[latex3-commits] [git/LaTeX3-latex3-latex2e] issue-124: \symbol: ltnews32 (ae5ed46e)

[Will Robertson]

Repository : https://github.com/latex3/latex2e
On branch  : issue-124
Link       : https://github.com/latex3/latex2e/commit/ae5ed46e3ffedbb6b181e6bf06e772180a241ff4

>---------------------------------------------------------------

commit ae5ed46e3ffedbb6b181e6bf06e772180a241ff4
Author: Will Robertson <wspr81 at gmail.com>
Date:   Fri Feb 7 17:20:48 2020 +1030

    \symbol: ltnews32


>---------------------------------------------------------------

ae5ed46e3ffedbb6b181e6bf06e772180a241ff4
 base/doc/ltnews32.tex | 162 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)

diff --git a/base/doc/ltnews32.tex b/base/doc/ltnews32.tex
new file mode 100644
index 00000000..79df7996
--- /dev/null
+++ b/base/doc/ltnews32.tex
@@ -0,0 +1,162 @@
+% \iffalse meta-comment
+%
+% Copyright 2019-2020
+% 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
+%    https://www.latex-project.org/lppl.txt
+% and version 1.3c or later is part of all distributions of LaTeX
+% version 2008 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: ltnews31.tex
+%
+% This is issue 31 of LaTeX News.
+
+\NeedsTeXFormat{LaTeX2e}[2020-02-02]
+
+\documentclass{ltnews}
+\usepackage[T1]{fontenc}
+
+\usepackage{lmodern,url,hologo}
+
+\usepackage{csquotes}
+\usepackage{multicol}
+
+\providecommand\meta[1]{$\langle$\textit{#1}$\rangle$}
+\providecommand\option[1]{\texttt{#1}}
+\providecommand\env[1]{\texttt{#1}}
+
+
+\providecommand\XeTeX{\hologo{XeTeX}}
+\providecommand\LuaTeX{\hologo{LuaTeX}}
+\providecommand\pdfTeX{\hologo{pdfTeX}}
+\providecommand\MiKTeX{\hologo{MiKTeX}}
+\providecommand\CTAN{\textsc{ctan}}
+\providecommand\TL{\TeX\,Live}
+\providecommand\githubissue[2][]{\ifhmode\unskip\fi
+     \quad\penalty500\strut\nobreak\hfill
+     \mbox{\small\slshape(%
+       \href{https://github.com/latex3/latex2e/issues/\getfirstgithubissue#2 \relax}%
+          	    {github issue#1 #2}%
+           )}%
+     \par\smallskip}
+
+% simple solution right now (just link to the first issue if there are more)
+\def\getfirstgithubissue#1 #2\relax{#1}
+
+\providecommand\sxissue[1]{\ifhmode\unskip\fi
+     \quad\penalty500\strut\nobreak\hfill
+     \mbox{\small\slshape(\url{https://tex.stackexchange.com/#1})}\par}
+
+\providecommand\gnatsissue[2]{\ifhmode\unskip\fi
+     \quad\penalty500\strut\nobreak\hfill
+     \mbox{\small\slshape(%
+       \href{https://www.latex-project.org/cgi-bin/ltxbugs2html?pr=#1\%2F#2}%
+          	    {gnats issue #1/#2}%
+           )}%
+     \par}
+
+\let\cls\pkg
+\providecommand\env[1]{\texttt{#1}}
+
+\vbadness=1400  % accept slightly empty columns
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\iffalse % only for TUB production
+\usepackage{graphicx}
+\makeatletter
+% Xe\TeX{} requires reflecting the first E, hence we complain if the
+% graphics package is not present.  (For plain documents, this can be
+% loaded via Eplain.)  Also, at Barbara's suggestion, if the current
+% font is slanted, we rotate by 180 instead of reflecting so there is at
+% least a chance to look ok.  (The magic values here seem more or less
+% ok for \texttt{cmsl} and \texttt{cmti}.)
+%
+%    \begin{macrocode}
+\def\tubreflect#1{%
+  \@ifundefined{reflectbox}{%
+    \TBerror{A graphics package must be loaded for \string\XeTeX}%
+  }{%
+    \ifdim \fontdimen1\font>0pt
+      \raise 1.6ex \hbox{\kern.1em\rotatebox{180}{#1}}\kern-.1em
+    \else
+      \reflectbox{#1}%
+    \fi
+  }%
+}
+\def\tubhideheight#1{\setbox0=\hbox{#1}\ht0=0pt \dp0=0pt \box0 }
+\def\XekernbeforeE{-.125em}
+\def\XekernafterE{-.1667em}
+\DeclareRobustCommand{\Xe}{\leavevmode
+  \tubhideheight{\hbox{X%
+    \setbox0=\hbox{\TeX}\setbox1=\hbox{E}%
+    \ifdim \fontdimen1\font>0pt \def\XekernbeforeE{0em}\fi
+    \lower\dp0\hbox{\raise\dp1\hbox{\kern\XekernbeforeE\tubreflect{E}}}%
+    \kern\XekernafterE}}}
+\def\XeTeX{\Xe\TeX}
+\def\XeLaTeX{\Xe{\kern.11em \LaTeX}}
+\fi
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\publicationmonth{February}
+\publicationyear{2020}
+
+\publicationissue{32}
+
+\begin{document}
+
+%\addtolength\textheight{4.2pc}   % only for TUB
+
+\maketitle
+{\hyphenpenalty=10000 \spaceskip=3.33pt \hbadness=10000 \tableofcontents}
+
+\setlength\rightskip{0pt plus 3em}
+
+
+\medskip
+
+
+\section{Introduction}
+
+This document is under construction \ldots
+
+
+
+\section{Other changes to the \LaTeX{} kernel}
+
+
+\subsection{\cs{symbol} in math mode for large Unicode values}
+
+The \LaTeXe{} kernel defines the command \cs{symbol}, which allows characters to be
+typeset by entering their `slot number'. With the \LuaTeX{} and \XeTeX{} engines, these
+slot numbers can extend to very large values to accomodate Unicode characters in the upper
+Unicode planes (e.g., bold mathematical capital A is slot number \texttt{"1D400} in hex or
+\texttt{119808} in decimal).
+The \XeTeX{} engine did not allow \cs{symbol} in math mode for values above $2^16$, and
+this limitation has now been lifted.
+%
+\githubissue{124}
+
+
+
+
+\end{document}