Metaspec: The DpANS3R Common Lisp Spec in S-Expr and HTML Format
I started this project back in 2015, to translate the TeX original specification into an easily parsed format (s-doc), and to create an HTML rendering of that format as a proof of concept. The project is homed here: https://codeberg.org/dlowe/metaspectre/ Differences from the Hyperspec (from the README): - Most importantly, it is free to modify and distribute. - The original TeX is very hard to parse and use for things other than generating a printed copy. The Hyperspec is an HTML rendering which can be parsed as HTML, but loses a lot of information. The Metaspec has…
In plain words
Metaspec is a machine-readable translation of the DPANS3 Common Lisp specification into S-expressions and HTML format. Created for developers and language implementers, it converts the original TeX specification into an easily parsed intermediate format that preserves information lost in the standard Hyperspec HTML rendering. The project is freely modifiable and distributable, includes features like MathML equation rendering and searchable documentation, and provides an alternative to the original specification that supports programmatic access and customization.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I started this project back in 2015, to translate the TeX original specification into an easily parsed format (s-doc), and to create an HTML rendering of that format as a proof of concept. The project is homed here: https://codeberg.org/dlowe/metaspectre/ Differences from the Hyperspec (from the README): - Most importantly, it is free to modify and distribute. - The original TeX is very hard to parse and use for things other than generating a printed copy. The Hyperspec is an HTML rendering which can be parsed as HTML, but loses a lot of information. The Metaspec has an easily parsed intermediate form that can be used for all kinds of purposes, like converting into lookups. - Math equations are rendered using MathML. - Includes the acknowledgements and appendix sections. - Uses progressively enhanced Javascript to provide search and light/dark theme switching. - Incorporates over 145 patches for content, using corrections accumulated over the years, and documented in the errata page. - Includes TeX comments, which can contain interesting historical data. - Includes links and identifiers to bibliographical references.
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