line_check
int line_check(REGEX *program, char *string, FLAG method);
if (line_check(program, line->text, FORWARD)) {
line_check(program, textp, FORWARD));
if (line_check(program, string + 1, method) == MATCH)
if (line_check(program, line->text, method) == MATCH) {
if (line_check(program, line->text, method) == MATCH)