diff --git a/Authors b/Authors
index 28b803e7..caab5f5e 100644
--- a/Authors
+++ b/Authors
@@ -28,6 +28,7 @@ Josh Kearney <josh@jk0.org>
 Justin Santa Barbara <justin@fathomdb.com>
 Justin Shepherd <jshepher@rackspace.com>
 Ken Pepple <ken.pepple@gmail.com>
+Ken Thomas <krt@yahoo-inc.com>
 Kevin L. Mitchell <kevin.mitchell@rackspace.com>
 Lorin Hochstein <lorin@isi.edu>
 Major Hayden <major@mhtx.net>
diff --git a/bin/glance b/bin/glance
index 883380a9..e11addd8 100755
--- a/bin/glance
+++ b/bin/glance
@@ -1000,6 +1000,10 @@ def user_confirm(prompt, default=False):
     else:
         prompt_default = "[y/N]"
 
+    # for bug 884116, don't issue the prompt if stdin isn't a tty
+    if not hasattr(sys.stdin, 'isatty') or not sys.stdin.isatty():
+        return default
+
     answer = raw_input("%s %s " % (prompt, prompt_default))
 
     if answer == "":