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TeX 1995 July
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TeX CD-ROM July 1995 (Disc 1)(Walnut Creek)(1995).ISO
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macros
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lollipop
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fonts.tex
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1993-01-28
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% Fonts.tex copyright 1992/3 Victor Eijkhout
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%% Font selection macros %%%%%%%%%%%
%%%% Text Fonts
\NewTrace:font
% User commands to change the three parameters
% \Typeface:FACE
% \F@name <-- FACE
\def\Typeface:#1
{\if\UndefinedCS{#1@code}\Wmessage{Undefined typeface: `#1'}\fi
\def\F@name{#1}}
\let\TypeFace\Typeface
% \Pointsize:NN
% \F@size <-- NN
% compute script/sscript sizes
% if necessary install math fonts
\def\PointSize:#1 {\tempcounta=\@ww{#1}%
\edef\F@size{\the\tempcounta}%this line is used in \set@mathfont
\xp\@setsizes\xp{\F@size}%
\xp\pointsize@baselineskip\xp{\F@size}}
\let\Pointsize=\PointSize
% \Style:STYLE
% \F@style <-- STYLE
% load actual font
% put font in \textfont0
% install value of \@space
\def\Style:#1 {\def\F@style{#1}%
\ifmmode\SetFamily\else\SetFont\fi}
\def\ifStyle:#1 {\xp\if\xp\EqualStringX\xp{\F@style}{#1}}
% and together this makes:
\def\current@font{\F@name\F@style\romannumeral\F@size}
% abbreviations for common styles
\def\italic{\Style:italic }\def\roman{\Style:roman }
\def\bold{\Style:bold }\def\tty{\Style:tty }
\let\rm=\roman \let\bf=\bold \let\it=\italic \let\sl=\italic
% Command for actual loading is also user command.
% If this is in a style definition, fill the math families.
\def\SetFont{\maybe@load@font
\if@started\else\store@main@font\fi
\ifx\cs@a\relax %error condition if load not succeeded
\else \csname\cs@a\endcsname
\@@space=.5em\relax
\fi}
\def\maybe@load@font{\edef\cs@a{\current@font}%
\if\UndefinedCS{\cs@a}\load@font\fi}
\def\load@font{\def@f@ext@name
\Tmessage[font]{Loading font (text): \cs@a=`\f@ext@name'}%
\edef\cs@e{\global\font\CSname{\cs@a}=\f@ext@name\relax}\cs@e
}
\def\def@f@ext@name
{\edef\f@ext@name{\ext@combo}%
\edef\f@ext@name{\ext@name
\ifx\f@ext@name\@empty \ext@style\ext@size
\else \f@ext@name \fi}}
\def\face@tag{\F@name @code}
\def\cs@face@tag{\csname\face@tag\endcsname}
% Find relative sizes of the current size
% and install math fonts
\def\@ps@rls#1{ps@rls\romannumeral#1}
\def\PointSizeScriptSizes:#1=#2,#3,#4
{\csarg\def{\@ps@rls#1}{{#2}{#3}{#4}}}
\def\@setsizes#1{\if\UndefinedCS{\@ps@rls{#1}}\tempcounta#1\relax
\tempcountb\tempcounta \multiply\tempcountb7 \divide\tempcountb10
\tempcountc\tempcounta \divide\tempcountc2
\edef\@@setsizes
{{\the\tempcounta}{\the\tempcountb}{\the\tempcountc}}%
\else
\edef\@@setsizes{\csname\@ps@rls{#1}\endcsname}%
\fi
\expandafter\@setsize\@@setsizes}
\PointSizeScriptSizes:0=0,0,0
\PointSizeScriptSizes:1=1,1,1
\PointSizeScriptSizes:2=2,2,2
\PointSizeScriptSizes:3=2,3,3
\PointSizeScriptSizes:4=4,4,4
\PointSizeScriptSizes:5=5,5,5
\PointSizeScriptSizes:6=6,5,5
\PointSizeScriptSizes:7=7,6,5
\PointSizeScriptSizes:8=8,6,5
\PointSizeScriptSizes:9=9,7,5
\PointSizeScriptSizes:10=10,7,5
\PointSizeScriptSizes:11=11,8,6
% Fill in a math font family corresponding to the
% surrounding size
\def\SetFamily{\ifface@size@changed\begingroup
%\tracingmacros=2 \tracingcommands\tracingmacros
\edef\tmp@sizes{\csname\@ps@rls{\F@size}\endcsname}
\edef\F@size{\xp\first@of@three\tmp@sizes}\maybe@load@font
\edef\cs@e{\global\textfont
\CSname{\F@style @fam}\CSname{\cs@a}}\cs@e
\edef\F@size{\xp\second@of@three\tmp@sizes}\maybe@load@font
\edef\cs@e{\global\scriptfont
\CSname{\F@style @fam}\CSname{\cs@a}}\cs@e
\edef\F@size{\xp\third@of@three\tmp@sizes}\maybe@load@font
\edef\cs@e{\global\scriptscriptfont
\CSname{\F@style @fam}\CSname{\cs@a}}\cs@e
\endgroup\fi
\csarg\fam{\F@style @fam}}
\newfam\roman@fam \def\roman@face@size{{foo}{bar}}
\newfam\italic@fam \def\italic@face@size{{foo}{bar}}
\newfam\bold@fam \def\bold@face@size{{foo}{bar}}
\newfam\tty@fam \def\tty@face@size{{foo}{bar}}
\def\ifface@size@changed{\iftrue}
\def\temporarily@out@of@order
{\edef\cs@a{\csn\F@style @face@size\ecs}
\if\EqualString{\F@name}{\xp\take@former\cs@a}
\if\EqualString{\F@size}{\xp\take@latter\cs@a}
\csn iffalse\xp\xp\xp\ecs
\else \Tmessage[font]{Loading family <\F@style>}
\csarg\edef{\F@style @face@size}%
{{\F@name}{\F@size}}
\csn iftrue\xp\xp\xp\ecs\fi
\else \Tmessage[font]{Loading family <\F@style>}
\csarg\edef{\F@style @face@size}%
{{\F@name}{\F@size}}
\csn iftrue\xp\ecs \fi}
% Define relative sizes,
% and install math fonts,
% loading if necessary
\def\@setsize#1#2#3{%
\def\normal{\def\F@size{#1}\SetFont}\relax
\def\script{\def\F@size{#2}\SetFont}\relax
\def\scriptscript{\def\F@size{#3}\SetFont}\relax
\def\style@sizes{#1,#2,#3 }}
\newif\ifloading@math
\def\math@setsize#1,#2,#3 {%
\SaveFont \loading@mathyes
\set@mathfont{#1}\textfont
\set@mathfont{#2}\scriptfont
\set@mathfont{#3}\scriptscriptfont
\RestoreFont \loading@mathno
}
% these lines are in 'text.tex'
%\everymath{\the\every@everymath}
%\everydisplay{\the\every@everymath}
%\every@everymath{\high@fam\count18\relax \xp\math@setsize\style@sizes}
% Strut: .8\baselineskip+.2\baselineskip
% note: struts should be locally defined!
\def\make@strut{\tempdima=.8\baselineskip \tempdimb=.2\baselineskip
\edef\strut{\vrule height \the\tempdima width \z@
depth \the\tempdimb \relax}}
% Main Font
% is the font that's current at the end of the style definition
% this is switched to in the output routine (head/footline!)
% and the user can use it too.
% this does not take properly care of baselineskip and strut.
% nor math fonts, come to think of it.
\def\store@main@font
{\edef\MainFace{\def\nxp\F@name{\F@name}}
\SaveFont \let\MainFont\RestoreFont}
\let\MainFont\relax %cs is used in output@setup, which may be called
%from Lollipop.tex
% Save and restore fonts
\def\SaveFont
{\edef\RestoreFont{\def\nxp\F@name{\F@name}%
\def\nxp\F@size{\F@size}%
\def\nxp\F@style{\F@style}%
\nxp\SetFont
\baselineskip=\the\baselineskip\relax
}
}
\def\RestoreFont{\Wmessage{No `Savefont' has been given}}
% Defined Fonts
% rather limited, because not upscalable.
\def\DefineFont:#1=#2,#3,#4 {\begingroup
\Typeface:#2 \PointSize:#3 \Style:#4
\edef\cs@e{\global\let\CSname{#1}=\CSname{\current@font}}\cs@e
\endgroup}
% Increase / decrease point size
\def\PointSizeLarger{\if\NextChar[%]
\ps@plus{\ps@plus[1]}}
\def\PointSizeSmaller{\if\NextChar[%]
\ps@minus{\ps@minus[1]}}
\def\ps@plus[#1]{\let\save@F@size\F@size
\tempcounta\F@size\relax \advance\tempcounta#1\relax
\edef\F@size{\the\tempcounta}\SetFont
\let\F@size\save@F@size}
\def\ps@minus[{\ps@plus[-%]
}%]
% Baselineskip
\def\BaselineSkip:#1 {\baselineskip\@ww{#1}\make@strut}
\def\@ps@bls#1{ps@bls\romannumeral#1}
\def\@@ps@bls#1{\tempcounta#1\relax\baselineskip\tempcounta pt
\baselineskip\bls@ps@ratio\baselineskip\relax}
\def\BaselineSkipPointSizeRatio:#1 {\def\bls@ps@ratio{#1}}
\BaselineSkipPointSizeRatio:1.2
\def\PointSizeBaselineSkip:#1
{\edef\cs@e{\nxp\pointsize@baselineskip{\w@w{#1}}}\cs@e}%nxp?
\def\pointsize@baselineskip#1{%also used in \PointSize
\if\UndefinedCS{\@ps@bls{#1}}\@@ps@bls{#1}%
\else \baselineskip\csname \@ps@bls{#1}\endcsname \fi
\make@strut}
\def\SetPointSizeBaselineSkip:#1=#2
{\edef\cs@e{\w@w{#1}}%
\csarg\edef{\@ps@bls\cs@e}{\w@w{#2}}}
\def\exblssizes#1{\ifcase#1\z@ \or \z@ \or \z@ \or \z@ \or \z@
\or 6.1pt %5
\or 7.3pt %6
\or 8.5pt %7
\or 9.7pt %8
\or 11pt %9
\or 12pt %10
\or 13pt %11
\or 14.5pt %12
\or 15.6pt %13
\or 16.8pt %14
\or 18pt %15
\or 19.2pt %16
\or 20.4pt %17
\or 21.6pt %18
\or 22.8pt %19
\or 24pt %20
\else \ifnum#1=24 28pt \else
\ifnum#1=30 36pt \else
\ifnum#1=32 38pt \else
\ifnum#1=48 56pt \else
\z@ \Emessage{Unknown pointsize: #1}\fi\fi\fi\fi
\fi \normalbaselineskip\baselineskip}
%%%% Math Fonts
% Math fonts are loaded through the \everymath and \everydisplay.
% This means that they are undefined outside math.
% Therefore, any load during the style definition is global.
% Symbol and extension fonts don't change with type
% Control sequences \m@.. are \let to 0 or 1 to indicate that
% math at a certain size has been loaded
% The ten point extension font is special because it is used
% for all smaller sizes
\font\exx=cmex10
% Size to external name conversion for math fonts
\def\mi@size#1{\ifcase#1 \or \or \or \or \or 5\or 6\or 7\or 8\or
9\or 10\or 10 \sc@led \magstephalf \or 10 \sc@led \magstep1\or
\or 10 \sc@led \magstep2\or \or 10 \sc@led \magstep3\or
\or 10 \sc@led \magstep3\or \or 10 \sc@led \magstep4\fi}
\let\sy@size=\mi@size \let\cm@size=\mi@size
\def\ex@size#1{\ifnum#1<10 10 \else\mi@size{#1}\fi}
% For a size, test if it has been loaded yet, if not do;
% then install as given style
\def\set@mathfont#1#2%% #1=size #2=\text/script/scriptscript style
{\if\UndefinedCS{m@\romannumeral#1}\begingroup
\Tmessage[font]{Loading math style \string#2 at #1pt}%\globaldefs\@ne
\load@mathfammember{cm}{MathIT}{mi}{#1}\mi@size{'177}\relax
\load@mathfammember{cm}{MathSY}{sy}{#1}\sy@size{'060}\relax
\load@mathfammember{cm}{MathRM} {r}{#1}\cm@size{-1}\relax
\ifnum#1>10 \load@mathfammember{cm}{MathEX}{ex}{#1}\ex@size{-1}\relax
\else \global\csarg\let{MathEX\romannumeral#1}\exx
\fi
\global\csarg\let{m@\romannumeral#1}1\relax
\endgroup\fi
\if\UndefinedCS{\F@name VMI\romannumeral#1}\begingroup
\def\F@size{#1}\def\F@style{mitalic}%
\load@mathfammember{\cs@face@tag}
{\F@name VMI}{\ext@style}{#1}
{\ext@size\take@one}{-1}\relax
\endgroup\fi
\def\F@size{#1}\SetFont #20\the\font
#21 \csname MathIT\romannumeral#1\endcsname
#22 \csname MathSY\romannumeral#1\endcsname
#23 \csname MathEX\romannumeral#1\endcsname
#2\Kgriek \csname MathRM\romannumeral#1\endcsname
#2\VMIfam \csname \F@name VMI\romannumeral#1\endcsname}
\def\load@mathfammember
#1#2#3#4#5#6%
%% #1=root of external name #2=internal tag
%% #3=external tag #4=size #5=size convertor #6=skew character
{\Tmessage[font]{Loading font (math)
\csname#2\romannumeral#4\endcsname=#1#3#5{#4}}%
\global\xp\font\csname#2\romannumeral#4\endcsname=
#1#3#5{#4}\relax
\global\xp\skewchar\csname#2\romannumeral#4\endcsname=#6\relax
% Allocate a family for cmr, which has Greek capitals
\storecat"
\ifini{\newfam\Kgriek}
\mathchardef\Gamma="0\hexdigit\Kgriek 00
\mathchardef\Delta="0\hexdigit\Kgriek 01
\mathchardef\Theta="0\hexdigit\Kgriek 02
\mathchardef\Lambda="0\hexdigit\Kgriek 03
\mathchardef\Xi="0\hexdigit\Kgriek 04
\mathchardef\Pi="0\hexdigit\Kgriek 05
\mathchardef\Sigma="0\hexdigit\Kgriek 06
\mathchardef\Upsilon="0\hexdigit\Kgriek 07
\mathchardef\Phi="0\hexdigit\Kgriek 08
\mathchardef\Psi="0\hexdigit\Kgriek 09
\mathchardef\Omega="0\hexdigit\Kgriek 0A
% Math italic variables have to be from the current typeface
% maybe this should be switchable
\def\loop@redef@until#1{
\loop \mathcode\tempcountb\tempcountc
\advance\tempcountb\@ne
\advance\tempcountc\@ne
\ifnum\tempcountb>#1\relax\else \repeat}
\ifini{
\newfam\VMIfam
\tempcounta=-"100 \advance\tempcounta"\hexdigit\VMIfam00
\tempcountb=`a \tempcountc=\mathcode`a
\advance\tempcountc\tempcounta
\loop@redef@until{`z}
\tempcountb=`A \tempcountc=\mathcode`A
\advance\tempcountc\tempcounta
\loop@redef@until{`Z}
\restorecat"
\def\cal{\fam2}
% Typewriter is a bit of a problem
\font\ttix=cmtt9
\font\ttx=cmtt10 \font\ttxi=cmtt10 \sc@led \magstephalf
\font\ttxii=cmtt10 \sc@led \magstep1
\font\ttxiv=cmtt10 \sc@led \magstep2
\font\ttxvii=cmtt10 \sc@led \magstep3
\font\ttxx=cmtt10 \sc@led \magstep4
\def\tt{\Typeface:ComputerModern \Style:tty }
\def\terugstreep{{\tt \char`\\}}
% Typeface Definition
% \DefineTypeface{Naam}{rump}{style:exts}{size:exts}{combo:exts}
% after this \Typeface:Naam can be used
% the rump and the extension construct the external file names
\def\DefineTypeface#1#2#3#4{\csarg\def{#1@code}{#2}
\csarg\def{#1@styles}{#3 }
\csarg\def{#1@sizes}{#4 }
\if\NextChar[%]
{\DefineTypeface@combos{#1}}{\DefineTypeface@combos{#1}[]}}
\def\DefineTypeface@combos#1[#2]{\csarg\def{#1@combos}{#2}}
\def\style@selector{\mswitch \xp\if\xp\EqualStringX\xp{\F@style} in: }
\def\a@style@selector#1{\mswitch \xp\if\xp\EqualStringX\xp{#1} in: }
\def\size@selector{\fswitch {\ifnum\F@size} in: }
\def\a@size@selector#1{\fswitch {\ifnum#1} in: }
\def\ext@combo{\csname\F@name @combos\endcsname}
\def\ext@style{\xp\xp\xp\style@selector
\csname\F@name @styles\endcsname\endswitch}
\def\ext@size {\xp\xp\xp\size@selector
\csname\F@name @sizes\endcsname\endswitch}
\def\ext@name{\csname\F@name @code\endcsname}
%\noeol
% good (?) old Computer Modern
\DefineTypeface{ComputerModern}{cm}%
{roman:r; slant:sl; italic:ti; mitalic:mi; bold:bx; tty:tt;
default:r;}%
{<6:5; <7:6; <8:7; <9:8; <10:9; <11:10; <12:10 \sc@led\magstephalf;
<14:10 \sc@led\magstep1; <16:10 \sc@led\magstep2;
<20:10 \sc@led\magstep3; >19:10 \sc@led\magstep4;
default:10;}%
[\ifStyle:italic \ifnum\F@size<7 ti7\fi\fi
\ifStyle:tty \ifnum\F@size<8 tt8\fi\fi]
\DefineTypeface{ComputerSans}{cmss}%
{roman:; italic:i; mitalic:i; bold:bx; demiboldcondensed:dc;
default:;}%
{<9:8; <10:9; <11:10; <12:10 \sc@led\magstephalf;
<14:10 \sc@led\magstep1; <16:10 \sc@led\magstep2;
<20:10 \sc@led\magstep3; >19:10 \sc@led\magstep4;
default:10;}%
[\ifStyle:bold \ifnum\F@size<10 bx10\fi\fi]
% MonoType
\DefineTypeface{MTGill}{MGilSan}
{roman:; italic:Ita; mitalic:Ita; bold:Bol;
lite:Lig; litital:LigIta; default:;}
{default: at \F@size pt;}
% Postscript
\DefineTypeface{macTimes}{Times}
{roman:; italic:I; mitalic:I; bold:B; default:;}
{default: at \F@size pt;}
\DefineTypeface{macHelvetica}{Helvetica}
{roman:; italic:I; mitalic:I; bold:B; default:;}
{default: at \F@size pt;}
\DefineTypeface{macCourier}{cour}
{roman:; italic:i; mitalic:i; bold:b; default:;}
{default: at \F@size pt;}
\DefineTypeface{unixTimes}{Times}
{roman:; italic:I; mitalic:I; bold:B; default:;}
{default: at \F@size pt;}
\DefineTypeface{unixHelvetica}{Helvetica}
{roman:; italic:I; mitalic:I; bold:B; default:;}
{default: at \F@size pt;}
\DefineTypeface{unixCourier}{cour}
{roman:; italic:i; mitalic:i; bold:b; default:;}
{default: at \F@size pt;}
\endinput
92/11/05 math family setting