When I designed the Klong language (http://t3x.org/klong/ http://t3x.org/klong/), the first version was a concatenative language. It still is internally! You ca

When I designed the Klong language (http://t3x.org/klong/ http://t3x.org/klong/), the first version was a concatenative language. It still is internally! You can see the translated program when starting the interpreter with the debug (-d) option. While concatenative style is really cool, I preferred the brevity of K syntax in the end.