The mailing list for listmasters using Sympa

[address@concealed]

Is there a way to supress the custom_subject of a lists of lists?

For example, Lets say I have three lists: list1, list2, and list3, and each 
one has the name of the list as the custom_subject.  Then I create a list 
called "alllists" (custom_subject alllists), with list1, list2, and list3 as 
the subscribers.  If I am a member of list1, and someone sends a message to 
alllists, the subject line looks like:

[list1][alllists] Test Subject

Ideally, I would like to supress the custom_subject in this case.  Is this 
possible?

Thanks,

Eric