class Guard::RSpecFormatter

def supported_fnmatch_flags(pattern)
  flags = File::FNM_PATHNAME | File::FNM_DOTMATCH
  # ruby >= 2
  return flags |= File::FNM_EXTGLOB if File.const_defined?(:FNM_EXTGLOB)
  raise Error::UnsupportedPattern if pattern =~ /[{}]/
  flags
end