diff options
Diffstat (limited to 'macros/latex-dev/base/latexchanges.tex')
| -rw-r--r-- | macros/latex-dev/base/latexchanges.tex | 99 |
1 files changed, 82 insertions, 17 deletions
diff --git a/macros/latex-dev/base/latexchanges.tex b/macros/latex-dev/base/latexchanges.tex index dc8eb4be4e..500baa66c2 100644 --- a/macros/latex-dev/base/latexchanges.tex +++ b/macros/latex-dev/base/latexchanges.tex @@ -1,6 +1,6 @@ % \iffalse meta-comment % -% Copyright (C) 2015-2020 +% Copyright (C) 2015-2021 % The LaTeX3 Project and any individual authors listed elsewhere % in this file. % @@ -38,10 +38,10 @@ \title{Changes to the \LaTeXe{} format} -\author{\copyright~Copyright 2015--2020, \LaTeX3 Project Team.\\ +\author{\copyright~Copyright 2015--2021, \LaTeX3 Project Team.\\ All rights reserved.} -\date{2020-02-02} +\date{2021-01-08} % a few commands from doc \newcommand\Lpack[1]{\mbox{\textsf{#1}}} @@ -75,16 +75,15 @@ \url{https://tex.stackexchange.com/q/#1}} \fi -\begin{document} -\maketitle +\setcounter{tocdepth}{1} % don't show subsections -\tableofcontents -\newpage +\begin{document} -\section{Introduction} +\maketitle +\begin{abstract} This document describes changes that were made to the \LaTeX\ format since the 2014-05-01 \LaTeX\ releases. @@ -99,13 +98,79 @@ As a summary of changes for a main release will always be available in but changes in any patch releases will be listed in more detail here. -More detailed change logs are available as +More detailed change logs are available as \texttt{changes.txt} in the base distribution, and full code differences may be browsed via the code repository on GitHub see for example \url{https://github.com/latex3/latex2e/commits/master}. +\end{abstract} + +\tableofcontents + +\newpage + +%\section{Introduction} + + + +\section{Changes introduced in 2020-10-01 patch~4} + +This patch fixed two bugs in the hook management: if debugging for the +L3 programming layer was turned on it reported inconsistent use of +local/global variables. This was a spurious warning but nevertheless +disconcerting (\ghissue{463}). The other bug was more serious, in some +situations a wrong value of \verb=\CurrentFile= inside of file-related hooks +could lead to errors (\ghissue{464}). + +We also added the documentation file \texttt{userguide3.pdf} which +will become the main home for documenting new features of \LaTeX. At +this point in time it covers the \Lpack{xparse} functionality that has +been added to the kernel. + +\section{Changes introduced in 2020-10-01 patch~3} + +This patch fixed some rollback issues that prevented successful +rollback to other release levels in some cases. It also fixed an issue +with file hooks involving files with explicit paths (\ghissue{422}). + +One important change was to handle hook declarations done in the +document preamble in a special way, e.g., those done with +\verb=\AtBeginDocument=. They are now always executed last and are not +subject to the normal code sorting for hooks, because they are nearly always +needed to overwrite earlier settings made in packages. + +Finally, the NFSS series handling was slightly changed to +automatically drop surplus ``\texttt{m}''s from series specifications +when needed (and warn about them when encountered), e.g., +``\texttt{mc}'' automatically becomes ``\texttt{c}'' which is the +official NFSS name for a \emph{medium compact} series (\ghissue{453}). +This was done to improve the fix in 2020-02-02 PL~5. + +\section{Changes introduced in 2020-10-01 patch~2} + +This patch fixed the passing of options to packages and classes when +they are stored in a special place (denoted by \verb=\input@path=) +instead of their normal location (\ghissue{414}). In that case the +options got lost. + +\section{Changes introduced in 2020-10-01 patch~1} + +This patch fixed a file handling issue: to allow for spaces in file +names quotes were used but this upsets Bib\TeX{} (\ghissue{400}). In +addition, two rollback issues got corrected. + +\section{Changes introduced in 2020-10-01} +Major enhancements in this release include pre-loading of the +\Lpack{xparse} package for producing document-level commands with more +complicated argument signatures and the new hook management system for +\LaTeX{} documented in \texttt{lthooks-doc.pdf}, +\texttt{ltfilehook-doc.pdf} and \texttt{ltshipout-doc.pdf}. +In addition there have been many smaller fixes and enhancements. +Please see \ltnewsissue{32} for an overview of the new features and +the change log in \texttt{changes.txt} for a more detailed list of +individual changes. \section{Changes introduced in 2020-02-02 patch~5} @@ -167,7 +232,7 @@ Major enhancements in this release include pre-loading \Lpack{expl3} to improve startup times, especially with Lua\TeX\ and Xe\TeX, and extra features in the font selection mechanism. Please see \ltnewsissue{31} for an overview of the new features and the change -log in \texttt{changelog.txt} for a more detailed list of individual +log in \texttt{changes.txt} for a more detailed list of individual changes. @@ -248,7 +313,7 @@ counter prefix commands \verb|p@...| so that they would take the counter value as an argument instead of just acting as a prefix to them. These packages also provided the \verb|\labelformat| macro to change the prefix macro and \verb|\Ref| so that using counters defined that way in the -beginning of sentences would have the proper capitalisation. These features +beginning of sentences would have the proper capitalization. These features were added to the \LaTeXe{} kernel. The kernel now says ``Trying to load\ldots'' @@ -283,7 +348,7 @@ provided as alias for the names based on the Adobe font names The use of potrusion in tables of contents is suppressed by default, see \sxquestion{172785}. -The handling of visible space in verbation was adjusted for +The handling of visible space in verbatim was adjusted for \ghissue{69} and \ghissue{70}. Spaces are removed from the argument passed to BiBTeX, \ghissue{88}. @@ -295,7 +360,7 @@ levels of split hyperlinks, avoiding a fatal pdftex error. \ghissue{94}. \section{Changes introduced in 2018-04-01 patch~5} -Improved support for non ASCII filenames on the commandline on +Improved support for non ASCII filenames on the command line on filesystems using legacy encodings. Adjusted the new package rollback code so that some edge cases where rollback @@ -344,11 +409,11 @@ Lua\TeX, now at 1.04. Previously defining an encoding-specific composite with an undeclared accent (or an accent declared later) gave no error, but did nothing useful. -\LaTeX\ will now detect this and give the accent comamnd a default definition +\LaTeX\ will now detect this and give the accent command a default definition as an error, allowing the declared composite to work as intended. The definition of \verb|\-| is adjusted to match the comments in -\gnatsissue{3855} to accomodate non standard settings of \verb|\hyphenchar|. +\gnatsissue{3855} to accommodate non standard settings of \verb|\hyphenchar|. In parboxes and similar settings, \verb|\lineskiplimit| is now reset (to the existing default value, \verb|\normallineskiplimit|). @@ -409,7 +474,7 @@ Load Unicode data from new generic \texttt{unicode-data} distribution. \section{Changes introduced in 2015/10/01 patch~2} -This release fixes the behaviour of the allocation mechanism if the switch +This release fixes the behavior of the allocation mechanism if the switch from the standard to extended pool takes place within a group. \section{Changes introduced in 2015/10/01 patch~1} @@ -444,7 +509,7 @@ The command |\textcommabelow| has been added. This is mainly intended for Romani \textcommabelow{S}\,\textcommabelow{s}\,\textcommabelow{T}\,\textcommabelow{t}. \subsection{Unicode 8} -The file |unicode-letters.def| used to initialise character data in +The file |unicode-letters.def| used to initialize character data in Unicode \TeX\ variants has been regenerated from data files updated to Unicode~8. |