This makes presubmit queries accept "yes" as well as "y"

depot_tools/presubmit_support.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.
 
 """Enables directory-specific presubmit checks to run at upload and/or commit.
 """
 
 __version__ = '1.3.3'
 
@@ skipping 45 matching lines @@
 
 def normpath(path):
   '''Version of os.path.normpath that also changes backward slashes to
   forward slashes when not running on Windows.
   '''
   # This is safe to always do because the Windows version of os.path.normpath
   # will replace forward slashes with backward slashes.
   path = path.replace(os.sep, '/')
   return os.path.normpath(path)
 
+def PromptYesNo(input_stream, output_stream, prompt):
+  output_stream.write(prompt)
+  response = input_stream.readline().strip().lower()
+  return response == 'y' or response == 'yes'
 
 class OutputApi(object):
   """This class (more like a module) gets passed to presubmit scripts so that
   they can specify various types of results.
   """
 
   class PresubmitResult(object):
     """Base class for result objects."""
 
     def __init__(self, message, items=None, long_text=''):
@@ skipping 19 matching lines @@
       """
       output_stream.write(self._message)
       output_stream.write('\n')
       for item in self._items:
         output_stream.write('  %s\n' % str(item))
       if self._long_text:
         output_stream.write('\n***************\n%s\n***************\n' %
                             self._long_text)
 
       if self.ShouldPrompt() and may_prompt:
-        output_stream.write('Are you sure you want to continue? (y/N): ')
-        response = input_stream.readline()
-        if response.strip().lower() != 'y':
+        if not PromptYesNo(input_stream, output_stream,
+                           'Are you sure you want to continue? (y/N): '):
           return False
 
       return not self.IsFatal()
 
     def IsFatal(self):
       """An error that is fatal stops g4 mail/submit immediately, i.e. before
       other presubmit scripts are run.
       """
       return False
 
@@ skipping 828 matching lines @@
         if not item._Handle(output_stream, input_stream,
                             may_prompt=False):
           error_count += 1
         output_stream.write('\n')
 
   total_time = time.time() - start_time
   if total_time > 1.0:
     print "Presubmit checks took %.1fs to calculate." % total_time
 
   if not errors and warnings and may_prompt:
-    output_stream.write(
-      'There were presubmit warnings. Sure you want to continue? (y/N): ')
-    response = input_stream.readline()
-    if response.strip().lower() != 'y':
+    if not PromptYesNo(input_stream, output_stream,
+                       'There were presubmit warnings. '
+                       'Are you sure you wish to continue? (y/N): '):
       error_count += 1
 
   global _ASKED_FOR_FEEDBACK
   # Ask for feedback one time out of 5.
   if (len(results) and random.randint(0, 4) == 0 and not _ASKED_FOR_FEEDBACK):
     output_stream.write("Was the presubmit check useful? Please send feedback "
                         "& hate mail to maruel@chromium.org!\n")
     _ASKED_FOR_FEEDBACK = True
   return (error_count == 0)
 
@@ skipping 76 matching lines @@
                                options.commit,
                                options.verbose,
                                sys.stdout,
                                sys.stdin,
                                options.default_presubmit,
                                options.may_prompt)
 
 
 if __name__ == '__main__':
   sys.exit(Main(sys.argv))