WordPress SEO by Yoast breadcrumb fix

File: wordpress-seo/frontend/class-breadcrumbs.php

Line 164 - 170:
            } elseif ( is_404() ) {
                if ( isset( $options['breadcrumbs-404crumb'] ) && $options['breadcrumbs-404crumb'] != '' )
                    $crumb404 = $options['breadcrumbs-404crumb'];
                else
                    $crumb404 = __( 'Error 404: Page not found', 'wordpress-seo' );
                $links[] = array( 'text' => $crumb404 );
            }

replace with:
            } elseif ( is_404() ) {

                if ( get_query_var( 'year' ) !== 0 || ( get_query_var( 'monthnum' ) !== 0 || get_query_var( 'day' ) !== 0 ) ) {

                    if ( "page" == $on_front && !is_home() ) {
                        if ( $blog_page && ( !isset( $options['breadcrumbs-blog-remove'] ) || !$options['breadcrumbs-blog-remove'] ) )
                            $links[] = array( 'id' => $blog_page );
                    }

                    if ( isset( $options['breadcrumbs-archiveprefix'] ) )
                        $bc = $options['breadcrumbs-archiveprefix'];
                    else
                        $bc = __( 'Archives for', 'wordpress-seo' );


                    if ( get_query_var( 'day' ) !== 0 ) {
                        global $wp_locale;

                        $links[] = array(
                            'url'  => get_month_link( get_query_var( 'year' ), get_query_var( 'monthnum' ) ),
                            'text' => $wp_locale->get_month( get_query_var( 'monthnum' ) ) . ' ' . get_query_var( 'year' )
                        );
                        global $post;
                        $original_p = $post;
                        $post->post_date = sprintf("%04d-%02d-%02d 00:00:00", get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) );
                        $links[] = array( 'text' => $bc . " " . get_the_date() );
                        $post = $original_p;

                    } else if ( get_query_var( 'monthnum' ) !== 0 ) {
                        $links[] = array( 'text' => $bc . " " . single_month_title( ' ', false ) );
                    } else if ( get_query_var( 'year' ) !== 0 ) {
                        $links[] = array( 'text' => $bc . " " . get_query_var( 'year' ) );
                    }
                }
                else {
                    if ( isset( $options['breadcrumbs-404crumb'] ) && $options['breadcrumbs-404crumb'] != '' )
                        $crumb404 = $options['breadcrumbs-404crumb'];
                    else
                        $crumb404 = __( 'Error 404: Page not found', 'wordpress-seo' );
                    $links[] = array( 'text' => $crumb404 );
                }
            }




File: wordpress-seo/frontend/class-frontend.php

Line 355-359:
        } else if ( is_404() ) {
            $title = $this->get_title_from_options( 'title-404' );

            if ( empty( $title ) )
                $title_part = __( 'Page not found', 'wordpress-seo' );

replace with:
        } else if ( is_404() ) {

            if ( get_query_var( 'year' ) !== 0 || ( get_query_var( 'monthnum' ) !== 0 || get_query_var( 'day' ) !== 0 ) ) {

                if ( get_query_var( 'day' ) !== 0 ) {

                    global $post;
                    $original_p = $post;
                    $post->post_date = sprintf("%04d-%02d-%02d 00:00:00", get_query_var( 'year' ), get_query_var( 'monthnum' ), get_query_var( 'day' ) );
                    $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), get_the_date() );
                    $post = $original_p;
                }
                else if ( get_query_var( 'monthnum' ) !== 0 ) {
                    $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), single_month_title( ' ', false ) );
                }
                else if ( get_query_var( 'year' ) !== 0 ) {
                    $title_part = sprintf( __( '%s Archives', 'wordpress-seo' ), get_query_var( 'year' ) );
                }
                else {
                    $title_part = __( 'Archives', 'wordpress-seo' );
                }
            }
            else {
                $title = $this->get_title_from_options( 'title-404', array( 'term404' => get_query_var( 'pagename' ) ) );

                if ( empty( $title ) )
                    $title_part = __( 'Page not found', 'wordpress-seo' );
            }



File: wordpress-seo/inc/wpseo-functions.php

Line 110-111:
        'term_id'       => '',
    );

replace with:
        'term_id'       => '',
        'term404'       => '',
    );


Line 173-174:
        '%%caption%%'                   => $r->post_excerpt,
    );

replace with:
        '%%caption%%'                   => $r->post_excerpt,
        '%%term404%%'           => sanitize_text_field ( str_replace( '-', ' ', $r->term404 ) ),
    );



File: wordpress-seo/admin/pages/metas.php

Line 298-299:
            </tr>
            <tr>

replace with:
            </tr>
            <tr>
                <th>%%term404%%</th>
                <td>' . __( 'Replaced with the slug which caused the 404', 'wordpress-seo' ) . '</td>
            </tr>
            <tr>