|   |   | 
| $chan.common Returns the common channel with a user | 
| Usage | 
| <string> $chan.common(<nickname:string>[,<context_id:string>]) | 
| Description | 
| Returns the common channel with the user specified by <nickname>. If <context_id> is not passed, the current context is used. If the specified window is not a channel, a warning is printed and 0 is returned. |