Ticket #25283: 25283.diff

src/wp-admin/includes/revision.php

@@ -55 +55 @@
         $return = array();
 
         foreach ( _wp_post_revision_fields() as $field => $name ) {
+                /**
+                 * Contextually filter a post revision field.
+                 *
+                 * The $field at the end of the filter hook corresponds to each of the post
+                 * fields of the revision object being iterated over in a foreach statement.
+                 * The dynamic filter hook name means all revision post field are filterable
+                 * via this hook in this context.
+                 *
+                 * @since 3.6.0
+                 *
+                 * @param string  $compare_from->$field The current revision field to compare to or from.
+                 * @param string  $field                The current revision field.
+                 * @param WP_Post $compare_from         The revision post object to compare to or from.
+                 * @param string  null                  The context of whether the current revision is the old or the new one. Values are 'to' or 'from'.
+                 */
                 $content_from = $compare_from ? apply_filters( "_wp_post_revision_field_$field", $compare_from->$field, $field, $compare_from, 'from' ) : '';
+
+                //duplicate_hook
                 $content_to = apply_filters( "_wp_post_revision_field_$field", $compare_to->$field, $field, $compare_to, 'to' );
 
                 $diff = wp_text_diff( $content_from, $content_to, array( 'show_split_view' => true ) );