How to change list option headers_to_meta?
$ schleuder-conf lists show crypto-angels@mydomain headers_to_meta
["from", "to", "cc", "date"]
As "date" is always empty and the list will be a closed one (only members will post) I want to change it to show "from" only. But my experiments are not successful:
$ schleuder-conf lists set crypto-angels@mydomain headers_to_meta ["from"]
Error: undefined method `to_i' for {"from"=>{"\"}"=>nil}}:Hash
$ schleuder-conf lists set crypto-angels@mydomain headers_to_meta '["from"]'
Error: undefined method `to_i' for {"\\\"from\\\""=>{"\"}"=>nil}}:Hash
$ schleuder-conf lists set crypto-angels@mydomain headers_to_meta ["from",,,]
Error: undefined method `to_i' for {"from,,,"=>{"\"}"=>nil}}:Hash
$ schleuder-conf lists set crypto-angels@mydomain headers_to_meta ["from","","",""]
Error: undefined method `to_i' for {"from,,,"=>{"\"}"=>nil}}:Hash
$ schleuder-conf lists set crypto-angels@mydomain headers_to_meta [true,false,false,false]
Error: undefined method `to_i' for {"true,false,false,false"=>{"\"}"=>nil}}:Hash