When you use ON PARSELINE to process outbound messages, $parseline has a hidden $LF as the last character.
on *:parseline:out:*:echo -s $parsetype $asc($right($parseline,1)) $parseline
As an example, "/LUSERS" produces:
out 83 10 LUSERS
[11:17:05] There are 1060 users and 805 invisible on 22 servers
[11:17:05] 27 operator(s) online
[11:17:05] 952 channels formed
[11:17:05] I have 167 clients and 1 servers
[11:17:05] Current Local Users: 167 Max: 276
[11:17:05] Current Global Users: 1865 Max: 2312
Note the blank line between the echo and the command output. This is not visible in mIRC but when you copy and paste into this forum it appears - it is the hidden $LF.