Event core.search_modify_submit_parameters

Identifier: core.search_modify_submit_parameters
Location (aprox): /search.php:128
Parameters:
keywords
author
author_id
search_id
submit
Explanation: An event that I need for my QTE extension. If i search by topic attribute only, $keywords, $author, $author_id, $search_id are empty, and $submit is false if i change sort order on results page, or use pagination.
So, this event allows to modify $submit, to trigger a search