If you look at the thread the poster referred to, you'd see there's already a way of getting rid of the output: !.echo -q <text>.

It's usually useful when making $regsub() substitutions or $filefile() loop with a fourth (command/@window) parameter, because we're not always interested in the numeric values returned by them.

For example,
Code:
alias remhtml {
  ; //echo -a $remhtml(&lt;p&gt;text&lt;/p&gt;)
  var %a
  !.echo -q $regsub($1-,/&amp;\S+?;|^.*?&gt;|&lt;.*?&gt;|&lt;.*?$/g,,%a) 
  return %a
}
 
alias flist {
  ; /flist
  !.echo -q $findfile($mircdir,*,0,echo -a $1-)
}

For some reason, he doesn't like it. He wants an implementation of a new comamnd (or special prefix) which will evaluate the content and drop the output. Perhaps /nul or something.