/* Test whether ERE optionals work. */

#include "suite.h"

int main(void)
{
	cflags = REG_EXTENDED;

	reject("a?ab?", "");
	match("a?ab?", "a");
	reject("a?ab?", "b");
	partial("a?ab?", "aa", m(0, 2));
	partial("a?ab?", "ab", m(0, 2));
	partial("a?ab?", "ba", m(1, 2));
	reject("a?ab?", "bb");
	partial("a?ab?", "aaa", m(0, 2));
	partial("a?ab?", "aab", m(0, 3));
	partial("a?ab?", "aba", m(0, 2));
	partial("a?ab?", "abb", m(0, 2));
	partial("a?ab?", "baa", m(1, 3));
	partial("a?ab?", "bab", m(1, 3));
	partial("a?ab?", "bba", m(2, 3));
	reject("a?ab?", "bbb");

	return 0;
}