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

Description:
   This hook is triggered whenever the client joins a channel, or whenever
   it observes another client joining a common channel.

Parameters:
   $0    nickname of person joining channel
   $1    channel joined
   $2    address of person joining channel (same as $userhost())
   $3    person joining's channel status (on avalon 2.9 servers),
         could be either (+o) or (+v)

Examples:
   To distinguish between the client and other users joining the channel:
      on ^join "*" {
         if ( [$0] == N ) {
            echo *** You have joined channel $1
         } {
            echo *** $0 \($2\) has joined channel $1
         }
      }

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