From d5a07dcdb30c302813eaae55faa93569410710d6 Mon Sep 17 00:00:00 2001
From: Aaron Boman <aaron@aaronboman.com>
Date: Sat, 8 Oct 2016 17:09:33 -0500
Subject: [PATCH] Fix get_invocation_command_nodefault().

It was possible for command to be None. Thus, calling ' '.join(None) directly
would error out.
---
 src/tools/common.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/tools/common.py b/src/tools/common.py
index 18ea0542b..8bf33a063 100644
--- a/src/tools/common.py
+++ b/src/tools/common.py
@@ -314,9 +314,8 @@ def get_invocation_command_nodefault(
             #FIXME
             #ECHO "warning: initialized from" [ errors.nearest-user-location ]
             command = []
-        command = ' '.join(command)
-
-    assert(isinstance(command, str))
+        if command:
+            command = ' '.join(command)
 
     return command