 Added the `$post` parameter.
-* @param string $d Optional. PHP date format. Defaults to the "date_format" option
+*
-* @return string
+* @param string      $d    Optional. PHP date format defaults to the date_format option if not specified.
-*/
+* @param int|WP_Post $post Optional. Post ID or WP_Post object. Default current post.
-function get_the_modified_date($d = '') {
+* @return false|string Date the current post was modified. False on failure.
-	if ( '' == $d )
+*/
-		$the_time = get_post_modified_time(get_option('date_format'), null, null, true);
+function get_the_modified_date( $d = '', $post = null ) {
-	else
+	$post = get_post( $post );
-		$the_time = get_post_modified_time($d, null, null, true);
+	if ( ! $post ) {
-	/**
+		// For backward compatibility, failures go through the filter below.
-	 * Filter the date a post was last modified.
+		$the_time = false;
+	} elseif ( empty( $d ) ) {
+		$the_time = get_post_modified_time( get_option( 'date_format' ), false, $post, true );
+	} else {
+		$the_time = get_post_modified_time( $d, false, $post, true );
+	}
+	/**
+	 * Filters the date a post was last modified.
 	 *
 	 * @since 2.1.0
-	 *
+	 * @since 4.6.0 Added the `$post` parameter.
-	 * @param string $the_time The formatted date.
+	 *
-	 * @param string $d        PHP date format. Defaults to value specified in
+	 * @param string|bool  $the_time The formatted date or false if no post is found.
-	 *                         'date_format' option.
+	 * @param string       $d        PHP date format. Defaults to value specified in
-	 */
+	 *                               'date_format' option.
-	return apply_filters( 'get_the_modified_date', $the_time, $d );
+	 * @param WP_Post|null $post     WP_Post object or null if no post is found.
+	 */
+	return apply_filters( 'get_the_modified_date', $the_time, $d, $post );
 }
 /**
 * Display the time at which the post was written.
 *
 *
 * @param string $d Either 'G', 'U', or php date format.
 */
 function the_time( $d = '' ) {
 	/**
-	 * Filter the time a post was written for display.
+	 * Filters the time a post was written for display.
 	 *
 	 * @since 0.71
 	 *
 	 * @param string $get_the_time The formatted time.
 	 * @param string $d            The time format. Accepts 'G', 'U',
 *
 * @param string      $d    Optional. Format to use for retrieving the time the post
 *                          was written. Either 'G', 'U', or php date format defaults
 *                          to the value specified in the time_format option. Default empty.
 * @param int|WP_Post $post WP_Post object or ID. Default is global $post object.
-* @return false|string Formatted date string or Unix timestamp. False on failure.
+* @return string|int|false Formatted date string or Unix timestamp if `$id` is 'U' or 'G'. False on failure.
 */
 function get_the_time( $d = '', $post = null ) {
 	$post = get_post($post);
 	if ( ! $post ) {
 		$the_time = get_post_time(get_option('time_format'), false, $post, true);
 	else
 		$the_time = get_post_time($d, false, $post, true);
 	/**
-	 * Filter the time a post was written.
+	 * Filters the time a post was written.
 	 *
 	 * @since 1.5.0
 	 *
 	 * @param string      $the_time The formatted time.
 	 * @param string      $d        Format to use for retrieving the time the post was written.
 * @param string      $d         Optional. Format to use for retrieving the time the post
 *                               was written. Either 'G', 'U', or php date format. Default 'U'.
 * @param bool        $gmt       Optional. Whether to retrieve the GMT time. Default false.
 * @param int|WP_Post $post      WP_Post object or ID. Default is global $post object.
 * @param bool        $translate Whether to translate the time string. Default false.
-* @return false|string|int Formatted date string or Unix timestamp. False on failure.
+* @return string|int|false Formatted date string or Unix timestamp if `$id` is 'U' or 'G'. False on failure.
 */
 function get_post_time( $d = 'U', $gmt = false, $post = null, $translate = false ) {
 	$post = get_post($post);
 	if ( ! $post ) {
 		$time = $post->post_date;
 	$time = mysql2date($d, $time, $translate);
 	/**
-	 * Filter the localized time a post was written.
+	 * Filters the localized time a post was written.
 	 *
 	 * @since 2.6.0
 	 *
 	 * @param string $time The formatted time.
 	 * @param string $d    Format to use for retrieving the time the post was written.
 *
 * @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
 */
 function the_modified_time($d = '') {
 	/**
-	 * Filter the localized time a post was last modified, for display.
+	 * Filters the localized time a post was last modified, for display.
 	 *
 	 * @since 2.0.0
 	 *
 	 * @param string $get_the_modified_time The formatted time.
 	 * @param string $d                     The time format. Accepts 'G', 'U',
 /**
 * Retrieve the time at which the post was last modified.
 *
 * @since 2.0.0
-*
+* @since 4.6.0 Added the `$post` parameter.
-* @param string $d Optional Either 'G', 'U', or php date format defaults to the value specified in the time_format option.
+*
-* @return string
+* @param string      $d     Optional. Format to use for retrieving the time the post
-*/
+*                           was modified. Either 'G', 'U', or php date format defaults
-function get_the_modified_time($d = '') {
+*                           to the value specified in the time_format option. Default empty.
-	if ( '' == $d )
+* @param int|WP_Post $post  Optional. Post ID or WP_Post object. Default current post.
-		$the_time = get_post_modified_time(get_option('time_format'), null, null, true);
+* @return false|string Formatted date string or Unix timestamp. False on failure.
-	else
+*/
-		$the_time = get_post_modified_time($d, null, null, true);
+function get_the_modified_time( $d = '', $post = null ) {
+	$post = get_post( $post );
-	/**
-	 * Filter the localized time a post was last modified.
+	if ( ! $post ) {
+		// For backward compatibility, failures go through the filter below.
+		$the_time = false;
+	} elseif ( empty( $d ) ) {
+		$the_time = get_post_modified_time( get_option( 'time_format' ), false, $post, true );
+	} else {
+		$the_time = get_post_modified_time( $d, false, $post, true );
+	}
+	/**
+	 * Filters the localized time a post was last modified.
 	 *
 	 * @since 2.0.0
-	 *
+	 * @since 4.6.0 Added the `$post` parameter.
-	 * @param string $the_time The formatted time.
+	 *
-	 * @param string $d        Format to use for retrieving the time the post was
+	 * @param string|bool  $the_time The formatted time or false if no post is found.
-	 *                         written. Accepts 'G', 'U', or php date format. Defaults
+	 * @param string       $d        Format to use for retrieving the time the post was
-	 *                         to value specified in 'time_format' option.
+	 *                               written. Accepts 'G', 'U', or php date format. Defaults
-	 */
+	 *                               to value specified in 'time_format' option.
-	return apply_filters( 'get_the_modified_time', $the_time, $d );
+	 * @param WP_Post|null $post     WP_Post object or null if no post is found.
+	 */
+	return apply_filters( 'get_the_modified_time', $the_time, $d, $post );
 }
 /**
 * Retrieve the time at which the post was last modified.
 *
 * @param string      $d         Optional. Format to use for retrieving the time the post
 *                               was modified. Either 'G', 'U', or php date format. Default 'U'.
 * @param bool        $gmt       Optional. Whether to retrieve the GMT time. Default false.
 * @param int|WP_Post $post      WP_Post object or ID. Default is global $post object.
 * @param bool        $translate Whether to translate the time string. Default false.
-* @return false|string Formatted date string or Unix timestamp. False on failure.
+* @return string|int|false Formatted date string or Unix timestamp if `$id` is 'U' or 'G'. False on failure.
 */
 function get_post_modified_time( $d = 'U', $gmt = false, $post = null, $translate = false ) {
 	$post = get_post($post);
 	if ( ! $post ) {
 	else
 		$time = $post->post_modified;
 	$time = mysql2date($d, $time, $translate);
 	/**
-	 * Filter the localized time a post was last modified.
+	 * Filters the localized time a post was last modified.
 	 *
 	 * @since 2.8.0
 	 *
 	 * @param string $time The formatted time.
 	 * @param string $d    The date format. Accepts 'G', 'U', or php date format. Default 'U'.
 /**
 * Display the weekday on which the post was written.
 *
 * @since 0.71
-* @uses $wp_locale
+*
+* @global WP_Locale $wp_locale
 */
 function the_weekday() {
 	global $wp_locale;
 	$the_weekday = $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) );
 	/**
-	 * Filter the weekday on which the post was written, for display.
+	 * Filters the weekday on which the post was written, for display.
 	 *
 	 * @since 0.71
 	 *
 	 * @param string $the_weekday
 	 */
-	$the_weekday = apply_filters( 'the_weekday', $the_weekday );
+	echo apply_filters( 'the_weekday', $the_weekday );
-	echo $the_weekday;
 }
 /**
 * Display the weekday on which the post was written.
 *
 * Will only output the weekday if the current post's weekday is different from
 * the previous one output.
 *
 * @since 0.71
+*
+* @global WP_Locale       $wp_locale
+* @global string|int|bool $currentday
+* @global string|int|bool $previousweekday
 *
 * @param string $before Optional Output before the date.
 * @param string $after Optional Output after the date.
 */
 function the_weekday_date($before='',$after='') {
 		$the_weekday_date .= $after;
 		$previousweekday = $currentday;
 	}
 	/**
-	 * Filter the localized date on which the post was written, for display.
+	 * Filters the localized date on which the post was written, for display.
 	 *
 	 * @since 0.71
 	 *
 	 * @param string $the_weekday_date
 	 * @param string $before           The HTML to output before the date.
 	$the_weekday_date = apply_filters( 'the_weekday_date', $the_weekday_date, $before, $after );
 	echo $the_weekday_date;
 }
 /**
-* Fire the wp_head action
+* Fire the wp_head action.
+*
+* See {@see 'wp_head'}.
 *
 * @since 1.2.0
 */
 function wp_head() {
 	/**
-	 * Print scripts or data in the head tag on the front end.
+	 * Prints scripts or data in the head tag on the front end.
 	 *
 	 * @since 1.5.0
 	 */
 	do_action( 'wp_head' );
 }
 /**
-* Fire the wp_footer action
+* Fire the wp_footer action.
+*
+* See {@see 'wp_footer'}.
 *
 * @since 1.5.1
 */
 function wp_footer() {
 	/**
-	 * Print scripts or data before the closing body tag on the front end.
+	 * Prints scripts or data before the closing body tag on the front end.
 	 *
 	 * @since 1.5.1
 	 */
 	do_action( 'wp_footer' );
 }
 		'comstitle'	=> __('%1$s %2$s Comments Feed'),
 	);
 	$args = wp_parse_args( $args, $defaults );
-	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['feedtitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link() ) . "\" />\n";
+	/**
-	echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['comstitle'], get_bloginfo('name'), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link( 'comments_' . get_default_feed() ) ) . "\" />\n";
+	 * Filters whether to display the posts feed link.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param bool $show Whether to display the posts feed link. Default true.
+	 */
+	if ( apply_filters( 'feed_links_show_posts_feed', true ) ) {
+		echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['feedtitle'], get_bloginfo( 'name' ), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link() ) . "\" />\n";
+	}
+	/**
+	 * Filters whether to display the comments feed link.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param bool $show Whether to display the comments feed link. Default true.
+	 */
+	if ( apply_filters( 'feed_links_show_comments_feed', true ) ) {
+		echo '<link rel="alternate" type="' . feed_content_type() . '" title="' . esc_attr( sprintf( $args['comstitle'], get_bloginfo( 'name' ), $args['separator'] ) ) . '" href="' . esc_url( get_feed_link( 'comments_' . get_default_feed() ) ) . "\" />\n";
+	}
 }
 /**
 * Display the links to the extra feeds such as category feeds.
 *
 		'singletitle' => __('%1$s %2$s %3$s Comments Feed'),
 		/* translators: 1: blog name, 2: separator(raquo), 3: category name */
 		'cattitle'    => __('%1$s %2$s %3$s Category Feed'),
 		/* translators: 1: blog name, 2: separator(raquo), 3: tag name */
 		'tagtitle'    => __('%1$s %2$s %3$s Tag Feed'),
+		/* translators: 1: blog name, 2: separator(raquo), 3: term name, 4: taxonomy singular name */
+		'taxtitle'    => __('%1$s %2$s %3$s %4$s Feed'),
 		/* translators: 1: blog name, 2: separator(raquo), 3: author name  */
 		'authortitle' => __('%1$s %2$s Posts by %3$s Feed'),
 		/* translators: 1: blog name, 2: separator(raquo), 3: search phrase */
 		'searchtitle' => __('%1$s %2$s Search Results for &#8220;%3$s&#8221; Feed'),
 		/* translators: 1: blog name, 2: separator(raquo), 3: post type name */
 		if ( $term ) {
 			$title = sprintf( $args['tagtitle'], get_bloginfo('name'), $args['separator'], $term->name );
 			$href = get_tag_feed_link( $term->term_id );
 		}
+	} elseif ( is_tax() ) {
+		$term = get_queried_object();
+		$tax = get_taxonomy( $term->taxonomy );
+		$title = sprintf( $args['taxtitle'], get_bloginfo('name'), $args['separator'], $term->name, $tax->labels->singular_name );
+		$href = get_term_feed_link( $term->term_id, $term->taxonomy );
 	} elseif ( is_author() ) {
 		$author_id = intval( get_query_var('author') );
 		$title = sprintf( $args['authortitle'], get_bloginfo('name'), $args['separator'], get_the_author_meta( 'display_name', $author_id ) );
 		$href = get_author_feed_link( $author_id );
 *
 * @link http://archipelago.phrasewise.com/rsd
 * @since 2.0.0
 */
 function rsd_link() {
-	echo '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="' . get_bloginfo('wpurl') . "/xmlrpc.php?rsd\" />\n";
+	echo '<link rel="EditURI" type="application/rsd+xml" title="RSD" href="' . esc_url( site_url( 'xmlrpc.php?rsd', 'rpc' ) ) . '" />' . "\n";
 }
 /**
 * Display the link to the Windows Live Writer manifest file.
 *
-* @link http://msdn.microsoft.com/en-us/library/bb463265.aspx
+* @link https://msdn.microsoft.com/en-us/library/bb463265.aspx
 * @since 2.3.1
 */
 function wlwmanifest_link() {
 	echo '<link rel="wlwmanifest" type="application/wlwmanifest+xml" href="',
 		includes_url( 'wlwmanifest.xml' ), '" /> ', "\n";
 }
 /**
-* Display a noindex meta tag if required by the blog configuration.
+* Displays a noindex meta tag if required by the blog configuration.
 *
 * If a blog is marked as not being public then the noindex meta tag will be
-* output to tell web robots not to index the page content. Add this to the wp_head action.
+* output to tell web robots not to index the page content. Add this to the
-* Typical usage is as a wp_head callback. add_action( 'wp_head', 'noindex' );
+* {@see 'wp_head'} action.
+*
+* Typical usage is as a {@see 'wp_head'} callback:
+*
+*     add_action( 'wp_head', 'noindex' );
 *
 * @see wp_no_robots
 *
 * @since 2.1.0
 */
 function wp_no_robots() {
 	echo "<meta name='robots' content='noindex,follow' />\n";
 }
 /**
-* Whether the user should have a WYSIWIG editor.
+* Display site icon meta tags.
 *
-* Checks that the user requires a WYSIWIG editor and that the editor is
+* @since 4.3.0
-* supported in the users browser.
+*
+* @link https://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#rel-icon HTML5 specification link icon.
+*/
+function wp_site_icon() {
+	if ( ! has_site_icon() && ! is_customize_preview() ) {
+		return;
+	}
+	$meta_tags = array();
+	$icon_32 = get_site_icon_url( 32 );
+	if ( empty( $icon_32 ) && is_customize_preview() ) {
+		$icon_32 = '/favicon.ico'; // Serve default favicon URL in customizer so element can be updated for preview.
+	}
+	if ( $icon_32 ) {
+		$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="32x32" />', esc_url( $icon_32 ) );
+	}
+	$icon_192 = get_site_icon_url( 192 );
+	if ( $icon_192 ) {
+		$meta_tags[] = sprintf( '<link rel="icon" href="%s" sizes="192x192" />', esc_url( $icon_192 ) );
+	}
+	$icon_180 = get_site_icon_url( 180 );
+	if ( $icon_180 ) {
+		$meta_tags[] = sprintf( '<link rel="apple-touch-icon-precomposed" href="%s" />', esc_url( $icon_180 ) );
+	}
+	$icon_270 = get_site_icon_url( 270 );
+	if ( $icon_270 ) {
+		$meta_tags[] = sprintf( '<meta name="msapplication-TileImage" content="%s" />', esc_url( $icon_270 ) );
+	}
+	/**
+	 * Filters the site icon meta tags, so Plugins can add their own.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param array $meta_tags Site Icon meta elements.
+	 */
+	$meta_tags = apply_filters( 'site_icon_meta_tags', $meta_tags );
+	$meta_tags = array_filter( $meta_tags );
+	foreach ( $meta_tags as $meta_tag ) {
+		echo "$meta_tag\n";
+	}
+}
+/**
+* Prints resource hints to browsers for pre-fetching, pre-rendering
+* and pre-connecting to web sites.
+*
+* Gives hints to browsers to prefetch specific pages or render them
+* in the background, to perform DNS lookups or to begin the connection
+* handshake (DNS, TCP, TLS) in the background.
+*
+* These performance improving indicators work by using `<link rel"…">`.
+*
+* @since 4.6.0
+*/
+function wp_resource_hints() {
+	$hints = array(
+		'dns-prefetch' => wp_dependencies_unique_hosts(),
+		'preconnect'   => array(),
+		'prefetch'     => array(),
+		'prerender'    => array(),
+	);
+	/*
+	 * Add DNS prefetch for the Emoji CDN.
+	 * The path is removed in the foreach loop below.
+	 */
+	/** This filter is documented in wp-includes/formatting.php */
+	$hints['dns-prefetch'][] = apply_filters( 'emoji_svg_url', 'https://s.w.org/images/core/emoji/11/svg/' );
+	foreach ( $hints as $relation_type => $urls ) {
+		$unique_urls = array();
+		/**
+		 * Filters domains and URLs for resource hints of relation type.
+		 *
+		 * @since 4.6.0
+		 *
+		 * @param array  $urls          URLs to print for resource hints.
+		 * @param string $relation_type The relation type the URLs are printed for, e.g. 'preconnect' or 'prerender'.
+		 */
+		$urls = apply_filters( 'wp_resource_hints', $urls, $relation_type );
+		foreach ( $urls as $key => $url ) {
+			$atts = array();
+			if ( is_array( $url ) ) {
+				if ( isset( $url['href'] ) ) {
+					$atts = $url;
+					$url  = $url['href'];
+				} else {
+					continue;
+				}
+			}
+			$url = esc_url( $url, array( 'http', 'https' ) );
+			if ( ! $url ) {
+				continue;
+			}
+			if ( isset( $unique_urls[ $url ] ) ) {
+				continue;
+			}
+			if ( in_array( $relation_type, array( 'preconnect', 'dns-prefetch' ) ) ) {
+				$parsed = wp_parse_url( $url );
+				if ( empty( $parsed['host'] ) ) {
+					continue;
+				}
+				if ( 'preconnect' === $relation_type && ! empty( $parsed['scheme'] ) ) {
+					$url = $parsed['scheme'] . '://' . $parsed['host'];
+				} else {
+					// Use protocol-relative URLs for dns-prefetch or if scheme is missing.
+					$url = '//' . $parsed['host'];
+				}
+			}
+			$atts['rel'] = $relation_type;
+			$atts['href'] = $url;
+			$unique_urls[ $url ] = $atts;
+		}
+		foreach ( $unique_urls as $atts ) {
+			$html = '';
+			foreach ( $atts as $attr => $value ) {
+				if ( ! is_scalar( $value ) ||
+				     ( ! in_array( $attr, array( 'as', 'crossorigin', 'href', 'pr', 'rel', 'type' ), true ) && ! is_numeric( $attr ))
+				) {
+					continue;
+				}
+				$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
+				if ( ! is_string( $attr ) ) {
+					$html .= " $value";
+				} else {
+					$html .= " $attr='$value'";
+				}
+			}
+			$html = trim( $html );
+			echo "<link $html />\n";
+		}
+	}
+}
+/**
+* Retrieves a list of unique hosts of all enqueued scripts and styles.
+*
+* @since 4.6.0
+*
+* @return array A list of unique hosts of enqueued scripts and styles.
+*/
+function wp_dependencies_unique_hosts() {
+	global $wp_scripts, $wp_styles;
+	$unique_hosts = array();
+	foreach ( array( $wp_scripts, $wp_styles ) as $dependencies ) {
+		if ( $dependencies instanceof WP_Dependencies && ! empty( $dependencies->queue ) ) {
+			foreach ( $dependencies->queue as $handle ) {
+				if ( ! isset( $dependencies->registered[ $handle ] ) ) {
+					continue;
+				}
+				/* @var _WP_Dependency $dependency */
+				$dependency = $dependencies->registered[ $handle ];
+				$parsed     = wp_parse_url( $dependency->src );
+				if ( ! empty( $parsed['host'] ) && ! in_array( $parsed['host'], $unique_hosts ) && $parsed['host'] !== $_SERVER['SERVER_NAME'] ) {
+					$unique_hosts[] = $parsed['host'];
+				}
+			}
+		}
+	}
+	return $unique_hosts;
+}
+/**
+* Whether the user can access the visual editor.
+*
+* Checks if the user can access the visual editor and that it's supported by the user's browser.
 *
 * @since 2.0.0
 *
-* @return bool
+* @global bool $wp_rich_edit Whether the user can access the visual editor.
+* @global bool $is_gecko     Whether the browser is Gecko-based.
+* @global bool $is_opera     Whether the browser is Opera.
+* @global bool $is_safari    Whether the browser is Safari.
+* @global bool $is_chrome    Whether the browser is Chrome.
+* @global bool $is_IE        Whether the browser is Internet Explorer.
+* @global bool $is_edge      Whether the browser is Microsoft Edge.
+*
+* @return bool True if the user can access the visual editor, false otherwise.
 */
 function user_can_richedit() {
-	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE;
+	global $wp_rich_edit, $is_gecko, $is_opera, $is_safari, $is_chrome, $is_IE, $is_edge;
 	if ( !isset($wp_rich_edit) ) {
 		$wp_rich_edit = false;
 		if ( get_user_option( 'rich_editing' ) == 'true' || ! is_user_logged_in() ) { // default to 'true' for logged out users
 			if ( $is_safari ) {
 				$wp_rich_edit = ! wp_is_mobile() || ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval( $match[1] ) >= 534 );
-			} elseif ( $is_gecko || $is_chrome || $is_IE || ( $is_opera && !wp_is_mobile() ) ) {
+			} elseif ( $is_IE ) {
+				$wp_rich_edit = ( strpos( $_SERVER['HTTP_USER_AGENT'], 'Trident/7.0;' ) !== false );
+			} elseif ( $is_gecko || $is_chrome || $is_edge || ( $is_opera && !wp_is_mobile() ) ) {
 				$wp_rich_edit = true;
 			}
 		}
 	}
 	/**
-	 * Filter whether the user can access the rich (Visual) editor.
+	 * Filters whether the user can access the visual editor.
 	 *
 	 * @since 2.1.0
 	 *
-	 * @param bool $wp_rich_edit Whether the user can access to the rich (Visual) editor.
+	 * @param bool $wp_rich_edit Whether the user can access the visual editor.
 	 */
 	return apply_filters( 'user_can_richedit', $wp_rich_edit );
 }
 /**
 		$ed = get_user_setting('editor', 'tinymce');
 		$r = ( in_array($ed, array('tinymce', 'html', 'test') ) ) ? $ed : $r;
 	}
 	/**
-	 * Filter which editor should be displayed by default.
+	 * Filters which editor should be displayed by default.
 	 *
 	 * @since 2.5.0
 	 *
-	 * @param array $r An array of editors. Accepts 'tinymce', 'html', 'test'.
+	 * @param string $r Which editor should be displayed by default. Either 'tinymce', 'html', or 'test'.
 	 */
 	return apply_filters( 'wp_default_editor', $r );
 }
 /**
 *
 * Using this function is the proper way to output all needed components for both TinyMCE and Quicktags.
 * _WP_Editors should not be used directly. See https://core.trac.wordpress.org/ticket/17144.
 *
 * NOTE: Once initialized the TinyMCE editor cannot be safely moved in the DOM. For that reason
-* running wp_editor() inside of a metabox is not a good idea unless only Quicktags is used.
+* running wp_editor() inside of a meta box is not a good idea unless only Quicktags is used.
 * On the post edit screen several actions can be used to include additional editors
 * containing TinyMCE: 'edit_page_form', 'edit_form_advanced' and 'dbx_post_sidebar'.
 * See https://core.trac.wordpress.org/ticket/19173 for more information.
 *
-* @see wp-includes/class-wp-editor.php
+* @see _WP_Editors::editor()
 * @since 3.3.0
 *
-* @param string $content Initial content for the editor.
+* @param string $content   Initial content for the editor.
 * @param string $editor_id HTML ID attribute value for the textarea and TinyMCE. Can only be /[a-z]+/.
-* @param array $settings See _WP_Editors::editor().
+* @param array  $settings  See _WP_Editors::editor().
 */
 function wp_editor( $content, $editor_id, $settings = array() ) {
-	if ( ! class_exists( '_WP_Editors' ) )
+	if ( ! class_exists( '_WP_Editors', false ) )
 		require( ABSPATH . WPINC . '/class-wp-editor.php' );
 	_WP_Editors::editor($content, $editor_id, $settings);
 }
 /**
-* Retrieve the contents of the search WordPress query variable.
+* Outputs the editor scripts, stylesheets, and default settings.
 *
-* The search query string is passed through {@link esc_attr()}
+* The editor can be initialized when needed after page load.
-* to ensure that it is safe for placing in an html attribute.
+* See wp.editor.initialize() in wp-admin/js/editor.js for initialization options.
+*
+* @uses _WP_Editors
+* @since 4.8.0
+*/
+function wp_enqueue_editor() {
+	if ( ! class_exists( '_WP_Editors', false ) ) {
+		require( ABSPATH . WPINC . '/class-wp-editor.php' );
+	}
+	_WP_Editors::enqueue_default_editor();
+}
+/**
+* Enqueue assets needed by the code editor for the given settings.
+*
+* @since 4.9.0
+*
+* @see wp_enqueue_editor()
+* @see _WP_Editors::parse_settings()
+* @param array $args {
+*     Args.
+*
+*     @type string   $type       The MIME type of the file to be edited.
+*     @type string   $file       Filename to be edited. Extension is used to sniff the type. Can be supplied as alternative to `$type` param.
+*     @type WP_Theme $theme      Theme being edited when on theme editor.
+*     @type string   $plugin     Plugin being edited when on plugin editor.
+*     @type array    $codemirror Additional CodeMirror setting overrides.
+*     @type array    $csslint    CSSLint rule overrides.
+*     @type array    $jshint     JSHint rule overrides.
+*     @type array    $htmlhint   JSHint rule overrides.
+* }
+* @returns array|false Settings for the enqueued code editor, or false if the editor was not enqueued .
+*/
+function wp_enqueue_code_editor( $args ) {
+	if ( is_user_logged_in() && 'false' === wp_get_current_user()->syntax_highlighting ) {
+		return false;
+	}
+	$settings = array(
+		'codemirror' => array(
+			'indentUnit' => 4,
+			'indentWithTabs' => true,
+			'inputStyle' => 'contenteditable',
+			'lineNumbers' => true,
+			'lineWrapping' => true,
+			'styleActiveLine' => true,
+			'continueComments' => true,
+			'extraKeys' => array(
+				'Ctrl-Space' => 'autocomplete',
+				'Ctrl-/' => 'toggleComment',
+				'Cmd-/' => 'toggleComment',
+				'Alt-F' => 'findPersistent',
+				'Ctrl-F'     => 'findPersistent',
+				'Cmd-F'      => 'findPersistent',
+			),
+			'direction' => 'ltr', // Code is shown in LTR even in RTL languages.
+			'gutters' => array(),
+		),
+		'csslint' => array(
+			'errors' => true, // Parsing errors.
+			'box-model' => true,
+			'display-property-grouping' => true,
+			'duplicate-properties' => true,
+			'known-properties' => true,
+			'outline-none' => true,
+		),
+		'jshint' => array(
+			// The following are copied from <https://github.com/WordPress/wordpress-develop/blob/4.8.1/.jshintrc>.
+			'boss' => true,
+			'curly' => true,
+			'eqeqeq' => true,
+			'eqnull' => true,
+			'es3' => true,
+			'expr' => true,
+			'immed' => true,
+			'noarg' => true,
+			'nonbsp' => true,
+			'onevar' => true,
+			'quotmark' => 'single',
+			'trailing' => true,
+			'undef' => true,
+			'unused' => true,
+			'browser' => true,
+			'globals' => array(
+				'_' => false,
+				'Backbone' => false,
+				'jQuery' => false,
+				'JSON' => false,
+				'wp' => false,
+			),
+		),
+		'htmlhint' => array(
+			'tagname-lowercase' => true,
+			'attr-lowercase' => true,
+			'attr-value-double-quotes' => false,
+			'doctype-first' => false,
+			'tag-pair' => true,
+			'spec-char-escape' => true,
+			'id-unique' => true,
+			'src-not-empty' => true,
+			'attr-no-duplication' => true,
+			'alt-require' => true,
+			'space-tab-mixed-disabled' => 'tab',
+			'attr-unsafe-chars' => true,
+		),
+	);
+	$type = '';
+	if ( isset( $args['type'] ) ) {
+		$type = $args['type'];
+		// Remap MIME types to ones that CodeMirror modes will recognize.
+		if ( 'application/x-patch' === $type || 'text/x-patch' === $type ) {
+			$type = 'text/x-diff';
+		}
+	} elseif ( isset( $args['file'] ) && false !== strpos( basename( $args['file'] ), '.' ) ) {
+		$extension = strtolower( pathinfo( $args['file'], PATHINFO_EXTENSION ) );
+		foreach ( wp_get_mime_types() as $exts => $mime ) {
+			if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
+				$type = $mime;
+				break;
+			}
+		}
+		// Supply any types that are not matched by wp_get_mime_types().
+		if ( empty( $type ) ) {
+			switch ( $extension ) {
+				case 'conf':
+					$type = 'text/nginx';
+					break;
+				case 'css':
+					$type = 'text/css';
+					break;
+				case 'diff':
+				case 'patch':
+					$type = 'text/x-diff';
+					break;
+				case 'html':
+				case 'htm':
+					$type = 'text/html';
+					break;
+				case 'http':
+					$type = 'message/http';
+					break;
+				case 'js':
+					$type = 'text/javascript';
+					break;
+				case 'json':
+					$type = 'application/json';
+					break;
+				case 'jsx':
+					$type = 'text/jsx';
+					break;
+				case 'less':
+					$type = 'text/x-less';
+					break;
+				case 'md':
+					$type = 'text/x-gfm';
+					break;
+				case 'php':
+				case 'phtml':
+				case 'php3':
+				case 'php4':
+				case 'php5':
+				case 'php7':
+				case 'phps':
+					$type = 'application/x-httpd-php';
+					break;
+				case 'scss':
+					$type = 'text/x-scss';
+					break;
+				case 'sass':
+					$type = 'text/x-sass';
+					break;
+				case 'sh':
+				case 'bash':
+					$type = 'text/x-sh';
+					break;
+				case 'sql':
+					$type = 'text/x-sql';
+					break;
+				case 'svg':
+					$type = 'application/svg+xml';
+					break;
+				case 'xml':
+					$type = 'text/xml';
+					break;
+				case 'yml':
+				case 'yaml':
+					$type = 'text/x-yaml';
+					break;
+				case 'txt':
+				default:
+					$type = 'text/plain';
+					break;
+			}
+		}
+	}
+	if ( 'text/css' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'css',
+			'lint' => true,
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+	} elseif ( 'text/x-scss' === $type || 'text/x-less' === $type || 'text/x-sass' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => $type,
+			'lint' => false,
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+	} elseif ( 'text/x-diff' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'diff',
+		) );
+	} elseif ( 'text/html' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'htmlmixed',
+			'lint' => true,
+			'autoCloseBrackets' => true,
+			'autoCloseTags' => true,
+			'matchTags' => array(
+				'bothTags' => true,
+			),
+		) );
+		if ( ! current_user_can( 'unfiltered_html' ) ) {
+			$settings['htmlhint']['kses'] = wp_kses_allowed_html( 'post' );
+		}
+	} elseif ( 'text/x-gfm' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'gfm',
+			'highlightFormatting' => true,
+		) );
+	} elseif ( 'application/javascript' === $type || 'text/javascript' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'javascript',
+			'lint' => true,
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+	} elseif ( false !== strpos( $type, 'json' ) ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => array(
+				'name' => 'javascript',
+			),
+			'lint' => true,
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+		if ( 'application/ld+json' === $type ) {
+			$settings['codemirror']['mode']['jsonld'] = true;
+		} else {
+			$settings['codemirror']['mode']['json'] = true;
+		}
+	} elseif ( false !== strpos( $type, 'jsx' ) ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'jsx',
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+	} elseif ( 'text/x-markdown' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'markdown',
+			'highlightFormatting' => true,
+		) );
+	} elseif ( 'text/nginx' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'nginx',
+		) );
+	} elseif ( 'application/x-httpd-php' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'php',
+			'autoCloseBrackets' => true,
+			'autoCloseTags' => true,
+			'matchBrackets' => true,
+			'matchTags' => array(
+				'bothTags' => true,
+			),
+		) );
+	} elseif ( 'text/x-sql' === $type || 'text/x-mysql' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'sql',
+			'autoCloseBrackets' => true,
+			'matchBrackets' => true,
+		) );
+	} elseif ( false !== strpos( $type, 'xml' ) ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'xml',
+			'autoCloseBrackets' => true,
+			'autoCloseTags' => true,
+			'matchTags' => array(
+				'bothTags' => true,
+			),
+		) );
+	} elseif ( 'text/x-yaml' === $type ) {
+		$settings['codemirror'] = array_merge( $settings['codemirror'], array(
+			'mode' => 'yaml',
+		) );
+	} else {
+		$settings['codemirror']['mode'] = $type;
+	}
+	if ( ! empty( $settings['codemirror']['lint'] ) ) {
+		$settings['codemirror']['gutters'][] = 'CodeMirror-lint-markers';
+	}
+	// Let settings supplied via args override any defaults.
+	foreach ( wp_array_slice_assoc( $args, array( 'codemirror', 'csslint', 'jshint', 'htmlhint' ) ) as $key => $value ) {
+		$settings[ $key ] = array_merge(
+			$settings[ $key ],
+			$value
+		);
+	}
+	/**
+	 * Filters settings that are passed into the code editor.
+	 *
+	 * Returning a falsey value will disable the syntax-highlighting code editor.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param array $settings The array of settings passed to the code editor. A falsey value disables the editor.
+	 * @param array $args {
+	 *     Args passed when calling `wp_enqueue_code_editor()`.
+	 *
+	 *     @type string   $type       The MIME type of the file to be edited.
+	 *     @type string   $file       Filename being edited.
+	 *     @type WP_Theme $theme      Theme being edited when on theme editor.
+	 *     @type string   $plugin     Plugin being edited when on plugin editor.
+	 *     @type array    $codemirror Additional CodeMirror setting overrides.
+	 *     @type array    $csslint    CSSLint rule overrides.
+	 *     @type array    $jshint     JSHint rule overrides.
+	 *     @type array    $htmlhint   JSHint rule overrides.
+	 * }
+	 */
+	$settings = apply_filters( 'wp_code_editor_settings', $settings, $args );
+	if ( empty( $settings ) || empty( $settings['codemirror'] ) ) {
+		return false;
+	}
+	wp_enqueue_script( 'code-editor' );
+	wp_enqueue_style( 'code-editor' );
+	if ( isset( $settings['codemirror']['mode'] ) ) {
+		$mode = $settings['codemirror']['mode'];
+		if ( is_string( $mode ) ) {
+			$mode = array(
+				'name' => $mode,
+			);
+		}
+		if ( ! empty( $settings['codemirror']['lint'] ) ) {
+			switch ( $mode['name'] ) {
+				case 'css':
+				case 'text/css':
+				case 'text/x-scss':
+				case 'text/x-less':
+					wp_enqueue_script( 'csslint' );
+					break;
+				case 'htmlmixed':
+				case 'text/html':
+				case 'php':
+				case 'application/x-httpd-php':
+				case 'text/x-php':
+					wp_enqueue_script( 'htmlhint' );
+					wp_enqueue_script( 'csslint' );
+					wp_enqueue_script( 'jshint' );
+					if ( ! current_user_can( 'unfiltered_html' ) ) {
+						wp_enqueue_script( 'htmlhint-kses' );
+					}
+					break;
+				case 'javascript':
+				case 'application/ecmascript':
+				case 'application/json':
+				case 'application/javascript':
+				case 'application/ld+json':
+				case 'text/typescript':
+				case 'application/typescript':
+					wp_enqueue_script( 'jshint' );
+					wp_enqueue_script( 'jsonlint' );
+					break;
+			}
+		}
+	}
+	wp_add_inline_script( 'code-editor', sprintf( 'jQuery.extend( wp.codeEditor.defaultSettings, %s );', wp_json_encode( $settings ) ) );
+	/**
+	 * Fires when scripts and styles are enqueued for the code editor.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param array $settings Settings for the enqueued code editor.
+	 */
+	do_action( 'wp_enqueue_code_editor', $settings );
+	return $settings;
+}
+/**
+* Retrieves the contents of the search WordPress query variable.
+*
+* The search query string is passed through esc_attr() to ensure that it is safe
+* for placing in an html attribute.
 *
 * @since 2.3.0
 *
 * @param bool $escaped Whether the result is escaped. Default true.
-* 	Only use when you are later escaping it. Do not use unescaped.
+* 	                    Only use when you are later escaping it. Do not use unescaped.
 * @return string
 */
 function get_search_query( $escaped = true ) {
 	/**
-	 * Filter the contents of the search query variable.
+	 * Filters the contents of the search query variable.
 	 *
 	 * @since 2.3.0
 	 *
 	 * @param mixed $search Contents of the search query variable.
 	 */
 		$query = esc_attr( $query );
 	return $query;
 }
 /**
-* Display the contents of the search query variable.
+* Displays the contents of the search query variable.
 *
-* The search query string is passed through {@link esc_attr()}
+* The search query string is passed through esc_attr() to ensure that it is safe
-* to ensure that it is safe for placing in an html attribute.
+* for placing in an html attribute.
 *
 * @since 2.1.0
 */
 function the_search_query() {
 	/**
-	 * Filter the contents of the search query variable for display.
+	 * Filters the contents of the search query variable for display.
 	 *
 	 * @since 2.3.0
 	 *
 	 * @param mixed $search Contents of the search query variable.
 	 */
 	echo esc_attr( apply_filters( 'the_search_query', get_search_query( false ) ) );
 }
 /**
-* Display the language attributes for the html tag.
+* Gets the language attributes for the html tag.
 *
 * Builds up a set of html attributes containing the text direction and language
 * information for the page.
 *
-* @since 2.1.0
+* @since 4.3.0
 *
-* @param string $doctype The type of html document (xhtml|html).
+* @param string $doctype Optional. The type of html document. Accepts 'xhtml' or 'html'. Default 'html'.
 */
-function language_attributes($doctype = 'html') {
+function get_language_attributes( $doctype = 'html' ) {
 	$attributes = array();
 	if ( function_exists( 'is_rtl' ) && is_rtl() )
 		$attributes[] = 'dir="rtl"';
-	if ( $lang = get_bloginfo('language') ) {
+	if ( $lang = get_bloginfo( 'language' ) ) {
-		if ( get_option('html_type') == 'text/html' || $doctype == 'html' )
+		if ( get_option( 'html_type' ) == 'text/html' || $doctype == 'html' ) {
-			$attributes[] = "lang=\"$lang\"";
+			$attributes[] = 'lang="' . esc_attr( $lang ) . '"';
+		}
-		if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' )
-			$attributes[] = "xml:lang=\"$lang\"";
+		if ( get_option( 'html_type' ) != 'text/html' || $doctype == 'xhtml' ) {
+			$attributes[] = 'xml:lang="' . esc_attr( $lang ) . '"';
+		}
 	}
 	$output = implode(' ', $attributes);
 	/**
-	 * Filter the language attributes for display in the html tag.
+	 * Filters the language attributes for display in the html tag.
 	 *
 	 * @since 2.5.0
+	 * @since 4.3.0 Added the `$doctype` parameter.
 	 *
 	 * @param string $output A space-separated list of language attributes.
-	 */
+	 * @param string $doctype The type of html document (xhtml|html).
-	echo apply_filters( 'language_attributes', $output );
+	 */
+	return apply_filters( 'language_attributes', $output, $doctype );
+}
+/**
+* Displays the language attributes for the html tag.
+*
+* Builds up a set of html attributes containing the text direction and language
+* information for the page.
+*
+* @since 2.1.0
+* @since 4.3.0 Converted into a wrapper for get_language_attributes().
+*
+* @param string $doctype Optional. The type of html document. Accepts 'xhtml' or 'html'. Default 'html'.
+*/
+function language_attributes( $doctype = 'html' ) {
+	echo get_language_attributes( $doctype );
 }
 /**
 * Retrieve paginated link for archive post pages.
 *
 * arguments. The 'end_size' argument is how many numbers on either the start
 * and the end list edges, by default is 1. The 'mid_size' argument is how many
 * numbers to either side of current page, but not including current page.
 *
 * It is possible to add query vars to the link by using the 'add_args' argument
-* and see {@link add_query_arg()} for more information.
+* and see add_query_arg() for more information.
 *
 * The 'before_page_number' and 'after_page_number' arguments allow users to
 * augment the links themselves. Typically this might be to add context to the
 * numbered links so that screen reader users understand what the links are for.
 * The text strings are added before and after the page number - within the
 * anchor tag.
 *
 * @since 2.1.0
+* @since 4.9.0 Added the `aria_current` argument.
+*
+* @global WP_Query   $wp_query
+* @global WP_Rewrite $wp_rewrite
 *
 * @param string|array $args {
 *     Optional. Array or string of arguments for generating paginated links for archives.
 *
 *     @type string $base               Base of the paginated url. Default empty.
 *     @type string $format             Format for the pagination structure. Default empty.
 *     @type int    $total              The total amount of pages. Default is the value WP_Query's
 *                                      `max_num_pages` or 1.
 *     @type int    $current            The current page number. Default is 'paged' query var or 1.
+*     @type string $aria_current       The value for the aria-current attribute. Possible values are 'page',
+*                                      'step', 'location', 'date', 'time', 'true', 'false'. Default is 'page'.
 *     @type bool   $show_all           Whether to show all pages. Default false.
 *     @type int    $end_size           How many numbers on either the start and the end list edges.
 *                                      Default 1.
 *     @type int    $mid_size           How many numbers to either side of the current pages. Default 2.
 *     @type bool   $prev_next          Whether to include the previous and next links in the list. Default true.
-*     @type bool   $prev_text          The previous page text. Default '« Previous'.
+*     @type bool   $prev_text          The previous page text. Default '&laquo; Previous'.
-*     @type bool   $next_text          The next page text. Default '« Previous'.
+*     @type bool   $next_text          The next page text. Default 'Next &raquo;'.
 *     @type string $type               Controls format of the returned value. Possible values are 'plain',
 *                                      'array' and 'list'. Default is 'plain'.
 *     @type array  $add_args           An array of query args to add. Default false.
 *     @type string $add_fragment       A string to append to each link. Default empty.
 *     @type string $before_page_number A string to appear before the page number. Default empty.
 *     @type string $after_page_number  A string to append after the page number. Default empty.
 * }
-* @return array|string String of page links or array of page links.
+* @return array|string|void String of page links or array of page links.
 */
 function paginate_links( $args = '' ) {
 	global $wp_query, $wp_rewrite;
 	// Setting up default values based on the current URL.
 	// URL base depends on permalink settings.
 	$format  = $wp_rewrite->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
 	$format .= $wp_rewrite->using_permalinks() ? user_trailingslashit( $wp_rewrite->pagination_base . '/%#%', 'paged' ) : '?paged=%#%';
 	$defaults = array(
-		'base' => $pagenum_link, // http://example.com/all_posts.php%_% : %_% is replaced by format (below)
+		'base'               => $pagenum_link, // http://example.com/all_posts.php%_% : %_% is replaced by format (below)
-		'format' => $format, // ?page=%#% : %#% is replaced by the page number
+		'format'             => $format, // ?page=%#% : %#% is replaced by the page number
-		'total' => $total,
+		'total'              => $total,
-		'current' => $current,
+		'current'            => $current,
-		'show_all' => false,
+		'aria_current'       => 'page',
-		'prev_next' => true,
+		'show_all'           => false,
-		'prev_text' => __('&laquo; Previous'),
+		'prev_next'          => true,
-		'next_text' => __('Next &raquo;'),
+		'prev_text'          => __( '&laquo; Previous' ),
-		'end_size' => 1,
+		'next_text'          => __( 'Next &raquo;' ),
-		'mid_size' => 2,
+		'end_size'           => 1,
-		'type' => 'plain',
+		'mid_size'           => 2,
-		'add_args' => array(), // array of query args to add
+		'type'               => 'plain',
-		'add_fragment' => '',
+		'add_args'           => array(), // array of query args to add
+		'add_fragment'       => '',
 		'before_page_number' => '',
-		'after_page_number' => ''
+		'after_page_number'  => '',
 	);
 	$args = wp_parse_args( $args, $defaults );
 	if ( ! is_array( $args['add_args'] ) ) {
 	}
 	// Merge additional query vars found in the original URL into 'add_args' array.
 	if ( isset( $url_parts[1] ) ) {
 		// Find the format argument.
-		$format_query = parse_url( str_replace( '%_%', $args['format'], $args['base'] ), PHP_URL_QUERY );
+		$format = explode( '?', str_replace( '%_%', $args['format'], $args['base'] ) );
-		wp_parse_str( $format_query, $format_arg );
+		$format_query = isset( $format[1] ) ? $format[1] : '';
+		wp_parse_str( $format_query, $format_args );
+		// Find the query args of the requested URL.
+		wp_parse_str( $url_parts[1], $url_query_args );
 		// Remove the format argument from the array of query arguments, to avoid overwriting custom format.
-		wp_parse_str( remove_query_arg( array_keys( $format_arg ), $url_parts[1] ), $query_args );
+		foreach ( $format_args as $format_arg => $format_arg_value ) {
-		$args['add_args'] = array_merge( $args['add_args'], urlencode_deep( $query_args ) );
+			unset( $url_query_args[ $format_arg ] );
+		}
+		$args['add_args'] = array_merge( $args['add_args'], urlencode_deep( $url_query_args ) );
 	}
 	// Who knows what else people pass in $args
 	$total = (int) $args['total'];
 	if ( $total < 2 ) {
 		if ( $add_args )
 			$link = add_query_arg( $add_args, $link );
 		$link .= $args['add_fragment'];
 		/**
-		 * Filter the paginated links for the given archive pages.
+		 * Filters the paginated links for the given archive pages.
 		 *
 		 * @since 3.0.0
 		 *
 		 * @param string $link The paginated link URL.
 		 */
 		$page_links[] = '<a class="prev page-numbers" href="' . esc_url( apply_filters( 'paginate_links', $link ) ) . '">' . $args['prev_text'] . '</a>';
 	endif;
 	for ( $n = 1; $n <= $total; $n++ ) :
 		if ( $n == $current ) :
-			$page_links[] = "<span class='page-numbers current'>" . $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number'] . "</span>";
+			$page_links[] = "<span aria-current='" . esc_attr( $args['aria_current'] ) . "' class='page-numbers current'>" . $args['before_page_number'] . number_format_i18n( $n ) . $args['after_page_number'] . "</span>";
 			$dots = true;
 		else :
 			if ( $args['show_all'] || ( $n <= $end_size || ( $current && $n >= $current - $mid_size && $n <= $current + $mid_size ) || $n > $total - $end_size ) ) :
 				$link = str_replace( '%_%', 1 == $n ? '' : $args['format'], $args['base'] );
 				$link = str_replace( '%#%', $n, $link );
 				$page_links[] = '<span class="page-numbers dots">' . __( '&hellip;' ) . '</span>';
 				$dots = false;
 			endif;
 		endif;
 	endfor;
-	if ( $args['prev_next'] && $current && ( $current < $total || -1 == $total ) ) :
+	if ( $args['prev_next'] && $current && $current < $total ) :
 		$link = str_replace( '%_%', $args['format'], $args['base'] );
 		$link = str_replace( '%#%', $current + 1, $link );
 		if ( $add_args )
 			$link = add_query_arg( $add_args, $link );
 		$link .= $args['add_fragment'];
 *         '#07273E', '#14568A', '#D54E21', '#2683AE'
 *     ) );
 *
 * @since 2.5.0
 *
-* @todo Properly document optional arguments as such
+* @global array $_wp_admin_css_colors
 *
-* @param string $key The unique key for this theme.
+* @param string $key    The unique key for this theme.
-* @param string $name The name of the theme.
+* @param string $name   The name of the theme.
-* @param string $url The url of the css file containing the colour scheme.
+* @param string $url    The URL of the CSS file containing the color scheme.
-* @param array $colors Optional An array of CSS color definitions which are used to give the user a feel for the theme.
+* @param array  $colors Optional. An array of CSS color definition strings which are used
-* @param array $icons Optional An array of CSS color definitions used to color any SVG icons
+*                       to give the user a feel for the theme.
+* @param array  $icons {
+*     Optional. CSS color definitions used to color any SVG icons.
+*
+*     @type string $base    SVG icon base color.
+*     @type string $focus   SVG icon color on focus.
+*     @type string $current SVG icon color of current admin menu link.
+* }
 */
 function wp_admin_css_color( $key, $name, $url, $colors = array(), $icons = array() ) {
 	global $_wp_admin_css_colors;
 	if ( !isset($_wp_admin_css_colors) )
 *
 * @since 3.0.0
 */
 function register_admin_color_schemes() {
 	$suffix = is_rtl() ? '-rtl' : '';
-	$suffix .= defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
+	$suffix .= SCRIPT_DEBUG ? '' : '.min';
 	wp_admin_css_color( 'fresh', _x( 'Default', 'admin color scheme' ),
 		false,
 		array( '#222', '#333', '#0073aa', '#00a0d2' ),
-		array( 'base' => '#999', 'focus' => '#00a0d2', 'current' => '#fff' )
+		array( 'base' => '#82878c', 'focus' => '#00a0d2', 'current' => '#fff' )
 	);
 	// Other color schemes are not available when running out of src
-	if ( false !== strpos( $GLOBALS['wp_version'], '-src' ) )
+	if ( false !== strpos( get_bloginfo( 'version' ), '-src' ) ) {
 		return;
+	}
 	wp_admin_css_color( 'light', _x( 'Light', 'admin color scheme' ),
 		admin_url( "css/colors/light/colors$suffix.css" ),
 		array( '#e5e5e5', '#999', '#d64e07', '#04a4cc' ),
 		array( 'base' => '#999', 'focus' => '#ccc', 'current' => '#ccc' )
 	);
 }
 /**
-* Display the URL of a WordPress admin CSS file.
+* Displays the URL of a WordPress admin CSS file.
 *
-* @see WP_Styles::_css_href and its style_loader_src filter.
+* @see WP_Styles::_css_href and its {@see 'style_loader_src'} filter.
 *
 * @since 2.3.0
 *
 * @param string $file file relative to wp-admin/ without its ".css" extension.
+* @return string
 */
 function wp_admin_css_uri( $file = 'wp-admin' ) {
 	if ( defined('WP_INSTALLING') ) {
 		$_file = "./$file.css";
 	} else {
 		$_file = admin_url("$file.css");
 	}
 	$_file = add_query_arg( 'version', get_bloginfo( 'version' ),  $_file );
 	/**
-	 * Filter the URI of a WordPress admin CSS file.
+	 * Filters the URI of a WordPress admin CSS file.
 	 *
 	 * @since 2.3.0
 	 *
 	 * @param string $_file Relative path to the file with query arguments attached.
 	 * @param string $file  Relative path to the file, minus its ".css" extension.
 /**
 * Enqueues or directly prints a stylesheet link to the specified CSS file.
 *
 * "Intelligently" decides to enqueue or to print the CSS file. If the
-* 'wp_print_styles' action has *not* yet been called, the CSS file will be
+* {@see 'wp_print_styles'} action has *not* yet been called, the CSS file will be
-* enqueued. If the wp_print_styles action *has* been called, the CSS link will
+* enqueued. If the {@see 'wp_print_styles'} action has been called, the CSS link will
 * be printed. Printing may be forced by passing true as the $force_echo
 * (second) parameter.
 *
 * For backward compatibility with WordPress 2.3 calling method: If the $file
 * (first) parameter does not correspond to a registered CSS file, we assume
 * $file is a file relative to wp-admin/ without its ".css" extension. A
 * stylesheet link to that generated URL is printed.
 *
 * @since 2.3.0
-* @uses $wp_styles WordPress Styles Object
+*
-*
+* @param string $file       Optional. Style handle name or file name (without ".css" extension) relative
-* @param string $file Optional. Style handle name or file name (without ".css" extension) relative
+* 	                         to wp-admin/. Defaults to 'wp-admin'.
-* 	 to wp-admin/. Defaults to 'wp-admin'.
+* @param bool   $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
-* @param bool $force_echo Optional. Force the stylesheet link to be printed rather than enqueued.
 */
 function wp_admin_css( $file = 'wp-admin', $force_echo = false ) {
-	global $wp_styles;
-	if ( ! ( $wp_styles instanceof WP_Styles ) ) {
-		$wp_styles = new WP_Styles();
-	}
 	// For backward compatibility
 	$handle = 0 === strpos( $file, 'css/' ) ? substr( $file, 4 ) : $file;
-	if ( $wp_styles->query( $handle ) ) {
+	if ( wp_styles()->query( $handle ) ) {
 		if ( $force_echo || did_action( 'wp_print_styles' ) ) // we already printed the style queue. Print this one immediately
 			wp_print_styles( $handle );
 		else // Add to style queue
 			wp_enqueue_style( $handle );
 		return;
 	}
 	/**
-	 * Filter the stylesheet link to the specified CSS file.
+	 * Filters the stylesheet link to the specified CSS file.
 	 *
 	 * If the site is set to display right-to-left, the RTL stylesheet link
 	 * will be used instead.
 	 *
 	 * @since 2.3.0
-	 *
+	 * @param string $stylesheet_link HTML link element for the stylesheet.
-	 * @param string $file Style handle name or filename (without ".css" extension)
+	 * @param string $file            Style handle name or filename (without ".css" extension)
-	 *                     relative to wp-admin/. Defaults to 'wp-admin'.
+	 *                                relative to wp-admin/. Defaults to 'wp-admin'.
 	 */
 	echo apply_filters( 'wp_admin_css', "<link rel='stylesheet' href='" . esc_url( wp_admin_css_uri( $file ) ) . "' type='text/css' />\n", $file );
 	if ( function_exists( 'is_rtl' ) && is_rtl() ) {
 		/** This filter is documented in wp-includes/general-template.php */
 	if ( is_network_admin() )
 		add_action( 'admin_head', '_thickbox_path_admin_subfolder' );
 }
 /**
-* Display the XHTML generator that is generated on the wp_head hook.
+* Displays the XHTML generator that is generated on the wp_head hook.
+*
+* See {@see 'wp_head'}.
 *
 * @since 2.5.0
 */
 function wp_generator() {
 	/**
-	 * Filter the output of the XHTML generator tag.
+	 * Filters the output of the XHTML generator tag.
 	 *
 	 * @since 2.5.0
 	 *
 	 * @param string $generator_type The XHTML generator.
 	 */
 /**
 * Display the generator XML or Comment for RSS, ATOM, etc.
 *
 * Returns the correct generator type for the requested output format. Allows
-* for a plugin to filter generators overall the the_generator filter.
+* for a plugin to filter generators overall the {@see 'the_generator'} filter.
 *
 * @since 2.5.0
 *
 * @param string $type The type of generator to output - (html|xhtml|atom|rss2|rdf|comment|export).
 */
 function the_generator( $type ) {
 	/**
-	 * Filter the output of the XHTML generator tag for display.
+	 * Filters the output of the XHTML generator tag for display.
 	 *
 	 * @since 2.5.0
 	 *
 	 * @param string $generator_type The generator output.
 	 * @param string $type           The type of generator to output. Accepts 'html',
 /**
 * Creates the generator XML or Comment for RSS, ATOM, etc.
 *
 * Returns the correct generator type for the requested output format. Allows
 * for a plugin to filter generators on an individual basis using the
-* 'get_the_generator_{$type}' filter.
+* {@see 'get_the_generator_$type'} filter.
 *
 * @since 2.5.0
 *
 * @param string $type The type of generator to return - (html|xhtml|atom|rss2|rdf|comment|export).
-* @return string The HTML content for the generator.
+* @return string|void The HTML content for the generator.
 */
 function get_the_generator( $type = '' ) {
 	if ( empty( $type ) ) {
 		$current_filter = current_filter();
 		}
 	}
 	switch ( $type ) {
 		case 'html':
-			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '">';
+			$gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '">';
 			break;
 		case 'xhtml':
-			$gen = '<meta name="generator" content="WordPress ' . get_bloginfo( 'version' ) . '" />';
+			$gen = '<meta name="generator" content="WordPress ' . esc_attr( get_bloginfo( 'version' ) ) . '" />';
 			break;
 		case 'atom':
-			$gen = '<generator uri="http://wordpress.org/" version="' . get_bloginfo_rss( 'version' ) . '">WordPress</generator>';
+			$gen = '<generator uri="https://wordpress.org/" version="' . esc_attr( get_bloginfo_rss( 'version' ) ) . '">WordPress</generator>';
 			break;
 		case 'rss2':
-			$gen = '<generator>http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '</generator>';
+			$gen = '<generator>' . esc_url_raw( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '</generator>';
 			break;
 		case 'rdf':
-			$gen = '<admin:generatorAgent rdf:resource="http://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) . '" />';
+			$gen = '<admin:generatorAgent rdf:resource="' . esc_url_raw( 'https://wordpress.org/?v=' . get_bloginfo_rss( 'version' ) ) . '" />';
 			break;
 		case 'comment':
-			$gen = '<!-- generator="WordPress/' . get_bloginfo( 'version' ) . '" -->';
+			$gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo( 'version' ) ) . '" -->';
 			break;
 		case 'export':
-			$gen = '<!-- generator="WordPress/' . get_bloginfo_rss('version') . '" created="'. date('Y-m-d H:i') . '" -->';
+			$gen = '<!-- generator="WordPress/' . esc_attr( get_bloginfo_rss( 'version' ) ) . '" created="' . date( 'Y-m-d H:i' ) . '" -->';
 			break;
 	}
 	/**
-	 * Filter the HTML for the retrieved generator type.
+	 * Filters the HTML for the retrieved generator type.
 	 *
 	 * The dynamic portion of the hook name, `$type`, refers to the generator type.
 	 *
 	 * @since 2.5.0
 	 *
-	 * @param string $gen  The HTML markup output to {@see wp_head()}.
+	 * @param string $gen  The HTML markup output to wp_head().
 	 * @param string $type The type of generator. Accepts 'html', 'xhtml', 'atom',
 	 *                     'rss2', 'rdf', 'comment', 'export'.
 	 */
 	return apply_filters( "get_the_generator_{$type}", $gen, $type );
 }
 *
 * @since 1.0.0
 *
 * @param mixed $checked One of the values to compare
 * @param mixed $current (true) The other value to compare if not just true
-* @param bool $echo Whether to echo or just return the string
+* @param bool  $echo    Whether to echo or just return the string
 * @return string html attribute or empty string
 */
 function checked( $checked, $current = true, $echo = true ) {
 	return __checked_selected_helper( $checked, $current, $echo, 'checked' );
 }
 * Compares the first two arguments and if identical marks as selected
 *
 * @since 1.0.0
 *
 * @param mixed $selected One of the values to compare
-* @param mixed $current (true) The other value to compare if not just true
+* @param mixed $current  (true) The other value to compare if not just true
-* @param bool $echo Whether to echo or just return the string
+* @param bool  $echo     Whether to echo or just return the string
 * @return string html attribute or empty string
 */
 function selected( $selected, $current = true, $echo = true ) {
 	return __checked_selected_helper( $selected, $current, $echo, 'selected' );
 }
 * Compares the first two arguments and if identical marks as disabled
 *
 * @since 3.0.0
 *
 * @param mixed $disabled One of the values to compare
-* @param mixed $current (true) The other value to compare if not just true
+* @param mixed $current  (true) The other value to compare if not just true
-* @param bool $echo Whether to echo or just return the string
+* @param bool  $echo     Whether to echo or just return the string
 * @return string html attribute or empty string
 */
 function disabled( $disabled, $current = true, $echo = true ) {
 	return __checked_selected_helper( $disabled, $current, $echo, 'disabled' );
 }
 /**
-* Private helper function for checked, selected, and disabled.
+* Outputs the html readonly attribute.
+*
+* Compares the first two arguments and if identical marks as readonly
+*
+* @since 4.9.0
+*
+* @param mixed $readonly One of the values to compare
+* @param mixed $current  (true) The other value to compare if not just true
+* @param bool  $echo     Whether to echo or just return the string
+* @return string html attribute or empty string
+*/
+function readonly( $readonly, $current = true, $echo = true ) {
+	return __checked_selected_helper( $readonly, $current, $echo, 'readonly' );
+}
+/**
+* Private helper function for checked, selected, disabled and readonly.
 *
 * Compares the first two arguments and if identical marks as $type
 *
 * @since 2.8.0
 * @access private
 *
-* @param mixed $helper One of the values to compare
+* @param mixed  $helper  One of the values to compare
-* @param mixed $current (true) The other value to compare if not just true
+* @param mixed  $current (true) The other value to compare if not just true
-* @param bool $echo Whether to echo or just return the string
+* @param bool   $echo    Whether to echo or just return the string
-* @param string $type The type of checked|selected|disabled we are doing
+* @param string $type    The type of checked|selected|disabled|readonly we are doing
 * @return string html attribute or empty string
 */
 function __checked_selected_helper( $helper, $current, $echo, $type ) {
 	if ( (string) $helper === (string) $current )
 		$result = " $type='$type'";

changeset 7	cf61fcea0001
parent 5	5e2f62d02dcd
child 9	177826044cd9