#compdef telnet

_arguments -s \
  -{F,f,x} \
  '-8[allow 8-Bit data]' \
  '-E[disable an escape character]' \
  '-K[no automatic login]' \
  '-L[allow 8-Bit data on output]' \
  '-S+:IP type-of-service:' \
  '-X+:authentication type to disable:' \
  '-a[attempt automatic login]' \
  '-c[disable .telnetrc]' \
  '-d[debug mode]' \
  '-e+[specify escape character]:escape character:' \
  '-k+:realm:' \
  '-l+[specify user]:user:' \
  '-n+[specify tracefile]:tracefile:_files' \
  '-r[rlogin like user interface]' \
  ':host:_hosts' \
  ':port:{ _hostports $line[2] "$expl[@]" }'