Wietse Venema writes:
[join vs union]
I think there is something to be said for either name. It does not matter to me, I think you should decide on a name, if you should choose to include such functionality, to ensure it fits with Postfix's naming conventions best.
That was a question that I had about the proposed implementation. The current behavior loses information about which inputs do/don't contribute to a result.
In the proposed implementation, only the *original* input contributes to a result.
If you would like me to change the patch, please let me know. Thanks, Roel