bind pub o "!unban" unban:pub
 
proc unban:pub {nick uhost hand chan text} {
   global botnick
     if {![botisop $chan]} {
     putserv "PRIVMSG $chan :I'm not opped!"
     } else {
     set chanbanlist [lsort -index 2 -integer -decreasing [chanbans $chan]]
     set last [lindex [lindex $chanbanlist end] 0]
     if {[llength $chanbanlist] > 0} {
     putquick "MODE $chan -b $last"
     return 0
     }
  }
}
putlog "Unban last ban loaded successfully."