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| $chan.matchbanexception Matches a mask against the channel ban exception list | 
| Usage | 
| <string> $chan.matchbanexception([window_id],<complete_mask>) | 
| Description | 
| Returns the ban exception mask that matches <complete_mask> on channel identified by [window_id]. If no ban exception mask matches <complete_mask> an empty string is returned. If [window_id] is empty, the current window is used. If the window designated by [window_id] is not a channel a warning is printed and an empty string is returned. This function is useful to determine if a ban exception set on the channel matches a user. |