assert (var_cnt > 0);
if (lex_is_number (lexer))
return fixed_parse_columns (lexer, pool, var_cnt, for_input, formats, format_cnt);
assert (var_cnt > 0);
if (lex_is_number (lexer))
return fixed_parse_columns (lexer, pool, var_cnt, for_input, formats, format_cnt);