From 07515ff8b05ea3795fd296e6e29ff1b8d548b47c Mon Sep 17 00:00:00 2001
From: Patrick Maia and Victor Shyba
 <pixelated-team+pmaia+vshyba@thoughtworks.com>
Date: Sun, 7 Sep 2014 23:18:04 +0000
Subject: #51 - removes tag from the index when it is not being used anymore

---
 service/pixelated/adapter/pixelated_mailbox.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'service/pixelated/adapter')

diff --git a/service/pixelated/adapter/pixelated_mailbox.py b/service/pixelated/adapter/pixelated_mailbox.py
index a5b07660..2723dfc1 100644
--- a/service/pixelated/adapter/pixelated_mailbox.py
+++ b/service/pixelated/adapter/pixelated_mailbox.py
@@ -61,7 +61,10 @@ class PixelatedMailbox:
         for removed_tag in removed_tags:
             tag = self.tag_index.get(removed_tag)
             tag.decrement(mail_ident)
-            self.tag_index.set(tag)
+            if tag.total == 0:
+                self.tag_index.remove(tag.name)
+            else:
+                self.tag_index.set(tag)
         for added_tag in added_tags:
             tag = self.tag_index.get(added_tag) or Tag(added_tag)
             tag.increment(mail_ident)
-- 
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