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Class representing the list of files in a distribution.
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Process a directive which either adds some files from ``allfiles`` to
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compatible with distutils ``MANIFEST.in`` files:
http://docs.python.org/distutils/sourcedist.html#commands
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zManifest._parse_directiveTc C sT d}| j ||||�}| jdkr&| j� x(| jD ] }|j|�r.| jj|� d}q.W |S )a� Select strings (presumably filenames) from 'self.files' that
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