From 2699d8d989274e33ad5c7bb494d90d47705320ab Mon Sep 17 00:00:00 2001
From: Boone Gorges <boonebgorges@gmail.com>
Date: Fri, 24 Apr 2015 14:57:28 +0000
Subject: [PATCH] In `wp_list_categories()`, 'All' link should point to post
 type archive if taxonomy is not registered for 'post' or 'page'.

Instead, we point to the post type archive of the first registered
object_type that supports archives.

Props stevegrunwell, hrishiv90, boonebgorges.
Fixes #21881.
Built from https://develop.svn.wordpress.org/trunk@32292


git-svn-id: http://core.svn.wordpress.org/trunk@32263 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/category-template.php | 23 ++++++++++++++++++++++-
 wp-includes/version.php           |  2 +-
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/wp-includes/category-template.php b/wp-includes/category-template.php
index 9a2120c9e3..5fb7485332 100644
--- a/wp-includes/category-template.php
+++ b/wp-includes/category-template.php
@@ -532,7 +532,28 @@ function wp_list_categories( $args = '' ) {
 		}
 	} else {
 		if ( ! empty( $show_option_all ) ) {
-			$posts_page = ( 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
+
+			$posts_page = '';
+
+			// For taxonomies that belong only to custom post types, point to a valid archive.
+			$taxonomy_object = get_taxonomy( $r['taxonomy'] );
+			if ( ! in_array( 'post', $taxonomy_object->object_type ) && ! in_array( 'page', $taxonomy_object->object_type ) ) {
+				foreach ( $taxonomy_object->object_type as $object_type ) {
+					$_object_type = get_post_type_object( $object_type );
+
+					// Grab the first one.
+					if ( ! empty( $_object_type->has_archive ) ) {
+						$posts_page = get_post_type_archive_link( $object_type );
+						break;
+					}
+				}
+			}
+
+			// Fallback for the 'All' link is the front page.
+			if ( ! $posts_page ) {
+				$posts_page = 'page' == get_option( 'show_on_front' ) && get_option( 'page_for_posts' ) ? get_permalink( get_option( 'page_for_posts' ) ) : home_url( '/' );
+			}
+
 			$posts_page = esc_url( $posts_page );
 			if ( 'list' == $r['style'] ) {
 				$output .= "<li class='cat-item-all'><a href='$posts_page'>$show_option_all</a></li>";
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 0fbf6c78c4..e7a4722138 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32280';
+$wp_version = '4.3-alpha-32292';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.