From 387828c4356416278fdac8446c904fe4c5ad283d Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Tue, 17 Nov 2009 17:40:19 -0800
Subject: get_in_reply_to: Implement via the database, not by opening mail
 file.

This reduces our reliance on open message_file objects, (so is a step
toward fixing the "too many open files" bug), but more importantly, it
means we don't load a self-referencing in-reply-to header, (since we
weed those out before adding any replyto terms to the database).
---
 lib/thread.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/thread.cc')

diff --git a/lib/thread.cc b/lib/thread.cc
index 4411d64d..e38a5b2e 100644
--- a/lib/thread.cc
+++ b/lib/thread.cc
@@ -155,7 +155,7 @@ _resolve_thread_relationships (unused (notmuch_thread_t *thread))
     while ((node = *prev)) {
 	message = node->message;
 	in_reply_to = _notmuch_message_get_in_reply_to (message);
-	if (in_reply_to &&
+	if (in_reply_to && strlen (in_reply_to) &&
 	    g_hash_table_lookup_extended (thread->message_hash,
 					  in_reply_to, NULL,
 					  (void **) &parent))
-- 
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