From 219d90a5745d7d62b3fd1be0887be6f6202447f4 Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@tremily.us>
Date: Wed, 6 Feb 2013 16:55:15 -0500
Subject: [PATCH] ui.cli: Don't start the QuestionCommandLine with an empty
 stack

There's not much point in a question-answering shell if there are no
questions to be answered.
---
 quizzer/ui/cli.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/quizzer/ui/cli.py b/quizzer/ui/cli.py
index d2859cf..b799e1e 100644
--- a/quizzer/ui/cli.py
+++ b/quizzer/ui/cli.py
@@ -112,6 +112,8 @@ class QuestionCommandLine (_cmd.Cmd):
 
 class CommandLineInterface (UserInterface):
     def run(self):
+        if not self.stack:
+            return
         cmd = QuestionCommandLine(ui=self)
         cmd.cmdloop()
         print()
-- 
2.26.2