<oerjan> learn `edit <file> gives you a url, then in your browser: (1) Press Fetch (2) Make your changes (3) Press edit (4) Paste the command line at the top into the channel.

#!/bin/sh
print_args_or_input "$@" | perl -C7 -pe 'chomp; $_ = join(" ", map { sprintf "U+%x", ord } split //, $_);'