Output the Reply-To header field if present in a message.
I want to be able to see what the sender intended in my mail client,
before hitting the reply key.  Only json output is changed,
like the recently added Bcc field.
---
 notmuch-show.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/notmuch-show.c b/notmuch-show.c
index 0b7abf1..f758f56 100644
--- a/notmuch-show.c
+++ b/notmuch-show.c
@@ -210,6 +210,7 @@ format_headers_json (sprinter_t *sp, GMimeMessage *message,
 {
     InternetAddressList *recipients;
     const char *recipients_string;
+    const char *reply_to_string;
 
     sp->begin_map (sp);
 
@@ -240,6 +241,12 @@ format_headers_json (sprinter_t *sp, GMimeMessage *message,
 	sp->string (sp, recipients_string);
     }
 
+    reply_to_string = g_mime_message_get_reply_to (message);
+    if (reply_to_string) {
+	sp->map_key (sp, "Reply-To");
+	sp->string (sp, reply_to_string);
+    }
+
     if (reply) {
 	sp->map_key (sp, "In-reply-to");
 	sp->string (sp, g_mime_object_get_header (GMIME_OBJECT (message), "In-reply-to"));
-- 
1.7.12.1