Sets English as the default language to post works to Archive of Our Own.
< Commentaires sur AO3: Set Default Posting Language
Do you mean for browsing fic? I don't intend to cover search filters in this script—this is specifically for posting. I only write in English, but I browse fic in other languages. You'd be welcome to make your own version forked from this to set a default search language, if none of the existing scripts that cover default filters include language.
This is indeed simple and incredibly useful - all I would add is that when you look at the page source, language IDs are non-numeric (English is 'en'), and that adding the work_search_language_id helps cover the way that I browse.