| blob | 5d6baba0aaba4d56390725ede7df160a0cfbc007 |
1 % \iffalse meta-comment
2 %
3 % Copyright 1993-2015
4 % The LaTeX3 Project and any individual authors listed elsewhere
5 % in this file.
6 %
7 % This file is part of the LaTeX base system.
8 % -------------------------------------------
9 %
10 % It may be distributed and/or modified under the
11 % conditions of the LaTeX Project Public License, either version 1.3c
12 % of this license or (at your option) any later version.
13 % The latest version of this license is in
14 % http://www.latex-project.org/lppl.txt
15 % and version 1.3c or later is part of all distributions of LaTeX
16 % version 2005/12/01 or later.
17 %
18 % This file has the LPPL maintenance status "maintained".
19 %
20 % The list of all files belonging to the LaTeX base distribution is
21 % given in the file `manifest.txt'. See also `legal.txt' for additional
22 % information.
23 %
24 % The list of derived (unpacked) files belonging to the distribution
25 % and covered by LPPL is defined by the unpacking scripts (with
26 % extension .ins) which are part of the distribution.
27 %
28 % \fi
29 %\iffalse % this is a METACOMMENT !
30 %
31 %% File `oldlfont.dtx'.
32 %% Copyright (C) 1989-1995 Frank Mittelbach and Rainer Sch\"opf,
33 %% all rights reserved.
34 %
35 %<*dtx>
36 \ProvidesFile{oldlfont.dtx}
37 %</dtx>
38 %<package>\NeedsTeXFormat{LaTeX2e}
39 %<package>\ProvidesPackage{oldlfont}
40 %<driver> \ProvidesFile{oldlfont.drv}
41 %<*!latex209>
42 % \fi
43 % \ProvidesFile{oldlfont.dtx}
44 [2014/09/29 v2.2k Standard LaTeX package]
45 %
46 % \iffalse
47 %</!latex209>
48 %<*driver>
49 \documentclass{ltxdoc}
50 \begin{document}
51 \DocInput{oldlfont.dtx}
52 \end{document}
53 %</driver>
54 % \fi
55 %
56 % \CheckSum{117}
57 %
58 %% \CharacterTable
59 %% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
60 %% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
61 %% Digits \0\1\2\3\4\5\6\7\8\9
62 %% Exclamation \! Double quote \" Hash (number) \#
63 %% Dollar \$ Percent \% Ampersand \&
64 %% Acute accent \' Left paren \( Right paren \)
65 %% Asterisk \* Plus \+ Comma \,
66 %% Minus \- Point \. Solidus \/
67 %% Colon \: Semicolon \; Less than \<
68 %% Equals \= Greater than \> Question mark \?
69 %% Commercial at \@ Left bracket \[ Backslash \\
70 %% Right bracket \] Circumflex \^ Underscore \_
71 %% Grave accent \` Left brace \{ Vertical bar \|
72 %% Right brace \} Tilde \~}
73 %
74 %
75 %
76 % \providecommand\dst{\expandafter{\normalfont\scshape docstrip}}
77 %
78 % \GetFileInfo{oldlfont.dtx}
79 %
80 % \title{The file \texttt{oldlfont.dtx} for use with
81 % \LaTeXe.\thanks{This file has version
82 % number \fileversion, dated \filedate.}\\[2pt]
83 % It contains the code for \texttt{oldlfont.sty}}
84 %
85 % \author{Frank Mittelbach}
86 %
87 % \MaintainedByLaTeXTeam{latex}
88 % \maketitle
89 %
90 % \section{Introduction}
91 %
92 % This file contains the code for the \texttt{oldlfont} package
93 % which emulates the following \LaTeX~2.09 font commands:
94 % \begin{itemize}
95 % \item The two-letter font-changing commands |\rm|, etc.~are
96 % defined to cancel each other out as they did in \LaTeX~2.09.
97 % \item The two-letter font-changing commands are allowed in math
98 % mode.
99 % \item The |latexsym| package is loaded.
100 % \end{itemize}
101 % For full compatibility mode, the file |latex209.def| is loaded by
102 % |\documentstyle|.
103 %
104 % The following modules are used in the implementation to direct
105 % \dst{} in generating the external files:
106 % \begin{center}
107 % \begin{tabular}{ll}
108 % driver & produce a documentation driver file \\
109 % package & produce |oldlfont.sty| \\
110 % latex209 & produce part of |latex209.def|
111 % \end{tabular}
112 % \end{center}
113 %
114 % \StopEventually{}
115 %
116 % \changes{v2.2k}{1995/11/29}{Remove duplicate driver code.}
117 %
118 % \section{The Code}
119 %
120 %
121 % \begin{macro}{\math@bgroup}
122 % \begin{macro}{\math@egroup}
123 % To make \meta{math alphabet identifier} work like simple font
124 % switches we change the meaning of |\math@bgroup| and
125 % |\math@egroup| to |\@empty|. This emulates the behavior of
126 % \texttt{oldlfont.sty} in NFSS1 setups. These definitions are not
127 % part of \texttt{latex209} automatically, since to emulate 2.09
128 % they are not necessary (all standard fonts are declared as math
129 % symbol fonts).
130 % \changes{v2.2f}{1994/05/05}{Added saved versions of the
131 % math-groupers, CAR}
132 % \changes{v2.2g}{1994/05/09}{Moved outside latex209 part}
133 % \begin{macrocode}
134 \let\math@bgroup\@empty
135 \let\math@egroup\@empty
136 \let \@@math@bgroup \math@bgroup
137 \let \@@math@egroup \math@egroup
138 % \end{macrocode}
139 % \end{macro}
140 % \end{macro}
141 %
142 %
143 % The rest of this document describes code that is used in
144 % |oldlfont.sty| and |latex209.def|.
145 % \begin{macrocode}
146 %<*package|latex209>
147 % \end{macrocode}
148 %
149 % When emulating the old settings we don't want a lot of NFSS
150 % information being displayed. Thus we required that the
151 % \texttt{tracefnt} package is loaded with the option
152 % \texttt{errorshow}.
153 % \begin{macrocode}
154 \RequirePackage[errorshow]{tracefnt}
155 % \end{macrocode}
156 %
157 % We define math \emph{alphabet} identifiers for the typefaces
158 % described in the \LaTeX{} manual. This is straightforward. Some
159 % are already defined by the kernel code.
160 % And here are the other ones defined by the old \LaTeX{}. They all
161 % get declared as math symbol font alphabets. Thus we first
162 % allocate the additional symbol fonts.
163 % \begin{macrocode}
164 \DeclareSymbolFont{bold}{OT1}{cmr}{bx}{n}
165 \DeclareSymbolFont{sans}{OT1}{cmss}{m}{n}
166 \DeclareSymbolFont{typewriter}{OT1}{cmtt}{m}{n}
167 \DeclareSymbolFont{italic}{OT1}{cmr}{m}{it}
168 \DeclareSymbolFont{smallcaps}{OT1}{cmr}{m}{sc}
169 \DeclareSymbolFont{slanted}{OT1}{cmr}{m}{sl}
170 % \end{macrocode}
171 % And here are the corresponding math identifiers.
172 % \begin{macrocode}
173 \DeclareSymbolFontAlphabet\mathbf{bold}
174 \DeclareSymbolFontAlphabet\mathsf{sans}
175 \DeclareSymbolFontAlphabet\mathtt{typewriter}
176 \DeclareSymbolFontAlphabet\mathsc{smallcaps}
177 \DeclareSymbolFontAlphabet\mathsl{slanted}
178 % \end{macrocode}
179 % We undefine the old |\mit| and |\cal| macros (whatever meaning
180 % they have) and reallocate them as symbol font alphabets.
181 % \begin{macrocode}
182 \let\mit\undefined
183 \let\cal\undefined
184 \let\mathit\undefined
185 \DeclareSymbolFontAlphabet\mathit{italic}
186 \DeclareSymbolFontAlphabet{\mit}{letters}
187 \DeclareSymbolFontAlphabet{\cal}{symbols}
188 % \end{macrocode}
189 %
190 % We define the font commands for selecting the typeface. They are
191 % probably defined by the document class/style but we want to force
192 % the old meaning.
193 %
194 % And here are the definition as they were in \LaTeX~2.09 but
195 % translated into NFSS2 language.
196 % \changes{v2.2h}{1994/05/11}{DPC use \cs{DeclareProtectedCommand}}
197 % \changes{v2.2i}{1994/05/13}{DPC renamed to \cs{DeclareRobustCommand}}
198 % \begin{macrocode}
199 \DeclareRobustCommand\rm{\normalfont\rmfamily\mathgroup\symoperators}
200 \DeclareRobustCommand\sf{\normalfont\sffamily\mathgroup\symsans}
201 \DeclareRobustCommand\sl{\normalfont\slshape\mathgroup\symslanted}
202 \DeclareRobustCommand\bf{\normalfont\bfseries\mathgroup\symbold}
203 \DeclareRobustCommand\sc{\normalfont\scshape\mathgroup\symsmallcaps}
204 \DeclareRobustCommand\it{\normalfont\itshape\mathgroup\symitalic}
205 \DeclareRobustCommand\tt{\normalfont\ttfamily\mathgroup\symtypewriter}
206 % \end{macrocode}
207 % We also have to define the \emph{emphasize} font change command
208 % (i.e.\ |\em|). This command will look whether the current font is
209 % sloped (i.e.\ has a positive |\fontdimen1|) and will then select
210 % either |\rm| or |\it|.
211 % \begin{macrocode}
212 \DeclareRobustCommand\em{%
213 \@nomath\em
214 \ifdim \fontdimen\@ne\font>\z@\rm\else\it\fi}
215 % \end{macrocode}
216 %
217 % \begin{macro}{\@setfontsize}
218 % Font size changes are handled using the |\@setfontsize| command
219 % (in new class files) or by the |@setsize| command in old document
220 % style files. The latter is now defined to call |\@setfontsize| in
221 % the NFSS2 kernel code.
222 % Thus to make all size changing commands automatically return to
223 % the normal font of the document we only have to slightly modify
224 % the definition of |\@setfontsize| by adding a |\normalfont|
225 % command to it.
226 % \changes{v2.2j}{1994/11/06}{Use \cs{@typeset@protect}}
227 % \begin{macrocode}
228 \def\@setfontsize#1#2#3{\@nomath#1%
229 \ifx\protect\@typeset@protect
230 \let\@currsize#1%
231 \fi
232 \fontsize{#2}{#3}\normalfont}
233 % \end{macrocode}
234 % \end{macro}
235 %
236 %
237 % \begin{macro}{\non@alpherr}
238 % Since we emulate the old syntax we also have to silently ignore
239 % uses of a math alphabet outside math mode. Since we now use the
240 % |\sym...| switches the following setting is not longer necessary.
241 % \begin{macrocode}
242 %\let\non@alpherr\@gobble
243 % \end{macrocode}
244 % \end{macro}
245 %
246 % \begin{macro}{\not@math@alphabet}
247 % But we need to disable the error message that is generated from
248 % |\bfseries| etc.
249 % \begin{macrocode}
250 \let\not@math@alphabet\@gobbletwo
251 % \end{macrocode}
252 % \end{macro}
253 %
254 %
255 % We left out the special \LaTeX{} fonts which are not automatically
256 % included in the base version of the font selection since these
257 % fonts contain only a few characters which are also included in
258 % the AMS fonts so anybody who is using these fonts doesn't need
259 % them. But for compatibility reasons we will define these symbols.
260 %
261 % \begin{macrocode}
262 \RequirePackage{latexsym}
263 %</package|latex209>
264 % \end{macrocode}
265 %
266 % \DeleteShortVerb{\|}
267 % \Finale
268 \endinput