EN, mf, DO YOU SPEAK IT?

chrome/tools/build/apply_locales.py

 #!/usr/bin/env python
 # Copyright (c) 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.
 
 # TODO: remove this script when GYP has for loops
 
 import sys
 import optparse
 
 def main(argv):
 
   parser = optparse.OptionParser()
   usage = 'usage: %s [options ...] format_string locale_list'
   parser.set_usage(usage.replace('%s', '%prog'))
   parser.add_option('-d', dest='dash_to_underscore', action="store_true",
-                    default=False, help='map "-" to "_" in locales')
+                    default=False,
+                    help='map "en-US" to "en" and "-" to "_" in locales')
 
   (options, arglist) = parser.parse_args(argv)
 
   if len(arglist) < 3:
     print 'ERROR: need string and list of locales'
     return 1
 
   str_template = arglist[1]
   locales = arglist[2:]
 
   results = []
   for locale in locales:
     # For Cocoa to find the locale at runtime, it needs to use '_' instead
-    # of '-'.  (http://crbug.com/20441)
+    # of '-' (http://crbug.com/20441).  Also, 'en-US' should be represented
+    # simply as 'en' (http://crbug.com/19165, http://crbug.com/25578).
     if options.dash_to_underscore:
+      if locale == 'en-US':
+        locale = 'en'
       locale = locale.replace('-', '_')
     results.append(str_template.replace('ZZLOCALE', locale))
 
   # Quote each element so filename spaces don't mess up GYP's attempt to parse
   # it into a list.
   print ' '.join(["'%s'" % x for x in results])
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))