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Ben Gamari authored
Previously opsys would take any string. This meant it was very easy for a typo to silently render the predicate ineffective. Fix this by checking the given operating system name against a list of known values.
fe02f781
Previously opsys would take any string. This meant it was very easy for a typo to silently render the predicate ineffective. Fix this by checking the given operating system name against a list of known values.