[PATCH 1/2] Command line changes for reply-to-sender

[Mark Walters]

Adds the format "--format=one" to possible reply formats which only
replies to the sender.

More precisely the function follows these rules:
reply only to sender unless it was the user
reply only to all people on the to line unless they were all the user
reply to all people on the cc line

The most common expected case is we just reply to sender, but if we reply to
our own email then we reply to the whole to line.

Implementation details

Note we continue parsing addresses beyond the ones we reply to because
we want to make sure the from address is correct. (At the very least it
is the same as it would be if we replied to all.)

We overload the message variable in add_recipients_for_address_list so
if it is NULL we parse the address (looking for the users address)
but do not add to the message recipients list

We add the variable reply_to_all to the function chain to keep track
of whether we should reply to everyone.
---
 notmuch-reply.c |   38 +++++++++++++++++++++++++++-----------
 1 files changed, 27 insertions(+), 11 deletions(-)

diff --git a/notmuch-reply.c b/notmuch-reply.c
index ab15650..3df3b52 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -191,7 +191,8 @@ add_recipients_for_address_list (GMimeMessage *message,
 		if (ret == NULL)
 		    ret = addr;
 	    } else {
-		g_mime_message_add_recipient (message, type, name, addr);
+		 if (message) 
+		      g_mime_message_add_recipient (message, type, name, addr);
 	    }
 	}
     }
@@ -271,7 +272,8 @@ reply_to_header_is_redundant (notmuch_message_t *message)
 static const char *
 add_recipients_from_message (GMimeMessage *reply,
 			     notmuch_config_t *config,
-			     notmuch_message_t *message)
+			     notmuch_message_t *message,
+			     int reply_to_all)
 {
     struct {
 	const char *header;
@@ -311,9 +313,20 @@ add_recipients_from_message (GMimeMessage *reply,
 	    recipients = notmuch_message_get_header (message,
 						     reply_to_map[i].fallback);
 
-	addr = add_recipients_for_string (reply, config,
-					  reply_to_map[i].recipient_type,
-					  recipients);
+
+	/* We add the addresses if we are replying to all or we have not yet found
+	 * a non-user address. We have to keep parsing to make sure we do find the 
+	 * correct from address for the user, but we pass a NULL message
+	 */
+	if ((reply_to_all) || (g_mime_message_get_all_recipients (reply) == NULL))
+	    addr = add_recipients_for_string (reply, config,
+					      reply_to_map[i].recipient_type,
+					      recipients);
+	else
+	     addr = add_recipients_for_string (NULL, config,
+					       reply_to_map[i].recipient_type,
+					       recipients);
+
 	if (from_addr == NULL)
 	    from_addr = addr;
     }
@@ -453,7 +466,7 @@ guess_from_received_header (notmuch_config_t *config, notmuch_message_t *message
 }
 
 static int
-notmuch_reply_format_default(void *ctx, notmuch_config_t *config, notmuch_query_t *query)
+notmuch_reply_format_default(void *ctx, notmuch_config_t *config, notmuch_query_t *query, int reply_to_all)
 {
     GMimeMessage *reply;
     notmuch_messages_t *messages;
@@ -484,7 +497,7 @@ notmuch_reply_format_default(void *ctx, notmuch_config_t *config, notmuch_query_
 	    g_mime_message_set_subject (reply, subject);
 	}
 
-	from_addr = add_recipients_from_message (reply, config, message);
+	from_addr = add_recipients_from_message (reply, config, message, reply_to_all);
 
 	if (from_addr == NULL)
 	    from_addr = guess_from_received_header (config, message);
@@ -531,7 +544,7 @@ notmuch_reply_format_default(void *ctx, notmuch_config_t *config, notmuch_query_
 
 /* This format is currently tuned for a git send-email --notmuch hook */
 static int
-notmuch_reply_format_headers_only(void *ctx, notmuch_config_t *config, notmuch_query_t *query)
+notmuch_reply_format_headers_only(void *ctx, notmuch_config_t *config, notmuch_query_t *query, int reply_to_all)
 {
     GMimeMessage *reply;
     notmuch_messages_t *messages;
@@ -571,7 +584,7 @@ notmuch_reply_format_headers_only(void *ctx, notmuch_config_t *config, notmuch_q
 	g_mime_object_set_header (GMIME_OBJECT (reply),
 				  "References", references);
 
-	(void)add_recipients_from_message (reply, config, message);
+	(void)add_recipients_from_message (reply, config, message, reply_to_all);
 
 	reply_headers = g_mime_object_to_string (GMIME_OBJECT (reply));
 	printf ("%s", reply_headers);
@@ -593,7 +606,8 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
     notmuch_query_t *query;
     char *opt, *query_string;
     int i, ret = 0;
-    int (*reply_format_func)(void *ctx, notmuch_config_t *config, notmuch_query_t *query);
+    int reply_to_all = 1;
+    int (*reply_format_func)(void *ctx, notmuch_config_t *config, notmuch_query_t *query, int reply_to_all);
 
     reply_format_func = notmuch_reply_format_default;
 
@@ -608,6 +622,8 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
 		reply_format_func = notmuch_reply_format_default;
 	    } else if (strcmp (opt, "headers-only") == 0) {
 		reply_format_func = notmuch_reply_format_headers_only;
+	    } else if (strcmp (opt, "one") == 0) {
+		reply_to_all = 0;
 	    } else {
 		fprintf (stderr, "Invalid value for --format: %s\n", opt);
 		return 1;
@@ -647,7 +663,7 @@ notmuch_reply_command (void *ctx, int argc, char *argv[])
 	return 1;
     }
 
-    if (reply_format_func (ctx, config, query) != 0)
+    if (reply_format_func (ctx, config, query, reply_to_all) != 0)
 	return 1;
 
     notmuch_query_destroy (query);
-- 
1.7.2.5