changeset:   90629:e57718ac8ff8
user:        Antoine Pitrou <solipsis@pitrou.net>
date:        Sun May 11 16:59:16 2014 +0200
files:       Lib/test/script_helper.py
description:
Try workaround for test issues in #21425


diff -r 02ffcf30e758 -r e57718ac8ff8 Lib/test/script_helper.py
--- a/Lib/test/script_helper.py	Sun May 11 16:36:22 2014 +0200
+++ b/Lib/test/script_helper.py	Sun May 11 16:59:16 2014 +0200
@@ -86,6 +86,14 @@
     """
     cmd_line = [sys.executable, '-E']
     cmd_line.extend(args)
+    # Under Fedora (?), GNU readline can output junk on stderr when initialized,
+    # depending on the TERM setting.  Setting TERM=vt100 is supposed to disable
+    # that.  References:
+    # - http://reinout.vanrees.org/weblog/2009/08/14/readline-invisible-character-hack.html
+    # - http://stackoverflow.com/questions/15760712/python-readline-module-prints-escape-character-during-import
+    # - http://lists.gnu.org/archive/html/bug-readline/2007-08/msg00004.html
+    env = kw.setdefault('env', {})
+    env.setdefault('TERM', 'vt100')
     return subprocess.Popen(cmd_line, stdin=subprocess.PIPE,
                             stdout=stdout, stderr=stderr,
                             **kw)