Cyr-To-Lat

FAQ

How can I define my own substitutions?

Add this code to your theme’s functions.php file:

/**
 * Modify conversion table.
 *
 * @param array $table Conversion table.
 *
 * @return array
 */
function my_ctl_table( $table ) {
   $table['Ъ'] = 'U';
   $table['ъ'] = 'u';

   return $table;
}
add_filter( 'ctl_table', 'my_ctl_table' );

How can I redefine non-standard locale?

For instance, if your non-standard locale is uk_UA, you can redefine it to uk by adding the following code to your theme’s function.php file:

/**
 * Use non-standard locale.
 *
 * @param string $locale Current locale.
 *
 * @return string
 */
function my_ctl_locale( $locale ) {
    if ( 'uk_UA' === $locale ) {
        return 'uk';
    }

    return $locale;
}
add_filter( 'ctl_locale', 'my_ctl_locale' );

How can I define my own transliteration of titles?

Add similar code to your theme’s functions.php file:

/**
 * Filter title before sanitizing.
 *
 * @param string|false $result Sanitized title.
 * @param string       $title  Title.
 *
 * @return string|false
 */
function my_ctl_pre_sanitize_title( $result, $title ) {
    if ( 'пиво' === $title ) {
        return 'beer';
    }

    return $result;
}
add_filter( 'ctl_pre_sanitize_title', 10, 2 );

How can I control the legacy sanitize_title bridge?

Version 7.0 uses explicit slug handlers for posts, terms, WooCommerce attributes, and other known save paths. A legacy sanitize_title bridge remains as a compatibility fallback for broad calls that older integrations may still rely on.

You can disable the broad fallback with this code:

add_filter( 'ctl_enable_legacy_sanitize_title_bridge', '__return_false' );

The filter receives the current default value, $title, $raw_title, and $context. Explicit known contexts, such as WordPress save handling, continue to use the dedicated 7.0 slug paths.

For debugging unknown bridge calls, define CYR_TO_LAT_DEBUG_LEGACY_SANITIZE_TITLE_BRIDGE as true. This diagnostic log is disabled by default and is not enabled by WP_DEBUG.

How can I define my own transliteration of filenames?

Add similar code to your theme’s functions.php file:

/**
 * Filter filename before sanitizing.
 *
 * @param string|false $result   Sanitized filename.
 * @param string       $filename Title.
 *
 * @return string|false
 */
function my_ctl_pre_sanitize_filename( $result, $filename ) {
    if ( 'пиво' === $filename ) {
        return 'beer';
    }

    return $result;
}
add_filter( 'ctl_pre_sanitize_filename', 10, 2 );

How can I allow the plugin to work on the frontend?

Add the following code to your plugin’s (or mu-plugin’s) main file. This code won’t work being added to a theme’s functions.php file.

/**
 * Filter status allowed Cyr To Lat plugin to work.
 *
 * @param bool $allowed
 *
 * @return bool
 */
function my_ctl_allow( bool $allowed ): bool {
    $uri = isset( $_SERVER['REQUEST_URI'] ) ?
        sanitize_url( wp_unslash( $_SERVER['REQUEST_URI'] ) ) :
        '';

    if ( 0 === strpos( $uri, '/divi-comments' ) ) {
        return true;
    }

    return $allowed;
}

add_filter( 'ctl_allow', 'my_ctl_allow' );

How can I limit post types for background conversion?

Add similar code to your theme’s functions.php file:

/**
 * Filter post types allowed for background conversion.
 *
 * @param array $post_types Allowed post types.
 *
 * @return array
 */
function my_ctl_post_types( $post_types ) {
    return [
        'post'          => 'post',
        'page'          => 'page',
        'attachment'    => 'attachment',
        'product'       => 'product',
        'nav_menu_item' => 'nav_menu_item',
    ];
}
add_filter( 'ctl_post_types', 'my_ctl_post_types' );

How can I convert many posts/terms using wp-cli?

Use the following command in the console:

wp cyr2lat regenerate [--post_type=<post_type>] [--post_status=<post_status>]

Where
-post_type is a list of post types,
-post_status is a list of post statuses.

What WooCommerce attribute behavior is supported in 7.0?

Cyr-To-Lat 7.0 explicitly handles new and updated WooCommerce product slugs, product category and tag slugs, global attribute slugs, global attribute term slugs, local product attribute keys, variation attribute keys, frontend add-to-cart requests, cart session loading, REST/API saves, and admin save flows.

Existing WooCommerce attributes are not automatically migrated during plugin upgrade. This means existing global pa_* taxonomies, local product attribute keys, and variation attribute keys keep their current stored values until you intentionally change them. A future migration tool should be separate and dry-run-first so store owners can review the impact before any rewrite.

How can I regenerate thumbnails safely?

Regeneration of thumbnails with the command wp media regenerate can break links in old posts as file names become transliterated.

To avoid it, deactivate the cyr2lat plugin during regeneration:

wp media regenerate --skip-plugins=cyr2lat

Can I contribute?

Yes, you can!

• Join in on our GitHub repository
• Join in on our Telegram Group

Where do I report security bugs found in this plugin?

Please report security vulnerabilities by email to:

[email protected]

When reporting a vulnerability, please include as much information as possible to help us reproduce and investigate the issue, such as:

• A clear description of the vulnerability
• Steps to reproduce
• Proof-of-concept or exploit code (if available)
• Affected versions

We will review your report and respond as quickly as possible.