CHAR_AMPERSAND   6710 ext/pcre/pcrelib/pcre_compile.c         if (*ptr == CHAR_R && ptr[1] == CHAR_AMPERSAND)
CHAR_AMPERSAND   7123 ext/pcre/pcrelib/pcre_compile.c         case CHAR_AMPERSAND:            /* Perl recursion/subroutine syntax */