assertThat("\ufeff".map()).isEqualTo("")
  }

  @Test fun disallowed() {
    assertThat("\u0080".mapExpectingErrors()).isEqualTo("\u0080")
  }

  @Test fun disallowedStd3Valid() {
    assertThat("_".map()).isEqualTo("_")
    assertThat("/".map()).isEqualTo("/")
    assertThat("≠".map()).isEqualTo("≠")
  }

  @Test fun disallowedStd3Mapped() {