is_anchored      4195 srclib/pcre/pcre.c      if (!is_anchored(scode, options, new_map, backref_map)) return FALSE;
is_anchored      4202 srclib/pcre/pcre.c      if (!is_anchored(scode, options, bracket_map, backref_map)) return FALSE;
is_anchored      5557 srclib/pcre/pcre.c   if (is_anchored(codestart, &temp_options, 0, compile_block.backref_map))