old_contents: #!/usr/bin/env python
  #
  # __COPYRIGHT__
  #
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  #
  # The above copyright notice and this permission notice shall be included
  # in all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  #
  __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
  
  """
  Verify basic operation of the --interactive command line option to build
  a target, rebuild it when the input changes, and not rebuild it when
  the input doesn't change.
  
  Also tests that "scons" can be used as a synonym for "build".
  """
  
  import TestSCons
  
  test = TestSCons.TestSCons()
  
  test.write('SConstruct', """\
  Command('foo.out', 'foo.in', Copy('$TARGET', '$SOURCE'))
  Command('1', [], Touch('$TARGET'))
  Command('2', [], Touch('$TARGET'))
  """)
  
  test.write('foo.in', "foo.in 1\n")
  
  
  
  scons = test.start(arguments = '-Q --interactive')
  
  scons.send("build foo.out\n")
  
  scons.send("build 1\n")
  
  test.wait_for(test.workpath('1'))
  
  test.must_match(test.workpath('foo.out'), "foo.in 1\n")
  
  
  
  test.write('foo.in', "foo.in 2\n")
  
  scons.send("build --tree=all foo.out\n")
  
  scons.send("scons 2\n")
  
  test.wait_for(test.workpath('2'))
  
  test.must_match(test.workpath('foo.out'), "foo.in 2\n")
  
  
  
  scons.send("build --debug=tree foo.out\n")
  
  expect_stdout = """\
  scons>>> Copy("foo.out", "foo.in")
  scons>>> Touch("1")
  scons>>> Copy("foo.out", "foo.in")
  +-foo.out
    +-foo.in
  scons>>> Touch("2")
  scons>>> scons: `foo.out' is up to date.
  +-foo.out
    +-foo.in
  scons>>> 
  """
  
  test.finish(scons, stdout = expect_stdout)
  
  
  
  test.pass_test()
  
new_contents: #!/usr/bin/env python
  #
  # __COPYRIGHT__
  #
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  #
  # The above copyright notice and this permission notice shall be included
  # in all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  #
  __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
  
  """
  Verify basic operation of the --interactive command line option to build
  a target, rebuild it when the input changes, and not rebuild it when
  the input doesn't change.
  
  Also tests that "scons" can be used as a synonym for "build".
  """
  
  import TestSCons
  
  test = TestSCons.TestSCons()
  
  test.write('SConstruct', """\
  Command('foo.out', 'foo.in', Copy('$TARGET', '$SOURCE'))
  Command('1', [], Touch('$TARGET'))
  Command('2', [], Touch('$TARGET'))
  """)
  
  test.write('foo.in', "foo.in 1\n")
  
  
  
  scons = test.start(arguments = '-Q --interactive')
  
  scons.send("build foo.out\n")
  
  scons.send("build 1\n")
  
  test.wait_for(test.workpath('1'))
  
  test.must_match(test.workpath('foo.out'), "foo.in 1\n")
  
  
  
  test.write('foo.in', "foo.in 2\n")
  
  scons.send("build --tree=all foo.out\n")
  
  scons.send("scons 2\n")
  
  test.wait_for(test.workpath('2'))
  
  test.must_match(test.workpath('foo.out'), "foo.in 2\n")
  
  
  
  scons.send("build --debug=tree foo.out\n")
  
  expect_stdout = """\
  scons>>> Copy("foo.out", "foo.in")
  scons>>> Touch("1")
  scons>>> Copy("foo.out", "foo.in")
  +-foo.out
    +-foo.in
  scons>>> Touch("2")
  scons>>> scons: `foo.out' is up to date.
  scons>>> 
  """
  
  test.finish(scons, stdout = expect_stdout)
  
  
  
  test.pass_test()
  
subject: Update the test/Interactive/tree.py script for Benoit's fix to remove duplicate tree printing.