[PATCH] doc/reply: Clarify how reply-to header is handled

[Michal Sojka <sojkam1@fel.cvut.cz>]

Current documentation and comments in the code do not correspond to
the actual code and tests in the test suite ("Un-munging Reply-To" in
T230-reply-to-sender.sh). Fix it.
---
 doc/man1/notmuch-reply.rst | 6 ++++--
 notmuch-reply.c            | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/doc/man1/notmuch-reply.rst b/doc/man1/notmuch-reply.rst
index cfbd4ea..d73f8f1 100644
--- a/doc/man1/notmuch-reply.rst
+++ b/doc/man1/notmuch-reply.rst
@@ -13,8 +13,10 @@ DESCRIPTION
 Constructs a reply template for a set of messages.
 
 To make replying to email easier, **notmuch reply** takes an existing
-set of messages and constructs a suitable mail template. The Reply-to:
-header (if any, otherwise From:) is used for the To: address. Unless
+set of messages and constructs a suitable mail template. Its To:
+address is set according to the original email in this way: if the
+Reply-to: header is present and different from any To:/Cc: address it
+is used, otherwise From: header is used. Unless
 ``--reply-to=sender`` is specified, values from the To: and Cc: headers
 are copied, but not including any of the current user's email addresses
 (as configured in primary\_mail or other\_email in the .notmuch-config
diff --git a/notmuch-reply.c b/notmuch-reply.c
index 6df54fc..3c6d685 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -332,7 +332,7 @@ add_recipients_from_message (GMimeMessage *reply,
      * field and use the From header. This ensures the original sender
      * will get the reply even if not subscribed to the list. Note
      * that the address in the Reply-To header will always appear in
-     * the reply.
+     * the reply if reply_all is true.
      */
     if (reply_to_header_is_redundant (message)) {
 	reply_to_map[0].header = "from";
-- 
2.6.4