Function normalize_output

Lib/test/test_pty.py:46–64

(data)

# and normalize_output can be used.

def normalize_output(data):
    # Some operating systems do conversions on newline.  We could possibly fix
    # that by doing the appropriate termios.tcsetattr()s.  I couldn't figure out
    # the right combo on Tru64.  So, just normalize the output and doc the
    # problem O/Ses by allowing certain combinations for some platforms, but
    # avoid allowing other differences (like extra whitespace, trailing garbage,
    # etc.)

    # This is about the best we can do without getting some feedback
    # from someone more knowledgable.

    # OSF/1 (Tru64) apparently turns \n into \r\r\n.
    if data.endswith(b'\r\r\n'):
        return data.replace(b'\r\r\n', b'\n')

    if data.endswith(b'\r\n'):
        return data.replace(b'\r\n', b'\n')

    return data

def _readline(fd):
    """Read one line.  May block forever if no newline is read."""