From: Mike Koss <mckoss@startpad.org>
Date: Fri, 27 Apr 2012 11:16:28 +0000 (-0700)
Subject: fix bug when no help text given for option - wrap returns empty list
X-Git-Tag: v2.3.0~36^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd3ff7f89bdf509083cc18931b9f8e941490fbca;p=thirdparty%2Ftornado.git

fix bug when no help text given for option - wrap returns empty list
---

diff --git a/tornado/options.py b/tornado/options.py
index 5d20dcbf2..05e6f6f89 100644
--- a/tornado/options.py
+++ b/tornado/options.py
@@ -184,7 +184,7 @@ def print_help(file=sys.stdout):
             if option.default is not None and option.default != '':
                 description += " (default %s)" % option.default
             lines = textwrap.wrap(description, 79 - 35)
-            if len(prefix) > 30:
+            if len(prefix) > 30 or len(lines) == 0:
                 lines.insert(0, '')
             print >> file, "  --%-30s %s" % (prefix, lines[0])
             for line in lines[1:]: