{"a☺b☻c☹d", 'x', false},
	{"a☺b☻c☹d", '☻', true},
	{"aRegExp*", '*', true},
}

func TestContainsRune(t *testing.T) {
	for _, ct := range ContainsRuneTests {
		if ContainsRune(ct.str, ct.r) != ct.expected {
			t.Errorf("ContainsRune(%q, %q) = %v, want %v",
				ct.str, ct.r, !ct.expected, ct.expected)
		}
	}
}

func TestContainsFunc(t *testing.T) {
	for _, ct := range ContainsRuneTests {

	{[]byte("a☺b☻c☹d"), '☻', true},
	{[]byte("aRegExp*"), '*', true},
}

func TestContainsRune(t *testing.T) {
	for _, ct := range ContainsRuneTests {
		if ContainsRune(ct.b, ct.r) != ct.expected {
			t.Errorf("ContainsRune(%q, %q) = %v, want %v",
				ct.b, ct.r, !ct.expected, ct.expected)
		}
	}
}

func TestContainsFunc(t *testing.T) {
	for _, ct := range ContainsRuneTests {

				chars = "0123456789ABCDEF"
			default:
				pattern = "PTR"
				chars = "0123456789abcdefABCDEF"
			}
			p := s[:i] + pattern
			for j := i; j < len(s); j++ {
				if !strings.ContainsRune(chars, rune(s[j])) {
					p += s[j:]
					break
				}
			}
			s = p
		}
		if s != tt.out {
			if _, ok := tt.val.(string); ok {
				// Don't requote the already-quoted strings.

			if r < utf8.RuneSelf {
				const allowed = "!#$%&()+,-.=@^_{}~ "
				if '0' <= r && r <= '9' ||
					'a' <= r && r <= 'z' ||
					'A' <= r && r <= 'Z' {
					return r
				}
				if strings.ContainsRune(allowed, r) {
					return r
				}
			} else if unicode.IsLetter(r) || unicode.IsNumber(r) {
				return r
			}
			return -1
		}
		pattern := strings.Map(mapper, c.Name())