Ruby

Regexp#match{?} with nil raises TypeError as String, Symbol (#1506)

• {String|Symbol}#match{?} with nil returns falsy

To improve consistency with Regexp#match{?}

• String#match(nil) returns nil instead of TypeError

• String#match?(nil) returns false instead of TypeError

• Symbol#match(nil) returns nil instead of TypeError

• Symbol#match?(nil) returns false instead of TypeError

• Prefer exception

• Follow empty ENV

• Drop outdated specs

• Write ruby/spec for above

https://github.com/ruby/ruby/pull/1506/files#r183242981

• Fix merge miss