<b_jonas> perl -e-e($o="bin/culprits-ng") and die; open$O,">",$o or die; print $O qq{#!/bin/sh\\n},q{exec hg log -l 512 --template "{desc}\\0" -- "$@" | perl -0ne \'/^<([^>]*)>/ and!$t{$1}++and print"$1 "\'}; close$O;chmod 0755,$o or die;

Esoteric languages. Usually refers to programming languages designed to be unique, difficult to program in, or just plain weird. See https://esolangs.org for more.