# the byte following the IAC is our command
command = text[position+1]
- # replace a double (literal) IAC if there's an LF later
+ # replace a double (literal) IAC if there's a CR+NUL or CR+LF later
if command is IAC:
- if text.find(b"\n", position) > 0:
+ if (
+ text.find(b"\r\0", position) > 0 or
+ text.find(b"\r\n", position) > 0):
position += 1
text = text[:position] + text[position + 1:]
else: