Show HN: Space 4 Links

Category: library

Tags: interpreter, tcl-like, minimalist, c, educational

Score: 6.3/10 (Innovation: 5, Technical: 8, Documentation: 7, Utility: 5)

Picol is a minimalist Tcl-like interpreter implemented in C, originally in 500 lines and now at 669 lines. It demonstrates core interpreter design patterns like parsing, eval, and recursion with a Pratt-style expression parser, making it an instructive example for learning how interpreters work. The project is interesting for its balance of readability, compactness, and non-trivial functionality including procedures, scoping, and an interactive shell.

Target audience: programmers learning compilers or interpreters, embedded developers

Repository: https://space4links.com/ · C · 227 stars

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