wp/wp-includes/link-template.php
changeset 9 177826044cd9
parent 7 cf61fcea0001
child 16 a86126ab1dd4
--- a/wp/wp-includes/link-template.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/link-template.php	Mon Oct 14 18:28:13 2019 +0200
@@ -44,12 +44,13 @@
  *                            for use in the filter. Default empty string.
  * @return string The URL with the trailing slash appended or stripped.
  */
-function user_trailingslashit($string, $type_of_url = '') {
+function user_trailingslashit( $string, $type_of_url = '' ) {
 	global $wp_rewrite;
-	if ( $wp_rewrite->use_trailing_slashes )
-		$string = trailingslashit($string);
-	else
-		$string = untrailingslashit($string);
+	if ( $wp_rewrite->use_trailing_slashes ) {
+		$string = trailingslashit( $string );
+	} else {
+		$string = untrailingslashit( $string );
+	}
 
 	/**
 	 * Filters the trailing-slashed string, depending on whether the site is set to use trailing slashes.
@@ -79,7 +80,7 @@
 	switch ( strtolower( $mode ) ) {
 		case 'title':
 			$title = sanitize_title( $post->post_title ) . '-' . $post->ID;
-			echo '<a id="'.$title.'"></a>';
+			echo '<a id="' . $title . '"></a>';
 			break;
 		case 'id':
 		default:
@@ -123,31 +124,33 @@
 		'%hour%',
 		'%minute%',
 		'%second%',
-		$leavename? '' : '%postname%',
+		$leavename ? '' : '%postname%',
 		'%post_id%',
 		'%category%',
 		'%author%',
-		$leavename? '' : '%pagename%',
+		$leavename ? '' : '%pagename%',
 	);
 
 	if ( is_object( $post ) && isset( $post->filter ) && 'sample' == $post->filter ) {
 		$sample = true;
 	} else {
-		$post = get_post( $post );
+		$post   = get_post( $post );
 		$sample = false;
 	}
 
-	if ( empty($post->ID) )
+	if ( empty( $post->ID ) ) {
 		return false;
-
-	if ( $post->post_type == 'page' )
-		return get_page_link($post, $leavename, $sample);
-	elseif ( $post->post_type == 'attachment' )
+	}
+
+	if ( $post->post_type == 'page' ) {
+		return get_page_link( $post, $leavename, $sample );
+	} elseif ( $post->post_type == 'attachment' ) {
 		return get_attachment_link( $post, $leavename );
-	elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) )
-		return get_post_permalink($post, $leavename, $sample);
-
-	$permalink = get_option('permalink_structure');
+	} elseif ( in_array( $post->post_type, get_post_types( array( '_builtin' => false ) ) ) ) {
+		return get_post_permalink( $post, $leavename, $sample );
+	}
+
+	$permalink = get_option( 'permalink_structure' );
 
 	/**
 	 * Filters the permalink structure for a post before token replacement occurs.
@@ -162,16 +165,19 @@
 	 */
 	$permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename );
 
-	if ( '' != $permalink && !in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {
-		$unixtime = strtotime($post->post_date);
+	if ( '' != $permalink && ! in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {
+		$unixtime = strtotime( $post->post_date );
 
 		$category = '';
-		if ( strpos($permalink, '%category%') !== false ) {
-			$cats = get_the_category($post->ID);
+		if ( strpos( $permalink, '%category%' ) !== false ) {
+			$cats = get_the_category( $post->ID );
 			if ( $cats ) {
-				$cats = wp_list_sort( $cats, array(
-					'term_id' => 'ASC',
-				) );
+				$cats = wp_list_sort(
+					$cats,
+					array(
+						'term_id' => 'ASC',
+					)
+				);
 
 				/**
 				 * Filters the category that gets used in the %category% permalink token.
@@ -185,13 +191,14 @@
 				$category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post );
 
 				$category_object = get_term( $category_object, 'category' );
-				$category = $category_object->slug;
-				if ( $parent = $category_object->parent )
-					$category = get_category_parents($parent, false, '/', true) . $category;
+				$category        = $category_object->slug;
+				if ( $category_object->parent ) {
+					$category = get_category_parents( $category_object->parent, false, '/', true ) . $category;
+				}
 			}
 			// show default category in permalinks, without
 			// having to assign it explicitly
-			if ( empty($category) ) {
+			if ( empty( $category ) ) {
 				$default_category = get_term( get_option( 'default_category' ), 'category' );
 				if ( $default_category && ! is_wp_error( $default_category ) ) {
 					$category = $default_category->slug;
@@ -200,12 +207,12 @@
 		}
 
 		$author = '';
-		if ( strpos($permalink, '%author%') !== false ) {
-			$authordata = get_userdata($post->post_author);
-			$author = $authordata->user_nicename;
+		if ( strpos( $permalink, '%author%' ) !== false ) {
+			$authordata = get_userdata( $post->post_author );
+			$author     = $authordata->user_nicename;
 		}
 
-		$date = explode(" ",date('Y m d H i s', $unixtime));
+		$date           = explode( ' ', date( 'Y m d H i s', $unixtime ) );
 		$rewritereplace =
 		array(
 			$date[0],
@@ -220,10 +227,10 @@
 			$author,
 			$post->post_name,
 		);
-		$permalink = home_url( str_replace($rewritecode, $rewritereplace, $permalink) );
-		$permalink = user_trailingslashit($permalink, 'single');
+		$permalink      = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) );
+		$permalink      = user_trailingslashit( $permalink, 'single' );
 	} else { // if they're not using the fancy permalink option
-		$permalink = home_url('?p=' . $post->ID);
+		$permalink = home_url( '?p=' . $post->ID );
 	}
 
 	/**
@@ -255,34 +262,42 @@
 function get_post_permalink( $id = 0, $leavename = false, $sample = false ) {
 	global $wp_rewrite;
 
-	$post = get_post($id);
-
-	if ( is_wp_error( $post ) )
+	$post = get_post( $id );
+
+	if ( is_wp_error( $post ) ) {
 		return $post;
-
-	$post_link = $wp_rewrite->get_extra_permastruct($post->post_type);
+	}
+
+	$post_link = $wp_rewrite->get_extra_permastruct( $post->post_type );
 
 	$slug = $post->post_name;
 
 	$draft_or_pending = get_post_status( $post ) && in_array( get_post_status( $post ), array( 'draft', 'pending', 'auto-draft', 'future' ) );
 
-	$post_type = get_post_type_object($post->post_type);
+	$post_type = get_post_type_object( $post->post_type );
 
 	if ( $post_type->hierarchical ) {
 		$slug = get_page_uri( $post );
 	}
 
-	if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) {
+	if ( ! empty( $post_link ) && ( ! $draft_or_pending || $sample ) ) {
 		if ( ! $leavename ) {
-			$post_link = str_replace("%$post->post_type%", $slug, $post_link);
+			$post_link = str_replace( "%$post->post_type%", $slug, $post_link );
 		}
-		$post_link = home_url( user_trailingslashit($post_link) );
+		$post_link = home_url( user_trailingslashit( $post_link ) );
 	} else {
-		if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) )
-			$post_link = add_query_arg($post_type->query_var, $slug, '');
-		else
-			$post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), '');
-		$post_link = home_url($post_link);
+		if ( $post_type->query_var && ( isset( $post->post_status ) && ! $draft_or_pending ) ) {
+			$post_link = add_query_arg( $post_type->query_var, $slug, '' );
+		} else {
+			$post_link = add_query_arg(
+				array(
+					'post_type' => $post->post_type,
+					'p'         => $post->ID,
+				),
+				''
+			);
+		}
+		$post_link = home_url( $post_link );
 	}
 
 	/**
@@ -314,10 +329,11 @@
 function get_page_link( $post = false, $leavename = false, $sample = false ) {
 	$post = get_post( $post );
 
-	if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) )
-		$link = home_url('/');
-	else
+	if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) ) {
+		$link = home_url( '/' );
+	} else {
 		$link = _get_page_link( $post, $leavename, $sample );
+	}
 
 	/**
 	 * Filters the permalink for a page.
@@ -356,13 +372,13 @@
 
 	$link = $wp_rewrite->get_page_permastruct();
 
-	if ( !empty($link) && ( ( isset($post->post_status) && !$draft_or_pending ) || $sample ) ) {
+	if ( ! empty( $link ) && ( ( isset( $post->post_status ) && ! $draft_or_pending ) || $sample ) ) {
 		if ( ! $leavename ) {
-			$link = str_replace('%pagename%', get_page_uri( $post ), $link);
+			$link = str_replace( '%pagename%', get_page_uri( $post ), $link );
 		}
 
-		$link = home_url($link);
-		$link = user_trailingslashit($link, 'page');
+		$link = home_url( $link );
+		$link = user_trailingslashit( $link, 'page' );
 	} else {
 		$link = home_url( '?page_id=' . $post->ID );
 	}
@@ -396,34 +412,39 @@
 
 	$link = false;
 
-	$post = get_post( $post );
+	$post   = get_post( $post );
 	$parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false;
 	if ( $parent && ! in_array( $parent->post_type, get_post_types() ) ) {
 		$parent = false;
 	}
 
 	if ( $wp_rewrite->using_permalinks() && $parent ) {
-		if ( 'page' == $parent->post_type )
+		if ( 'page' == $parent->post_type ) {
 			$parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front
-		else
+		} else {
 			$parentlink = get_permalink( $post->post_parent );
-
-		if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )
+		}
+
+		if ( is_numeric( $post->post_name ) || false !== strpos( get_option( 'permalink_structure' ), '%category%' ) ) {
 			$name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker
-		else
+		} else {
 			$name = $post->post_name;
-
-		if ( strpos($parentlink, '?') === false )
-			$link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' );
-
-		if ( ! $leavename )
+		}
+
+		if ( strpos( $parentlink, '?' ) === false ) {
+			$link = user_trailingslashit( trailingslashit( $parentlink ) . '%postname%' );
+		}
+
+		if ( ! $leavename ) {
 			$link = str_replace( '%postname%', $name, $link );
+		}
 	} elseif ( $wp_rewrite->using_permalinks() && ! $leavename ) {
 		$link = home_url( user_trailingslashit( $post->post_name ) );
 	}
 
-	if ( ! $link )
+	if ( ! $link ) {
 		$link = home_url( '/?attachment_id=' . $post->ID );
+	}
 
 	/**
 	 * Filters the permalink for an attachment.
@@ -448,11 +469,12 @@
  */
 function get_year_link( $year ) {
 	global $wp_rewrite;
-	if ( !$year )
-		$year = gmdate('Y', current_time('timestamp'));
+	if ( ! $year ) {
+		$year = current_time( 'Y' );
+	}
 	$yearlink = $wp_rewrite->get_year_permastruct();
-	if ( !empty($yearlink) ) {
-		$yearlink = str_replace('%year%', $year, $yearlink);
+	if ( ! empty( $yearlink ) ) {
+		$yearlink = str_replace( '%year%', $year, $yearlink );
 		$yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) );
 	} else {
 		$yearlink = home_url( '?m=' . $year );
@@ -480,16 +502,18 @@
  * @param bool|int $month False for current month. Integer of month.
  * @return string The permalink for the specified month and year archive.
  */
-function get_month_link($year, $month) {
+function get_month_link( $year, $month ) {
 	global $wp_rewrite;
-	if ( !$year )
-		$year = gmdate('Y', current_time('timestamp'));
-	if ( !$month )
-		$month = gmdate('m', current_time('timestamp'));
+	if ( ! $year ) {
+		$year = current_time( 'Y' );
+	}
+	if ( ! $month ) {
+		$month = current_time( 'm' );
+	}
 	$monthlink = $wp_rewrite->get_month_permastruct();
-	if ( !empty($monthlink) ) {
-		$monthlink = str_replace('%year%', $year, $monthlink);
-		$monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);
+	if ( ! empty( $monthlink ) ) {
+		$monthlink = str_replace( '%year%', $year, $monthlink );
+		$monthlink = str_replace( '%monthnum%', zeroise( intval( $month ), 2 ), $monthlink );
 		$monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) );
 	} else {
 		$monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) );
@@ -519,20 +543,23 @@
  * @param bool|int $day   False for current day. Integer of day.
  * @return string The permalink for the specified day, month, and year archive.
  */
-function get_day_link($year, $month, $day) {
+function get_day_link( $year, $month, $day ) {
 	global $wp_rewrite;
-	if ( !$year )
-		$year = gmdate('Y', current_time('timestamp'));
-	if ( !$month )
-		$month = gmdate('m', current_time('timestamp'));
-	if ( !$day )
-		$day = gmdate('j', current_time('timestamp'));
+	if ( ! $year ) {
+		$year = current_time( 'Y' );
+	}
+	if ( ! $month ) {
+		$month = current_time( 'm' );
+	}
+	if ( ! $day ) {
+		$day = current_time( 'j' );
+	}
 
 	$daylink = $wp_rewrite->get_day_permastruct();
-	if ( !empty($daylink) ) {
-		$daylink = str_replace('%year%', $year, $daylink);
-		$daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink);
-		$daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink);
+	if ( ! empty( $daylink ) ) {
+		$daylink = str_replace( '%year%', $year, $daylink );
+		$daylink = str_replace( '%monthnum%', zeroise( intval( $month ), 2 ), $daylink );
+		$daylink = str_replace( '%day%', zeroise( intval( $day ), 2 ), $daylink );
 		$daylink = home_url( user_trailingslashit( $daylink, 'day' ) );
 	} else {
 		$daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) );
@@ -589,25 +616,28 @@
 
 	$permalink = $wp_rewrite->get_feed_permastruct();
 	if ( '' != $permalink ) {
-		if ( false !== strpos($feed, 'comments_') ) {
-			$feed = str_replace('comments_', '', $feed);
+		if ( false !== strpos( $feed, 'comments_' ) ) {
+			$feed      = str_replace( 'comments_', '', $feed );
 			$permalink = $wp_rewrite->get_comment_feed_permastruct();
 		}
 
-		if ( get_default_feed() == $feed )
+		if ( get_default_feed() == $feed ) {
 			$feed = '';
-
-		$permalink = str_replace('%feed%', $feed, $permalink);
-		$permalink = preg_replace('#/+#', '/', "/$permalink");
-		$output =  home_url( user_trailingslashit($permalink, 'feed') );
+		}
+
+		$permalink = str_replace( '%feed%', $feed, $permalink );
+		$permalink = preg_replace( '#/+#', '/', "/$permalink" );
+		$output    = home_url( user_trailingslashit( $permalink, 'feed' ) );
 	} else {
-		if ( empty($feed) )
+		if ( empty( $feed ) ) {
 			$feed = get_default_feed();
-
-		if ( false !== strpos($feed, 'comments_') )
-			$feed = str_replace('comments_', 'comments-', $feed);
-
-		$output = home_url("?feed={$feed}");
+		}
+
+		if ( false !== strpos( $feed, 'comments_' ) ) {
+			$feed = str_replace( 'comments_', 'comments-', $feed );
+		}
+
+		$output = home_url( "?feed={$feed}" );
 	}
 
 	/**
@@ -633,40 +663,62 @@
 function get_post_comments_feed_link( $post_id = 0, $feed = '' ) {
 	$post_id = absint( $post_id );
 
-	if ( ! $post_id )
+	if ( ! $post_id ) {
 		$post_id = get_the_ID();
-
-	if ( empty( $feed ) )
+	}
+
+	if ( empty( $feed ) ) {
 		$feed = get_default_feed();
-
-	$post = get_post( $post_id );
+	}
+
+	$post       = get_post( $post_id );
 	$unattached = 'attachment' === $post->post_type && 0 === (int) $post->post_parent;
 
-	if ( '' != get_option('permalink_structure') ) {
-		if ( 'page' == get_option('show_on_front') && $post_id == get_option('page_on_front') )
+	if ( '' != get_option( 'permalink_structure' ) ) {
+		if ( 'page' == get_option( 'show_on_front' ) && $post_id == get_option( 'page_on_front' ) ) {
 			$url = _get_page_link( $post_id );
-		else
-			$url = get_permalink($post_id);
+		} else {
+			$url = get_permalink( $post_id );
+		}
 
 		if ( $unattached ) {
-			$url =  home_url( '/feed/' );
+			$url = home_url( '/feed/' );
 			if ( $feed !== get_default_feed() ) {
 				$url .= "$feed/";
 			}
 			$url = add_query_arg( 'attachment_id', $post_id, $url );
 		} else {
-			$url = trailingslashit($url) . 'feed';
-			if ( $feed != get_default_feed() )
+			$url = trailingslashit( $url ) . 'feed';
+			if ( $feed != get_default_feed() ) {
 				$url .= "/$feed";
-			$url = user_trailingslashit($url, 'single_feed');
+			}
+			$url = user_trailingslashit( $url, 'single_feed' );
 		}
 	} else {
 		if ( $unattached ) {
-			$url = add_query_arg( array( 'feed' => $feed, 'attachment_id' => $post_id ), home_url( '/' ) );
+			$url = add_query_arg(
+				array(
+					'feed'          => $feed,
+					'attachment_id' => $post_id,
+				),
+				home_url( '/' )
+			);
 		} elseif ( 'page' == $post->post_type ) {
-			$url = add_query_arg( array( 'feed' => $feed, 'page_id' => $post_id ), home_url( '/' ) );
+			$url = add_query_arg(
+				array(
+					'feed'    => $feed,
+					'page_id' => $post_id,
+				),
+				home_url( '/' )
+			);
 		} else {
-			$url = add_query_arg( array( 'feed' => $feed, 'p' => $post_id ), home_url( '/' ) );
+			$url = add_query_arg(
+				array(
+					'feed' => $feed,
+					'p'    => $post_id,
+				),
+				home_url( '/' )
+			);
 		}
 	}
 
@@ -696,7 +748,7 @@
 function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) {
 	$url = get_post_comments_feed_link( $post_id, $feed );
 	if ( empty( $link_text ) ) {
-		$link_text = __('Comments Feed');
+		$link_text = __( 'Comments Feed' );
 	}
 
 	$link = '<a href="' . esc_url( $url ) . '">' . $link_text . '</a>';
@@ -725,22 +777,24 @@
  * @return string Link to the feed for the author specified by $author_id.
  */
 function get_author_feed_link( $author_id, $feed = '' ) {
-	$author_id = (int) $author_id;
-	$permalink_structure = get_option('permalink_structure');
-
-	if ( empty($feed) )
+	$author_id           = (int) $author_id;
+	$permalink_structure = get_option( 'permalink_structure' );
+
+	if ( empty( $feed ) ) {
 		$feed = get_default_feed();
+	}
 
 	if ( '' == $permalink_structure ) {
-		$link = home_url("?feed=$feed&amp;author=" . $author_id);
+		$link = home_url( "?feed=$feed&amp;author=" . $author_id );
 	} else {
-		$link = get_author_posts_url($author_id);
-		if ( $feed == get_default_feed() )
+		$link = get_author_posts_url( $author_id );
+		if ( $feed == get_default_feed() ) {
 			$feed_link = 'feed';
-		else
+		} else {
 			$feed_link = "feed/$feed";
-
-		$link = trailingslashit($link) . user_trailingslashit($feed_link, 'feed');
+		}
+
+		$link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
 	}
 
 	/**
@@ -786,34 +840,36 @@
  * @return string|false Link to the feed for the term specified by $term_id and $taxonomy.
  */
 function get_term_feed_link( $term_id, $taxonomy = 'category', $feed = '' ) {
-	$term_id = ( int ) $term_id;
-
-	$term = get_term( $term_id, $taxonomy  );
-
-	if ( empty( $term ) || is_wp_error( $term ) )
+	$term_id = (int) $term_id;
+
+	$term = get_term( $term_id, $taxonomy );
+
+	if ( empty( $term ) || is_wp_error( $term ) ) {
 		return false;
-
-	if ( empty( $feed ) )
+	}
+
+	if ( empty( $feed ) ) {
 		$feed = get_default_feed();
+	}
 
 	$permalink_structure = get_option( 'permalink_structure' );
 
 	if ( '' == $permalink_structure ) {
 		if ( 'category' == $taxonomy ) {
-			$link = home_url("?feed=$feed&amp;cat=$term_id");
-		}
-		elseif ( 'post_tag' == $taxonomy ) {
-			$link = home_url("?feed=$feed&amp;tag=$term->slug");
+			$link = home_url( "?feed=$feed&amp;cat=$term_id" );
+		} elseif ( 'post_tag' == $taxonomy ) {
+			$link = home_url( "?feed=$feed&amp;tag=$term->slug" );
 		} else {
-			$t = get_taxonomy( $taxonomy );
-			$link = home_url("?feed=$feed&amp;$t->query_var=$term->slug");
+			$t    = get_taxonomy( $taxonomy );
+			$link = home_url( "?feed=$feed&amp;$t->query_var=$term->slug" );
 		}
 	} else {
 		$link = get_term_link( $term_id, $term->taxonomy );
-		if ( $feed == get_default_feed() )
+		if ( $feed == get_default_feed() ) {
 			$feed_link = 'feed';
-		else
+		} else {
 			$feed_link = "feed/$feed";
+		}
 
 		$link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
 	}
@@ -979,19 +1035,22 @@
  * @return string|void HTML content.
  */
 function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) {
-	if ( is_null( $term ) )
+	if ( is_null( $term ) ) {
 		$term = get_queried_object();
-
-	if ( ! $term )
+	}
+
+	if ( ! $term ) {
 		return;
+	}
 
 	$tax = get_taxonomy( $term->taxonomy );
 	if ( ! current_user_can( 'edit_term', $term->term_id ) ) {
 		return;
 	}
 
-	if ( empty( $link ) )
-		$link = __('Edit This');
+	if ( empty( $link ) ) {
+		$link = __( 'Edit This' );
+	}
 
 	$link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>';
 
@@ -1005,10 +1064,11 @@
 	 */
 	$link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;
 
-	if ( $echo )
+	if ( $echo ) {
 		echo $link;
-	else
+	} else {
 		return $link;
+	}
 }
 
 /**
@@ -1024,20 +1084,21 @@
 function get_search_link( $query = '' ) {
 	global $wp_rewrite;
 
-	if ( empty($query) )
+	if ( empty( $query ) ) {
 		$search = get_search_query( false );
-	else
-		$search = stripslashes($query);
+	} else {
+		$search = stripslashes( $query );
+	}
 
 	$permastruct = $wp_rewrite->get_search_permastruct();
 
 	if ( empty( $permastruct ) ) {
-		$link = home_url('?s=' . urlencode($search) );
+		$link = home_url( '?s=' . urlencode( $search ) );
 	} else {
-		$search = urlencode($search);
-		$search = str_replace('%2F', '/', $search); // %2F(/) is not valid within a URL, send it un-encoded.
-		$link = str_replace( '%search%', $search, $permastruct );
-		$link = home_url( user_trailingslashit( $link, 'search' ) );
+		$search = urlencode( $search );
+		$search = str_replace( '%2F', '/', $search ); // %2F(/) is not valid within a URL, send it un-encoded.
+		$link   = str_replace( '%search%', $search, $permastruct );
+		$link   = home_url( user_trailingslashit( $link, 'search' ) );
 	}
 
 	/**
@@ -1062,19 +1123,20 @@
  * @param string $feed         Optional. Feed type. Default empty.
  * @return string The search results feed permalink.
  */
-function get_search_feed_link($search_query = '', $feed = '') {
+function get_search_feed_link( $search_query = '', $feed = '' ) {
 	global $wp_rewrite;
-	$link = get_search_link($search_query);
-
-	if ( empty($feed) )
+	$link = get_search_link( $search_query );
+
+	if ( empty( $feed ) ) {
 		$feed = get_default_feed();
+	}
 
 	$permastruct = $wp_rewrite->get_search_permastruct();
 
-	if ( empty($permastruct) ) {
-		$link = add_query_arg('feed', $feed, $link);
+	if ( empty( $permastruct ) ) {
+		$link = add_query_arg( 'feed', $feed, $link );
 	} else {
-		$link = trailingslashit($link);
+		$link  = trailingslashit( $link );
 		$link .= "feed/$feed/";
 	}
 
@@ -1101,20 +1163,22 @@
  * @param string $feed         Optional. Feed type. Default empty.
  * @return string The comments feed search results permalink.
  */
-function get_search_comments_feed_link($search_query = '', $feed = '') {
+function get_search_comments_feed_link( $search_query = '', $feed = '' ) {
 	global $wp_rewrite;
 
-	if ( empty($feed) )
+	if ( empty( $feed ) ) {
 		$feed = get_default_feed();
-
-	$link = get_search_feed_link($search_query, $feed);
+	}
+
+	$link = get_search_feed_link( $search_query, $feed );
 
 	$permastruct = $wp_rewrite->get_search_permastruct();
 
-	if ( empty($permastruct) )
-		$link = add_query_arg('feed', 'comments-' . $feed, $link);
-	else
-		$link = add_query_arg('withcomments', 1, $link);
+	if ( empty( $permastruct ) ) {
+		$link = add_query_arg( 'feed', 'comments-' . $feed, $link );
+	} else {
+		$link = add_query_arg( 'withcomments', 1, $link );
+	}
 
 	/** This filter is documented in wp-includes/link-template.php */
 	return apply_filters( 'search_feed_link', $link, $feed, 'comments' );
@@ -1133,12 +1197,13 @@
  */
 function get_post_type_archive_link( $post_type ) {
 	global $wp_rewrite;
-	if ( ! $post_type_obj = get_post_type_object( $post_type ) )
+	if ( ! $post_type_obj = get_post_type_object( $post_type ) ) {
 		return false;
+	}
 
 	if ( 'post' === $post_type ) {
-		$show_on_front = get_option( 'show_on_front' );
-		$page_for_posts  = get_option( 'page_for_posts' );
+		$show_on_front  = get_option( 'show_on_front' );
+		$page_for_posts = get_option( 'page_for_posts' );
 
 		if ( 'page' == $show_on_front && $page_for_posts ) {
 			$link = get_permalink( $page_for_posts );
@@ -1149,15 +1214,17 @@
 		return apply_filters( 'post_type_archive_link', $link, $post_type );
 	}
 
-	if ( ! $post_type_obj->has_archive )
+	if ( ! $post_type_obj->has_archive ) {
 		return false;
+	}
 
 	if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
 		$struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
-		if ( $post_type_obj->rewrite['with_front'] )
+		if ( $post_type_obj->rewrite['with_front'] ) {
 			$struct = $wp_rewrite->front . $struct;
-		else
+		} else {
 			$struct = $wp_rewrite->root . $struct;
+		}
 		$link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
 	} else {
 		$link = home_url( '?post_type=' . $post_type );
@@ -1185,18 +1252,21 @@
  */
 function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
 	$default_feed = get_default_feed();
-	if ( empty( $feed ) )
+	if ( empty( $feed ) ) {
 		$feed = $default_feed;
-
-	if ( ! $link = get_post_type_archive_link( $post_type ) )
+	}
+
+	if ( ! $link = get_post_type_archive_link( $post_type ) ) {
 		return false;
+	}
 
 	$post_type_obj = get_post_type_object( $post_type );
 	if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
-		$link = trailingslashit( $link );
+		$link  = trailingslashit( $link );
 		$link .= 'feed/';
-		if ( $feed != $default_feed )
+		if ( $feed != $default_feed ) {
 			$link .= "$feed/";
+		}
 	} else {
 		$link = add_query_arg( 'feed', $feed, $link );
 	}
@@ -1239,7 +1309,7 @@
 		}
 
 		$query_args['preview'] = 'true';
-		$preview_link = add_query_arg( $query_args, $preview_link );
+		$preview_link          = add_query_arg( $query_args, $preview_link );
 	}
 
 	/**
@@ -1268,22 +1338,26 @@
  *                     not allow an editing UI.
  */
 function get_edit_post_link( $id = 0, $context = 'display' ) {
-	if ( ! $post = get_post( $id ) )
+	if ( ! $post = get_post( $id ) ) {
 		return;
-
-	if ( 'revision' === $post->post_type )
+	}
+
+	if ( 'revision' === $post->post_type ) {
 		$action = '';
-	elseif ( 'display' == $context )
+	} elseif ( 'display' == $context ) {
 		$action = '&amp;action=edit';
-	else
+	} else {
 		$action = '&action=edit';
+	}
 
 	$post_type_object = get_post_type_object( $post->post_type );
-	if ( !$post_type_object )
+	if ( ! $post_type_object ) {
 		return;
-
-	if ( !current_user_can( 'edit_post', $post->ID ) )
+	}
+
+	if ( ! current_user_can( 'edit_post', $post->ID ) ) {
 		return;
+	}
 
 	if ( $post_type_object->_edit_link ) {
 		$link = admin_url( sprintf( $post_type_object->_edit_link . $action, $post->ID ) );
@@ -1356,20 +1430,24 @@
  * @return string|void The delete post link URL for the given post.
  */
 function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) {
-	if ( ! empty( $deprecated ) )
+	if ( ! empty( $deprecated ) ) {
 		_deprecated_argument( __FUNCTION__, '3.0.0' );
-
-	if ( !$post = get_post( $id ) )
+	}
+
+	if ( ! $post = get_post( $id ) ) {
 		return;
+	}
 
 	$post_type_object = get_post_type_object( $post->post_type );
-	if ( !$post_type_object )
+	if ( ! $post_type_object ) {
 		return;
-
-	if ( !current_user_can( 'delete_post', $post->ID ) )
+	}
+
+	if ( ! current_user_can( 'delete_post', $post->ID ) ) {
 		return;
-
-	$action = ( $force_delete || !EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
+	}
+
+	$action = ( $force_delete || ! EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
 
 	$delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );
 
@@ -1396,10 +1474,11 @@
 function get_edit_comment_link( $comment_id = 0 ) {
 	$comment = get_comment( $comment_id );
 
-	if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
+	if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) {
 		return;
-
-	$location = admin_url('comment.php?action=editcomment&amp;c=') . $comment->comment_ID;
+	}
+
+	$location = admin_url( 'comment.php?action=editcomment&amp;c=' ) . $comment->comment_ID;
 
 	/**
 	 * Filters the comment edit link.
@@ -1456,10 +1535,11 @@
 function get_edit_bookmark_link( $link = 0 ) {
 	$link = get_bookmark( $link );
 
-	if ( !current_user_can('manage_links') )
+	if ( ! current_user_can( 'manage_links' ) ) {
 		return;
-
-	$location = admin_url('link.php?action=edit&amp;link_id=') . $link->link_id;
+	}
+
+	$location = admin_url( 'link.php?action=edit&amp;link_id=' ) . $link->link_id;
 
 	/**
 	 * Filters the bookmark edit link.
@@ -1483,13 +1563,15 @@
  * @param int    $bookmark Optional. Bookmark ID. Default is the current bookmark.
  */
 function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
-	$bookmark = get_bookmark($bookmark);
-
-	if ( !current_user_can('manage_links') )
+	$bookmark = get_bookmark( $bookmark );
+
+	if ( ! current_user_can( 'manage_links' ) ) {
 		return;
-
-	if ( empty($link) )
-		$link = __('Edit This');
+	}
+
+	if ( empty( $link ) ) {
+		$link = __( 'Edit This' );
+	}
 
 	$link = '<a href="' . esc_url( get_edit_bookmark_link( $bookmark ) ) . '">' . $link . '</a>';
 
@@ -1513,21 +1595,25 @@
  * @return string URL to edit user page or empty string.
  */
 function get_edit_user_link( $user_id = null ) {
-	if ( ! $user_id )
+	if ( ! $user_id ) {
 		$user_id = get_current_user_id();
-
-	if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) )
+	}
+
+	if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) ) {
 		return '';
+	}
 
 	$user = get_userdata( $user_id );
 
-	if ( ! $user )
+	if ( ! $user ) {
 		return '';
-
-	if ( get_current_user_id() == $user->ID )
+	}
+
+	if ( get_current_user_id() == $user->ID ) {
 		$link = get_edit_profile_url( $user->ID );
-	else
+	} else {
 		$link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
+	}
 
 	/**
 	 * Filters the user edit link.
@@ -1591,58 +1677,61 @@
 function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
 	global $wpdb;
 
-	if ( ( ! $post = get_post() ) || ! taxonomy_exists( $taxonomy ) )
+	if ( ( ! $post = get_post() ) || ! taxonomy_exists( $taxonomy ) ) {
 		return null;
+	}
 
 	$current_post_date = $post->post_date;
 
-	$join = '';
-	$where = '';
+	$join     = '';
+	$where    = '';
 	$adjacent = $previous ? 'previous' : 'next';
 
+	if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) {
+		// Back-compat, $excluded_terms used to be $excluded_categories with IDs separated by " and ".
+		if ( false !== strpos( $excluded_terms, ' and ' ) ) {
+			_deprecated_argument( __FUNCTION__, '3.3.0', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) );
+			$excluded_terms = explode( ' and ', $excluded_terms );
+		} else {
+			$excluded_terms = explode( ',', $excluded_terms );
+		}
+
+		$excluded_terms = array_map( 'intval', $excluded_terms );
+	}
+
+	/**
+	 * Filters the IDs of terms excluded from adjacent post queries.
+	 *
+	 * The dynamic portion of the hook name, `$adjacent`, refers to the type
+	 * of adjacency, 'next' or 'previous'.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array $excluded_terms Array of excluded term IDs.
+	 */
+	$excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms );
+
 	if ( $in_same_term || ! empty( $excluded_terms ) ) {
-		if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) {
-			// back-compat, $excluded_terms used to be $excluded_terms with IDs separated by " and "
-			if ( false !== strpos( $excluded_terms, ' and ' ) ) {
-				_deprecated_argument( __FUNCTION__, '3.3.0', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) );
-				$excluded_terms = explode( ' and ', $excluded_terms );
-			} else {
-				$excluded_terms = explode( ',', $excluded_terms );
+		if ( $in_same_term ) {
+			$join  .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
+			$where .= $wpdb->prepare( 'AND tt.taxonomy = %s', $taxonomy );
+
+			if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) {
+				return '';
 			}
-
-			$excluded_terms = array_map( 'intval', $excluded_terms );
-		}
-
-		if ( $in_same_term ) {
-			$join .= " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
-			$where .= $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy );
-
-			if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) )
-				return '';
 			$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
 
 			// Remove any exclusions from the term array to include.
 			$term_array = array_diff( $term_array, (array) $excluded_terms );
 			$term_array = array_map( 'intval', $term_array );
 
-			if ( ! $term_array || is_wp_error( $term_array ) )
+			if ( ! $term_array || is_wp_error( $term_array ) ) {
 				return '';
-
-			$where .= " AND tt.term_id IN (" . implode( ',', $term_array ) . ")";
+			}
+
+			$where .= ' AND tt.term_id IN (' . implode( ',', $term_array ) . ')';
 		}
 
-		/**
-		 * Filters the IDs of terms excluded from adjacent post queries.
-		 *
-		 * The dynamic portion of the hook name, `$adjacent`, refers to the type
-		 * of adjacency, 'next' or 'previous'.
-		 *
-		 * @since 4.4.0
-		 *
-		 * @param string $excluded_terms Array of excluded term IDs.
-		 */
-		$excluded_terms = apply_filters( "get_{$adjacent}_post_excluded_terms", $excluded_terms );
-
 		if ( ! empty( $excluded_terms ) ) {
 			$where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( ',', array_map( 'intval', $excluded_terms ) ) . ') )';
 		}
@@ -1665,20 +1754,20 @@
 		 * current user has the 'read_private_posts' cap.
 		 */
 		$private_states = get_post_stati( array( 'private' => true ) );
-		$where .= " AND ( p.post_status = 'publish'";
+		$where         .= " AND ( p.post_status = 'publish'";
 		foreach ( (array) $private_states as $state ) {
 			if ( current_user_can( $read_private_cap ) ) {
-				$where .= $wpdb->prepare( " OR p.post_status = %s", $state );
+				$where .= $wpdb->prepare( ' OR p.post_status = %s', $state );
 			} else {
-				$where .= $wpdb->prepare( " OR (p.post_author = %d AND p.post_status = %s)", $user_id, $state );
+				$where .= $wpdb->prepare( ' OR (p.post_author = %d AND p.post_status = %s)', $user_id, $state );
 			}
 		}
-		$where .= " )";
+		$where .= ' )';
 	} else {
 		$where .= " AND p.post_status = 'publish'";
 	}
 
-	$op = $previous ? '<' : '>';
+	$op    = $previous ? '<' : '>';
 	$order = $previous ? 'DESC' : 'ASC';
 
 	/**
@@ -1729,25 +1818,28 @@
 	 * @param WP_Post $post    WP_Post object.
 	 * @param string  $order   Sort order. 'DESC' for previous post, 'ASC' for next.
 	 */
-	$sort  = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post, $order );
-
-	$query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
+	$sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1", $post, $order );
+
+	$query     = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
 	$query_key = 'adjacent_post_' . md5( $query );
-	$result = wp_cache_get( $query_key, 'counts' );
+	$result    = wp_cache_get( $query_key, 'counts' );
 	if ( false !== $result ) {
-		if ( $result )
+		if ( $result ) {
 			$result = get_post( $result );
+		}
 		return $result;
 	}
 
 	$result = $wpdb->get_var( $query );
-	if ( null === $result )
+	if ( null === $result ) {
 		$result = '';
+	}
 
 	wp_cache_set( $query_key, $result, 'counts' );
 
-	if ( $result )
+	if ( $result ) {
 		$result = get_post( $result );
+	}
 
 	return $result;
 }
@@ -1767,25 +1859,33 @@
  * @return string|void The adjacent post relational link URL.
  */
 function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
-	if ( $previous && is_attachment() && $post = get_post() )
+	if ( $previous && is_attachment() && $post = get_post() ) {
 		$post = get_post( $post->post_parent );
-	else
+	} else {
 		$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
-
-	if ( empty( $post ) )
+	}
+
+	if ( empty( $post ) ) {
 		return;
-
-	$post_title = the_title_attribute( array( 'echo' => false, 'post' => $post ) );
-
-	if ( empty( $post_title ) )
+	}
+
+	$post_title = the_title_attribute(
+		array(
+			'echo' => false,
+			'post' => $post,
+		)
+	);
+
+	if ( empty( $post_title ) ) {
 		$post_title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
+	}
 
 	$date = mysql2date( get_option( 'date_format' ), $post->post_date );
 
 	$title = str_replace( '%title', $post_title, $title );
 	$title = str_replace( '%date', $date, $title );
 
-	$link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
+	$link  = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
 	$link .= esc_attr( $title );
 	$link .= "' href='" . get_permalink( $post ) . "' />\n";
 
@@ -1886,43 +1986,49 @@
  */
 function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) {
 	$post = get_post();
-	if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) )
+	if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) {
 		return null;
+	}
 
 	$query_args = array(
-		'posts_per_page' => 1,
-		'order' => $start ? 'ASC' : 'DESC',
+		'posts_per_page'         => 1,
+		'order'                  => $start ? 'ASC' : 'DESC',
 		'update_post_term_cache' => false,
-		'update_post_meta_cache' => false
+		'update_post_meta_cache' => false,
 	);
 
 	$term_array = array();
 
 	if ( ! is_array( $excluded_terms ) ) {
-		if ( ! empty( $excluded_terms ) )
+		if ( ! empty( $excluded_terms ) ) {
 			$excluded_terms = explode( ',', $excluded_terms );
-		else
+		} else {
 			$excluded_terms = array();
+		}
 	}
 
 	if ( $in_same_term || ! empty( $excluded_terms ) ) {
-		if ( $in_same_term )
+		if ( $in_same_term ) {
 			$term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) );
+		}
 
 		if ( ! empty( $excluded_terms ) ) {
 			$excluded_terms = array_map( 'intval', $excluded_terms );
 			$excluded_terms = array_diff( $excluded_terms, $term_array );
 
 			$inverse_terms = array();
-			foreach ( $excluded_terms as $excluded_term )
+			foreach ( $excluded_terms as $excluded_term ) {
 				$inverse_terms[] = $excluded_term * -1;
+			}
 			$excluded_terms = $inverse_terms;
 		}
 
-		$query_args[ 'tax_query' ] = array( array(
-			'taxonomy' => $taxonomy,
-			'terms' => array_merge( $term_array, $excluded_terms )
-		) );
+		$query_args['tax_query'] = array(
+			array(
+				'taxonomy' => $taxonomy,
+				'terms'    => array_merge( $term_array, $excluded_terms ),
+			),
+		);
 	}
 
 	return get_posts( $query_args );
@@ -1990,7 +2096,7 @@
  * @param string       $taxonomy       Optional. Taxonomy, if $in_same_term is true. Default 'category'.
  */
 function next_post_link( $format = '%link &raquo;', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) {
-	 echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
+	echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy );
 }
 
 /**
@@ -2009,26 +2115,28 @@
  * @return string The link URL of the previous or next post in relation to the current post.
  */
 function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) {
-	if ( $previous && is_attachment() )
+	if ( $previous && is_attachment() ) {
 		$post = get_post( get_post()->post_parent );
-	else
+	} else {
 		$post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy );
+	}
 
 	if ( ! $post ) {
 		$output = '';
 	} else {
 		$title = $post->post_title;
 
-		if ( empty( $post->post_title ) )
+		if ( empty( $post->post_title ) ) {
 			$title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
+		}
 
 		/** This filter is documented in wp-includes/post-template.php */
 		$title = apply_filters( 'the_title', $title, $post->ID );
 
 		$date = mysql2date( get_option( 'date_format' ), $post->post_date );
-		$rel = $previous ? 'prev' : 'next';
-
-		$string = '<a href="' . get_permalink( $post ) . '" rel="'.$rel.'">';
+		$rel  = $previous ? 'prev' : 'next';
+
+		$string = '<a href="' . get_permalink( $post ) . '" rel="' . $rel . '">';
 		$inlink = str_replace( '%title', $title, $link );
 		$inlink = str_replace( '%date', $date, $inlink );
 		$inlink = $string . $inlink . '</a>';
@@ -2081,26 +2189,26 @@
  *
  * @global WP_Rewrite $wp_rewrite
  *
- * @param int  $pagenum Optional. Page ID. Default 1.
+ * @param int  $pagenum Optional. Page number. Default 1.
  * @param bool $escape  Optional. Whether to escape the URL for display, with esc_url(). Defaults to true.
- * 	                    Otherwise, prepares the URL with esc_url_raw().
+ *                      Otherwise, prepares the URL with esc_url_raw().
  * @return string The link URL for the given page number.
  */
-function get_pagenum_link($pagenum = 1, $escape = true ) {
+function get_pagenum_link( $pagenum = 1, $escape = true ) {
 	global $wp_rewrite;
 
 	$pagenum = (int) $pagenum;
 
 	$request = remove_query_arg( 'paged' );
 
-	$home_root = parse_url(home_url());
-	$home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
+	$home_root = parse_url( home_url() );
+	$home_root = ( isset( $home_root['path'] ) ) ? $home_root['path'] : '';
 	$home_root = preg_quote( $home_root, '|' );
 
-	$request = preg_replace('|^'. $home_root . '|i', '', $request);
-	$request = preg_replace('|^/+|', '', $request);
-
-	if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
+	$request = preg_replace( '|^' . $home_root . '|i', '', $request );
+	$request = preg_replace( '|^/+|', '', $request );
+
+	if ( ! $wp_rewrite->using_permalinks() || is_admin() ) {
 		$base = trailingslashit( get_bloginfo( 'url' ) );
 
 		if ( $pagenum > 1 ) {
@@ -2112,24 +2220,25 @@
 		$qs_regex = '|\?.*?$|';
 		preg_match( $qs_regex, $request, $qs_match );
 
-		if ( !empty( $qs_match[0] ) ) {
+		if ( ! empty( $qs_match[0] ) ) {
 			$query_string = $qs_match[0];
-			$request = preg_replace( $qs_regex, '', $request );
+			$request      = preg_replace( $qs_regex, '', $request );
 		} else {
 			$query_string = '';
 		}
 
-		$request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request);
-		$request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request);
-		$request = ltrim($request, '/');
+		$request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request );
+		$request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request );
+		$request = ltrim( $request, '/' );
 
 		$base = trailingslashit( get_bloginfo( 'url' ) );
 
-		if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
+		if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) ) {
 			$base .= $wp_rewrite->index . '/';
+		}
 
 		if ( $pagenum > 1 ) {
-			$request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . "/" . $pagenum, 'paged' );
+			$request = ( ( ! empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . '/' . $pagenum, 'paged' );
 		}
 
 		$result = $base . $request . $query_string;
@@ -2139,15 +2248,18 @@
 	 * Filters the page number link for the current request.
 	 *
 	 * @since 2.5.0
+	 * @since 5.2.0 Added the `$pagenum` argument.
 	 *
-	 * @param string $result The page number link.
+	 * @param string $result  The page number link.
+	 * @param int    $pagenum The page number.
 	 */
-	$result = apply_filters( 'get_pagenum_link', $result );
-
-	if ( $escape )
+	$result = apply_filters( 'get_pagenum_link', $result, $pagenum );
+
+	if ( $escape ) {
 		return esc_url( $result );
-	else
+	} else {
 		return esc_url_raw( $result );
+	}
 }
 
 /**
@@ -2162,15 +2274,17 @@
  * @param int $max_page Optional. Max pages. Default 0.
  * @return string|void The link URL for next posts page.
  */
-function get_next_posts_page_link($max_page = 0) {
+function get_next_posts_page_link( $max_page = 0 ) {
 	global $paged;
 
-	if ( !is_single() ) {
-		if ( !$paged )
+	if ( ! is_single() ) {
+		if ( ! $paged ) {
 			$paged = 1;
-		$nextpage = intval($paged) + 1;
-		if ( !$max_page || $max_page >= $nextpage )
-			return get_pagenum_link($nextpage);
+		}
+		$nextpage = intval( $paged ) + 1;
+		if ( ! $max_page || $max_page >= $nextpage ) {
+			return get_pagenum_link( $nextpage );
+		}
 	}
 }
 
@@ -2186,10 +2300,11 @@
 function next_posts( $max_page = 0, $echo = true ) {
 	$output = esc_url( get_next_posts_page_link( $max_page ) );
 
-	if ( $echo )
+	if ( $echo ) {
 		echo $output;
-	else
+	} else {
 		return $output;
+	}
 }
 
 /**
@@ -2207,18 +2322,21 @@
 function get_next_posts_link( $label = null, $max_page = 0 ) {
 	global $paged, $wp_query;
 
-	if ( !$max_page )
+	if ( ! $max_page ) {
 		$max_page = $wp_query->max_num_pages;
-
-	if ( !$paged )
+	}
+
+	if ( ! $paged ) {
 		$paged = 1;
-
-	$nextpage = intval($paged) + 1;
-
-	if ( null === $label )
+	}
+
+	$nextpage = intval( $paged ) + 1;
+
+	if ( null === $label ) {
 		$label = __( 'Next Page &raquo;' );
-
-	if ( !is_single() && ( $nextpage <= $max_page ) ) {
+	}
+
+	if ( ! is_single() && ( $nextpage <= $max_page ) ) {
 		/**
 		 * Filters the anchor tag attributes for the next posts page link.
 		 *
@@ -2228,7 +2346,7 @@
 		 */
 		$attr = apply_filters( 'next_posts_link_attributes', '' );
 
-		return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) . '</a>';
+		return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
 	}
 }
 
@@ -2260,11 +2378,12 @@
 function get_previous_posts_page_link() {
 	global $paged;
 
-	if ( !is_single() ) {
-		$nextpage = intval($paged) - 1;
-		if ( $nextpage < 1 )
+	if ( ! is_single() ) {
+		$nextpage = intval( $paged ) - 1;
+		if ( $nextpage < 1 ) {
 			$nextpage = 1;
-		return get_pagenum_link($nextpage);
+		}
+		return get_pagenum_link( $nextpage );
 	}
 }
 
@@ -2279,10 +2398,11 @@
 function previous_posts( $echo = true ) {
 	$output = esc_url( get_previous_posts_page_link() );
 
-	if ( $echo )
+	if ( $echo ) {
 		echo $output;
-	else
+	} else {
 		return $output;
+	}
 }
 
 /**
@@ -2298,10 +2418,11 @@
 function get_previous_posts_link( $label = null ) {
 	global $paged;
 
-	if ( null === $label )
+	if ( null === $label ) {
 		$label = __( '&laquo; Previous Page' );
-
-	if ( !is_single() && $paged > 1 ) {
+	}
+
+	if ( ! is_single() && $paged > 1 ) {
 		/**
 		 * Filters the anchor tag attributes for the previous posts page link.
 		 *
@@ -2310,7 +2431,7 @@
 		 * @param string $attributes Attributes for the anchor tag.
 		 */
 		$attr = apply_filters( 'previous_posts_link_attributes', '' );
-		return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) .'</a>';
+		return '<a href="' . previous_posts( false ) . "\" $attr>" . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
 	}
 }
 
@@ -2348,26 +2469,26 @@
 
 	$return = '';
 
-	if ( !is_singular() ) {
+	if ( ! is_singular() ) {
 		$defaults = array(
-			'sep' => ' &#8212; ',
-			'prelabel' => __('&laquo; Previous Page'),
-			'nxtlabel' => __('Next Page &raquo;'),
+			'sep'      => ' &#8212; ',
+			'prelabel' => __( '&laquo; Previous Page' ),
+			'nxtlabel' => __( 'Next Page &raquo;' ),
 		);
-		$args = wp_parse_args( $args, $defaults );
+		$args     = wp_parse_args( $args, $defaults );
 
 		$max_num_pages = $wp_query->max_num_pages;
-		$paged = get_query_var('paged');
+		$paged         = get_query_var( 'paged' );
 
 		//only have sep if there's both prev and next results
-		if ($paged < 2 || $paged >= $max_num_pages) {
+		if ( $paged < 2 || $paged >= $max_num_pages ) {
 			$args['sep'] = '';
 		}
 
 		if ( $max_num_pages > 1 ) {
-			$return = get_previous_posts_link($args['prelabel']);
-			$return .= preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $args['sep']);
-			$return .= get_next_posts_link($args['nxtlabel']);
+			$return  = get_previous_posts_link( $args['prelabel'] );
+			$return .= preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $args['sep'] );
+			$return .= get_next_posts_link( $args['nxtlabel'] );
 		}
 	}
 	return $return;
@@ -2384,8 +2505,8 @@
  * @param string $nxtlabel Optional Label for next pages. Default empty.
  */
 function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
-	$args = array_filter( compact('sep', 'prelabel', 'nxtlabel') );
-	echo get_posts_nav_link($args);
+	$args = array_filter( compact( 'sep', 'prelabel', 'nxtlabel' ) );
+	echo get_posts_nav_link( $args );
 }
 
 /**
@@ -2407,14 +2528,17 @@
  * @return string Markup for post links.
  */
 function get_the_post_navigation( $args = array() ) {
-	$args = wp_parse_args( $args, array(
-		'prev_text'          => '%title',
-		'next_text'          => '%title',
-		'in_same_term'       => false,
-		'excluded_terms'     => '',
-		'taxonomy'           => 'category',
-		'screen_reader_text' => __( 'Post navigation' ),
-	) );
+	$args = wp_parse_args(
+		$args,
+		array(
+			'prev_text'          => '%title',
+			'next_text'          => '%title',
+			'in_same_term'       => false,
+			'excluded_terms'     => '',
+			'taxonomy'           => 'category',
+			'screen_reader_text' => __( 'Post navigation' ),
+		)
+	);
 
 	$navigation = '';
 
@@ -2478,11 +2602,14 @@
 
 	// Don't print empty markup if there's only one page.
 	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
-		$args = wp_parse_args( $args, array(
-			'prev_text'          => __( 'Older posts' ),
-			'next_text'          => __( 'Newer posts' ),
-			'screen_reader_text' => __( 'Posts navigation' ),
-		) );
+		$args = wp_parse_args(
+			$args,
+			array(
+				'prev_text'          => __( 'Older posts' ),
+				'next_text'          => __( 'Newer posts' ),
+				'screen_reader_text' => __( 'Posts navigation' ),
+			)
+		);
 
 		$next_link = get_previous_posts_link( $args['next_text'] );
 		$prev_link = get_next_posts_link( $args['prev_text'] );
@@ -2531,12 +2658,15 @@
 
 	// Don't print empty markup if there's only one page.
 	if ( $GLOBALS['wp_query']->max_num_pages > 1 ) {
-		$args = wp_parse_args( $args, array(
-			'mid_size'           => 1,
-			'prev_text'          => _x( 'Previous', 'previous set of posts' ),
-			'next_text'          => _x( 'Next', 'next set of posts' ),
-			'screen_reader_text' => __( 'Posts navigation' ),
-		) );
+		$args = wp_parse_args(
+			$args,
+			array(
+				'mid_size'           => 1,
+				'prev_text'          => _x( 'Previous', 'previous set of posts' ),
+				'next_text'          => _x( 'Next', 'next set of posts' ),
+				'screen_reader_text' => __( 'Posts navigation' ),
+			)
+		);
 
 		// Make sure we get a string back. Plain is the next best thing.
 		if ( isset( $args['type'] ) && 'array' == $args['type'] ) {
@@ -2629,18 +2759,20 @@
 
 	$result = get_permalink();
 
-	if ( 'newest' == get_option('default_comments_page') ) {
+	if ( 'newest' == get_option( 'default_comments_page' ) ) {
 		if ( $pagenum != $max_page ) {
-			if ( $wp_rewrite->using_permalinks() )
-				$result = user_trailingslashit( trailingslashit($result) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged');
-			else
+			if ( $wp_rewrite->using_permalinks() ) {
+				$result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' );
+			} else {
 				$result = add_query_arg( 'cpage', $pagenum, $result );
+			}
 		}
 	} elseif ( $pagenum > 1 ) {
-		if ( $wp_rewrite->using_permalinks() )
-			$result = user_trailingslashit( trailingslashit($result) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged');
-		else
+		if ( $wp_rewrite->using_permalinks() ) {
+			$result = user_trailingslashit( trailingslashit( $result ) . $wp_rewrite->comments_pagination_base . '-' . $pagenum, 'commentpaged' );
+		} else {
 			$result = add_query_arg( 'cpage', $pagenum, $result );
+		}
 	}
 
 	$result .= '#comments';
@@ -2669,28 +2801,33 @@
 function get_next_comments_link( $label = '', $max_page = 0 ) {
 	global $wp_query;
 
-	if ( ! is_singular() )
+	if ( ! is_singular() ) {
 		return;
-
-	$page = get_query_var('cpage');
+	}
+
+	$page = get_query_var( 'cpage' );
 
 	if ( ! $page ) {
 		$page = 1;
 	}
 
-	$nextpage = intval($page) + 1;
-
-	if ( empty($max_page) )
+	$nextpage = intval( $page ) + 1;
+
+	if ( empty( $max_page ) ) {
 		$max_page = $wp_query->max_num_comment_pages;
-
-	if ( empty($max_page) )
+	}
+
+	if ( empty( $max_page ) ) {
 		$max_page = get_comment_pages_count();
-
-	if ( $nextpage > $max_page )
+	}
+
+	if ( $nextpage > $max_page ) {
 		return;
-
-	if ( empty($label) )
-		$label = __('Newer Comments &raquo;');
+	}
+
+	if ( empty( $label ) ) {
+		$label = __( 'Newer Comments &raquo;' );
+	}
 
 	/**
 	 * Filters the anchor tag attributes for the next comments page link.
@@ -2699,7 +2836,7 @@
 	 *
 	 * @param string $attributes Attributes for the anchor tag.
 	 */
-	return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>'. preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) .'</a>';
+	return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
 }
 
 /**
@@ -2723,18 +2860,21 @@
  * @return string|void HTML-formatted link for the previous page of comments.
  */
 function get_previous_comments_link( $label = '' ) {
-	if ( ! is_singular() )
+	if ( ! is_singular() ) {
+		return;
+	}
+
+	$page = get_query_var( 'cpage' );
+
+	if ( intval( $page ) <= 1 ) {
 		return;
-
-	$page = get_query_var('cpage');
-
-	if ( intval($page) <= 1 )
-		return;
-
-	$prevpage = intval($page) - 1;
-
-	if ( empty($label) )
-		$label = __('&laquo; Older Comments');
+	}
+
+	$prevpage = intval( $page ) - 1;
+
+	if ( empty( $label ) ) {
+		$label = __( '&laquo; Older Comments' );
+	}
 
 	/**
 	 * Filters the anchor tag attributes for the previous comments page link.
@@ -2743,7 +2883,7 @@
 	 *
 	 * @param string $attributes Attributes for the anchor tag.
 	 */
-	return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) .'</a>';
+	return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) . '</a>';
 }
 
 /**
@@ -2766,36 +2906,41 @@
  * @global WP_Rewrite $wp_rewrite
  *
  * @param string|array $args Optional args. See paginate_links(). Default empty array.
- * @return string|void Markup for pagination links.
+ * @return string|array|void Markup for comment page links or array of comment page links.
  */
 function paginate_comments_links( $args = array() ) {
 	global $wp_rewrite;
 
-	if ( ! is_singular() )
+	if ( ! is_singular() ) {
 		return;
-
-	$page = get_query_var('cpage');
-	if ( !$page )
+	}
+
+	$page = get_query_var( 'cpage' );
+	if ( ! $page ) {
 		$page = 1;
+	}
 	$max_page = get_comment_pages_count();
 	$defaults = array(
-		'base' => add_query_arg( 'cpage', '%#%' ),
-		'format' => '',
-		'total' => $max_page,
-		'current' => $page,
-		'echo' => true,
-		'add_fragment' => '#comments'
+		'base'         => add_query_arg( 'cpage', '%#%' ),
+		'format'       => '',
+		'total'        => $max_page,
+		'current'      => $page,
+		'echo'         => true,
+		'type'         => 'plain',
+		'add_fragment' => '#comments',
 	);
-	if ( $wp_rewrite->using_permalinks() )
-		$defaults['base'] = user_trailingslashit(trailingslashit(get_permalink()) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged');
-
-	$args = wp_parse_args( $args, $defaults );
+	if ( $wp_rewrite->using_permalinks() ) {
+		$defaults['base'] = user_trailingslashit( trailingslashit( get_permalink() ) . $wp_rewrite->comments_pagination_base . '-%#%', 'commentpaged' );
+	}
+
+	$args       = wp_parse_args( $args, $defaults );
 	$page_links = paginate_links( $args );
 
-	if ( $args['echo'] )
+	if ( $args['echo'] && 'array' !== $args['type'] ) {
 		echo $page_links;
-	else
+	} else {
 		return $page_links;
+	}
 }
 
 /**
@@ -2819,11 +2964,14 @@
 
 	// Are there comments to navigate through?
 	if ( get_comment_pages_count() > 1 ) {
-		$args = wp_parse_args( $args, array(
-			'prev_text'          => __( 'Older comments' ),
-			'next_text'          => __( 'Newer comments' ),
-			'screen_reader_text' => __( 'Comments navigation' ),
-		) );
+		$args = wp_parse_args(
+			$args,
+			array(
+				'prev_text'          => __( 'Older comments' ),
+				'next_text'          => __( 'Newer comments' ),
+				'screen_reader_text' => __( 'Comments navigation' ),
+			)
+		);
 
 		$prev_link = get_previous_comments_link( $args['prev_text'] );
 		$next_link = get_next_comments_link( $args['next_text'] );
@@ -2868,10 +3016,13 @@
  * @return string Markup for pagination links.
  */
 function get_the_comments_pagination( $args = array() ) {
-	$navigation = '';
-	$args       = wp_parse_args( $args, array(
-		'screen_reader_text' => __( 'Comments navigation' ),
-	) );
+	$navigation   = '';
+	$args         = wp_parse_args(
+		$args,
+		array(
+			'screen_reader_text' => __( 'Comments navigation' ),
+		)
+	);
 	$args['echo'] = false;
 
 	// Make sure we get a string back. Plain is the next best thing.
@@ -2939,7 +3090,7 @@
 
 	$orig_scheme = $scheme;
 
-	if ( empty( $blog_id ) || !is_multisite() ) {
+	if ( empty( $blog_id ) || ! is_multisite() ) {
 		$url = get_option( 'home' );
 	} else {
 		switch_to_blog( $blog_id );
@@ -2948,16 +3099,18 @@
 	}
 
 	if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
-		if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow )
+		if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $pagenow ) {
 			$scheme = 'https';
-		else
+		} else {
 			$scheme = parse_url( $url, PHP_URL_SCHEME );
+		}
 	}
 
 	$url = set_url_scheme( $url, $scheme );
 
-	if ( $path && is_string( $path ) )
+	if ( $path && is_string( $path ) ) {
 		$url .= '/' . ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the home URL.
@@ -3009,7 +3162,7 @@
  * @return string Site URL link with optional path appended.
  */
 function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
-	if ( empty( $blog_id ) || !is_multisite() ) {
+	if ( empty( $blog_id ) || ! is_multisite() ) {
 		$url = get_option( 'siteurl' );
 	} else {
 		switch_to_blog( $blog_id );
@@ -3019,8 +3172,9 @@
 
 	$url = set_url_scheme( $url, $scheme );
 
-	if ( $path && is_string( $path ) )
+	if ( $path && is_string( $path ) ) {
 		$url .= '/' . ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the site URL.
@@ -3063,10 +3217,11 @@
  * @return string Admin URL link with optional path appended.
  */
 function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) {
-	$url = get_site_url($blog_id, 'wp-admin/', $scheme);
-
-	if ( $path && is_string( $path ) )
+	$url = get_site_url( $blog_id, 'wp-admin/', $scheme );
+
+	if ( $path && is_string( $path ) ) {
 		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the admin area URL.
@@ -3093,8 +3248,9 @@
 function includes_url( $path = '', $scheme = null ) {
 	$url = site_url( '/' . WPINC . '/', $scheme );
 
-	if ( $path && is_string( $path ) )
-		$url .= ltrim($path, '/');
+	if ( $path && is_string( $path ) ) {
+		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the URL to the includes directory.
@@ -3119,8 +3275,9 @@
 function content_url( $path = '' ) {
 	$url = set_url_scheme( WP_CONTENT_URL );
 
-	if ( $path && is_string( $path ) )
-		$url .= '/' . ltrim($path, '/');
+	if ( $path && is_string( $path ) ) {
+		$url .= '/' . ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the URL to the content directory.
@@ -3131,7 +3288,7 @@
 	 * @param string $path Path relative to the URL to the content directory. Blank string
 	 *                     if no path is specified.
 	 */
-	return apply_filters( 'content_url', $url, $path);
+	return apply_filters( 'content_url', $url, $path );
 }
 
 /**
@@ -3150,26 +3307,28 @@
  */
 function plugins_url( $path = '', $plugin = '' ) {
 
-	$path = wp_normalize_path( $path );
-	$plugin = wp_normalize_path( $plugin );
+	$path          = wp_normalize_path( $path );
+	$plugin        = wp_normalize_path( $plugin );
 	$mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR );
 
-	if ( !empty($plugin) && 0 === strpos($plugin, $mu_plugin_dir) )
+	if ( ! empty( $plugin ) && 0 === strpos( $plugin, $mu_plugin_dir ) ) {
 		$url = WPMU_PLUGIN_URL;
-	else
+	} else {
 		$url = WP_PLUGIN_URL;
-
+	}
 
 	$url = set_url_scheme( $url );
 
-	if ( !empty($plugin) && is_string($plugin) ) {
-		$folder = dirname(plugin_basename($plugin));
-		if ( '.' != $folder )
-			$url .= '/' . ltrim($folder, '/');
+	if ( ! empty( $plugin ) && is_string( $plugin ) ) {
+		$folder = dirname( plugin_basename( $plugin ) );
+		if ( '.' != $folder ) {
+			$url .= '/' . ltrim( $folder, '/' );
+		}
 	}
 
-	if ( $path && is_string( $path ) )
-		$url .= '/' . ltrim($path, '/');
+	if ( $path && is_string( $path ) ) {
+		$url .= '/' . ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the URL to the plugins directory.
@@ -3202,18 +3361,21 @@
  * @return string Site URL link with optional path appended.
  */
 function network_site_url( $path = '', $scheme = null ) {
-	if ( ! is_multisite() )
-		return site_url($path, $scheme);
+	if ( ! is_multisite() ) {
+		return site_url( $path, $scheme );
+	}
 
 	$current_network = get_network();
 
-	if ( 'relative' == $scheme )
+	if ( 'relative' == $scheme ) {
 		$url = $current_network->path;
-	else
+	} else {
 		$url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme );
-
-	if ( $path && is_string( $path ) )
+	}
+
+	if ( $path && is_string( $path ) ) {
 		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the network site URL.
@@ -3244,22 +3406,26 @@
  * @return string Home URL link with optional path appended.
  */
 function network_home_url( $path = '', $scheme = null ) {
-	if ( ! is_multisite() )
-		return home_url($path, $scheme);
+	if ( ! is_multisite() ) {
+		return home_url( $path, $scheme );
+	}
 
 	$current_network = get_network();
-	$orig_scheme = $scheme;
-
-	if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) )
+	$orig_scheme     = $scheme;
+
+	if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
 		$scheme = is_ssl() && ! is_admin() ? 'https' : 'http';
-
-	if ( 'relative' == $scheme )
+	}
+
+	if ( 'relative' == $scheme ) {
 		$url = $current_network->path;
-	else
+	} else {
 		$url = set_url_scheme( 'http://' . $current_network->domain . $current_network->path, $scheme );
-
-	if ( $path && is_string( $path ) )
+	}
+
+	if ( $path && is_string( $path ) ) {
 		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the network home URL.
@@ -3272,7 +3438,7 @@
 	 * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https',
 	 *                                 'relative' or null.
 	 */
-	return apply_filters( 'network_home_url', $url, $path, $orig_scheme);
+	return apply_filters( 'network_home_url', $url, $path, $orig_scheme );
 }
 
 /**
@@ -3286,13 +3452,15 @@
  * @return string Admin URL link with optional path appended.
  */
 function network_admin_url( $path = '', $scheme = 'admin' ) {
-	if ( ! is_multisite() )
+	if ( ! is_multisite() ) {
 		return admin_url( $path, $scheme );
-
-	$url = network_site_url('wp-admin/network/', $scheme);
-
-	if ( $path && is_string( $path ) )
-		$url .= ltrim($path, '/');
+	}
+
+	$url = network_site_url( 'wp-admin/network/', $scheme );
+
+	if ( $path && is_string( $path ) ) {
+		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the network admin URL.
@@ -3317,10 +3485,11 @@
  * @return string Admin URL link with optional path appended.
  */
 function user_admin_url( $path = '', $scheme = 'admin' ) {
-	$url = network_site_url('wp-admin/user/', $scheme);
-
-	if ( $path && is_string( $path ) )
-		$url .= ltrim($path, '/');
+	$url = network_site_url( 'wp-admin/user/', $scheme );
+
+	if ( $path && is_string( $path ) ) {
+		$url .= ltrim( $path, '/' );
+	}
 
 	/**
 	 * Filters the user admin URL for the current user.
@@ -3388,13 +3557,15 @@
 	}
 
 	$url = trim( $url );
-	if ( substr( $url, 0, 2 ) === '//' )
+	if ( substr( $url, 0, 2 ) === '//' ) {
 		$url = 'http:' . $url;
+	}
 
 	if ( 'relative' == $scheme ) {
 		$url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) );
-		if ( $url !== '' && $url[0] === '/' )
-			$url = '/' . ltrim($url , "/ \t\n\r\0\x0B" );
+		if ( $url !== '' && $url[0] === '/' ) {
+			$url = '/' . ltrim( $url, "/ \t\n\r\0\x0B" );
+		}
 	} else {
 		$url = preg_replace( '#^\w+://#', $scheme . '://', $url );
 	}
@@ -3432,20 +3603,21 @@
 	$user_id = $user_id ? (int) $user_id : get_current_user_id();
 
 	$blogs = get_blogs_of_user( $user_id );
-	if ( is_multisite() && ! user_can( $user_id, 'manage_network' ) && empty($blogs) ) {
+	if ( is_multisite() && ! user_can( $user_id, 'manage_network' ) && empty( $blogs ) ) {
 		$url = user_admin_url( $path, $scheme );
 	} elseif ( ! is_multisite() ) {
 		$url = admin_url( $path, $scheme );
 	} else {
 		$current_blog = get_current_blog_id();
-		if ( $current_blog  && ( user_can( $user_id, 'manage_network' ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) {
+		if ( $current_blog && ( user_can( $user_id, 'manage_network' ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) {
 			$url = admin_url( $path, $scheme );
 		} else {
 			$active = get_active_blog_for_user( $user_id );
-			if ( $active )
+			if ( $active ) {
 				$url = get_admin_url( $active->blog_id, $path, $scheme );
-			else
+			} else {
 				$url = user_admin_url( $path, $scheme );
+			}
 		}
 	}
 
@@ -3460,7 +3632,7 @@
 	 * @param string $scheme  Scheme to give the URL context. Accepts 'http', 'https', 'login',
 	 *                        'login_post', 'admin', 'relative' or null.
 	 */
-	return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme);
+	return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme );
 }
 
 /**
@@ -3476,12 +3648,13 @@
 function get_edit_profile_url( $user_id = 0, $scheme = 'admin' ) {
 	$user_id = $user_id ? (int) $user_id : get_current_user_id();
 
-	if ( is_user_admin() )
+	if ( is_user_admin() ) {
 		$url = user_admin_url( 'profile.php', $scheme );
-	elseif ( is_network_admin() )
+	} elseif ( is_network_admin() ) {
 		$url = network_admin_url( 'profile.php', $scheme );
-	else
+	} else {
 		$url = get_dashboard_url( $user_id, 'profile.php', $scheme );
+	}
 
 	/**
 	 * Filters the URL for a user's profile editor.
@@ -3493,7 +3666,7 @@
 	 * @param string $scheme  Scheme to give the URL context. Accepts 'http', 'https', 'login',
 	 *                        'login_post', 'admin', 'relative' or null.
 	 */
-	return apply_filters( 'edit_profile_url', $url, $user_id, $scheme);
+	return apply_filters( 'edit_profile_url', $url, $user_id, $scheme );
 }
 
 /**
@@ -3553,7 +3726,7 @@
  * Outputs rel=canonical for singular queries.
  *
  * @since 2.9.0
- * @since 4.6.0 Adjusted to use wp_get_canonical_url().
+ * @since 4.6.0 Adjusted to use `wp_get_canonical_url()`.
  */
 function rel_canonical() {
 	if ( ! is_singular() ) {
@@ -3582,7 +3755,7 @@
  * via the {@see 'pre_get_shortlink'} filter or filter the output via the {@see 'get_shortlink'}
  * filter.
  *
- * @since 3.0.0.
+ * @since 3.0.0
  *
  * @param int    $id          Optional. A post or site id. Default is 0, which means the current post or site.
  * @param string $context     Optional. Whether the id is a 'site' id, 'post' id, or 'media' id. If 'post',
@@ -3616,11 +3789,12 @@
 	$post_id = 0;
 	if ( 'query' == $context && is_singular() ) {
 		$post_id = get_queried_object_id();
-		$post = get_post( $post_id );
+		$post    = get_post( $post_id );
 	} elseif ( 'post' == $context ) {
 		$post = get_post( $id );
-		if ( ! empty( $post->ID ) )
+		if ( ! empty( $post->ID ) ) {
 			$post_id = $post->ID;
+		}
 	}
 
 	$shortlink = '';
@@ -3659,8 +3833,9 @@
 function wp_shortlink_wp_head() {
 	$shortlink = wp_get_shortlink( 0, 'query' );
 
-	if ( empty( $shortlink ) )
+	if ( empty( $shortlink ) ) {
 		return;
+	}
 
 	echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n";
 }
@@ -3673,15 +3848,17 @@
  * @since 3.0.0
  */
 function wp_shortlink_header() {
-	if ( headers_sent() )
+	if ( headers_sent() ) {
 		return;
-
-	$shortlink = wp_get_shortlink(0, 'query');
-
-	if ( empty($shortlink) )
+	}
+
+	$shortlink = wp_get_shortlink( 0, 'query' );
+
+	if ( empty( $shortlink ) ) {
 		return;
-
-	header('Link: <' . $shortlink . '>; rel=shortlink', false);
+	}
+
+	header( 'Link: <' . $shortlink . '>; rel=shortlink', false );
 }
 
 /**
@@ -3701,15 +3878,17 @@
 function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
 	$post = get_post();
 
-	if ( empty( $text ) )
-		$text = __('This is the short link.');
-
-	if ( empty( $title ) )
+	if ( empty( $text ) ) {
+		$text = __( 'This is the short link.' );
+	}
+
+	if ( empty( $title ) ) {
 		$title = the_title_attribute( array( 'echo' => false ) );
+	}
 
 	$shortlink = wp_get_shortlink( $post->ID );
 
-	if ( !empty( $shortlink ) ) {
+	if ( ! empty( $shortlink ) ) {
 		$link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';
 
 		/**
@@ -3760,6 +3939,29 @@
 	return $args['url'];
 }
 
+
+/**
+ * Check if this comment type allows avatars to be retrieved.
+ *
+ * @since 5.1.0
+ *
+ * @param string $comment_type Comment type to check.
+ * @return bool Whether the comment type is allowed for retrieving avatars.
+ */
+function is_avatar_comment_type( $comment_type ) {
+	/**
+	 * Filters the list of allowed comment types for retrieving avatars.
+	 *
+	 * @since 3.0.0
+	 *
+	 * @param array $types An array of content types. Default only contains 'comment'.
+	 */
+	$allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );
+
+	return in_array( $comment_type, (array) $allowed_comment_types, true );
+}
+
+
 /**
  * Retrieves default data about the avatar.
  *
@@ -3797,17 +3999,20 @@
  * }
  */
 function get_avatar_data( $id_or_email, $args = null ) {
-	$args = wp_parse_args( $args, array(
-		'size'           => 96,
-		'height'         => null,
-		'width'          => null,
-		'default'        => get_option( 'avatar_default', 'mystery' ),
-		'force_default'  => false,
-		'rating'         => get_option( 'avatar_rating' ),
-		'scheme'         => null,
-		'processed_args' => null, // if used, should be a reference
-		'extra_attr'     => '',
-	) );
+	$args = wp_parse_args(
+		$args,
+		array(
+			'size'           => 96,
+			'height'         => null,
+			'width'          => null,
+			'default'        => get_option( 'avatar_default', 'mystery' ),
+			'force_default'  => false,
+			'rating'         => get_option( 'avatar_rating' ),
+			'scheme'         => null,
+			'processed_args' => null, // if used, should be a reference
+			'extra_attr'     => '',
+		)
+	);
 
 	if ( is_numeric( $args['size'] ) ) {
 		$args['size'] = absint( $args['size'] );
@@ -3841,12 +4046,12 @@
 	}
 
 	switch ( $args['default'] ) {
-		case 'mm' :
-		case 'mystery' :
-		case 'mysteryman' :
+		case 'mm':
+		case 'mystery':
+		case 'mysteryman':
 			$args['default'] = 'mm';
 			break;
-		case 'gravatar_default' :
+		case 'gravatar_default':
 			$args['default'] = false;
 			break;
 	}
@@ -3872,13 +4077,13 @@
 	 */
 	$args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email );
 
-	if ( isset( $args['url'] ) && ! is_null( $args['url'] ) ) {
+	if ( isset( $args['url'] ) ) {
 		/** This filter is documented in wp-includes/link-template.php */
 		return apply_filters( 'get_avatar_data', $args, $id_or_email );
 	}
 
 	$email_hash = '';
-	$user = $email = false;
+	$user       = $email = false;
 
 	if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) {
 		$id_or_email = get_comment( $id_or_email );
@@ -3902,15 +4107,7 @@
 		// Post Object
 		$user = get_user_by( 'id', (int) $id_or_email->post_author );
 	} elseif ( $id_or_email instanceof WP_Comment ) {
-		/**
-		 * Filters the list of allowed comment types for retrieving avatars.
-		 *
-		 * @since 3.0.0
-		 *
-		 * @param array $types An array of content types. Default only contains 'comment'.
-		 */
-		$allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) );
-		if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types ) ) {
+		if ( ! is_avatar_comment_type( get_comment_type( $id_or_email ) ) ) {
 			$args['url'] = false;
 			/** This filter is documented in wp-includes/link-template.php */
 			return apply_filters( 'get_avatar_data', $args, $id_or_email );
@@ -3936,7 +4133,7 @@
 
 	if ( $email_hash ) {
 		$args['found_avatar'] = true;
-		$gravatar_server = hexdec( $email_hash[0] ) % 3;
+		$gravatar_server      = hexdec( $email_hash[0] ) % 3;
 	} else {
 		$gravatar_server = rand( 0, 2 );
 	}