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

======Summary:======
Triggered by other people's [[quit]]s or disconnections from irc.

======Description:======
The __channel_signoff__ event is thrown every time someone on one of your
channels quits irc.  If the person is on multiple channels with you, multiple
events are thrown.  This event is not thrown when //you// quit irc, the
event for that is [[exit]].

======Parameters:======
|$0   |the channel the signoff was observed on |
|$1   |the nickname of the person leaving irc |
|$2-  |signoff message |

======Default action:======
If you don't suppress this event, the client will throw an [[on signoff]] event.

======Examples:======
To distinguish signoffs from one channel to another:
   on ^channel_signoff * (chan, nick, message) {
      if (iscurchan($chan)) {
         xecho -b Signoff by $nick \($message\);
      } {
         xecho -b Signoff by $nick from $chan \($message\);
      };
   };

======History======