[catdog]

Totally agree, the concept is nice and really useful but its implementation is for a large part really a big pile of fragile and confusing hacks. Most of the power comes of powerful tools like find, sed, awk (being a programming language on its own), etc. The language gluing them together is nicely compact but apart from that very disappointing. Also the everything is a string approach has its limitations. A python script may sometimes be longer but a lot less riddled with annoying corner cases.