exclude :test_both_textmode_binmode, "needs investigation"
exclude :test_cbuf, "needs investigation"
exclude :test_error_nonascii, "needs investigation"
exclude :test_getc_newlineconv_invalid, "needs investigation"
exclude :test_inspect_nonascii, "needs investigation"
exclude :test_open_pipe_r_enc2, "needs investigation"
exclude :test_puts_widechar, "needs investigation"
exclude :test_set_encoding_binmode, "needs investigation"
exclude :test_set_encoding_unsupported, "needs investigation"
exclude :test_stdin_external_encoding_with_reopen, "needs investigation"
exclude :test_undef_r, "needs investigation"
exclude :test_undef_w_stateful, "needs investigation"
exclude :test_undef_w_stateless, "needs investigation"
exclude :test_ungetc_int, "needs investigation"
exclude :test_strip_bom, "needs investigation"
