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authorKarl Berry <karl@freefriends.org>2013-03-12 22:38:22 +0000
committerKarl Berry <karl@freefriends.org>2013-03-12 22:38:22 +0000
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tree9ea4729ca09c49a4564d99d9134a5417eb7b2af3 /Master/texmf-dist/doc/latex/l3kernel/l3syntax-changes.tex
parent5c30ca128a813719715e012a0d72c1ccaba2d811 (diff)
latex3 (12mar13)
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-\iffalse meta-comment
-
-File l3syntax-changes.tex Copyright (C) 2011-2012 The LaTeX3 Project
-
-It may be distributed and/or modified under the conditions of the
-LaTeX Project Public License (LPPL), either version 1.3c of this
-license or (at your option) any later version. The latest version
-of this license is in the file
-
- http://www.latex-project.org/lppl.txt
-
-This file is part of the "l3kernel bundle" (The Work in LPPL)
-and all files in that bundle must be distributed together.
-
-The released version of this bundle is available from CTAN.
-
-\fi
-
-\documentclass{l3doc}
-
-\usepackage{svn-multi}
-
-\svnid{$Id: l3syntax-changes.tex 4048 2012-08-02 09:49:10Z joseph $}
-\def\filedate{\svnfileyear/\svnfilemonth/\svnfileday}
-
-\title{%
- Syntax changes in \LaTeX3 functions
- \thanks
- {%
- This file describes v\svnfilerev,
- last revised \filedate.
- }%
-}
-\author{%
- The \LaTeX3 Project\thanks
- {%
- E-mail:
- \href{mailto:latex-team@latex-project.org}%
- {latex-team@latex-project.org}%
- }%
-}
-\date{Released \filedate}
-
-\newcommand{\TF}{\textit{(TF)}}
-
-\begin{document}
-
-\maketitle
-
-This file lists functions whose syntax has changed after August 2011,
-with an approximate date.
-
-\section{August 2011}
-
-\begin{itemize}
- \item \cs{tl_if_single:n\TF} recognized any non-zero number of
- explicit spaces as \meta{true}, and did not ignore trailing spaces.
- Now it is \meta{true} for
- \[
- \meta{optional spaces}
- \meta{normal token or brace group}
- \meta{optional spaces}.
- \]
- \item \cs{tl_reverse:n} stripped outer braces and lost unprotected spaces.
- Now it keeps spaces, leaves unbraced single tokens unbraced, and
- braced groups braced.
- \item \cs{tl_trim_spaces:n} only removed one leading and trailing space.
- Now removes recursively. Also, on the left it used to strip implicit
- and explicit spaces with any character code. Now it strips only explicit
- space characters $(32,10)$.
-\end{itemize}
-
-\section{September 2011}
-
-\begin{itemize}
-\item clist functions which receive an \texttt{n}-type comma list argument
- now trim spaces from each item in the argument.
-\end{itemize}
-
-\section{June 2012}
-
-\begin{itemize}
- \item Access to list functions now indexes from~$1$, not from~$0$.
- This applies to multiple choices in the \pkg{l3keys} module and
- the \cs{clist_item:Nn}, \cs{seq_item:Nn} and \cs{tl_item:Nn}
- functions.
- \item \cs{tl_trim_spaces:n} now requires a variable number of
- expansions to fully expand, rather than exactly two. Of course,
- \texttt{x}-type expansion still correctly evaluates this function.
-\end{itemize}
-
-\section{July 2012}
-
-\begin{itemize}
- \item The \cs{tl_if_head_eq_meaning:nN}, \cs{tl_if_head_eq_catcode:nN}
- and \cs{tl_if_head_eq_charcode:nN} conditionals now never match when
- their first argument is empty.
-\end{itemize}
-
-\section{August 2012}
-
-\begin{itemize}
- \item \cs{lua_now:x} is now a standard \texttt{x}-type expansion of
- \cs{lua_now:n}, which does no expansion. Engine-level expansion is moved
- to \cs{lua_now_x:n}, reflecting the fact that this is non-standard in the
- same way as for example \cs{str_if_eq_x:nn(TF)}.
-\end{itemize}
-
-
-\end{document}