- lex_match (lexer, '=');
- if ((lex_token (lexer) == T_ID && dict_lookup_var (dataset_dict (ds), lex_tokid (lexer)) != NULL)
+ lex_match (lexer, T_EQUALS);
+ if ((lex_token (lexer) == T_ID
+ && dict_lookup_var (dataset_dict (ds), lex_tokcstr (lexer)) != NULL)