From 5279016db44638df266d600ab01471e5d4301b08 Mon Sep 17 00:00:00 2001
From: Thomas Scholtes <thomas-scholtes@gmx.de>
Date: Thu, 11 Sep 2014 16:09:26 +0200
Subject: [PATCH] config: Add suport for 'key in config' syntax

We can use this instead of the cumbersome `config[key].exists()`.
---
 beets/util/confit.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/beets/util/confit.py b/beets/util/confit.py
index 4ffe68cea..16a484b78 100644
--- a/beets/util/confit.py
+++ b/beets/util/confit.py
@@ -220,6 +220,9 @@ class ConfigView(object):
         """
         self.set({key: value})
 
+    def __contains__(self, key):
+        return self[key].exists()
+
     def set_args(self, namespace):
         """Overlay parsed command-line arguments, generated by a library
         like argparse or optparse, onto this view's value.