ESC_REF           976 srclib/pcre/pcre.c         c = -(ESC_REF + c);
ESC_REF          3815 srclib/pcre/pcre.c       if (-c >= ESC_REF)
ESC_REF          3817 srclib/pcre/pcre.c         int number = -c - ESC_REF;
ESC_REF          4678 srclib/pcre/pcre.c     if (c <= -ESC_REF)
ESC_REF          4680 srclib/pcre/pcre.c       int refnum = -c - ESC_REF;