IDSET_ATTRSET_FOR_SYNTAX 313 symbol.c return rb_enc_symname_type(name, len, enc, IDSET_ATTRSET_FOR_SYNTAX) != -1; IDSET_ATTRSET_FOR_SYNTAX 1132 symbol.c return rb_str_symname_type(name, IDSET_ATTRSET_FOR_SYNTAX) == -1;