PerlB            2123 third_party/re2/re2/parse.cc         if ((ps.flags() & Regexp::PerlB) &&
PerlB             182 third_party/re2/re2/re2.cc     flags |= Regexp::PerlB;
PerlB             305 third_party/re2/re2/regexp.h     LikePerl     = ClassNL | OneLine | PerlClasses | PerlB | PerlX |