From 7ebc54171c9612b78e59d8012c0d8c1b70f78431 Mon Sep 17 00:00:00 2001
From: tbeswick <tbeswick@enphaseenergy.com>
Date: Fri, 11 Oct 2019 17:15:35 +1300
Subject: [PATCH] Fixed missing return statement in
 `Mercurial.controls_location()`, it only got found after reverting
 `VersionControl.controls_location()`

---
 src/pip/_internal/vcs/mercurial.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pip/_internal/vcs/mercurial.py b/src/pip/_internal/vcs/mercurial.py
index bc4b19c7294..d9b58cfe9a4 100644
--- a/src/pip/_internal/vcs/mercurial.py
+++ b/src/pip/_internal/vcs/mercurial.py
@@ -147,6 +147,7 @@ def controls_location(cls, location):
                 show_stdout=False,
                 on_returncode='raise',
                 log_failed_cmd=False)
+            return True
         except (BadCommand, InstallationError):
             return False