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from warnings import warn
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import bzrlib
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from bzrlib import bzrdir, errors, lockdir, osutils, revision, \
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        tree, \
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        ui, \
 
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from bzrlib import (
 
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        bzrdir, 
 
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        errors, 
 
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        lockdir, 
 
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        osutils, 
 
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        revision,
 
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        transport,
 
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        tree,
 
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        ui,
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        urlutils
 
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        )
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from bzrlib.config import TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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import bzrlib.errors as errors
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                                      zero_eight, zero_nine,
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                                      )
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from bzrlib.trace import mutter, note
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from bzrlib import transport
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"