http://www.perlmonks.org?node_id=23332

Use code2html
to syntax-highlight and HTML-ify your code before posting to
'Monks, etc. This is a perl one-liner to work with code2html
utilizing Win32::Clipboard to transmogrify the code without writing
files which then would have to be opened, copied, etc.

perl -"MWin32::Clipboard" -e "$tmp=$ENV{'TEMP'};
$tmp.='\tmpcode2html'; $tmp=~s#\\#\\\\#g;
$clp=Win32::Clipboard(); $it=$clp->Get(); open(CH,\"^|perl -S
code2html -v -lperl -ohtml-dark ^>$tmp\") or die $!;
print CH $it; close CH; $tmp=~s#\\\\#/#g; open(TF,$tmp);
read(TF,$it,(-s $tmp));$clp->Set($it); unlink $tmp;"

Please note that this looks all wrong to UNI* gurus who see the quoting through typical shell rules that apply there; Win is different and there's a couple of not-well-known Windoze shell escaping tricks demonstrated in this code, as well.

Also shows how to open a pipe to a process to be written to by Perl, has the ugly kludge of writing a tmp file -- if anyone knows a *Windoze*-workable way to avoid this please comment.