# Arguments are not modified.
[-Subroutines::RequireArgUnpacking]

# The expressions are pretty short and understandable.
[-RegularExpressions::RequireExtendedFormatting]

# drhtz() and drhfz() intentionally compare strings numerically.
[-ValuesAndExpressions::ProhibitMismatchedOperators]

# Maybe it's not idiomatic, but I disagree with these.
[-ValuesAndExpressions::ProhibitEmptyQuotes]
[-ValuesAndExpressions::ProhibitNoisyQuotes]

# There are no dots.
[-RegularExpressions::RequireDotMatchAnything]