Allow gcl help to be run from anywhere...

gcl.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """\
 Wrapper script around Rietveld's upload.py that simplifies working with groups
 of files.
 """
 
@@ skipping 1275 matching lines @@
   print sys.modules[__name__].__doc__
   print 'version ' + __version__ + '\n'
 
   print('Commands are:\n' + '\n'.join([
         '  %-12s %s' % (fn[3:], Command(fn[3:]).__doc__.split('\n')[0].strip())
         for fn in dir(sys.modules[__name__]) if fn.startswith('CMD')]))
   return 0
 
 
 def main(argv):
+  if not argv:
+    argv = ['help']
+  command = Command(argv[0])
+  # Help can be run from anywhere.
+  if command == CMDhelp:
+    return command(argv[1:])
+
   try:
     GetRepositoryRoot()
   except gclient_utils.Error:
     print('To use gcl, you need to be in a subversion checkout.')
     return 1
 
   # Create the directories where we store information about changelists if it
   # doesn't exist.
   if not os.path.exists(GetInfoDir()):
     os.mkdir(GetInfoDir())
   if not os.path.exists(GetChangesDir()):
     os.mkdir(GetChangesDir())
   if not os.path.exists(GetCacheDir()):
     os.mkdir(GetCacheDir())
 
-  if not argv:
-    argv = ['help']
-  command = Command(argv[0])
   if command:
     return command(argv[1:])
   # Unknown command, try to pass that to svn
   return CMDpassthru(argv)
 
 
 if __name__ == "__main__":
   sys.exit(main(sys.argv[1:]))