old_contents: #!/usr/bin/env python
  #
  # Copyright 2013 The Rust Project Developers. See the COPYRIGHT
  # file at the top-level directory of this distribution and at
  # http://rust-lang.org/COPYRIGHT.
  #
  # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  # option. This file may not be copied, modified, or distributed
  # except according to those terms.
  """
  This script takes a list of keywords and generates a testcase, that checks
  if using the keyword as identifier fails, for every keyword. The generate
  test files are set read-only.
  Test for https://github.com/rust-lang/rust/issues/2275
  
  sample usage: src/etc/generate-keyword-tests.py as break
  """
  
  import sys
  import os
  import datetime
  import stat
  
  
  template = """// Copyright %d The Rust Project Developers. See the COPYRIGHT
  // file at the top-level directory of this distribution and at
  // http://rust-lang.org/COPYRIGHT.
  //
  // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  // option. This file may not be copied, modified, or distributed
  // except according to those terms.
  
  // This file was auto-generated using 'src/etc/generate-keyword-tests.py %s'
  
  fn main() {
      let %s = "foo"; //~ error: ident
  }
  """
  
  test_dir = os.path.abspath(
      os.path.join(os.path.dirname(__file__), '../test/compile-fail')
  )
  
  for kw in sys.argv[1:]:
      test_file = os.path.join(test_dir, 'keyword-%s-as-identifier.rs' % kw)
  
      # set write permission if file exists, so it can be changed
      if os.path.exists(test_file):
          os.chmod(test_file, stat.S_IWUSR)
  
      with open(test_file, 'wt') as f:
          f.write(template % (datetime.datetime.now().year, kw, kw))
  
      # mark file read-only
      os.chmod(test_file, stat.S_IRUSR|stat.S_IRGRP|stat.S_IROTH)
  
new_contents: #!/usr/bin/env python
  #
  # Copyright 2013 The Rust Project Developers. See the COPYRIGHT
  # file at the top-level directory of this distribution and at
  # http://rust-lang.org/COPYRIGHT.
  #
  # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  # option. This file may not be copied, modified, or distributed
  # except according to those terms.
  """
  This script takes a list of keywords and generates a testcase, that checks
  if using the keyword as identifier fails, for every keyword. The generate
  test files are set read-only.
  Test for https://github.com/rust-lang/rust/issues/2275
  
  sample usage: src/etc/generate-keyword-tests.py as break
  """
  
  import sys
  import os
  import datetime
  import stat
  
  
  template = """// Copyright %d The Rust Project Developers. See the COPYRIGHT
  // file at the top-level directory of this distribution and at
  // http://rust-lang.org/COPYRIGHT.
  //
  // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  // option. This file may not be copied, modified, or distributed
  // except according to those terms.
  
  // This file was auto-generated using 'src/etc/generate-keyword-tests.py %s'
  
  fn main() {
      let %s = "foo"; //~ error: ident
  }
  """
  
  test_dir = os.path.abspath(
      os.path.join(os.path.dirname(__file__), '../test/compile-fail')
  )
  
  for kw in sys.argv[1:]:
      test_file = os.path.join(test_dir, 'keyword-%s-as-identifier.rs' % kw)
  
      # set write permission if file exists, so it can be changed
      if os.path.exists(test_file):
          os.chmod(test_file, stat.S_IWUSR)
  
      with open(test_file, 'wt') as f:
          f.write(template % (datetime.datetime.now().year, kw, kw))
  
      # mark file read-only
      os.chmod(test_file, stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH)
  
subject: Fix PEP8 for generate-keyword-tests