The message-wide-reply pops up a message buffer
that’s a wide reply to the message in the current buffer. A
wide reply is a reply that goes out to all people listed
in the To, From (or
Reply-to) and Cc headers.
Message uses the normal methods to determine where wide
replies are to go, but you can change the behavior to suit your
needs by fiddling with the
message-wide-reply-to-function. It is used in the
same way as message-reply-to-function (see Reply).
Addresses that match the
message-dont-reply-to-names regular expression (or
list of regular expressions) will be removed from the
Cc header. A value of nil means exclude
your name only.
message-prune-recipient-rules is used to prune
the addresses used when doing a wide reply. It’s meant to
be used to remove duplicate addresses and the like. It’s a
list of lists, where the first element is a regexp to match the
address to trigger the rule, and the second is a regexp that will
be expanded based on the first, to match addresses to be
pruned.
It’s complicated to explain, but it’s easy to use.
For instance, if you get an email from
‘foo@example.org’, but
‘foo@zot.example.org’ is also in the
Cc list, then your wide reply will go out to both
these addresses, since they are unique.
To avoid this, do something like the following:
(setq message-prune-recipient-rules
'(("^\\([^@]+\\)@\\(.*\\)" "\\1@.*[.]\\2")))
If, for instance, you want all wide replies that involve messages from ‘cvs@example.org’ to go to that address, and nowhere else (i.e., remove all other recipients if ‘cvs@example.org’ is in the recipient list:
(setq message-prune-recipient-rules
'(("cvs@example.org" ".")))
If message-wide-reply-confirm-recipients is
non-nil you will be asked to confirm that you want
to reply to multiple recipients. The default is
nil.