Map a 'responsible' name to multiple addresses?

Several of our projects like to have the category's default 'responsible' 
be a general name like 'such-and-such-project-lead', then if the lead also 
wears a developer's hat, the "real" person may be assigned the PR for 
development - it shows quickly which PRs are actually in the hands of 
developers and which ones are in the lead's lap. I have one project that 
would like to have that general name map to two e-mail addresses, so I 
tried it - in the 'responsible' file, I defined
some-project-lead:Some Project Lead:address1@domain,address2@domain
And it looks like it works, except that it put the two addresses twice in 
the To: field of the e-mail:
To: address1@domain,address2@domain,address1@domain,address2@domain
Any thoughts?
My other workaround would be to just put one address in the 'responsible' 
file, then in the 'categories' file, for each of the categories, list that 
name and add the other address in the 'notify' list. That wouldn't be the 
end of the world, either, but if the 'responsible' name can map to two 
addresses, that's really how the project wants it to look, and then any 
updates can be made in one place as the lead responsibilties get 
reassigned over time. I don't know why it's putting the addresses twice in 
the e-mails, though.

--
Jo Wahle, Software Engineer, Engineering Support, SAIC
(Science Applications International Corporation ? www.saic.com)
Contractor to U.S. Geological Survey ? EROS, Sioux Falls SD 57198
 (Earth Resources Observation and Science ? eros.usgs.gov)

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