Add more explanation of known vs subscribed lists to manual.

Mention in both the "Mailing Lists" and "Handling Mailing Lists"
sections the difference between known and subscribed mailing lists.

Note that the Mail-Followup-To header is generated if any of the
recipients are known mailing lists.  If any of those are subscribed
mailing lists, the sender's address will not be in the header.  If all
of them are known (but not subscribed), the sender's address will be
added to the header.

diff --git a/doc/manual.xml.head b/doc/manual.xml.head
index 01888032b91b49a4123446c2ea71ede7248f1071..92f6df892caae3fc971c693d9259d28ed81ff5be 100644 (file)
--- a/doc/manual.xml.head
+++ b/doc/manual.xml.head
@@ -3225,9 +3225,13 @@ effect as specifying the list address via the <command>lists</command>
 command (except the group feature). Once you have done this, the <link
 linkend="list-reply"><literal>&lt;list-reply&gt;</literal></link>
 function will work for all known lists.  Additionally, when you send a
-message to a subscribed list, Mutt will add a Mail-Followup-To header to
-tell other users' mail user agents not to send copies of replies to your
-personal address.
+message to a known list and <link
+linkend="followup-to">$followup_to</link> is set, Mutt will add a
+Mail-Followup-To header.  For unsubscribed lists, this will include
+your personal address, ensuring you receive a copy of replies.  For
+subscribed mailing lists, the header will not, telling other users'
+mail user agents not to send copies of replies to your personal
+address.
 </para>
 
 <note>
@@ -6093,14 +6097,17 @@ specified by <literal>Mail-Followup-To</literal>, see below).
 <para>
 Mutt also supports the <literal>Mail-Followup-To</literal> header.  When
 you send a message to a list of recipients which includes one or several
-subscribed mailing lists, and if the <link
+known mailing lists, and if the <link
 linkend="followup-to">$followup_to</link> option is set, Mutt will
-generate a Mail-Followup-To header which contains all the recipients to
-whom you send this message, but not your address. This indicates that
+generate a Mail-Followup-To header.  If any of the recipients are
+subscribed mailing lists, this header will contain all the recipients
+to whom you send this message, but not your address. This indicates that
 group-replies or list-replies (also known as <quote>followups</quote>)
 to this message should only be sent to the original recipients of the
 message, and not separately to you - you'll receive your copy through
-one of the mailing lists you are subscribed to.
+one of the mailing lists you are subscribed to.  If none of the
+recipients are subscribed mailing lists the header will also contain
+your address, ensuring you receive a copy of replies.
 </para>
 
 <para>