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% Copyright 1993 1994 1995 1996 1997 1998 1999
% The LaTeX3 Project and any individual authors listed elsewhere
% in this file.
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% This file is part of the LaTeX2e system.
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% It may be distributed under the terms of the LaTeX Project Public
% License, as described in lppl.txt in the base LaTeX distribution.
% Either version 1.0 or, at your option, any later version.
%
% \fi
% \iffalse
%%% From File: ltfssini.dtx
%% Copyright (C) 1989-1999 Frank Mittelbach and Rainer Sch\"opf,
%% all rights reserved.
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[1999/02/12 v3.0j LaTeX Kernel (NFSS Initialisation)]
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\documentclass{ltxdoc}
\begin{document}
\DocInput{ltfssini.dtx}
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% \CheckSum{298}
%
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% \GetFileInfo{ltfssini.dtx}
% \title{A new font selection scheme for \TeX{} macro packages\\
% (Initialisation)\thanks
% {This file has version number
% \fileversion\ dated \filedate}}
%
% \author{Frank Mittelbach \and Rainer Sch\"opf}
%
% \maketitle
%
% This file contains the top level \LaTeX\ interface to the font
% selection scheme commands. See other parts of the \LaTeX\
% distribution, or \emph{The \LaTeX\ Companion} for higher level
% documentation of these commands.
%
% \StopEventually{}
%
%
% \changes{v3.0i}{1998/08/17}{(RmS) Minor documentation fixes.}
% \changes{v3.0b}{1995/06/28}
% {(DPC) Fix documentation typos}
% \changes{v3.0a}{1995/05/24}
% {(DPC) Make file from previous file, lfonts.dtx 1995/05/23 v2.2e}
%
%
%
% \section{NFSS Initialisation}
%
% \iffalse
%<+checkmem>\CHECKMEM
% \fi
%
%
% \changes{v2.2a}{1994/10/14}{New coding for cfg files}
% \changes{v2.1a}{1993/12/03}{update for LaTeX2e}
% \changes{v1.2c}{1992/01/06}{added slitex code}
% \changes{v1.2d}{1992/03/21}{Renamed \cs{text} to \cs{nfss@text}
% to make it internal.}
% \changes{v1.2a}{1991/11/27}{All \cs{family}, \cs{shape} etc. renamed
% to \cs{fontfamily} etc.}
% \changes{v1.1i}{1990/04/02}{\cs{input} of files now handled
% by docstrip.}
% \changes{v1.1g}{1990/02/08}{Protected the commands
% \cs{family}, \cs{series},
% \cs{shape}, \cs{size}, \cs{selectfont}, and \cs{mathversion}.}
% \changes{v1.1c}{1989/12/03}{Some internal macros renamed to make them
% inaccessible.}
% \changes{v1.1b}{1989/12/02}{\cs{rmmath} renamed to \cs{mathrm}}
%
% \changes{v1.0i}{1989/11/07}{All family, series, and shape names
% abbreviated.}
% \changes{v1.0g}{1989/05/22}{Lines shortened to 72 characters}
% \changes{v1.0f}{1989/04/29}{Corrections to \LaTeX\ tabular env.
% added.}
% \changes{v1.0e}{1989/04/27}{Definitions of \LaTeX\ symbols corrected.}
% \changes{v1.0d}{1989/04/26}{\cs{xpt} added.}
% \changes{v1.0c}{1989/04/21}{Changed to conform to fam.tex.}
% \changes{v1.0b}{1989/04/15}{\cs{mathfontset} renamed to
% \cs{mathversion.}}
% \changes{v1.0a}{1989/04/10}{Starting with version numbers!
% \cs{newif} for \cs{@tempswa} added since this switch is
% unkown at the time when this file is read in.
% (latex.tex is loaded later.)
% \cs{math@famname} changed to \cs{math@version.}}
%
%
% \changes{v2.1j}{1994/05/13}{Removed file identification typeout}
%
% Finally, there are six commands that are to be used in \LaTeX{}
% and that we will therefore protect against expansion at the
% wrong point:
% |\fontfamily|, |\fontseries|, |\fontshape|, |\fontsize|,
% |\selectfont|, and |\mathversion|.
%
% \changes{v2.1i}{1994/05/12}{Moved \cs{fontfamily} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{fontencoding} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{fontseries} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{fontshape} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{fontsize} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{mathversion} to fam.dtx}
% \changes{v2.1i}{1994/05/12}{Moved \cs{selectfont} to tracefnt.dtx}
%
%
%
% \subsection{Providing math \emph{versions}}
%
% \LaTeX{} provides two \emph{versions}. We call them
% \textsf{normal} and \textsf{bold}, respectively.
% \begin{macrocode}
\DeclareMathVersion{normal}
\DeclareMathVersion{bold}
% \end{macrocode}
%
%
% Now we define the standard font change commands.
% We don't allow the use of |\rmfamily| etc.\ in math mode.
%
% First the changes to another \emph{family}:
% \begin{macrocode}
\DeclareRobustCommand\rmfamily
{\not@math@alphabet\rmfamily\mathrm
\fontfamily\rmdefault\selectfont}
\DeclareRobustCommand\sffamily
{\not@math@alphabet\sffamily\mathsf
\fontfamily\sfdefault\selectfont}
\DeclareRobustCommand\ttfamily
{\not@math@alphabet\ttfamily\mathtt
\fontfamily\ttdefault\selectfont}
% \end{macrocode}
% Then the commands changing the \emph{series}:
% \begin{macrocode}
\DeclareRobustCommand\bfseries
{\not@math@alphabet\bfseries\mathbf
\fontseries\bfdefault\selectfont}
\DeclareRobustCommand\mdseries
{\not@math@alphabet\mdseries\relax
\fontseries\mddefault\selectfont}
\DeclareRobustCommand\upshape
{\not@math@alphabet\upshape\relax
\fontshape\updefault\selectfont}
% \end{macrocode}
% Then the commands changing the \emph{shape}:
% \begin{macrocode}
\DeclareRobustCommand\slshape
{\not@math@alphabet\slshape\relax
\fontshape\sldefault\selectfont}
\DeclareRobustCommand\scshape
{\not@math@alphabet\scshape\relax
\fontshape\scdefault\selectfont}
\DeclareRobustCommand\itshape
{\not@math@alphabet\itshape\mathit
\fontshape\itdefault\selectfont}
% \end{macrocode}
%
%
%
% We also have to define the {\em emphasize\/} font change command
% (i.e.\ |\em|). This command will look is the current font is
% sloped (i.e.\ has a positive |\fontdimen1|) and will then
% select either |\upshape| or |\itshape|.
% \changes{v1.2b}{1990/01/28}{Call to \cs{@nomath} added.}
% \begin{macrocode}
\DeclareRobustCommand\em
{\@nomath\em \ifdim \fontdimen\@ne\font >\z@
\upshape \else \itshape \fi}
% \end{macrocode}
%
%
% \begin{macro}{\not@math@alphabet}
% This function generates an error message when it is called in
% math mode. The same function should be defined in
% \texttt{newlfont.sty}.
% \changes{v1.4d}{1992/09/21}{Macro defined.}
% \changes{v2.1e}{1994/01/17}{Message changed}
% \changes{v2.1f}{1994/01/18}{Message corrected}
% \changes{v2.1g}{1994/04/22}{Message changed again}
% \changes{v2.2d}{1995/04/02}{add \cs{noexpand} to second part of message}
% \begin{macrocode}
\def\not@math@alphabet#1#2{%
\relax
\ifmmode
\@latex@error{Command \noexpand#1invalid in math mode}%
{%
Please
\ifx#2\relax
define a new math alphabet^^J%
if you want to use a special font in math mode%
\else
% \end{macrocode}
% We have to a |\noexpand| below to prevent expansion of |#2|. In
% case of |#1| we can omit this (due to the current definition of
% robust commands since they do come out right there :-).
% \begin{macrocode}
use the math alphabet \noexpand#2instead of
the #1command%
\fi
.
}%
\fi}
% \end{macrocode}
% \end{macro}
%
%
%
% Finally we provide two abbreviations to switch to the \LaTeX{}
% \emph{versions}.
% \begin{macrocode}
\def\boldmath{\@nomath\boldmath
\mathversion{bold}}
\def\unboldmath{\@nomath\unboldmath
\mathversion{normal}}
% \end{macrocode}
% Here we switch to the default math version by defining the internal
% macro |\math@version|. We dare not to call |\mathversion|
% at this place because this would call |\glb@settings|.
% \begin{macrocode}
\def\math@version{normal}
% \end{macrocode}
%
% \subsection{Miscellaneous}
%
% \begin{macro}{\newfont}
% \changes{v1.2g}{1991/03/30}{Definition added.}
% \changes{v2.2e}{1995/05/23}{Font assignment made local again.}
% \begin{macro}{\symbol}
% \changes{v1.2g}{1991/03/30}{Definition added.}
% We start by defining a few macros that are part of
% standard \LaTeX's user interface. The use of these functions is
% not encouraged, but they will allow to process older documents
% without changes to the source.
% \begin{macrocode}
\def\newfont#1#2{\@ifdefinable#1{\font#1=#2\relax}}
\def\symbol#1{\char #1\relax}
% \end{macrocode}
% \end{macro}
% \end{macro}
%
% \begin{macro}{\@setfontsize}
% \begin{macro}{\@setsize}
% This abbreviation is used by \LaTeX's user level size changing
% commands, such as |\large|.
% \begin{macrocode}
\def\@setfontsize#1#2#3{\@nomath#1%
% \end{macrocode}
% For the benefit of people relying on keeping the name of the
% current font command saved in |\@currsize| we define it. To ensure
% that |\@setfontsize| keeps being robust we omit this assignment
% during times where |\protect| differs from |\@typeset@protect|.
% \changes{v1.4b}{1992/08/20}{Added \cs{@currsize}.}
% \changes{v2.2b}{1994/11/06}{Use \cs{@typeset@protect}}
% \begin{macrocode}
\ifx\protect\@typeset@protect
\let\@currsize#1%
\fi
\fontsize{#2}{#3}\selectfont}
% \end{macrocode}
% For compatibility we also define |\@setsize| the 209 command
% \begin{macrocode}
%<*compat>
\def\@setsize#1#2#3#4{\@setfontsize#1{#4}{#2}}
%</compat>
% \end{macrocode}
% \end{macro}
% \end{macro}
%
%
% \begin{macro}{\oldstylenums}
% This macro implements old style numerals but only works if we
% assume that the standard math fonts are used. Thus it needs
% changing in case other math encodings are used.
% \begin{macrocode}
\def\oldstylenums#1{%
\begingroup
% \end{macrocode}
% Provide spacing using the interword space of the current font.
% \begin{macrocode}
\spaceskip\fontdimen\tw@\font
% \end{macrocode}
% Then switch to the math italic font. We don't change the current
% value of |\f@series| which means that you can use bold numerals
% if |\bfseries| is in force. As family we use |\rmdefault| which
% means that this only works if there exist an |OML| encoded
% version of that font or rather a corresponding |.fd| file (which
% is the case for standard \LaTeX{} fonts even though they only
% contain substitutions).
% \changes{v3.0j}{1999/02/12}{Use \cs{rmdefault} instead of \texttt{cmm}
% (pr/2954)}
% \begin{macrocode}
\usefont{OML}{\rmdefault}{\f@series}{it}%
\mathgroup\symletters #1%
\endgroup
}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\hexnumber@}
% To set up \LaTeX's special math character
% definitions we first provide a macro to generate hexadecimal
% numbers. It is a rather simple |\ifcase|.
% \changes{v?}{1992/11/13}{Made expandable.}
% \changes{v?}{1992/12/03}{Make it accept counters.}
% \begin{macrocode}
\def\hexnumber@#1{\ifcase\number#1
0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or 8\or
9\or A\or B\or C\or D\or E\or F\fi}
% \end{macrocode}
% \end{macro}
%
%
%
% \begin{macro}{\nfss@text}
% \changes{v1.1e}{1990/01/25}{Macro added.}
% In it simplest form |\nfss@text| is an |\mbox|. This will
% produce unbreakable text outside math and inside math you will
% get text with the same fonts as outside. The only drawback is
% that such item won't change sizes in subscripts. But this
% behavior can be easily changed. With the \texttt{amstex} style
% option one will get a sub style called \texttt{amstext} which will
% redefine the |\nfss@text| macro to produce correct text in all
% sizes.
%
% We have to use |\def| instead of the shorter |\let| since
% |\mbox| is undefined when we reach this point.
% \changes{v1.1k}{1990/06/23}{Changed to \cs{mbox}.}
% \changes{v2.1n}{1994/05/17}{Added braces to allow use in subscripts}
% \begin{macrocode}
\def\nfss@text#1{{\mbox{#1}}}
% \end{macrocode}
% \end{macro}
%
% \begin{macro}{\copyright}
% The definition of |\copyright| was changed so
% that it works in other type styles,
% and to make it robust. We leave the family untouched so that
% the copyright notice will come out differently if a different
% font family is in use.
% This command is commented out, since it is now defined in
% ltoutenc.dtx.
% \changes{v1.1m}{1991/03/28}{Extra braces added.}
% \changes{v2.1n}{1994/05/17}{Really add extra braces}
% \changes{v2.2c}{1994/12/02}{\cs{copyright} is now in ltoutenc.
% ASAJ}
% \begin{macrocode}
%\DeclareRobustCommand\copyright
% {{\ooalign{\hfil
% \raise.07ex\hbox{\mdseries\upshape c}\hfil\crcr
% \mathhexbox20D}}}
% \end{macrocode}
% \end{macro}
%
% \changes{v2.1a}{1993/11/24}{Removed \cs{xpt} stuff}
%
%
% \begin{macro}{\normalfont}
% \changes{v2.1a}{1993/11/11}{Macro added}
% \begin{macro}{\reset@font}
% \begin{macro}{\p@reset@font}
% \changes{v1.1n}{1991/08/26}{Macro introduced}
% The macro |\reset@font| is used in \LaTeX{} to switch to a standard
% font, in order to initialize the current font in situations where
% typesetting is done in a new visual context (e.g.\ in a
% footnote). We define it here to allow the test for the new
% \LaTeX{} version above but nevertheless are able to run all kind
% of mixtures.
% \changes{v1.1o}{1991/11/21}{Changed to protected version of macro.}
% \changes{v1.1o}{1991/11/21}{Added extra braces for robustness.}
%
% The user interface name for |\reset@font| is |\normalfont|:
% \changes{v2.1k}{1994/05/14}{Remove surplus braces}
% \changes{v3.0f}{1995/10/16}{Added \cs{relax} after \cs{usefont},
% as the latter eats up spaces.}
% \begin{macrocode}
\DeclareRobustCommand\normalfont
{\usefont\encodingdefault
\familydefault
\seriesdefault
\shapedefault
\relax}
\let\reset@font\normalfont
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
%
%
% We left out the special \LaTeX{} fonts which are not automatically
% included in the base version of the font selection since these fonts
% contain only a few characters which are also included in the AMS
% fonts so anybody who is using these fonts doesn't need them.
% But for compatibility reasons we will define these symbols.
%
% \changes{v2.1g}{1994/02/22}{Correct error mssage}
% \begin{macrocode}
\def\not@base#1{\@latex@error
{Command \noexpand#1not provided in base LaTeX2e}%
{Load the latexsym or the amsfonts package to
define this symbol}}
\def\mho{\not@base\mho}
\def\Join{\not@base\Join}
\def\Box{\not@base\Box}
\def\Diamond{\not@base\Diamond}
\def\leadsto{\not@base\leadsto}
\def\sqsubset{\not@base\sqsubset}
\def\sqsupset{\not@base\sqsupset}
\def\lhd{\not@base\lhd}
\def\unlhd{\not@base\unlhd}
\def\rhd{\not@base\rhd}
\def\unrhd{\not@base\unrhd}
% \end{macrocode}
%
%
%
% We now initialize all variables set by |\DeclareErrorFont|. These
% values are not really important since they will be overwritten
% later on by the definition in |fontdef.ltx|.
%
% However, if \texttt{fontdef.cfg} is corrupted then at least a
% hopefully suitable error font is present.
%
% \changes{v2.1k}{1994/05/14}{Init error font just before checking for
% fontdef.cfg}
% \begin{macrocode}
\DeclareErrorFont{OT1}{cmr}{m}{n}{10} %%% don't modify this setting
%%% overwrite it in fontdef.cfg
%%% if necessary
% \end{macrocode}
%
%
%
%
% We now load the customizable parts of NFSS.
% \changes{v3.0d}{1995/07/19}
% {(DPC) TeX2 support}
% \changes{v3.0e}{1995/09/15}
% {(DPC) Modify TeX2 message}
% \changes{v3.0g}{1995/11/01}
% {(DPC) Switch meaning of \cs{@addtofilelist} for cfg files}
% \changes{v3.0h}{1996/12/06}
% {(DPC) Remove *** from messages internal/2338}
% \begin{macrocode}
\ifnum\inputlineno=\m@ne
% \end{macrocode}
% Still using \TeX2. need a configuration file to avoid setting the 8bit
% characters.
% \begin{macrocode}
\InputIfFileExists{fonttext.cfg}
{\typeout{====================================^^J%
^^J%
Local config file fonttext.cfg used^^J%
^^J%
====================================}%
\def\@addtofilelist##1{\xdef\@filelist{\@filelist,##1}}%
}
{\typeout{!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!^^J%
!^^J%
! You MUST use a fonttext.cfg file!^^J%
! As you are still using TeX2!!!!!^^J%
!^^J%
! See the documentation file tex2.txt^^J%
!^^J%
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}%
\batchmode \@@end}
\else
% \end{macrocode}
% With \TeX3 can use the standard |ltx| file if no configuration file
% exists.
% \begin{macrocode}
\InputIfFileExists{fonttext.cfg}
{\typeout{====================================^^J%
^^J%
Local config file fonttext.cfg used^^J%
^^J%
====================================}%
\def\@addtofilelist##1{\xdef\@filelist{\@filelist,##1}}%
}
{\input{fonttext.ltx}}
\fi
\let\@addtofilelist\@gobble
% \end{macrocode}
%
% Ditto for math although I don't that we will get a lot of
% customisation :-)
% \begin{macrocode}
\InputIfFileExists{fontmath.cfg}
{\typeout{====================================^^J%
^^J%
Local config file fontmath.cfg used^^J%
^^J%
====================================}%
\def\@addtofilelist##1{\xdef\@filelist{\@filelist,##1}}%
}
{\input{fontmath.ltx}}
\let\@addtofilelist\@gobble
% \end{macrocode}
%
% Then we preload several fonts. This file might be customized
% \emph{without} changing the behavior of the format (i.e.\ necessary
% font definitions will be loaded at runtime if they are not
% preloaded). This is done in the file \texttt{preload.ltx}.
% \begin{macrocode}
\InputIfFileExists{preload.cfg}
{\typeout{====================================^^J%
^^J%
Local config file preload.cfg used^^J%
^^J%
=====================================}%
\def\@addtofilelist##1{\xdef\@filelist{\@filelist,##1}}%
}
{\input{preload.ltx}}
\let\@addtofilelist\@gobble
% \end{macrocode}
%
%
% \begin{macro}{\@acci}
% \begin{macro}{\@accii}
% \begin{macro}{\@acciii}
% \changes{v2.1m}{1994/05/16}{Define saved versions of accents}
% We also save the values of some accents in |\@acci|, |\@accii|
% and |\@acciii| so they can be restored by a |minipage| inside a
% |tabbing| environment.
% \begin{macrocode}
\let\@acci\' \let\@accii\` \let\@acciii\=
% \end{macrocode}
% \end{macro}
% \end{macro}
% \end{macro}
%
%
% \begin{macro}{\cal}
% \changes{v3.0a}{1995/05/24}
% {(DPC) Remove definition}
% \begin{macro}{\mit}
% \changes{v3.0a}{1995/05/24}
% {(DPC) Remove definition}
% Here were the two old \meta{alphabet identifiers}.
% \end{macro}
% \end{macro}
%
%
% \iffalse
%<+checkmem>\CHECKMEM
% \fi
%
% \Finale
%
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