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ttt|��}W |S ty< Y dS w ) a Query the version of the currently installed Subversion client.
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zSubversion.get_vcs_versionc C s& | j sdgS | �� }|dkrdgS g S )aC Return options to be used on calls to Subversion that contact the server.
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:return: A list of command line arguments to pass to ``svn``.
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