[PATCH 1/3] query.cc: allow to return query results unsorted

[Sebastian Spaeth <Sebastian@SSpaeth.de>]

Previously, we always sorted the returned results by some string value,
(newest-to-oldest by default), however in some cases (as when applying
tags to a search result) we are not interested in any special order.

This introduces a NOTMUCH_SORT_UNSORTED value that does just that. It is
not used at the moment anywhere in the code.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
---
 lib/notmuch.h |    3 ++-
 lib/query.cc  |    2 ++
 2 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/lib/notmuch.h b/lib/notmuch.h
index a7e66dd..bae48a6 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -346,7 +346,8 @@ notmuch_query_create (notmuch_database_t *database,
 typedef enum {
     NOTMUCH_SORT_OLDEST_FIRST,
     NOTMUCH_SORT_NEWEST_FIRST,
-    NOTMUCH_SORT_MESSAGE_ID
+    NOTMUCH_SORT_MESSAGE_ID,
+    NOTMUCH_SORT_UNSORTED
 } notmuch_sort_t;
 
 /* Specify the sorting desired for this query. */
diff --git a/lib/query.cc b/lib/query.cc
index 10f8dc8..4148f9b 100644
--- a/lib/query.cc
+++ b/lib/query.cc
@@ -148,6 +148,8 @@ notmuch_query_search_messages (notmuch_query_t *query)
 	case NOTMUCH_SORT_MESSAGE_ID:
 	    enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE);
 	    break;
+        case NOTMUCH_SORT_UNSORTED:
+	    break;
 	}
 
 #if DEBUG_QUERY
-- 
1.7.0.4