CTAN Comprehensive TeX Archive Network

CTAN update: expl3

Date: September 5, 2009 3:25:29 PM CEST
This update should within a day reach your local mirror. Jim Hefferon Saint Michael's College .......................................................................... The following information was provided by our fellow contributor: Name of contribution: expl3 Version number: SVN 1509 Author's name: LaTeX3 Project Location on CTAN: /macros/latex/contrib/expl3 Summary description: An Experimental LaTeX3 Programming Convention License type: lppl Announcement text:
The expl3 bundle: low-level LaTeX3 coding
The files of the expl3 bundle provide a low-level API for TeX programmers with special syntax conventions, completely separating it from document level syntax. Hence, the commands provided are not intended for use at the document level nor for use in describing design layouts in document class files. This API provides the foundation on which the LaTeX3 kernel and other advanced extensions are built. Special care has been taken so that they can be used within a LaTeX2e context as regular packages. The TeX and eTeX primitives are all given a new name according to these conventions. However, in the main direct use of the primitives is not required or encouraged: the expl3 modules define an independent low-level LaTeX3 programming language. At present, the expl3 modules are designed to be loaded on top of LaTeX2e: \usepackage{expl3} In time, a LaTeX3 format will be produced based on this code. This allows the code to be used in LaTeX2e packages now while a stand-alone LaTeX3 is developed.
This release (SVN 1509)
Most of the changes to expl3 since the last snapshot (SVN 1441) are additions or documentation improvements. The documentation provided in expl3.pdf has been heavily revised to make it clearer which parts of the bundle are stable. The terminology used has also been tightened up. Some of the module documentation has had minor improvements to try to ensure that all functions are documented. The new functions added are: - \exp_args:NnV - \keys_if_exist:nn(TF) - \prop_put:NVn - \prop_put:NVV - \tl_head:V - \tl_tail:V as these have proved useful to the team. These updated functions are needed by the SVN version of the xpackages. There has also been some One undocumented function has been removed: - \file_not_found:nTF as this can now be handled using the l3file module. Some minor internal logic changes have been made to a small number of functions. This should not affect the functions in use.
The LaTeX3 Project
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/expl3 . More information is at http://tug.ctan.org/pkg/expl3 (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .

expl3 – Wrapper package for experimental 3

The package serves as a wrapper for other packages that make up the 3 kernel distribution.

The package is distributed as part of the 3 kernel distribution.

Version 2023-12-08
Copyright1990–2023 The 3 Project
MaintainerThe Project Team



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