From 61c22fd77378a44a5c19a9492d48f5c5cd396540 Mon Sep 17 00:00:00 2001
From: Will McGugan <willmcgugan@gmail.com>
Date: Tue, 22 Aug 2017 16:39:54 +0100
Subject: [PATCH] make FS URL with no protocol equivlenet to default opener

---
 fs/opener/registry.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/opener/registry.py b/fs/opener/registry.py
index 32151b61..2641649c 100644
--- a/fs/opener/registry.py
+++ b/fs/opener/registry.py
@@ -123,6 +123,7 @@ def get_opener(self, protocol):
             successfully.
 
         """
+        protocol = protocol or self.default_opener
         entry_point = next(
             pkg_resources.iter_entry_points('fs.opener', protocol),
             None