Method show_errors

src/common/CommandLine.cpp:158–177

}

bool CommandLine::show_errors(const char *context) {
	int errors = 0;
	if (!positional_used)
		for (auto &&po : positional) {
			printf("Positional argument '%s' %s\n", po, context ? context : "are not allowed");
			errors += 1;
		}
	for (auto &&op : options) {
		if (!op.used) {
			printf("Command line option %s %s\n", op.key.data,
			    !op.in_help ? "has no meaning (typo?)" : context ? context : "cannot be used in this context");
			errors += 1;
		}
		if (op.wrong_type_message) {
			printf("Command line option %s %s\n", op.key.data, op.wrong_type_message);
			errors += 1;
		}
	}
	return errors != 0;
}

static const char TOY_USAGE[] =
    R"(toy <version>.