From 186929d217a1e9fbee1ec40f800e6fe0904a6a53 Mon Sep 17 00:00:00 2001
From: Jarrod Johnson <jjohnson2@lenovo.com>
Date: Fri, 26 Jun 2015 15:26:44 -0400
Subject: [PATCH] Only conditionally import readline

If stdout is not a tty, do not import readline.  import
readline by itself can cause terminal control characters
to appear in the stdout.  Avoid this by only importing if
there seems to be a sign it is connected to a terminal.
---
 confluent_client/bin/confetty | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/confluent_client/bin/confetty b/confluent_client/bin/confetty
index 2e65054c..8cbdaa29 100755
--- a/confluent_client/bin/confetty
+++ b/confluent_client/bin/confetty
@@ -46,7 +46,6 @@ import math
 import getpass
 import optparse
 import os
-import readline
 import select
 import shlex
 import socket
@@ -601,9 +600,11 @@ except socket.gaierror:
 # sys.stdout.write('\x1b[H\x1b[J')
 # sys.stdout.flush()
 
-readline.parse_and_bind("tab: complete")
-readline.parse_and_bind("set bell-style none")
-readline.set_completer(completer)
+if sys.stdout.isatty():
+	import readline
+	readline.parse_and_bind("tab: complete")
+	readline.parse_and_bind("set bell-style none")
+	readline.set_completer(completer)
 doexit = False
 inconsole = False
 pendingcommand = ""