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diff --git a/Master/texmf-dist/source/latex-dev/base/exscale.dtx b/Master/texmf-dist/source/latex-dev/base/exscale.dtx new file mode 100644 index 00000000000..49e53ca5f87 --- /dev/null +++ b/Master/texmf-dist/source/latex-dev/base/exscale.dtx @@ -0,0 +1,202 @@ +% \iffalse meta-comment +% +% Copyright 1993-2018 +% 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 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 +% \iffalse +%%% File: exscale.dtx +%% Copyright (C) 1992-1997,2007 Frank Mittelbach and Rainer Sch\"opf, +%% all rights reserved. +%<package>\NeedsTeXFormat{LaTeX2e} +%<package>\ProvidesPackage{exscale} +%<fd, >\ProvidesFile{OMXcmex.fd} +%<package,fd> [2018/09/24 v2.1i +%<package> Standard LaTeX package exscale] +%<fd, > exscale package font definitions] +%<*driver> +\documentclass{ltxdoc} +\usepackage{exscale} +\GetFileInfo{exscale.sty} +\begin{document} +\title{The \texttt{exscale} package\thanks + {This file has version number \fileversion, dated \filedate.}\\ + for use with \LaTeX2e} +\author{Frank Mittelbach \and Rainer Sch\"opf} +\date{\filedate} +\MaintainedByLaTeXTeam{latex} + \maketitle + \DocInput{exscale.dtx} +\end{document} +%</driver> +% \fi +% +% +% \changes{v2.1g}{1997/06/16}{Documentation fix.} +% \changes{v2.1d}{1994/05/09}{Added setting \cs{big}... sizes.} +% \changes{v2.1c}{1994/05/08}{Changed to new documentation standards.} +% \changes{v2.1a}{1993/12/12}{Update for \LaTeXe} +% +% \def\MF{\textsf{Metafont}} +% \def\dst{{\normalfont\scshape docstrip}} +% +% +% \section{Introduction} +% +% On popular request, this package implements scaling of the +% math extension font `cmex'. If this package is used the site needs +% scaled versions of the \texttt{cmex10} in the sizes 10.95pt, 12pt, +% 14.4pt , 17.28pt, 20.74pt, and 24.88pt which corresponds to standard +% magsteps using |\magstephalf|, and |\magstep1| through |\magstep5|. +% Additionally `cmex' variants for the sizes 7pt to 9pt are necessary. +% These fonts are part of the AMS font package and can be found on +% many servers. +% +% We don't think that using a scalable `cmex' font improves the +% appearance of the document very much because the linear scaling of +% the font introduces changes to font dimen parameters of the font +% that are used all over the place in \TeX's math placement routines +% and definitely shouldn't be scaled linearly. As a positive result, +% however, symbols from this font will come out in approximately the +% right size when used with a large basis font size. +% +% We therefore strongly recommend the generation of designed fonts for +% the larger sizes and hope that the corresponding \MF{} sources will +% be available in the near future. +% +% +% \section{Usage} +% +% This file can be used either as a package by placing its name +% in the argument of +% |\usepackage|, or by generating from it a |.fd| file which then +% replaces the normally used |.fd| file |OMXcmex.fd|. +% +% For the second solution you should prepare a small \dst{} command +% file containing the following statements: +% \begin{quote} +% |\def\batchfile{|\meta{name-of-your-command-file}|}| \\ +% |\input docstrip.tex| \\ +% |\generateFile{OMXcmex.fd}{t}{\from{exscale.dtx}{fd}}| +% \end{quote} +% and then run this file through \LaTeX. +% This would mean however, that your documents may look different if +% they are printed on another installation whereas when using the +% package file they would come out the same on both sites. +% +% \StopEventually{} +% +% +% \section{Implementation} +% +% +% In case this should produce a font definition file we write +% a message to the transcript file only. +% The explicit spaces are necessary in an +% |.fd| file and the |\string| guards against situations where |`|, +% |<| or |>| is active. +% \changes{v2.1f}{1995/11/27}{Use \cs{ProvidesFile}} +% \begin{macrocode} +%\ProvidesFile{OMXcmex.fd}[]% moved to top of the file +% \end{macrocode} +% +% We now define to which external fonts the font/shape Computer Modern +% Extension Medium Normal. For the sizes 7--10pt we use fonts that are +% designed for the corresponding size and for the higher sizes we use +% scaled versions of the 10pt font since for these sizes no designed +% fonts are easily available. +% \begin{macrocode} +%<*fd|package> +\DeclareFontShape{OMX}{cmex}{m}{n}{% +% \end{macrocode} +% According to Michael Downes `cmex5' and `cmex6' are not +% distributed currently. Therefore we use `cmex7' in those size but +% we omit a warning. +% \begin{macrocode} + <-8>sfixed * cmex7 + <8> cmex8 + <9> cmex9 + <10> <10.95> <12> <14.4> <17.28> <20.74> <24.88>cmex10 + }{} +%</fd|package> +% \end{macrocode} +% +% We also redeclare the symbol font for large symbols. This is +% already done when the base format also uses CM math fonts, but it +% doesn't hurt either. +% \begin{macrocode} +%<*package> +\DeclareSymbolFont{largesymbols}{OMX}{cmex}{m}{n} +% \end{macrocode} +% +% Finally we redefine the primitive commands |\big|, |\Big|, |\bigg| +% and |\Bigg| to change size with main size changes. To this end we +% need a new dimen register |\big@size|. +% \begin{macrocode} +\newdimen\big@size +% \end{macrocode} +% This dimen is set with every size change to $1.2$ times the height +% of a left parenthesis. +% \changes{v2.1e}{1994/11/06}{Renamed \cs{every@size} to +% \cs{every@math@size}} +% \changes{v2.1e}{1994/11/06}{Update \cs{big@size} globally} +% \changes{v2.1h}{2001/10/29}{Use box 0 within group to avoid changing this +% scratch register} +% \begin{macrocode} +\addto@hook\every@math@size{% + \begingroup + \setbox\z@\vbox{\hbox{$($}\kern\z@}% + \global\big@size 1.2\ht\z@ + \endgroup} +% \end{macrocode} +% Now we can define the macros. Note: |\n@space| sets the internal +% variables |\nulldelimiterspace| and |\mathsurround| to zero length. +% +% Older kernels (e.g in roll back didn't have LR-mode with the +% these commands) so we test for the support comment. This only works +% if the rollback request is before loading this package but that is +% where it should be. +% \changes{v2.1i}{2018/09/24}{Start LR-mode if necessary (git/49)} +% \begin{macrocode} +\ifx\leavevmode@ifvmode\@undefined +\def\bBigg@#1#2{% + {\hbox{$\left#2\vcenter to#1\big@size{}\right.\n@space$}}} +\else +\def\bBigg@#1#2{\leavevmode@ifvmode + {\hbox{$\left#2\vcenter to#1\big@size{}\right.\n@space$}}} +\fi +\def\big{\bBigg@\@ne} +\def\Big{\bBigg@{1.5}} +\def\bigg{\bBigg@\tw@} +\def\Bigg{\bBigg@{2.5}} +% \end{macrocode} +% +% \begin{macrocode} +%</package> +% \end{macrocode} +% +% \Finale +% +\endinput |