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diff --git a/Master/texmf-dist/source/latex/base/ltnews27.tex b/Master/texmf-dist/source/latex/base/ltnews27.tex deleted file mode 100644 index 93281c19126..00000000000 --- a/Master/texmf-dist/source/latex/base/ltnews27.tex +++ /dev/null @@ -1,135 +0,0 @@ -% \iffalse meta-comment -% -% Copyright 2017 -% The LaTeX3 Project and any individual authors listed elsewhere -% in this file. -% -% This file is part of the LaTeX base system. -% ------------------------------------------- -% -% It may be distributed and/or modified under the -% conditions of the LaTeX Project Public License, either version 1.3c -% of this license or (at your option) any later version. -% The latest version of this license is in -% http://www.latex-project.org/lppl.txt -% and version 1.3c or later is part of all distributions of LaTeX -% version 2005/12/01 or later. -% -% This file has the LPPL maintenance status "maintained". -% -% The list of all files belonging to the LaTeX base distribution is -% given in the file `manifest.txt'. See also `legal.txt' for additional -% information. -% -% The list of derived (unpacked) files belonging to the distribution -% and covered by LPPL is defined by the unpacking scripts (with -% extension .ins) which are part of the distribution. -% -% \fi -% Filename: ltnews27.tex -% -% This is issue 27 of LaTeX News. - -\documentclass{ltnews} -\usepackage[T1]{fontenc} - -\usepackage{lmodern,url,hologo} - -\publicationmonth{April} -\publicationyear{2017} - -\publicationissue{27} - -\begin{document} - -\maketitle -\tableofcontents - -\setlength\rightskip{0pt plus 3em} - -\section{ISO 8601 Date format} -Since before the first releases of \LaTeXe, \LaTeX\ has used a date -format in the form \textsc{yyyy/mm/dd}. This has many advantages over more -conventional formats, as it is easy to sort and avoids the unfortunate -ambiguity between different communities as to whether 01/02/2017 is the -1st of February or 2nd of January. - -However there is another date format, formalised by the -International Standard ISO~8601. The basic format defined by this -standard is functionally equivalent to the \LaTeX\ format, but using -\texttt{-} rather than \texttt{/}. This date format is now supported -in many Operating Systems and applications -(for example the \verb|date --iso-8601| command in Linux and similar systems). - -From this release, \LaTeX\ will accept ISO format date strings in the -date argument of \verb|\ProvidesPackage|, \verb|\usepackage|, etc. -Currently we recommend that you do not use this format in any packages -that need to work with older \LaTeX\ releases; -the \textsf{latexrelease} package may be used with older releases to - add this functionality. This change is handled in a special way by - \textsf{latexrelease}: The package always adds support for ISO dates -whatever format date is requested; this is required so that the -necessary date comparisons may be made. - -The new functionality can be seen in the startup banner which -advertises \texttt{LaTeX2e <2017-04-15>}. - -\section{Further TU encoding improvements} -The 2017/01/01 release saw the introduction of the new TU encoding for -specifying Unicode fonts with \hologo{LuaTeX} and -\hologo{XeTeX}. There were a number of small corrections and additions -in the patch releases updating 2017/01/01, and a further addition in -this release, notably extended support for the dot-under accent, -\verb|\d|. - - -\section{Disabling hyphenation} -The existing \LaTeX\ code for \verb|\verb| and \verb|verbatim| had some -issues when used with fonts that were not loaded with hyphenation -disabled via setting \verb|\hyphenchar| to $-1$. In this release these -verbatim environments use a \verb|\language| setting, -\verb|\l@nohyphenation|, that has no hyphenation patterns associated. - -The format ensures that a language has been allocated with this name. -For most users this will in fact be no change as the standard -\textsf{babel} language has for a long time allocated a language with -this name. - -In order that page breaks in \texttt{verbatim} do not influence the -language used in the page head and foot, the format now normalises the -language used in the output routine to a default language as described -below. - -\section{Discretionary hyphenation} -The \LaTeX\ definition of \verb|\-| has been adjusted so that it will -insert the current font's \verb|\hyphenchar|, as would the -\TeX\ primitive. A comment in \textsf{source2e} has given -this new definition since the first releases of \LaTeXe, and in this -release we finally acted upon this comment. Previously \verb|\-| -always inserted a \texttt{-} at a break point even if a different -character would be used for automatic hyphenation with the current font. - -\section{Default document language} - -A new integer parameter \verb|\document@default@language| is -introduced; this is initialised to $-1$ but is set at -\verb|\begin{document}| to the language in force at that time if it - has not been set by preamble code. This is very similar to the - handling of the default color, and is used in a similar way to - normalise the settings for page head and foot as described above. -Users should not normally need to set this explicitly but it is expected that -language packages such as \textsf{babel} may set this if the default -behaviour is not suitable. - -\section{Line spacing in parboxes} -Inside a \verb|\parbox| -\LaTeX\ normalises the baseline spacing. However it has not -previously reset \verb|\lineskiplimit|. This meant that -lines of a paragraph that have ascenders or descenders could be set -with \emph{closer} line spacing than lines without. This can easily -happen if you use a \verb|\parbox| in an AMS alignment, as they use a -relatively large value of \verb|\lineskiplimit|. -As usual, the \textsf{latexrelease} package may be used to -force the older behavior. - -\end{document} |