Show HN: Metaspec: The DpANS3R Common Lisp Spec in S-Expr and HTML Format

The Metaspec project has successfully rendered the draft ANSI Common Lisp standard, revision 15.17R (X3J13/94-101R), into S-Expr and HTML formats, making it more accessible to developers. This was achieved by processing the TeX sources of the standard, which was last updated on June 22, 2026. The project, version 1.0.4, provides a comprehensive documentation set, including an index of defined names, errata, and addenda.

The development of Metaspec is significant because it provides an alternative to the traditional TeX-based documentation of the ANSI Common Lisp standard. By converting the standard into S-Expr and HTML formats, Metaspec makes it easier for developers to access and work with the documentation. This is particularly relevant for the Common Lisp community, which has been working on standardizing the language. The ANSI Common Lisp standard, also known as X3J13R document 94-101R, is a crucial reference for developers working with the language.

The broader context of this development is the ongoing effort to maintain and evolve the Common Lisp language. As a mature programming language, Common Lisp continues to have a dedicated community of developers who rely on the ANSI standard for guidance. The availability of Metaspec in S-Expr and HTML formats can facilitate the development of new tools and applications that build upon the standard. Furthermore, this project demonstrates the value of community-driven initiatives in maintaining and promoting open standards.