To quote the original article,

Posted Mar 19, 2009 1:00 UTC (Thu) by atai (subscriber, #10977)
In reply to: Too verbose by man_ls
Parent article: The Squirrel portable shell and scripting language (developerWorks)

Squirrel Shell isn't much of an interactive shell, but that's okay. There are many alternatives in that category already. Squirrel Shell is far better as a script runner. Its data structures are more capable than a traditional shell, it's syntax is familiar, and its underlying virtual engine supports everything from enumerated types to threads. The Squirrel engine is also tiny, at less than 6000 lines of code. You can even embed all of Squirrel in another application.