From c92aaef0e50fd3203ae188284744924ce3517ab3 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 17 Mar 2013 00:42:46 +0530
Subject: [PATCH] bzr segment: Handle repos with shelves correctly

Return None instead of a string with spaces for a clean repo with
shelves.
---
 powerline/lib/vcs/bzr.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/powerline/lib/vcs/bzr.py b/powerline/lib/vcs/bzr.py
index 89c22823..c243836f 100644
--- a/powerline/lib/vcs/bzr.py
+++ b/powerline/lib/vcs/bzr.py
@@ -53,7 +53,8 @@ class Repository(object):
 				dirtied = 'D'
 			elif line and line[0] == '?':
 				untracked = 'U'
-		return dirtied + untracked
+		ans = dirtied + untracked
+		return ans if ans.strip() else None
 
 	def branch(self):
 		try: