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Substituting "/dev/null/nonexistent" for an empty $Connection, of course, does generally work, but is somewhat ugly (esp. in that the string is appended to $CONN_DIR, so the resulting path may theoretically exist). Instead, substitute an empty string for the complete path if $Connection is empty: an empty string can never be readable. Signed-off-by: Ivan Shapovalov <intelfx100@gmail.com>
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