Using regular expressions (regexps) in the Search tab

The Search feature of qBittorrent is simply superb way to fill one's hard disk :-) I just wish there was one refinement - possibility to use regular expressions in the searches (might be another button, next to "Search"). Implementation shouldn't cause much work using the regexp library (and possibly a function pointer in the original search routine). Though, of course one can always try to refine the search clause...