Fix language of WooCommerce ‘Thank You’ redirect URL for qTranslate

I struggled a bit with wrong translation of the thank you page. For translation I used qTranslate and IM8 qTranslate WooCommerce

Looking at the Network tab in Chrome I saw the 301 redirect, but it took a while to figure out that a missing slash (/) was doing that wrong redirect.

Screen Shot 2014-10-19 at 9.37.36 AM Screen Shot 2014-10-19 at 9.37.49 AM
I added the following to functions.php to fix the issue:

 * Add slash before question mark due 301 redirect that prevents the lang query to pass
function atc_payment_successful_result( $result ) {

 $result['redirect'] = str_replace( '?lang', '/?lang', $result['redirect'] );
 return $result;
add_filter( 'im8qtranslatewoocommerce_payment_redirect_filters', '__return_empty_array' ); // Prevent plugin filter
add_filter( 'woocommerce_payment_successful_result', 'atc_payment_successful_result' );


Converting gettext .po files to binary .mo files via command line

Updated a WP plugin and translation needed fixation. I edited the .po file, but no change was on the site. I needed to convert it to .mo file.
Thanks to Joss Crowcroft and his post I was able to convert.

$ msgfmt -cv -o wp-content/plugins/woocommerce/i18n/languages/ wp-content/plugins/woocommerce/i18n/languages/woocommerce-sk_SK.po
1939 translated messages, 2 untranslated messages.