'url ls-mail-source' => 'show full URL of newsgroup or IMAP folder',
'format|f=s ls-external' => $ls_format,
+'prune:s forget-search' =>
+ ['TYPE|local|remote', 'prune all, remote or local folders' ],
+
'limit|n=i@' => ['NUM', 'limit on number of matches (default: 10000)' ],
'offset=i' => ['OFF', 'search result offset (default: 0)'],