The ones that need (improved) documentation are:
function privatemsg_sql_load(&$fragments, $pmid, $account) - Has basic documentation - but so basic that reading it I have no idea what calls it.
The rest have none:
function privatemsg_sql_participants(&$fragments, $thread_id)
function privatemsg_sql_unread_count(&$fragments, $account)
function privatemsg_sql_autocomplete(&$fragments, $search, $names) {
Comments
Comment #1
berdirThis is probably outdated and there is another similiar task open, #507680: Document query fragments