In case you didn't know, the source code of TeX itself is Pascal and published as a 500 pages literate programming tool which clearly is rendered with TeX, avai

In case you didn't know, the source code of TeX itself is Pascal and published as a 500 pages literate programming tool which clearly is rendered with TeX, available at http://texdoc.net/texmf-dist/doc/generic/knuth/tex/tex.pdf#625 http://texdoc.net/texmf-dist/doc/generic/knuth/tex/tex.pdf#6... If this was machine readable, then TeX could compile TeX ;-)