// ContainsRune reports whether the rune is contained in the UTF-8-encoded byte slice b.
func ContainsRune(b []byte, r rune) bool {
	return IndexRune(b, r) >= 0
}

// ContainsFunc reports whether any of the UTF-8-encoded code points r within b satisfy f(r).
func ContainsFunc(b []byte, f func(rune) bool) bool {
	return IndexFunc(b, f) >= 0
}

// IndexByte returns the index of the first instance of c in b, or -1 if c is not present in b.

			return
		}
		// Check for bad components in URL query values.
		for k, vv := range r.Form {
			if k == "delimiter" { // delimiters are allowed to have `.` or `..`
				continue
			}
			if slices.ContainsFunc(vv, hasBadPathComponent) {
				if ok {
					tc.FuncName = "handler.ValidRequest"
					tc.ResponseRecorder.LogErrBody = true
				}

				defer logger.AuditLog(r.Context(), w, r, mustGetClaimsFromToken(r))

				ct.b, ct.r, !ct.expected, ct.expected)
		}
	}
}

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

var makeFieldsInput = func() []byte {