From 333cb79a8c68f3c1edafc8349b3e228ee621e4f7 Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Jan 05 2015 09:13:25 +0000
Subject: When renaming a tag, do not add the tag if the issue already has it


---

diff --git a/progit/lib.py b/progit/lib.py
index 958c37b..3acfcac 100644
--- a/progit/lib.py
+++ b/progit/lib.py
@@ -261,18 +261,23 @@ def edit_issue_tags(session, project, old_tag, new_tag):
             session.add(tagobj)
 
         for issue in issues:
+            add = True
             # Drop the old tag
             for issue_tag in issue[0].tags:
                 if issue_tag.tag in old_tags:
                     tag = issue_tag.tag
                     session.delete(issue_tag)
-            # Add the new one
-            issue_tag = model.TagIssue(
-                issue_id=issue[0].id,
-                tag=new_tag
-            )
-            session.add(issue_tag)
-            msgs.append('Edited tag: %s to %s' % (old_tag, new_tag))
+                if issue_tag.tag == new_tag:
+                    add = False
+
+            if add:
+                # Add the new one
+                issue_tag = model.TagIssue(
+                    issue_id=issue[0].id,
+                    tag=new_tag
+                )
+                session.add(issue_tag)
+                msgs.append('Edited tag: %s to %s' % (old_tag, new_tag))
 
     return msgs