just as massenet prepares werther to kill himself (on the radio), up
pops the daemon and says:
The following information was provided by the package's contributor.
Name of contribution: expl3
Author's name: LaTeX Team
Location on CTAN: /macros/latex/contrib/expl3
Summary description: Low-level LaTeX3 programming conventions
License type: lppl
Announcement text given by the package's contributor:
--
The expl3 bundle: Low-level LaTeX3 programming conventions
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 1733)
Since SVN 1550, internal changes have been made to switch from
\cs_new:Nn to \cs_new:npn (and of forth) for performance
reasons. Some numerical code has switched from using num to
int storage.
The messaging system (l3msg) now allows messages to use up to
four arguments. At the same time, the recovery code concept
has been removed from l3msg, which now focusses purely on
messages. These changes may therefore require changes to other code.
Kernel messages are now divided up into groups, so that they can
be named more freely. More details of these changes are included
in l3obsolete.txt
In the l3keys module, there have been some improvements to
choices. An error is now issued if .generate_choices:n is given
before .choice_code:n has defined the necessary code. The value
\l_keys_choice_int is now indexed from 0, rather than from 1,
so that it is more easily used with \if_case:w and so on.
New functions \chk_if_free_cs:c and \seq_if_in:NV(TF) have
been added. The \exp_args:x function has been removed from the
core of expl3, as it is only of significant benefit when using
LuaTeX.
Documentation has been improved at various places. Some changes
have been made the font loading system, so that the use of
lmodern is documented, and details of using l3doc.cfg to change the
behaviour are provided.
The LaTeX3 Project
Users may view the package catalogue entry at
http://www.tex.ac.uk/tex-archive/help/Catalogue/entries/expl3.html
or they may browse the package directory at
http://www.tex.ac.uk/tex-archive//macros/latex/contrib/expl3
the catalogue entry will change overnight (though the difference will
hardly be noticeable).
Robin Fairbairns
For the CTAN team
___
Ctan-ann mailing list
Ctan-ann@dante.de
https://lists.dante.de/mailman/listinfo/ctan-ann
