Where is source code of TeX, LuaTeX, pdfTeX

Question

Today, TeX is a big program, LuaTeX, PDFTeX, METAPOST etc. Where is the public accessing source code for hacking LuaTeX or other implementations. For example, I need to embed TeX into C program or creating Ruby object TeX.

The source code for LaTeX and TeX is written in TeX. The original engine was written in Pascal and translated into various other languages (there is a test for validation). You might have better luck running LaTeX as a separate server with a custom driver. — John Kormylo, Aug 08 '17 at 12:48
Note that TeX90, pdfTeX, XeTeX, etc. are written in WEB (a form of specialised Pascal source), and are nowadays built using WEB2C (part of TeX Live); LuaTeX is natively in C. — Joseph Wright, Aug 08 '17 at 13:19
Pls confirm if Duplicate of How to compile the source code of TeX, XeTeX source code and Installing and using MPlib — texenthusiast, Aug 08 '17 at 14:04
While not exactly answering the question, there is also C/WEB programs in TeX Live 2023 (also found in https://ctan.math.illinois.edu/info/knuth-hint/) which contains the typesetted changes. — user202729, Feb 03 '24 at 20:17

score 29 · Accepted Answer · edited May 11 '23 at 20:24

TeX Live:

WWW: https://www.tug.org/texlive/
SVN: svn://tug.org/texlive/
SVN web interface (ViewVC): https://tug.org/svn/texlive/
Mirror: https://github.com/TeX-Live/texlive-source

XeTeX:

WWW: https://xetex.sourceforge.net/
Git: https://git.code.sf.net/p/xetex/code
Git web interface: https://sourceforge.net/p/xetex/code

LuaTeX

WWW: http://www.luatex.org
Main Git repo: https://gitlab.lisn.upsaclay.fr/texlive/luatex
Git mirror: https://github.com/TeX-Live/luatex

MetaPost

WWW: https://www.tug.org/metapost.html
SVN: https://serveur-svn.lri.fr/svn/modhel/metapost (anonsvn / anonsvn)

pdfTeX

WWW: https://www.tug.org/applications/pdftex/
SVN: svn://tug.org/pdftex
SVN web interface (ViewVC): https://tug.org/svn/pdftex/

The LuaTeX repository just screams "we don't want any contributions" — piegames, Jan 28 '21 at 14:20

Henri Menke · Answer 2 · 2018-12-31T23:26:49.940

11

The complete sources from which TeX Live is built are available to browse online on a GitHub mirror (note that this is not the upstream source which is a private SVN).

https://github.com/TeX-Live/texlive-source

Therein you can find the source for the different components:

The experimental LuaTeX also has its own GitHub mirror. There you can find the source in the directory source/texk/web2c/luatexdir.

edited Dec 31 '18 at 23:26

answered Jul 23 '18 at 04:02

Henri Menke

109,596

broken links for the sub links. – Display Name Dec 31 '18 at 22:58
2

@GodMustBeCrazy The branch has been renamed from master to trunk. I fixed the links. – Henri Menke Dec 31 '18 at 23:27
Either not, or no longer a private SVN, I reckon: https://tug.org/svn/texlive/ – 0xC0000022L May 11 '23 at 20:13

score 9 · Answer 3 · answered Aug 08 '17 at 12:42

9

TeX

https://www.ctan.org/tex-archive/systems/knuth/dist/tex

This is a good starting point.

LuaTeX

http://www.luatex.org/download.html

answered Aug 08 '17 at 12:42

Neelix

466

Luatex link not workin. SVN repository have password. This is wrong answer – Marko Lustro Aug 08 '17 at 12:47
6

@MarkoLustro I don't follow how it's wrong: that is the official master repo for LuaTeX. One could get the TeX Live version (https://www.tug.org/texlive/svn/), which if you are happy with 'reasonable approximation to current release' is OK, but it's not the 'master' source. – Joseph Wright Aug 08 '17 at 12:59
Yes this is oficial web but I cant download source code from this web – Marko Lustro Aug 08 '17 at 13:01
A quick google search will tell you user name and passwort – samcarter_is_at_topanswers.xyz Aug 08 '17 at 13:02
@MarkoLustro You are expected to ask for it I think – Joseph Wright Aug 08 '17 at 13:03
4

Username:anonsvn Password:anonsvn – Neelix Aug 08 '17 at 13:03
4

A "quick" search does not immediately reveal the username and password. (Thanks, Neelix.) However, is it not the case that luatex is distributed under an open license that requires the source code to be publicly available? Why should there be a username and password, even if known? – Aug 08 '17 at 15:09
1

It is not that uncommon to require a publicly available username and password for a free repo. However, if 'ask for it' in @JosephWright 's sense means 'email somebody or fill in a form or ....' then that might be problematic for some free licences. But unless they're releasing binaries of the master, it is unlikely to violate anything, so long as source of the releases is easily available. Few (no?) licences say you have to release code for stuff you don't distribute. – cfr Sep 05 '18 at 22:16

Where is source code of TeX, LuaTeX, pdfTeX

3 Answers3

TeX Live:

XeTeX:

LuaTeX

MetaPost

pdfTeX

Linked