telnet client enhancement proposal

Hi!


I recently came across an ancient issue related to the ambiguity in 
interpreting
the escape key in terminal applications. The problem lies in 
distinguishing the
escape key "\x1b" from ANSI escape sequences (e.g., "\x1b[A" for the up 
arrow).

Traditionally, this issue has been addressed by measuring the time gap 
between
receiving the initial escape character "\x1b" and the following "[A". If 
there
is a noticeable delay between them, they are considered as separate keys 
(ESC,
'[', and 'A'). Otherwise, they are treated as a single up arrow key 
press.

While this time-based approach works well for locally executed terminal
applications, telnet applications are still affected by network latency 
issues.

To tackle this, I suggest enabling the negotiation of the Telnet End of 
Record
Option in the Inetutils telnet client. Currently, the client does not 
seem to
support this option effectively. Although some handling exists in the 
source
code, it appears to be activated only when the TN3270 macro is defined.

If the telnet client could send an IAC EOR 2-octet sequence after each 
key
press, the ambiguity could be easily resolved, at least in character 
mode
transmission.


Erich