MF_ALLOW_FILTER     = 0x0080,   // Control-F will ask for regex and
                                    // select the appropriate items.

        }
        break;
    }
    case CONTROL('F'):
    {
        if ( !( flags & MF_ALLOW_FILTER ) )
            break;
        char linebuf[80];
        gotoxy(1,1);
        clear_to_end_of_line();
        textcolor(WHITE);
        cprintf("Select what? (regex) ");
        textcolor(DARKGREY);
        bool validline = !cancelable_get_line(linebuf, sizeof linebuf, 80);
        if ( validline && linebuf[0] )
        {
            text_pattern tpat(linebuf);
            for ( unsigned int i = 0; i < items.size(); ++i )
            {
                if ( items[i]->level == MEL_ITEM &&
                     tpat.matches(items[i]->get_text()) )
                {
                    select_index(i);
                    if ( flags & MF_SINGLESELECT )
                    {
                        // Return the first item found.
                        get_selected(&sel);
                        return false;
                    }
                }
            }
            get_selected(&sel);

        nav = true;
        repaint = true;

        menu.set_flags(noselect ? MF_NOSELECT : MF_MULTISELECT);

        menu.set_flags(noselect ? MF_NOSELECT :
                       MF_MULTISELECT | MF_ALLOW_FILTER);

                        MF_MULTISELECT;

                        MF_MULTISELECT | MF_ALLOW_FILTER;