commit 7ac173c5ca6ff3ec48ba776321a38fb21980a0fc
Author: Rich Lane <rlane@club.cc.cmu.edu>
Date:   Sat Oct 3 11:19:08 2009 -0700

    nil msgid assertions

diff --git a/lib/sup/message.rb b/lib/sup/message.rb
index f9f87de..979597a 100644
--- a/lib/sup/message.rb
+++ b/lib/sup/message.rb
@@ -77,6 +77,8 @@ class Message
       id
     end
 
+    fail "nil msgid, header was #{header['message-id'].inspect}" unless @id
+
     @from = Person.from_address(if header["from"]
       header["from"]
     else
diff --git a/lib/sup/poll.rb b/lib/sup/poll.rb
index b59237f..d992a6c 100644
--- a/lib/sup/poll.rb
+++ b/lib/sup/poll.rb
@@ -143,6 +143,7 @@ EOS
         end
 
         m = Message.build_from_source source, offset
+        fail unless m.id
         m.labels += source_labels + (source.archived? ? [] : [:inbox])
         m.labels.delete :unread if m.source_marked_read? # preserve read status if possible
         m.labels.each { |l| LabelManager << l }
diff --git a/lib/sup/xapian_index.rb b/lib/sup/xapian_index.rb
index ab25ea0..91a5cc0 100644
--- a/lib/sup/xapian_index.rb
+++ b/lib/sup/xapian_index.rb
@@ -72,6 +72,7 @@ EOS
   end
 
   def build_message id
+    fail unless id
     entry = synchronize { get_entry id }
     return unless entry