Adds saner behavior for git try -t foo to not fail in a inexplicable way. Enforces that each builde…

presubmit_support.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.6.1'
 
@@ skipping 908 matching lines @@
       if not isinstance(result, types.ListType):
         raise PresubmitFailure(
             'Presubmit functions must return a list, got a %s instead: %s' %
             (type(result), str(result)))
       for item in result:
         if not isinstance(item, basestring):
           raise PresubmitFailure('All try slaves names must be strings.')
         if item != item.strip():
           raise PresubmitFailure(
               'Try slave names cannot start/end with whitespace')
+        if ',' in item:
+          raise PresubmitFailure(
+              'Do not use \',\' separated builder or test names: %s' % item)
     else:
       result = []
     return result
 
 
 def DoGetTrySlaves(change,
                    changed_files,
                    repository_root,
                    default_presubmit,
                    project,
@@ skipping 326 matching lines @@
   except PresubmitFailure, e:
     print >> sys.stderr, e
     print >> sys.stderr, 'Maybe your depot_tools is out of date?'
     print >> sys.stderr, 'If all fails, contact maruel@'
     return 2
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(Main(None))