Error message is CRLF terminated

[mailing4362 at runbox.com]

Hello,

scripting in Bash with ssh remote command, I figured out, that ssh error
message is CRLF terminated:

$ ssh -V
OpenSSH_7.4p1 Debian-10+deb9u1, OpenSSL 1.0.2l  25 May 2017

$ ssh foo_bar_host 2>error_msg.txt

$ vi -b error_msg.txt

ssh: Could not resolve hostname foo_bar_host: Name or service not known^M

(^M at the end of line indicates CRLF EOL). So I needed to do a

tr -d '\r'

on the error output to make sed regular expression $ working again.
Because with the CRLF EOL above

sed -e 's#$#append_something#'

does not work, the EOL is not found by sed when there is CRLF EOL.

So I am wondering why there is CRLF EOL. Not helpful on Unix machines.


Here is already the same question asked 13 years ago, not yet been
answered, unfortunately:

"Why are error messages CRLF terminated?"
https://marc.info/?l=openssh-unix-dev&m=108378631808225&w=2