summaryrefslogtreecommitdiff
path: root/macros/latex/required/babel/base/bbcompat.dtx
blob: 8b58d8b7c73c0841a2ca93caacc8895b75a1c8e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
% \iffalse meta-comment
%
% Copyright 1989-2008 Johannes L. Braams and any individual authors
% listed elsewhere in this file.  All rights reserved.
% 
% This file is part of the Babel system.
% --------------------------------------
% 
% It may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2003/12/01 or later.
% 
% This work has the LPPL maintenance status "maintained".
% 
% The Current Maintainer of this work is Javier Bezos.
% 
% The list of all files belonging to the Babel system is
% given in the file `manifest.bbl. See also `legal.bbl' 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
% \CheckSum{263}
%
% \iffalse
%<*dtx>
\ProvidesFile{bbcompat.dtx}[2019/09/27 v3.34]
%</dtx>
%
%% File 'bbcompat.dtx'
%% Copyright (C) 1989 -- 2008 by Johannes Braams,
%%                            TeXniek
%%                            all rights reserved.
%<*filedriver>
\documentclass{ltxdoc}
\newcommand*\TeXhax{\TeX hax}
\newcommand*\babel{\textsf{babel}}
\newcommand*\Lopt[1]{\textsf{#1}}
\newcommand*\file[1]{\texttt{#1}}
\newcommand*\pkg[1]{\texttt{#1}}
\begin{document}
 \DocInput{bbcompat.dtx}
\end{document}
%</filedriver>
% \fi
%
% \GetFileInfo{bbcompat.dtx}
% \changes{bbcompat-1.2j}{2006/06/05}{Small documentation fix}
%
% \StopEventually{}
%
% \changes{bbcompat-1.2}{1996/11/02}{Added the check for \cs{LdfInit}}
% \changes{bbcompat-1.2d}{1999/04/12}{When these files are read by a
%    non-babel plain format the @ has still category code `other' so
%    can't use \cs{@undefined}} 
%    \begin{macrocode}
\ifx\LdfInit\undefined
  \def\LdfInit{%
    \chardef\atcatcode=\catcode`\@
    \catcode`\@=11\relax
    \input babel.def\relax
    \catcode`\@=\atcatcode \let\atcatcode\relax
    \LdfInit}
\fi
%    \end{macrocode}
%    It seems that these files, although meant for compatibility with
%    \file{plain.tex} are also used as packages in \LaTeXe. The
%    disadvantage of that is that a number of compatibility measures
%    with other packages that are part of \file{babel.sty} are not
%    present. Therefore we issue an error and then load
%    \file{babel.def} to let the user continue processing his
%    document (at his own risk). 
%
%    First we determine whether we are loaded from \LaTeX\ by checking
%    whether |\PackageError| is defined.
%    \begin{macrocode}
\ifx\PackageError\undefined
%    \end{macrocode}
%    In this case we are not being loaded by \LaTeXe, so just define
%    |\ProvidesLanguage| to prevent an error when the \file{.ldf} file
%    is loaded.
%    \begin{macrocode}
  \def\ProvidesLanguage#1[#2 #3 #4]{%
    \wlog{Language: #1 #4 #3 <#2>}}%
\else
%    \end{macrocode}
%    Now we define an error message which `deletes' itself from
%    memory.
% \changes{bbcompat-1.2l}{2013/07/28}{Raise a more useful error.} 
%
%    \begin{macrocode}
  \def\bblstyerror{%
    \PackageError{babel}%
      {You are loading directly a language style.\MessageBreak
       This syntax is deprecated and you must use\MessageBreak
       \string\usepackage[language]\string{babel\string}}%
      {You could proceed but don't complain if you run into errors}%
    \let\bblstyerror\@undefined
    }
%    \end{macrocode}
%    Now we can issue the error, it should appear when these files are
%    loaded from \LaTeXe, with \emph{or} without \file{hyphen.cfg}
%    preloaded in the format. 
% \changes{bbcompat-1.2e}{1999/04/20}{Added a check for
%    \cs{ProvidesLanguage}} 
%    \begin{macrocode}
  \ifx\ProvidesLanguage\undefined
%    \end{macrocode}
%    In this case \file{hyphen.cfg} wasn't loaded in the \LaTeXe\
%    format so we also need to provide a suitable definition for
%    |\ProvidesLanguage|.
%    \begin{macrocode}
    \bblstyerror
    \def\ProvidesLanguage{%
      \chardef\atcatcode=\catcode`\@
      \catcode`\@=11\relax
      \input babel.def\relax
      \catcode`\@=\atcatcode \let\atcatcode\relax
      \ProvidesLanguage}
%    \end{macrocode}
%    When we end up here, \file{hyphen.cfg} was loaded into the
%    format; we only need to issue the error from \LaTeXe.
%    \begin{macrocode}
  \else
    \bblstyerror
  \fi
\fi
%    \end{macrocode}
% \changes{bbcompat-1.2}{1996/07/13}{Added \file{.sty} files and
%    definition of \cs{CurrentOption} for language definition files
%    that are loaded by more than one option.} 
% \changes{bbcompat-1.2}{1996/12/14}{Added \file{welsh.sty}}
% \changes{bbcompat-1.2b}{1997/02/07}{Added \file{sanskrit.sty}}
% \changes{bbcompat-1.2c}{1998/03/24}{Added \file{hebrew.sty}}
% \changes{bbcompat-1.2d}{1999/03/09}{Added \file{ukraineb.sty}}
% \changes{bbcompat-1.2d}{1999/04/10}{Added \file{ngerman.sty} and
%    \file{naustrian.sty}} 
% \changes{bbcompat-1.2f}{2000/09/26}{Added \file{icelandic.sty},
%    \file{bulgarian.sty} and \file{samin.sty}}
% \changes{bbcompat-1.2f}{2000/09/27}{Define \cs{CurrentOption} in
%    each file}
% \changes{bbcompat-1.2g}{2001/01/19}{Added code for usenglish and
%    ukenglish.sty} 
% \changes{bbcompat-1.2h}{2003/11/13}{Added \file{interlingua.sty}}
% \changes{bbcompat-1.2i}{2005/11/23}{Added \file{albanian.sty} and
%    \file{bahasam.sty}}
% \changes{bbcompat-1.2k}{2008/07/06}{Added \file{latin.sty}}
%    \begin{macrocode}
%<+albanian>\def\CurrentOption{albanian}
%<+albanian>\input albanian.ldf\relax
%<+american>\def\CurrentOption{american}
%<+USenglish>\def\CurrentOption{USenglish}
%<+british>\def\CurrentOption{british}
%<+english>\def\CurrentOption{english}
%<+UKenglish>\def\CurrentOption{UKenglish}
%<american|british|english|UKenglish|USenglish>\input english.ldf\relax
%<+bahasa>\def\CurrentOption{bahasai}
%<+bahasa>\input bahasai.ldf\relax
%<+bahasam>\def\CurrentOption{bahasam}
%<+bahasam>\input bahasam.ldf\relax
%<+breton>\def\CurrentOption{breton}
%<+breton>\input breton.ldf\relax
%<+bulgarian>\def\CurrentOption{bulgarian}
%<+bulgarian>\input bulgarian.ldf\relax
%<+catalan>\def\CurrentOption{catalan}
%<+catalan>\input catalan.ldf\relax
%<+croatian>\def\CurrentOption{croatian}
%<+croatian>\input croatian.ldf\relax
%<+czech>\def\CurrentOption{czech}
%<+czech>\input czech.ldf\relax
%<+danish>\def\CurrentOption{danish}
%<+danish>\input danish.ldf\relax
%<+afrikaans>\def\CurrentOption{afrikaans}
%<+dutch>\def\CurrentOption{dutch}
%<+afrikaans|dutch>\input dutch.ldf\relax
%<+esperanto>\def\CurrentOption{esperanto}
%<+esperanto>\input esperanto.ldf\relax
%<+estonian>\def\CurrentOption{estonian}
%<+estonian>\input estonian.ldf\relax
%<+finnish>\def\CurrentOption{finnish}
%<+finnish>\input finnish.ldf\relax
%<+francais>\def\CurrentOption{french}
%<+francais>\input french.ldf\relax
%<+galician>\def\CurrentOption{galician}
%<+galician>\input galician.ldf\relax
%<+austrian>\def\CurrentOption{austrian}
%<+german>\def\CurrentOption{german}
%<+germanb>\def\CurrentOption{german}
%<+austrian|german|germanb>\input germanb.ldf\relax
%<+naustrian>\def\CurrentOption{naustrian}
%<+ngerman>\def\CurrentOption{ngerman}
%<+naustrian|ngerman>\input ngermanb.ldf\relax
%<+greek>\def\CurrentOption{greek}
%<+greek>\input greek.ldf\relax
%<+icelandic>\def\CurrentOption{icelandic}
%<+icelandic>\input icelandic.ldf\relax
%<+interlingua>\def\CurrentOption{interlingua}
%<+interlingua>\input interlingua.ldf\relax
%<+irish>\def\CurrentOption{irish}
%<+irish>\input irish.ldf\relax
%<+italian>\def\CurrentOption{italian}
%<+italian>\input italian.ldf\relax
%<+latin>\def\CurrentOption{latin}
%<+latin>\input latin.ldf\relax
%<+lsorbian>\def\CurrentOption{lsorbian}
%<+lsorbian>\input lsorbian.ldf\relax
%<+magyar>\def\CurrentOption{magyar}
%<+hungarian>\def\CurrentOption{hungarian}
%<+magyar|hungarian>\input magyar.ldf\relax
%<+norsk>\def\CurrentOption{norsk}
%<+nynorsk>\def\CurrentOption{nynorsk}
%<+norsk|nynorsk>\input norsk.ldf\relax
%<+polish>\def\CurrentOption{polish}
%<+polish>\input polish.ldf\relax
%<+portuges>\def\CurrentOption{portuges}
%<+portuguese>\def\CurrentOption{portuguese}
%<+brazil>\def\CurrentOption{brazil}
%<+brazilian>\def\CurrentOption{brazilian}
%<+portuges|portuguese|brazil|brazilian>\input portuges.ldf\relax
%<+romanian>\def\CurrentOption{romanian}
%<+romanian>\input romanian.ldf\relax
%<+russianb>\def\CurrentOption{russianb}
%<+russianb>\input russianb.ldf\relax
%<+ukraineb>\def\CurrentOption{ukraineb}
%<+ukraineb>\input ukraineb.ldf\relax
%<+samin>\def\CurrentOption{samin}
%<+samin>\input samin.ldf\relax
%<+sanskrit>\def\CurrentOption{sanskrit}
%<+sanskrit>\input sanskrit.ldf\relax
%<+scottish>\def\CurrentOption{scottish}
%<+scottish>\input scottish.ldf\relax
%<+slovak>\def\CurrentOption{slovak}
%<+slovak>\input slovak.ldf\relax
%<+slovene>\def\CurrentOption{slovene}
%<+slovene>\input slovene.ldf\relax
%<+spanish>\def\CurrentOption{spanish}
%<+spanish>\input spanish.ldf\relax
%<+swedish>\def\CurrentOption{swedish}
%<+swedish>\input swedish.ldf\relax
%<+turkish>\def\CurrentOption{turkish}
%<+turkish>\input turkish.ldf\relax
%<+usorbian>\def\CurrentOption{usorbian}
%<+usorbian>\input usorbian.ldf\relax
%<+welsh>\def\CurrentOption{welsh}
%<+welsh>\input welsh.ldf\relax
%<+hebrew>\def\CurrentOption{hebrew}
%<+hebrew>\input rlbabel.def\input hebrew.ldf\relax
%    \end{macrocode}
%
%    \section{Internationalizing \LaTeX{} 2.09}
%
%    Now that we're sure that the code is seen by \LaTeX\ only, we
%    have to find out what the main (primary) document style is
%    because we want to redefine some macros.  This is only necessary
%    for releases of \LaTeX\ dated before December~1991. Therefore
%    this part of the code can optionally be included in
%    \file{babel.def} by specifying the \texttt{docstrip} option
%    \texttt{names}.
%
%    The standard styles can be distinguished by checking whether some
%    macros are defined. In table~\ref{styles} an overview is given of
%    the macros that can be used for this purpose.
%  \begin{table}[htb]
%  \begin{center}
% \DeleteShortVerb{\|}
%  \begin{tabular}{|lcp{8cm}|}
%   \hline
%   article         & : & both the \verb+\chapter+ and \verb+\opening+
%                         macros are undefined\\
%   report and book & : & the \verb+\chapter+ macro is defined and
%                         the \verb+\opening+ is undefined\\
%   letter          & : & the \verb+\chapter+ macro is undefined and
%                         the \verb+\opening+ is defined\\
%   \hline
%  \end{tabular}
% \caption{How to determine the main document style}\label{styles}
% \MakeShortVerb{\|}
%  \end{center}
%  \end{table}
%
%    \noindent The macros that have to be redefined for the
%    \texttt{report} and \texttt{book} document styles happen to be
%    the same, so there is no need to distinguish between those two
%    styles.
%
%  \begin{macro}{\doc@style}
%    First a parameter |\doc@style| is defined to identify the current
%    document style. This parameter might have been defined by a
%    document style that already uses macros instead of hard-wired
%    texts, such as \file{artikel1.sty}~\cite{BEP}, so the existence of
%    |\doc@style| is checked. If this macro is undefined, i.\,e., if
%    the document style is unknown and could therefore contain
%    hard-wired texts, |\doc@style| is defined to the default
%    value~`0'.
% \changes{babel~3.0d}{1991/10/29}{Removed use of \cs{@ifundefined}}
%    \begin{macrocode}
%<*names>
\ifx\@undefined\doc@style
  \def\doc@style{0}%
%    \end{macrocode}
%    This parameter is defined in the following \texttt{if}
%    construction (see table~\ref{styles}):
%
%    \begin{macrocode}
  \ifx\@undefined\opening
    \ifx\@undefined\chapter
      \def\doc@style{1}%
    \else
      \def\doc@style{2}%
    \fi
  \else
    \def\doc@style{3}%
  \fi%
\fi%
%    \end{macrocode}
%  \end{macro}
%
% \changes{babel~3.1}{1991/11/05}{Removed definition of
%    \cs{if@restonecol}}
%
%    Now here comes the real work: we start to redefine things and
%    replace hard-wired texts by macros. These redefinitions should be
%    carried out conditionally, in case it has already been done.
%
%    For the \texttt{figure} and \texttt{table} environments we have
%    in all styles:
%    \begin{macrocode}
\@ifundefined{figurename}{\def\fnum@figure{\figurename{} \thefigure}}{}
\@ifundefined{tablename}{\def\fnum@table{\tablename{} \thetable}}{}
%    \end{macrocode}
%
%    The rest of the macros have to be treated differently for each
%    style.  When |\doc@style| still has its default value nothing
%    needs to be done.
%    \begin{macrocode}
\ifcase\doc@style\relax
\or
%    \end{macrocode}
%
%    This means that \file{babel.def} is read after the
%    \texttt{article} style, where no |\chapter| and |\opening|
%    commands are defined\footnote{A fact that was pointed out to me
%    by Nico Poppelier and was already used in Piet van Oostrum's
%    document style option~\texttt{nl}.}.
%
%    First we have the |\tableofcontents|,
%    |\listoffigures| and |\listoftables|:
%    \begin{macrocode}
\@ifundefined{contentsname}%
    {\def\tableofcontents{\section*{\contentsname\@mkboth
          {\uppercase{\contentsname}}{\uppercase{\contentsname}}}%
      \@starttoc{toc}}}{}
\@ifundefined{listfigurename}%
    {\def\listoffigures{\section*{\listfigurename\@mkboth
          {\uppercase{\listfigurename}}{\uppercase{\listfigurename}}}%
     \@starttoc{lof}}}{}
\@ifundefined{listtablename}%
    {\def\listoftables{\section*{\listtablename\@mkboth
          {\uppercase{\listtablename}}{\uppercase{\listtablename}}}%
      \@starttoc{lot}}}{}
%    \end{macrocode}
%
% Then the |\thebibliography| and |\theindex| environments.
%
%    \begin{macrocode}
\@ifundefined{refname}%
    {\def\thebibliography#1{\section*{\refname
      \@mkboth{\uppercase{\refname}}{\uppercase{\refname}}}%
      \list{[\arabic{enumi}]}{\settowidth\labelwidth{[#1]}%
        \leftmargin\labelwidth
        \advance\leftmargin\labelsep
        \usecounter{enumi}}%
        \def\newblock{\hskip.11em plus.33em minus.07em}%
        \sloppy\clubpenalty4000\widowpenalty\clubpenalty
        \sfcode`\.=1000\relax}}{}
\@ifundefined{indexname}%
    {\def\theindex{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
     \columnseprule \z@
     \columnsep 35pt\twocolumn[\section*{\indexname}]%
       \@mkboth{\uppercase{\indexname}}{\uppercase{\indexname}}%
       \thispagestyle{plain}%
       \parskip\z@ plus.3pt\parindent\z@\let\item\@idxitem}}{}
%    \end{macrocode}
%
% The |abstract| environment:
%
%    \begin{macrocode}
\@ifundefined{abstractname}%
    {\def\abstract{\if@twocolumn
    \section*{\abstractname}%
    \else \small
    \begin{center}%
    {\bf \abstractname\vspace{-.5em}\vspace{\z@}}%
    \end{center}%
    \quotation
    \fi}}{}
%    \end{macrocode}
%
% And last but not least, the macro |\part|:
%
%    \begin{macrocode}
\@ifundefined{partname}%
{\def\@part[#1]#2{\ifnum \c@secnumdepth >\m@ne
        \refstepcounter{part}%
        \addcontentsline{toc}{part}{\thepart
        \hspace{1em}#1}\else
      \addcontentsline{toc}{part}{#1}\fi
   {\parindent\z@ \raggedright
    \ifnum \c@secnumdepth >\m@ne
      \Large \bf \partname{} \thepart
      \par \nobreak
    \fi
    \huge \bf
    #2\markboth{}{}\par}%
    \nobreak
    \vskip 3ex\@afterheading}%
}{}
%    \end{macrocode}
%
%    This is all that needs to be done for the \texttt{article} style.
%
%    \begin{macrocode}
\or
%    \end{macrocode}
%
%    The next case is formed by the two styles \texttt{book} and
%    \texttt{report}.  Basically we have to do the same as for the
%    \texttt{article} style, except now we must also change the
%    |\chapter| command.
%
%    The tables of contents, figures and tables:
%    \begin{macrocode}
\@ifundefined{contentsname}%
    {\def\tableofcontents{\@restonecolfalse
      \if@twocolumn\@restonecoltrue\onecolumn
      \fi\chapter*{\contentsname\@mkboth
          {\uppercase{\contentsname}}{\uppercase{\contentsname}}}%
      \@starttoc{toc}%
      \csname if@restonecol\endcsname\twocolumn
      \csname fi\endcsname}}{}
\@ifundefined{listfigurename}%
    {\def\listoffigures{\@restonecolfalse
      \if@twocolumn\@restonecoltrue\onecolumn
      \fi\chapter*{\listfigurename\@mkboth
          {\uppercase{\listfigurename}}{\uppercase{\listfigurename}}}%
      \@starttoc{lof}%
      \csname if@restonecol\endcsname\twocolumn
      \csname fi\endcsname}}{}
\@ifundefined{listtablename}%
    {\def\listoftables{\@restonecolfalse
      \if@twocolumn\@restonecoltrue\onecolumn
      \fi\chapter*{\listtablename\@mkboth
          {\uppercase{\listtablename}}{\uppercase{\listtablename}}}%
      \@starttoc{lot}%
      \csname if@restonecol\endcsname\twocolumn
      \csname fi\endcsname}}{}
%    \end{macrocode}
%
%    Again, the |bibliography| and |index| environments; notice that
%    in this case we use |\bibname| instead of |\refname| as in the
%    definitions for the \texttt{article} style.  The reason for this
%    is that in the \texttt{article} document style the term
%    `References' is used in the definition of |\thebibliography|. In
%    the \texttt{report} and \texttt{book} document styles the term
%    `Bibliography' is used.
%    \begin{macrocode}
\@ifundefined{bibname}%
    {\def\thebibliography#1{\chapter*{\bibname
     \@mkboth{\uppercase{\bibname}}{\uppercase{\bibname}}}%
     \list{[\arabic{enumi}]}{\settowidth\labelwidth{[#1]}%
     \leftmargin\labelwidth \advance\leftmargin\labelsep
     \usecounter{enumi}}%
     \def\newblock{\hskip.11em plus.33em minus.07em}%
     \sloppy\clubpenalty4000\widowpenalty\clubpenalty
     \sfcode`\.=1000\relax}}{}
\@ifundefined{indexname}%
    {\def\theindex{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
    \columnseprule \z@
    \columnsep 35pt\twocolumn[\@makeschapterhead{\indexname}]%
      \@mkboth{\uppercase{\indexname}}{\uppercase{\indexname}}%
    \thispagestyle{plain}%
    \parskip\z@ plus.3pt\parindent\z@ \let\item\@idxitem}}{}
%    \end{macrocode}
%
% Here is the |abstract| environment:
%    \begin{macrocode}
\@ifundefined{abstractname}%
    {\def\abstract{\titlepage
    \null\vfil
    \begin{center}%
    {\bf \abstractname}%
    \end{center}}}{}
%    \end{macrocode}
%
%     And last but not least the |\chapter|, |\appendix| and
%    |\part| macros.
%    \begin{macrocode}
\@ifundefined{chaptername}{\def\@chapapp{\chaptername}}{}
%
\@ifundefined{appendixname}%
    {\def\appendix{\par
      \setcounter{chapter}{0}%
      \setcounter{section}{0}%
      \def\@chapapp{\appendixname}%
      \def\thechapter{\Alph{chapter}}}}{}
%
\@ifundefined{partname}%
    {\def\@part[#1]#2{\ifnum \c@secnumdepth >-2\relax
            \refstepcounter{part}%
            \addcontentsline{toc}{part}{\thepart
            \hspace{1em}#1}\else
            \addcontentsline{toc}{part}{#1}\fi
       \markboth{}{}%
       {\centering
        \ifnum \c@secnumdepth >-2\relax
          \huge\bf \partname{} \thepart
        \par
        \vskip 20pt \fi
        \Huge \bf
        #1\par}\@endpart}}{}%
\or
%    \end{macrocode}
%
%    Now we address the case where \file{babel.def} is read after the
%    \texttt{letter} style. The \texttt{letter} document style
%    defines the macro |\opening| and some other macros that are
%    specific to \texttt{letter}. This means that we have to redefine
%    other macros, compared to the previous two cases.
%
%    First two macros for the material at the end of a letter, the
%    |\cc| and |\encl| macros.
%    \begin{macrocode}
\@ifundefined{ccname}%
    {\def\cc#1{\par\noindent
     \parbox[t]{\textwidth}%
     {\@hangfrom{\rm \ccname : }\ignorespaces #1\strut}\par}}{}
\@ifundefined{enclname}%
    {\def\encl#1{\par\noindent
     \parbox[t]{\textwidth}%
     {\@hangfrom{\rm \enclname : }\ignorespaces #1\strut}\par}}{}
%    \end{macrocode}
%
%    The last thing we have to do here is to redefine the
%    \texttt{headings} pagestyle:
% \changes{babel~3.3}{1993/07/11}{\cs{headpagename} should be
%    \cs{pagename}}
%    \begin{macrocode}
\@ifundefined{headtoname}%
  {\def\ps@headings{%
     \def\@oddhead{\sl \headtoname{} \ignorespaces\toname \hfil
                      \@date \hfil \pagename{} \thepage}%
     \def\@oddfoot{}}}{}
\fi
%</names>
%    \end{macrocode}
%
% This was the last of the four standard document styles, so if
% |\doc@style| has another value we do nothing and just close the
% \texttt{if} construction.  Here ends the code that can be optionally
% included when a version of \LaTeX\ is in use that is dated
% \emph{before} December~1991.
%
%    We also need to redefine a number of commands to ensure that the
%    right font encoding is used, but this can't be done before
%    \file{babel.def} is loaded.
% \changes{babel~3.6o}{1999/04/07}{Moved the rest of the font encoding
%    related definitions to their original place}
%
%%
%% \CharacterTable
%%  {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
%%   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
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
\endinput