notmuch-reply date format

[Sime Ramov]

Hello,

I would like to customize the attribution string in the reply templates.
Something like this, with ISO date:

* Full Name <me at example.net> [2014-07-14 12:30 +0200]:

After the following trivial edit:

diff --git a/notmuch-reply.c b/notmuch-reply.c
index 7c1c809..eaf1eed 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -44,9 +44,9 @@ format_part_reply (mime_node_t *node)
     int i;
     if (node->envelope_file) {
-       printf ("On %s, %s wrote:\n",
-               notmuch_message_get_header (node->envelope_file, "date"),
-               notmuch_message_get_header (node->envelope_file, "from"));
+       printf ("* %s [%s]:\n",
+               notmuch_message_get_header (node->envelope_file, "from"),
+               notmuch_message_get_header (node->envelope_file, "date"));
     } else if (GMIME_IS_MESSAGE (node->part)) {
        GMimeMessage *message = GMIME_MESSAGE (node->part);
        InternetAddressList *recipients;

The (partial) result is this:

* Full Name <me at example.net> [Mon, 14 Jul 2014 12:30:36 +0200]:

Where would be the best place to `strftime` date? I snooped around in
lib/ source but haven't gotten far. Any ideas? Is it a Xapian thing?