From 25f5afd39fb4b32dc68c0c3f72744ddef6a503cd Mon Sep 17 00:00:00 2001
From: Thomas Kluyver <takowl@gmail.com>
Date: Wed, 10 Jun 2015 14:39:38 -0700
Subject: [PATCH] Die immediately on SIGINT if not in a tty

Closes gh-146
---
 notebook/notebookapp.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/notebook/notebookapp.py b/notebook/notebookapp.py
index 9e29aa280..4503eee60 100644
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@@ -894,7 +894,7 @@ class NotebookApp(JupyterApp):
             log("Terminals not available (error was %s)", e)
 
     def init_signal(self):
-        if not sys.platform.startswith('win'):
+        if not sys.platform.startswith('win') and sys.stdin.isatty():
             signal.signal(signal.SIGINT, self._handle_sigint)
         signal.signal(signal.SIGTERM, self._signal_stop)
         if hasattr(signal, 'SIGUSR1'):