Synopsis:
   on [<modes>]leave [<serial#>] [-|^]<match> { <action> }

Description:
   This hook is triggered whenever a client (the user's or any other) is
   observed leaving a channel (but not signing off from irc).

Parameters:
   $0    the nickname of the person leaving the channel
   $1    the channel left by the person

Examples:
   To distinguish the client from other users leaving a channel:
      on ^leave "*" {
         if ( [$0] == N ) {
            echo *** You have left channel $1
         } {
            echo *** $0 \($userhost()\) has left channel $1
         }
      }

See Also:
   part(1); userhost(6)