Unknown option: "-3" Unix manual page for CURLOPT_TELNETOPTIONS. (host=minya system=Darwin)
CURLOPT_TELNETOPTIONS(3)   curl_easy_setopt options   CURLOPT_TELNETOPTIONS(3)

NAME
       CURLOPT_TELNETOPTIONS - custom telnet options

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TELNETOPTIONS,
                                 struct curl_slist *cmds);

DESCRIPTION
       Provide  a pointer to a curl_slist with variables to pass to the telnet
       negotiations. The variables should be  in  the  format  <option=value>.
       libcurl supports the options 'TTYPE', 'XDISPLOC' and 'NEW_ENV'. See the
       TELNET standard for details.

DEFAULT
       NULL

PROTOCOLS
       TELNET

EXAMPLE
       TODO

AVAILABILITY
       Along with TELNET

RETURN VALUE
       Returns CURLE_OK if TELNET is supported,  and  CURLE_UNKNOWN_OPTION  if
       not.

SEE ALSO
       CURLOPT_HTTPHEADER(3), CURLOPT_QUOTE(3),

libcurl 7.54.0                 February 03, 2016      CURLOPT_TELNETOPTIONS(3)