B `3H@sdZddlZddlZddlZddlmZmZddlmZe dZ e ddeDZ d d Z d d Z d dZddZddZddZddZddZGdddeZGdddeZGdddZGdd d ZdS)!z$Adjustments are tunable parameters. N)HAS_IPV6WIN) PROXY_HEADERS)ttrueyyeson1ccs|]}|ddVqdS)_-N)lowerreplace).0headerr\/home/kop/projects/devel/pgwui/test_venv/lib/python3.7/site-packages/waitress/adjustments.py srcCs2|dkr dSt|tr|St|}|tkS)aGReturn the boolean value ``True`` if the case-lowered value of string input ``s`` is any of ``t``, ``true``, ``y``, ``on``, or ``1``, otherwise return the boolean value ``False``. If ``s`` is the value ``None``, return ``False``. 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