From 35731502688bd0abb902c02e89dbe421849ee5d5 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Thu, 25 Aug 2016 11:08:29 +0900
Subject: [PATCH] quickstart: do_prompt() allows empty string as default value

---
 sphinx/quickstart.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/quickstart.py b/sphinx/quickstart.py
index 789b57bd2..3621742e5 100644
--- a/sphinx/quickstart.py
+++ b/sphinx/quickstart.py
@@ -142,7 +142,7 @@ def term_decode(text):
 
 def do_prompt(d, key, text, default=None, validator=nonempty):
     while True:
-        if default:
+        if default is not None:
             prompt = PROMPT_PREFIX + '%s [%s]: ' % (text, default)
         else:
             prompt = PROMPT_PREFIX + text + ': '