kRegexpMissingBracket 1618 third_party/re2/re2/parse.cc     status->set_code(kRegexpMissingBracket);
kRegexpMissingBracket 1755 third_party/re2/re2/parse.cc     status->set_code(kRegexpMissingBracket);
kRegexpMissingBracket  104 third_party/re2/re2/re2.cc     case re2::kRegexpMissingBracket: