From 1a344ed0509dd48cd010af9be93b65482d16763a Mon Sep 17 00:00:00 2001
From: Star Brilliant <m13253@hotmail.com>
Date: Sun, 24 Nov 2013 17:07:14 +0800
Subject: [PATCH] Print usage when no arguments are passed

---
 danmaku2ass.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/danmaku2ass.py b/danmaku2ass.py
index 51d6587..f53c1b1 100755
--- a/danmaku2ass.py
+++ b/danmaku2ass.py
@@ -533,6 +533,8 @@ def GetCommentProcessor(input_file):
 
 
 def main():
+    if len(sys.argv) == 1:
+        sys.argv.append('--help')
     parser = argparse.ArgumentParser()
     parser.add_argument('-o', '--output', metavar=_('OUTPUT'), help=_('Output file'))
     parser.add_argument('-s', '--size', metavar=_('WIDTHxHEIGHT'), required=True, help=_('Stage size in pixels'))