From, Sender and Reply-to in show_additional_header plugin

[Antho]

Hello,

I'm trying to separately retrieve the three headers "From", "Sender" and "Reply-to" with the  "show_additional_headers" plugin.

Those headers convey different information, as described in RFC 5322 - Internet Message Format but it seems that RoundCube doesn't consider them as different, the headers are not present in the "message_headers_output" hook argument.

Am I doing something wrong ?
Thanks