From ab9f17b05365f90be456d87a9c1d1a437c1f1cb1 Mon Sep 17 00:00:00 2001
From: Simon Doppler <dopsi+gitkraken@dopsi.ch>
Date: Mon, 22 Jan 2018 16:05:34 +0100
Subject: [PATCH] Use default value for dictionary item in tabs handler

---
 qutebrowser/browser/qutescheme.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/qutebrowser/browser/qutescheme.py b/qutebrowser/browser/qutescheme.py
index 57c32999b..c96578d18 100644
--- a/qutebrowser/browser/qutescheme.py
+++ b/qutebrowser/browser/qutescheme.py
@@ -30,6 +30,7 @@ import time
 import textwrap
 import mimetypes
 import urllib
+import collections
 
 import pkg_resources
 from PyQt5.QtCore import QUrlQuery, QUrl
@@ -208,10 +209,9 @@ def _tab_fields_to_tabs_page_info(fields):
 @add_handler('tabs')
 def qute_tabs(_url):
     """Handler for qute://tabs. Display information about all open tabs."""
-    tabs = {}
+    tabs = collections.defaultdict(list)
     for win_id in objreg.window_registry:
         win_id_str = str(win_id)
-        tabs[win_id_str] = []
         tabbed_browser = objreg.get('tabbed-browser',
                                     scope='window',
                                     window=win_id)