Weee! I was about to crate post for this topic and now I fount it on To-do.. sweeet!
Code that I’m using right now:
// add the __() function to specific strings for translation in theme
$html = preg_replace("/'title'(.*?)('.+?',)/", "'title'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'label'(.*?)('.+?',)/", "'label'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'instructions'(.*?)('.+?',)/", "'instructions'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'button_label'(.*?)('.+?',)/", "'button_label'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'placeholder'(.*?)('.+?',)/", "'placeholder'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'message'(.*?)('.+?',)/", "'message'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'prepend'(.*?)('.+?',)/", "'prepend'$1__($2 'acf_export'),", $html);
$html = preg_replace("/'append'(.*?)('.+?',)/", "'append'$1__($2 'acf_export'),", $html);
The ‘acf_export’ helps out to find and replace it with theme text domain.
This helps out, but could make some improvements and find a way to add translation functions to choices.
