<hppavilion[1]> le/rn Rogue One//Any regular who gives the slightest Rogue One spoiler shall be hunted down in real life and have their intestines removed through their eye sockets. Members would not be exempt if they existed, which they don\'t.

sep="//"
[[ "$1" == ?*"$sep"* ]] || exit 1
topic="$(echo "${1%%$sep*}" | lowercase)"
stuff="${1#*$sep}"
perl -i -p -e 's/\n/ /' "wisdom/$topic"
echo "$stuff" >>"wisdom/$topic"
echo -n "Learned '$topic': "
cat "wisdom/$topic"