[PATCH] lib: index the content-type of the parts of encrypted messages

[Daniel Kahn Gillmor <dkg@fifthhorseman.net>]

This is a logical followup to "lib: index the content type of
signature parts", which will make it easier to record the message
structure of all messages.
---
 lib/index.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/index.cc b/lib/index.cc
index 0beaae62..ceb444df 100644
--- a/lib/index.cc
+++ b/lib/index.cc
@@ -409,7 +409,14 @@ _index_mime_part (notmuch_message_t *message,
 		}
 	    }
 	    if (GMIME_IS_MULTIPART_ENCRYPTED (multipart)) {
-		/* Don't index encrypted parts. */
+		/* Don't index encrypted parts, but index their content type. */
+		_index_content_type (message,
+				     g_mime_multipart_get_part (multipart, i));
+		if ((i != GMIME_MULTIPART_ENCRYPTED_VERSION) &&
+		    (i != GMIME_MULTIPART_ENCRYPTED_CONTENT)) {
+		    _notmuch_database_log (_notmuch_message_database (message),
+					   "Warning: Unexpected extra parts of multipart/encrypted.\n");
+		}
 		continue;
 	    }
 	    _index_mime_part (message,
-- 
2.14.1