The “fun_load_textdomain” filter is used to modify the path to the translation file. View load_plugin_textdomain for more details.

A plugin (or theme) can modify the path with the code:

<?php add_filter( 'fun_load_textdomain', 'filter_function_name' ); ?>

The hook is located in the file-un-attach/file-unattach.php file.


// Apply filter
function modify_fun_load_textdomain $path ) {
	return "path/to/custom/translation/file/";
add_filter('fun_load_textdomain', 'modify_fun_load_textdomain');

Note:  $path is an string, path relative to the translation .mo file.

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