get_terms : name_like query parameter not escaped

Hi !

I’ve had a problem querying a term from a custom taxonomy using get_terms() :

$query_term = array(    'parent'        => $last_id,
                        'name__like'    => $term_name
);
$cat_term_obj = get_terms($tax, $query_term);

$cat_term_obj contains the right object *except* when the queried term name contains an “&” character.

It seems ‘name__like’ is not escaped by get_terms before querying the database (the term is inserted by wp_insert_term which escapes all fields).

So I used the following trick to resolve the issue:

$query_term = array(    'parent'        => $last_id,
                        'name__like'    => esc_attr($term_name)
);
$cat_term_obj = get_terms($tax, $query_term);

Don’t know if this is a bug or a “by design” situation so I share it with you.

Looic.