error.c: KeyError missing keyword arguments
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62053 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
error.c: KeyError missing keyword arguments
keyword arguments unset, so accessors can tell if it is missing
or explicit nil. [Feature #14313]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62053 b2dd03c8-39d4-4d8f-98ff-823fe69b080e