configure: Run HAVE_AS_X86_PCREL for all X86 targets
[libffi.git] / texinfo.tex
1 % texinfo.tex -- TeX macros to handle Texinfo files.
2 %
3 % Load plain if necessary, i.e., if running under initex.
4 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
5 %
6 \def\texinfoversion{2013-02-01.11}
7 %
8 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
9 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
10 % 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
11 %
12 % This texinfo.tex file is free software: you can redistribute it and/or
13 % modify it under the terms of the GNU General Public License as
14 % published by the Free Software Foundation, either version 3 of the
15 % License, or (at your option) any later version.
16 %
17 % This texinfo.tex file is distributed in the hope that it will be
18 % useful, but WITHOUT ANY WARRANTY; without even the implied warranty
19 % of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 % General Public License for more details.
21 %
22 % You should have received a copy of the GNU General Public License
23 % along with this program. If not, see <http://www.gnu.org/licenses/>.
24 %
25 % As a special exception, when this file is read by TeX when processing
26 % a Texinfo source document, you may use the result without
27 % restriction. This Exception is an additional permission under section 7
28 % of the GNU General Public License, version 3 ("GPLv3").
29 %
30 % Please try the latest version of texinfo.tex before submitting bug
31 % reports; you can get the latest version from:
32 % http://ftp.gnu.org/gnu/texinfo/ (the Texinfo release area), or
33 % http://ftpmirror.gnu.org/texinfo/ (same, via a mirror), or
34 % http://www.gnu.org/software/texinfo/ (the Texinfo home page)
35 % The texinfo.tex in any given distribution could well be out
36 % of date, so if that's what you're using, please check.
37 %
38 % Send bug reports to bug-texinfo@gnu.org. Please include including a
39 % complete document in each bug report with which we can reproduce the
40 % problem. Patches are, of course, greatly appreciated.
41 %
42 % To process a Texinfo manual with TeX, it's most reliable to use the
43 % texi2dvi shell script that comes with the distribution. For a simple
44 % manual foo.texi, however, you can get away with this:
45 % tex foo.texi
46 % texindex foo.??
47 % tex foo.texi
48 % tex foo.texi
49 % dvips foo.dvi -o # or whatever; this makes foo.ps.
50 % The extra TeX runs get the cross-reference information correct.
51 % Sometimes one run after texindex suffices, and sometimes you need more
52 % than two; texi2dvi does it as many times as necessary.
53 %
54 % It is possible to adapt texinfo.tex for other languages, to some
55 % extent. You can get the existing language-specific files from the
56 % full Texinfo distribution.
57 %
58 % The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
59
60
61 \message{Loading texinfo [version \texinfoversion]:}
62
63 % If in a .fmt file, print the version number
64 % and turn on active characters that we couldn't do earlier because
65 % they might have appeared in the input file name.
66 \everyjob{\message{[Texinfo version \texinfoversion]}%
67 \catcode`+=\active \catcode`\_=\active}
68
69 \chardef\other=12
70
71 % We never want plain's \outer definition of \+ in Texinfo.
72 % For @tex, we can use \tabalign.
73 \let\+ = \relax
74
75 % Save some plain tex macros whose names we will redefine.
76 \let\ptexb=\b
77 \let\ptexbullet=\bullet
78 \let\ptexc=\c
79 \let\ptexcomma=\,
80 \let\ptexdot=\.
81 \let\ptexdots=\dots
82 \let\ptexend=\end
83 \let\ptexequiv=\equiv
84 \let\ptexexclam=\!
85 \let\ptexfootnote=\footnote
86 \let\ptexgtr=>
87 \let\ptexhat=^
88 \let\ptexi=\i
89 \let\ptexindent=\indent
90 \let\ptexinsert=\insert
91 \let\ptexlbrace=\{
92 \let\ptexless=<
93 \let\ptexnewwrite\newwrite
94 \let\ptexnoindent=\noindent
95 \let\ptexplus=+
96 \let\ptexraggedright=\raggedright
97 \let\ptexrbrace=\}
98 \let\ptexslash=\/
99 \let\ptexstar=\*
100 \let\ptext=\t
101 \let\ptextop=\top
102 {\catcode`\'=\active \global\let\ptexquoteright'}% active in plain's math mode
103
104 % If this character appears in an error message or help string, it
105 % starts a new line in the output.
106 \newlinechar = `^^J
107
108 % Use TeX 3.0's \inputlineno to get the line number, for better error
109 % messages, but if we're using an old version of TeX, don't do anything.
110 %
111 \ifx\inputlineno\thisisundefined
112 \let\linenumber = \empty % Pre-3.0.
113 \else
114 \def\linenumber{l.\the\inputlineno:\space}
115 \fi
116
117 % Set up fixed words for English if not already set.
118 \ifx\putwordAppendix\undefined \gdef\putwordAppendix{Appendix}\fi
119 \ifx\putwordChapter\undefined \gdef\putwordChapter{Chapter}\fi
120 \ifx\putworderror\undefined \gdef\putworderror{error}\fi
121 \ifx\putwordfile\undefined \gdef\putwordfile{file}\fi
122 \ifx\putwordin\undefined \gdef\putwordin{in}\fi
123 \ifx\putwordIndexIsEmpty\undefined \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
124 \ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
125 \ifx\putwordInfo\undefined \gdef\putwordInfo{Info}\fi
126 \ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
127 \ifx\putwordMethodon\undefined \gdef\putwordMethodon{Method on}\fi
128 \ifx\putwordNoTitle\undefined \gdef\putwordNoTitle{No Title}\fi
129 \ifx\putwordof\undefined \gdef\putwordof{of}\fi
130 \ifx\putwordon\undefined \gdef\putwordon{on}\fi
131 \ifx\putwordpage\undefined \gdef\putwordpage{page}\fi
132 \ifx\putwordsection\undefined \gdef\putwordsection{section}\fi
133 \ifx\putwordSection\undefined \gdef\putwordSection{Section}\fi
134 \ifx\putwordsee\undefined \gdef\putwordsee{see}\fi
135 \ifx\putwordSee\undefined \gdef\putwordSee{See}\fi
136 \ifx\putwordShortTOC\undefined \gdef\putwordShortTOC{Short Contents}\fi
137 \ifx\putwordTOC\undefined \gdef\putwordTOC{Table of Contents}\fi
138 %
139 \ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
140 \ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
141 \ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
142 \ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
143 \ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
144 \ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
145 \ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
146 \ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
147 \ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
148 \ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
149 \ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
150 \ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
151 %
152 \ifx\putwordDefmac\undefined \gdef\putwordDefmac{Macro}\fi
153 \ifx\putwordDefspec\undefined \gdef\putwordDefspec{Special Form}\fi
154 \ifx\putwordDefvar\undefined \gdef\putwordDefvar{Variable}\fi
155 \ifx\putwordDefopt\undefined \gdef\putwordDefopt{User Option}\fi
156 \ifx\putwordDeffunc\undefined \gdef\putwordDeffunc{Function}\fi
157
158 % Since the category of space is not known, we have to be careful.
159 \chardef\spacecat = 10
160 \def\spaceisspace{\catcode`\ =\spacecat}
161
162 % sometimes characters are active, so we need control sequences.
163 \chardef\ampChar = `\&
164 \chardef\colonChar = `\:
165 \chardef\commaChar = `\,
166 \chardef\dashChar = `\-
167 \chardef\dotChar = `\.
168 \chardef\exclamChar= `\!
169 \chardef\hashChar = `\#
170 \chardef\lquoteChar= `\`
171 \chardef\questChar = `\?
172 \chardef\rquoteChar= `\'
173 \chardef\semiChar = `\;
174 \chardef\slashChar = `\/
175 \chardef\underChar = `\_
176
177 % Ignore a token.
178 %
179 \def\gobble#1{}
180
181 % The following is used inside several \edef's.
182 \def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
183
184 % Hyphenation fixes.
185 \hyphenation{
186 Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
187 ap-pen-dix bit-map bit-maps
188 data-base data-bases eshell fall-ing half-way long-est man-u-script
189 man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
190 par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
191 spell-ing spell-ings
192 stand-alone strong-est time-stamp time-stamps which-ever white-space
193 wide-spread wrap-around
194 }
195
196 % Margin to add to right of even pages, to left of odd pages.
197 \newdimen\bindingoffset
198 \newdimen\normaloffset
199 \newdimen\pagewidth \newdimen\pageheight
200
201 % For a final copy, take out the rectangles
202 % that mark overfull boxes (in case you have decided
203 % that the text looks ok even though it passes the margin).
204 %
205 \def\finalout{\overfullrule=0pt }
206
207 % Sometimes it is convenient to have everything in the transcript file
208 % and nothing on the terminal. We don't just call \tracingall here,
209 % since that produces some useless output on the terminal. We also make
210 % some effort to order the tracing commands to reduce output in the log
211 % file; cf. trace.sty in LaTeX.
212 %
213 \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
214 \def\loggingall{%
215 \tracingstats2
216 \tracingpages1
217 \tracinglostchars2 % 2 gives us more in etex
218 \tracingparagraphs1
219 \tracingoutput1
220 \tracingmacros2
221 \tracingrestores1
222 \showboxbreadth\maxdimen \showboxdepth\maxdimen
223 \ifx\eTeXversion\thisisundefined\else % etex gives us more logging
224 \tracingscantokens1
225 \tracingifs1
226 \tracinggroups1
227 \tracingnesting2
228 \tracingassigns1
229 \fi
230 \tracingcommands3 % 3 gives us more in etex
231 \errorcontextlines16
232 }%
233
234 % @errormsg{MSG}. Do the index-like expansions on MSG, but if things
235 % aren't perfect, it's not the end of the world, being an error message,
236 % after all.
237 %
238 \def\errormsg{\begingroup \indexnofonts \doerrormsg}
239 \def\doerrormsg#1{\errmessage{#1}}
240
241 % add check for \lastpenalty to plain's definitions. If the last thing
242 % we did was a \nobreak, we don't want to insert more space.
243 %
244 \def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
245 \removelastskip\penalty-50\smallskip\fi\fi}
246 \def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
247 \removelastskip\penalty-100\medskip\fi\fi}
248 \def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
249 \removelastskip\penalty-200\bigskip\fi\fi}
250
251 % Do @cropmarks to get crop marks.
252 %
253 \newif\ifcropmarks
254 \let\cropmarks = \cropmarkstrue
255 %
256 % Dimensions to add cropmarks at corners.
257 % Added by P. A. MacKay, 12 Nov. 1986
258 %
259 \newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
260 \newdimen\cornerlong \cornerlong=1pc
261 \newdimen\cornerthick \cornerthick=.3pt
262 \newdimen\topandbottommargin \topandbottommargin=.75in
263
264 % Output a mark which sets \thischapter, \thissection and \thiscolor.
265 % We dump everything together because we only have one kind of mark.
266 % This works because we only use \botmark / \topmark, not \firstmark.
267 %
268 % A mark contains a subexpression of the \ifcase ... \fi construct.
269 % \get*marks macros below extract the needed part using \ifcase.
270 %
271 % Another complication is to let the user choose whether \thischapter
272 % (\thissection) refers to the chapter (section) in effect at the top
273 % of a page, or that at the bottom of a page. The solution is
274 % described on page 260 of The TeXbook. It involves outputting two
275 % marks for the sectioning macros, one before the section break, and
276 % one after. I won't pretend I can describe this better than DEK...
277 \def\domark{%
278 \toks0=\expandafter{\lastchapterdefs}%
279 \toks2=\expandafter{\lastsectiondefs}%
280 \toks4=\expandafter{\prevchapterdefs}%
281 \toks6=\expandafter{\prevsectiondefs}%
282 \toks8=\expandafter{\lastcolordefs}%
283 \mark{%
284 \the\toks0 \the\toks2
285 \noexpand\or \the\toks4 \the\toks6
286 \noexpand\else \the\toks8
287 }%
288 }
289 % \topmark doesn't work for the very first chapter (after the title
290 % page or the contents), so we use \firstmark there -- this gets us
291 % the mark with the chapter defs, unless the user sneaks in, e.g.,
292 % @setcolor (or @url, or @link, etc.) between @contents and the very
293 % first @chapter.
294 \def\gettopheadingmarks{%
295 \ifcase0\topmark\fi
296 \ifx\thischapter\empty \ifcase0\firstmark\fi \fi
297 }
298 \def\getbottomheadingmarks{\ifcase1\botmark\fi}
299 \def\getcolormarks{\ifcase2\topmark\fi}
300
301 % Avoid "undefined control sequence" errors.
302 \def\lastchapterdefs{}
303 \def\lastsectiondefs{}
304 \def\prevchapterdefs{}
305 \def\prevsectiondefs{}
306 \def\lastcolordefs{}
307
308 % Main output routine.
309 \chardef\PAGE = 255
310 \output = {\onepageout{\pagecontents\PAGE}}
311
312 \newbox\headlinebox
313 \newbox\footlinebox
314
315 % \onepageout takes a vbox as an argument. Note that \pagecontents
316 % does insertions, but you have to call it yourself.
317 \def\onepageout#1{%
318 \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
319 %
320 \ifodd\pageno \advance\hoffset by \bindingoffset
321 \else \advance\hoffset by -\bindingoffset\fi
322 %
323 % Do this outside of the \shipout so @code etc. will be expanded in
324 % the headline as they should be, not taken literally (outputting ''code).
325 \ifodd\pageno \getoddheadingmarks \else \getevenheadingmarks \fi
326 \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
327 \ifodd\pageno \getoddfootingmarks \else \getevenfootingmarks \fi
328 \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
329 %
330 {%
331 % Have to do this stuff outside the \shipout because we want it to
332 % take effect in \write's, yet the group defined by the \vbox ends
333 % before the \shipout runs.
334 %
335 \indexdummies % don't expand commands in the output.
336 \normalturnoffactive % \ in index entries must not stay \, e.g., if
337 % the page break happens to be in the middle of an example.
338 % We don't want .vr (or whatever) entries like this:
339 % \entry{{\tt \indexbackslash }acronym}{32}{\code {\acronym}}
340 % "\acronym" won't work when it's read back in;
341 % it needs to be
342 % {\code {{\tt \backslashcurfont }acronym}
343 \shipout\vbox{%
344 % Do this early so pdf references go to the beginning of the page.
345 \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
346 %
347 \ifcropmarks \vbox to \outervsize\bgroup
348 \hsize = \outerhsize
349 \vskip-\topandbottommargin
350 \vtop to0pt{%
351 \line{\ewtop\hfil\ewtop}%
352 \nointerlineskip
353 \line{%
354 \vbox{\moveleft\cornerthick\nstop}%
355 \hfill
356 \vbox{\moveright\cornerthick\nstop}%
357 }%
358 \vss}%
359 \vskip\topandbottommargin
360 \line\bgroup
361 \hfil % center the page within the outer (page) hsize.
362 \ifodd\pageno\hskip\bindingoffset\fi
363 \vbox\bgroup
364 \fi
365 %
366 \unvbox\headlinebox
367 \pagebody{#1}%
368 \ifdim\ht\footlinebox > 0pt
369 % Only leave this space if the footline is nonempty.
370 % (We lessened \vsize for it in \oddfootingyyy.)
371 % The \baselineskip=24pt in plain's \makefootline has no effect.
372 \vskip 24pt
373 \unvbox\footlinebox
374 \fi
375 %
376 \ifcropmarks
377 \egroup % end of \vbox\bgroup
378 \hfil\egroup % end of (centering) \line\bgroup
379 \vskip\topandbottommargin plus1fill minus1fill
380 \boxmaxdepth = \cornerthick
381 \vbox to0pt{\vss
382 \line{%
383 \vbox{\moveleft\cornerthick\nsbot}%
384 \hfill
385 \vbox{\moveright\cornerthick\nsbot}%
386 }%
387 \nointerlineskip
388 \line{\ewbot\hfil\ewbot}%
389 }%
390 \egroup % \vbox from first cropmarks clause
391 \fi
392 }% end of \shipout\vbox
393 }% end of group with \indexdummies
394 \advancepageno
395 \ifnum\outputpenalty>-20000 \else\dosupereject\fi
396 }
397
398 \newinsert\margin \dimen\margin=\maxdimen
399
400 \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
401 {\catcode`\@ =11
402 \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
403 % marginal hacks, juha@viisa.uucp (Juha Takala)
404 \ifvoid\margin\else % marginal info is present
405 \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
406 \dimen@=\dp#1\relax \unvbox#1\relax
407 \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
408 \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
409 }
410
411 % Here are the rules for the cropmarks. Note that they are
412 % offset so that the space between them is truly \outerhsize or \outervsize
413 % (P. A. MacKay, 12 November, 1986)
414 %
415 \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
416 \def\nstop{\vbox
417 {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
418 \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
419 \def\nsbot{\vbox
420 {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
421
422 % Parse an argument, then pass it to #1. The argument is the rest of
423 % the input line (except we remove a trailing comment). #1 should be a
424 % macro which expects an ordinary undelimited TeX argument.
425 %
426 \def\parsearg{\parseargusing{}}
427 \def\parseargusing#1#2{%
428 \def\argtorun{#2}%
429 \begingroup
430 \obeylines
431 \spaceisspace
432 #1%
433 \parseargline\empty% Insert the \empty token, see \finishparsearg below.
434 }
435
436 {\obeylines %
437 \gdef\parseargline#1^^M{%
438 \endgroup % End of the group started in \parsearg.
439 \argremovecomment #1\comment\ArgTerm%
440 }%
441 }
442
443 % First remove any @comment, then any @c comment.
444 \def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
445 \def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
446
447 % Each occurrence of `\^^M' or `<space>\^^M' is replaced by a single space.
448 %
449 % \argremovec might leave us with trailing space, e.g.,
450 % @end itemize @c foo
451 % This space token undergoes the same procedure and is eventually removed
452 % by \finishparsearg.
453 %
454 \def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
455 \def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
456 \def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
457 \def\temp{#3}%
458 \ifx\temp\empty
459 % Do not use \next, perhaps the caller of \parsearg uses it; reuse \temp:
460 \let\temp\finishparsearg
461 \else
462 \let\temp\argcheckspaces
463 \fi
464 % Put the space token in:
465 \temp#1 #3\ArgTerm
466 }
467
468 % If a _delimited_ argument is enclosed in braces, they get stripped; so
469 % to get _exactly_ the rest of the line, we had to prevent such situation.
470 % We prepended an \empty token at the very beginning and we expand it now,
471 % just before passing the control to \argtorun.
472 % (Similarly, we have to think about #3 of \argcheckspacesY above: it is
473 % either the null string, or it ends with \^^M---thus there is no danger
474 % that a pair of braces would be stripped.
475 %
476 % But first, we have to remove the trailing space token.
477 %
478 \def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}}
479
480 % \parseargdef\foo{...}
481 % is roughly equivalent to
482 % \def\foo{\parsearg\Xfoo}
483 % \def\Xfoo#1{...}
484 %
485 % Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
486 % favourite TeX trick. --kasal, 16nov03
487
488 \def\parseargdef#1{%
489 \expandafter \doparseargdef \csname\string#1\endcsname #1%
490 }
491 \def\doparseargdef#1#2{%
492 \def#2{\parsearg#1}%
493 \def#1##1%
494 }
495
496 % Several utility definitions with active space:
497 {
498 \obeyspaces
499 \gdef\obeyedspace{ }
500
501 % Make each space character in the input produce a normal interword
502 % space in the output. Don't allow a line break at this space, as this
503 % is used only in environments like @example, where each line of input
504 % should produce a line of output anyway.
505 %
506 \gdef\sepspaces{\obeyspaces\let =\tie}
507
508 % If an index command is used in an @example environment, any spaces
509 % therein should become regular spaces in the raw index file, not the
510 % expansion of \tie (\leavevmode \penalty \@M \ ).
511 \gdef\unsepspaces{\let =\space}
512 }
513
514
515 \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
516
517 % Define the framework for environments in texinfo.tex. It's used like this:
518 %
519 % \envdef\foo{...}
520 % \def\Efoo{...}
521 %
522 % It's the responsibility of \envdef to insert \begingroup before the
523 % actual body; @end closes the group after calling \Efoo. \envdef also
524 % defines \thisenv, so the current environment is known; @end checks
525 % whether the environment name matches. The \checkenv macro can also be
526 % used to check whether the current environment is the one expected.
527 %
528 % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
529 % are not treated as environments; they don't open a group. (The
530 % implementation of @end takes care not to call \endgroup in this
531 % special case.)
532
533
534 % At run-time, environments start with this:
535 \def\startenvironment#1{\begingroup\def\thisenv{#1}}
536 % initialize
537 \let\thisenv\empty
538
539 % ... but they get defined via ``\envdef\foo{...}'':
540 \long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
541 \def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
542
543 % Check whether we're in the right environment:
544 \def\checkenv#1{%
545 \def\temp{#1}%
546 \ifx\thisenv\temp
547 \else
548 \badenverr
549 \fi
550 }
551
552 % Environment mismatch, #1 expected:
553 \def\badenverr{%
554 \errhelp = \EMsimple
555 \errmessage{This command can appear only \inenvironment\temp,
556 not \inenvironment\thisenv}%
557 }
558 \def\inenvironment#1{%
559 \ifx#1\empty
560 outside of any environment%
561 \else
562 in environment \expandafter\string#1%
563 \fi
564 }
565
566 % @end foo executes the definition of \Efoo.
567 % But first, it executes a specialized version of \checkenv
568 %
569 \parseargdef\end{%
570 \if 1\csname iscond.#1\endcsname
571 \else
572 % The general wording of \badenverr may not be ideal.
573 \expandafter\checkenv\csname#1\endcsname
574 \csname E#1\endcsname
575 \endgroup
576 \fi
577 }
578
579 \newhelp\EMsimple{Press RETURN to continue.}
580
581
582 % Be sure we're in horizontal mode when doing a tie, since we make space
583 % equivalent to this in @example-like environments. Otherwise, a space
584 % at the beginning of a line will start with \penalty -- and
585 % since \penalty is valid in vertical mode, we'd end up putting the
586 % penalty on the vertical list instead of in the new paragraph.
587 {\catcode`@ = 11
588 % Avoid using \@M directly, because that causes trouble
589 % if the definition is written into an index file.
590 \global\let\tiepenalty = \@M
591 \gdef\tie{\leavevmode\penalty\tiepenalty\ }
592 }
593
594 % @: forces normal size whitespace following.
595 \def\:{\spacefactor=1000 }
596
597 % @* forces a line break.
598 \def\*{\unskip\hfil\break\hbox{}\ignorespaces}
599
600 % @/ allows a line break.
601 \let\/=\allowbreak
602
603 % @. is an end-of-sentence period.
604 \def\.{.\spacefactor=\endofsentencespacefactor\space}
605
606 % @! is an end-of-sentence bang.
607 \def\!{!\spacefactor=\endofsentencespacefactor\space}
608
609 % @? is an end-of-sentence query.
610 \def\?{?\spacefactor=\endofsentencespacefactor\space}
611
612 % @frenchspacing on|off says whether to put extra space after punctuation.
613 %
614 \def\onword{on}
615 \def\offword{off}
616 %
617 \parseargdef\frenchspacing{%
618 \def\temp{#1}%
619 \ifx\temp\onword \plainfrenchspacing
620 \else\ifx\temp\offword \plainnonfrenchspacing
621 \else
622 \errhelp = \EMsimple
623 \errmessage{Unknown @frenchspacing option `\temp', must be on|off}%
624 \fi\fi
625 }
626
627 % @w prevents a word break. Without the \leavevmode, @w at the
628 % beginning of a paragraph, when TeX is still in vertical mode, would
629 % produce a whole line of output instead of starting the paragraph.
630 \def\w#1{\leavevmode\hbox{#1}}
631
632 % @group ... @end group forces ... to be all on one page, by enclosing
633 % it in a TeX vbox. We use \vtop instead of \vbox to construct the box
634 % to keep its height that of a normal line. According to the rules for
635 % \topskip (p.114 of the TeXbook), the glue inserted is
636 % max (\topskip - \ht (first item), 0). If that height is large,
637 % therefore, no glue is inserted, and the space between the headline and
638 % the text is small, which looks bad.
639 %
640 % Another complication is that the group might be very large. This can
641 % cause the glue on the previous page to be unduly stretched, because it
642 % does not have much material. In this case, it's better to add an
643 % explicit \vfill so that the extra space is at the bottom. The
644 % threshold for doing this is if the group is more than \vfilllimit
645 % percent of a page (\vfilllimit can be changed inside of @tex).
646 %
647 \newbox\groupbox
648 \def\vfilllimit{0.7}
649 %
650 \envdef\group{%
651 \ifnum\catcode`\^^M=\active \else
652 \errhelp = \groupinvalidhelp
653 \errmessage{@group invalid in context where filling is enabled}%
654 \fi
655 \startsavinginserts
656 %
657 \setbox\groupbox = \vtop\bgroup
658 % Do @comment since we are called inside an environment such as
659 % @example, where each end-of-line in the input causes an
660 % end-of-line in the output. We don't want the end-of-line after
661 % the `@group' to put extra space in the output. Since @group
662 % should appear on a line by itself (according to the Texinfo
663 % manual), we don't worry about eating any user text.
664 \comment
665 }
666 %
667 % The \vtop produces a box with normal height and large depth; thus, TeX puts
668 % \baselineskip glue before it, and (when the next line of text is done)
669 % \lineskip glue after it. Thus, space below is not quite equal to space
670 % above. But it's pretty close.
671 \def\Egroup{%
672 % To get correct interline space between the last line of the group
673 % and the first line afterwards, we have to propagate \prevdepth.
674 \endgraf % Not \par, as it may have been set to \lisppar.
675 \global\dimen1 = \prevdepth
676 \egroup % End the \vtop.
677 % \dimen0 is the vertical size of the group's box.
678 \dimen0 = \ht\groupbox \advance\dimen0 by \dp\groupbox
679 % \dimen2 is how much space is left on the page (more or less).
680 \dimen2 = \pageheight \advance\dimen2 by -\pagetotal
681 % if the group doesn't fit on the current page, and it's a big big
682 % group, force a page break.
683 \ifdim \dimen0 > \dimen2
684 \ifdim \pagetotal < \vfilllimit\pageheight
685 \page
686 \fi
687 \fi
688 \box\groupbox
689 \prevdepth = \dimen1
690 \checkinserts
691 }
692 %
693 % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
694 % message, so this ends up printing `@group can only ...'.
695 %
696 \newhelp\groupinvalidhelp{%
697 group can only be used in environments such as @example,^^J%
698 where each line of input produces a line of output.}
699
700 % @need space-in-mils
701 % forces a page break if there is not space-in-mils remaining.
702
703 \newdimen\mil \mil=0.001in
704
705 \parseargdef\need{%
706 % Ensure vertical mode, so we don't make a big box in the middle of a
707 % paragraph.
708 \par
709 %
710 % If the @need value is less than one line space, it's useless.
711 \dimen0 = #1\mil
712 \dimen2 = \ht\strutbox
713 \advance\dimen2 by \dp\strutbox
714 \ifdim\dimen0 > \dimen2
715 %
716 % Do a \strut just to make the height of this box be normal, so the
717 % normal leading is inserted relative to the preceding line.
718 % And a page break here is fine.
719 \vtop to #1\mil{\strut\vfil}%
720 %
721 % TeX does not even consider page breaks if a penalty added to the
722 % main vertical list is 10000 or more. But in order to see if the
723 % empty box we just added fits on the page, we must make it consider
724 % page breaks. On the other hand, we don't want to actually break the
725 % page after the empty box. So we use a penalty of 9999.
726 %
727 % There is an extremely small chance that TeX will actually break the
728 % page at this \penalty, if there are no other feasible breakpoints in
729 % sight. (If the user is using lots of big @group commands, which
730 % almost-but-not-quite fill up a page, TeX will have a hard time doing
731 % good page breaking, for example.) However, I could not construct an
732 % example where a page broke at this \penalty; if it happens in a real
733 % document, then we can reconsider our strategy.
734 \penalty9999
735 %
736 % Back up by the size of the box, whether we did a page break or not.
737 \kern -#1\mil
738 %
739 % Do not allow a page break right after this kern.
740 \nobreak
741 \fi
742 }
743
744 % @br forces paragraph break (and is undocumented).
745
746 \let\br = \par
747
748 % @page forces the start of a new page.
749 %
750 \def\page{\par\vfill\supereject}
751
752 % @exdent text....
753 % outputs text on separate line in roman font, starting at standard page margin
754
755 % This records the amount of indent in the innermost environment.
756 % That's how much \exdent should take out.
757 \newskip\exdentamount
758
759 % This defn is used inside fill environments such as @defun.
760 \parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
761
762 % This defn is used inside nofill environments such as @example.
763 \parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
764 \leftline{\hskip\leftskip{\rm#1}}}}
765
766 % @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
767 % paragraph. For more general purposes, use the \margin insertion
768 % class. WHICH is `l' or `r'. Not documented, written for gawk manual.
769 %
770 \newskip\inmarginspacing \inmarginspacing=1cm
771 \def\strutdepth{\dp\strutbox}
772 %
773 \def\doinmargin#1#2{\strut\vadjust{%
774 \nobreak
775 \kern-\strutdepth
776 \vtop to \strutdepth{%
777 \baselineskip=\strutdepth
778 \vss
779 % if you have multiple lines of stuff to put here, you'll need to
780 % make the vbox yourself of the appropriate size.
781 \ifx#1l%
782 \llap{\ignorespaces #2\hskip\inmarginspacing}%
783 \else
784 \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
785 \fi
786 \null
787 }%
788 }}
789 \def\inleftmargin{\doinmargin l}
790 \def\inrightmargin{\doinmargin r}
791 %
792 % @inmargin{TEXT [, RIGHT-TEXT]}
793 % (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
794 % else use TEXT for both).
795 %
796 \def\inmargin#1{\parseinmargin #1,,\finish}
797 \def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
798 \setbox0 = \hbox{\ignorespaces #2}%
799 \ifdim\wd0 > 0pt
800 \def\lefttext{#1}% have both texts
801 \def\righttext{#2}%
802 \else
803 \def\lefttext{#1}% have only one text
804 \def\righttext{#1}%
805 \fi
806 %
807 \ifodd\pageno
808 \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
809 \else
810 \def\temp{\inleftmargin\lefttext}%
811 \fi
812 \temp
813 }
814
815 % @| inserts a changebar to the left of the current line. It should
816 % surround any changed text. This approach does *not* work if the
817 % change spans more than two lines of output. To handle that, we would
818 % have adopt a much more difficult approach (putting marks into the main
819 % vertical list for the beginning and end of each change). This command
820 % is not documented, not supported, and doesn't work.
821 %
822 \def\|{%
823 % \vadjust can only be used in horizontal mode.
824 \leavevmode
825 %
826 % Append this vertical mode material after the current line in the output.
827 \vadjust{%
828 % We want to insert a rule with the height and depth of the current
829 % leading; that is exactly what \strutbox is supposed to record.
830 \vskip-\baselineskip
831 %
832 % \vadjust-items are inserted at the left edge of the type. So
833 % the \llap here moves out into the left-hand margin.
834 \llap{%
835 %
836 % For a thicker or thinner bar, change the `1pt'.
837 \vrule height\baselineskip width1pt
838 %
839 % This is the space between the bar and the text.
840 \hskip 12pt
841 }%
842 }%
843 }
844
845 % @include FILE -- \input text of FILE.
846 %
847 \def\include{\parseargusing\filenamecatcodes\includezzz}
848 \def\includezzz#1{%
849 \pushthisfilestack
850 \def\thisfile{#1}%
851 {%
852 \makevalueexpandable % we want to expand any @value in FILE.
853 \turnoffactive % and allow special characters in the expansion
854 \indexnofonts % Allow `@@' and other weird things in file names.
855 \wlog{texinfo.tex: doing @include of #1^^J}%
856 \edef\temp{\noexpand\input #1 }%
857 %
858 % This trickery is to read FILE outside of a group, in case it makes
859 % definitions, etc.
860 \expandafter
861 }\temp
862 \popthisfilestack
863 }
864 \def\filenamecatcodes{%
865 \catcode`\\=\other
866 \catcode`~=\other
867 \catcode`^=\other
868 \catcode`_=\other
869 \catcode`|=\other
870 \catcode`<=\other
871 \catcode`>=\other
872 \catcode`+=\other
873 \catcode`-=\other
874 \catcode`\`=\other
875 \catcode`\'=\other
876 }
877
878 \def\pushthisfilestack{%
879 \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
880 }
881 \def\pushthisfilestackX{%
882 \expandafter\pushthisfilestackY\thisfile\StackTerm
883 }
884 \def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
885 \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
886 }
887
888 \def\popthisfilestack{\errthisfilestackempty}
889 \def\errthisfilestackempty{\errmessage{Internal error:
890 the stack of filenames is empty.}}
891 %
892 \def\thisfile{}
893
894 % @center line
895 % outputs that line, centered.
896 %
897 \parseargdef\center{%
898 \ifhmode
899 \let\centersub\centerH
900 \else
901 \let\centersub\centerV
902 \fi
903 \centersub{\hfil \ignorespaces#1\unskip \hfil}%
904 \let\centersub\relax % don't let the definition persist, just in case
905 }
906 \def\centerH#1{{%
907 \hfil\break
908 \advance\hsize by -\leftskip
909 \advance\hsize by -\rightskip
910 \line{#1}%
911 \break
912 }}
913 %
914 \newcount\centerpenalty
915 \def\centerV#1{%
916 % The idea here is the same as in \startdefun, \cartouche, etc.: if
917 % @center is the first thing after a section heading, we need to wipe
918 % out the negative parskip inserted by \sectionheading, but still
919 % prevent a page break here.
920 \centerpenalty = \lastpenalty
921 \ifnum\centerpenalty>10000 \vskip\parskip \fi
922 \ifnum\centerpenalty>9999 \penalty\centerpenalty \fi
923 \line{\kern\leftskip #1\kern\rightskip}%
924 }
925
926 % @sp n outputs n lines of vertical space
927 %
928 \parseargdef\sp{\vskip #1\baselineskip}
929
930 % @comment ...line which is ignored...
931 % @c is the same as @comment
932 % @ignore ... @end ignore is another way to write a comment
933 %
934 \def\comment{\begingroup \catcode`\^^M=\other%
935 \catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
936 \commentxxx}
937 {\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
938 %
939 \let\c=\comment
940
941 % @paragraphindent NCHARS
942 % We'll use ems for NCHARS, close enough.
943 % NCHARS can also be the word `asis' or `none'.
944 % We cannot feasibly implement @paragraphindent asis, though.
945 %
946 \def\asisword{asis} % no translation, these are keywords
947 \def\noneword{none}
948 %
949 \parseargdef\paragraphindent{%
950 \def\temp{#1}%
951 \ifx\temp\asisword
952 \else
953 \ifx\temp\noneword
954 \defaultparindent = 0pt
955 \else
956 \defaultparindent = #1em
957 \fi
958 \fi
959 \parindent = \defaultparindent
960 }
961
962 % @exampleindent NCHARS
963 % We'll use ems for NCHARS like @paragraphindent.
964 % It seems @exampleindent asis isn't necessary, but
965 % I preserve it to make it similar to @paragraphindent.
966 \parseargdef\exampleindent{%
967 \def\temp{#1}%
968 \ifx\temp\asisword
969 \else
970 \ifx\temp\noneword
971 \lispnarrowing = 0pt
972 \else
973 \lispnarrowing = #1em
974 \fi
975 \fi
976 }
977
978 % @firstparagraphindent WORD
979 % If WORD is `none', then suppress indentation of the first paragraph
980 % after a section heading. If WORD is `insert', then do indent at such
981 % paragraphs.
982 %
983 % The paragraph indentation is suppressed or not by calling
984 % \suppressfirstparagraphindent, which the sectioning commands do.
985 % We switch the definition of this back and forth according to WORD.
986 % By default, we suppress indentation.
987 %
988 \def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
989 \def\insertword{insert}
990 %
991 \parseargdef\firstparagraphindent{%
992 \def\temp{#1}%
993 \ifx\temp\noneword
994 \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
995 \else\ifx\temp\insertword
996 \let\suppressfirstparagraphindent = \relax
997 \else
998 \errhelp = \EMsimple
999 \errmessage{Unknown @firstparagraphindent option `\temp'}%
1000 \fi\fi
1001 }
1002
1003 % Here is how we actually suppress indentation. Redefine \everypar to
1004 % \kern backwards by \parindent, and then reset itself to empty.
1005 %
1006 % We also make \indent itself not actually do anything until the next
1007 % paragraph.
1008 %
1009 \gdef\dosuppressfirstparagraphindent{%
1010 \gdef\indent{%
1011 \restorefirstparagraphindent
1012 \indent
1013 }%
1014 \gdef\noindent{%
1015 \restorefirstparagraphindent
1016 \noindent
1017 }%
1018 \global\everypar = {%
1019 \kern -\parindent
1020 \restorefirstparagraphindent
1021 }%
1022 }
1023
1024 \gdef\restorefirstparagraphindent{%
1025 \global \let \indent = \ptexindent
1026 \global \let \noindent = \ptexnoindent
1027 \global \everypar = {}%
1028 }
1029
1030
1031 % @refill is a no-op.
1032 \let\refill=\relax
1033
1034 % If working on a large document in chapters, it is convenient to
1035 % be able to disable indexing, cross-referencing, and contents, for test runs.
1036 % This is done with @novalidate (before @setfilename).
1037 %
1038 \newif\iflinks \linkstrue % by default we want the aux files.
1039 \let\novalidate = \linksfalse
1040
1041 % @setfilename is done at the beginning of every texinfo file.
1042 % So open here the files we need to have open while reading the input.
1043 % This makes it possible to make a .fmt file for texinfo.
1044 \def\setfilename{%
1045 \fixbackslash % Turn off hack to swallow `\input texinfo'.
1046 \iflinks
1047 \tryauxfile
1048 % Open the new aux file. TeX will close it automatically at exit.
1049 \immediate\openout\auxfile=\jobname.aux
1050 \fi % \openindices needs to do some work in any case.
1051 \openindices
1052 \let\setfilename=\comment % Ignore extra @setfilename cmds.
1053 %
1054 % If texinfo.cnf is present on the system, read it.
1055 % Useful for site-wide @afourpaper, etc.
1056 \openin 1 texinfo.cnf
1057 \ifeof 1 \else \input texinfo.cnf \fi
1058 \closein 1
1059 %
1060 \comment % Ignore the actual filename.
1061 }
1062
1063 % Called from \setfilename.
1064 %
1065 \def\openindices{%
1066 \newindex{cp}%
1067 \newcodeindex{fn}%
1068 \newcodeindex{vr}%
1069 \newcodeindex{tp}%
1070 \newcodeindex{ky}%
1071 \newcodeindex{pg}%
1072 }
1073
1074 % @bye.
1075 \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
1076
1077
1078 \message{pdf,}
1079 % adobe `portable' document format
1080 \newcount\tempnum
1081 \newcount\lnkcount
1082 \newtoks\filename
1083 \newcount\filenamelength
1084 \newcount\pgn
1085 \newtoks\toksA
1086 \newtoks\toksB
1087 \newtoks\toksC
1088 \newtoks\toksD
1089 \newbox\boxA
1090 \newcount\countA
1091 \newif\ifpdf
1092 \newif\ifpdfmakepagedest
1093
1094 % when pdftex is run in dvi mode, \pdfoutput is defined (so \pdfoutput=1
1095 % can be set). So we test for \relax and 0 as well as being undefined.
1096 \ifx\pdfoutput\thisisundefined
1097 \else
1098 \ifx\pdfoutput\relax
1099 \else
1100 \ifcase\pdfoutput
1101 \else
1102 \pdftrue
1103 \fi
1104 \fi
1105 \fi
1106
1107 % PDF uses PostScript string constants for the names of xref targets,
1108 % for display in the outlines, and in other places. Thus, we have to
1109 % double any backslashes. Otherwise, a name like "\node" will be
1110 % interpreted as a newline (\n), followed by o, d, e. Not good.
1111 %
1112 % See http://www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html and
1113 % related messages. The final outcome is that it is up to the TeX user
1114 % to double the backslashes and otherwise make the string valid, so
1115 % that's what we do. pdftex 1.30.0 (ca.2005) introduced a primitive to
1116 % do this reliably, so we use it.
1117
1118 % #1 is a control sequence in which to do the replacements,
1119 % which we \xdef.
1120 \def\txiescapepdf#1{%
1121 \ifx\pdfescapestring\thisisundefined
1122 % No primitive available; should we give a warning or log?
1123 % Many times it won't matter.
1124 \else
1125 % The expandable \pdfescapestring primitive escapes parentheses,
1126 % backslashes, and other special chars.
1127 \xdef#1{\pdfescapestring{#1}}%
1128 \fi
1129 }
1130
1131 \newhelp\nopdfimagehelp{Texinfo supports .png, .jpg, .jpeg, and .pdf images
1132 with PDF output, and none of those formats could be found. (.eps cannot
1133 be supported due to the design of the PDF format; use regular TeX (DVI
1134 output) for that.)}
1135
1136 \ifpdf
1137 %
1138 % Color manipulation macros based on pdfcolor.tex,
1139 % except using rgb instead of cmyk; the latter is said to render as a
1140 % very dark gray on-screen and a very dark halftone in print, instead
1141 % of actual black.
1142 \def\rgbDarkRed{0.50 0.09 0.12}
1143 \def\rgbBlack{0 0 0}
1144 %
1145 % k sets the color for filling (usual text, etc.);
1146 % K sets the color for stroking (thin rules, e.g., normal _'s).
1147 \def\pdfsetcolor#1{\pdfliteral{#1 rg #1 RG}}
1148 %
1149 % Set color, and create a mark which defines \thiscolor accordingly,
1150 % so that \makeheadline knows which color to restore.
1151 \def\setcolor#1{%
1152 \xdef\lastcolordefs{\gdef\noexpand\thiscolor{#1}}%
1153 \domark
1154 \pdfsetcolor{#1}%
1155 }
1156 %
1157 \def\maincolor{\rgbBlack}
1158 \pdfsetcolor{\maincolor}
1159 \edef\thiscolor{\maincolor}
1160 \def\lastcolordefs{}
1161 %
1162 \def\makefootline{%
1163 \baselineskip24pt
1164 \line{\pdfsetcolor{\maincolor}\the\footline}%
1165 }
1166 %
1167 \def\makeheadline{%
1168 \vbox to 0pt{%
1169 \vskip-22.5pt
1170 \line{%
1171 \vbox to8.5pt{}%
1172 % Extract \thiscolor definition from the marks.
1173 \getcolormarks
1174 % Typeset the headline with \maincolor, then restore the color.
1175 \pdfsetcolor{\maincolor}\the\headline\pdfsetcolor{\thiscolor}%
1176 }%
1177 \vss
1178 }%
1179 \nointerlineskip
1180 }
1181 %
1182 %
1183 \pdfcatalog{/PageMode /UseOutlines}
1184 %
1185 % #1 is image name, #2 width (might be empty/whitespace), #3 height (ditto).
1186 \def\dopdfimage#1#2#3{%
1187 \def\pdfimagewidth{#2}\setbox0 = \hbox{\ignorespaces #2}%
1188 \def\pdfimageheight{#3}\setbox2 = \hbox{\ignorespaces #3}%
1189 %
1190 % pdftex (and the PDF format) support .pdf, .png, .jpg (among
1191 % others). Let's try in that order, PDF first since if
1192 % someone has a scalable image, presumably better to use that than a
1193 % bitmap.
1194 \let\pdfimgext=\empty
1195 \begingroup
1196 \openin 1 #1.pdf \ifeof 1
1197 \openin 1 #1.PDF \ifeof 1
1198 \openin 1 #1.png \ifeof 1
1199 \openin 1 #1.jpg \ifeof 1
1200 \openin 1 #1.jpeg \ifeof 1
1201 \openin 1 #1.JPG \ifeof 1
1202 \errhelp = \nopdfimagehelp
1203 \errmessage{Could not find image file #1 for pdf}%
1204 \else \gdef\pdfimgext{JPG}%
1205 \fi
1206 \else \gdef\pdfimgext{jpeg}%
1207 \fi
1208 \else \gdef\pdfimgext{jpg}%
1209 \fi
1210 \else \gdef\pdfimgext{png}%
1211 \fi
1212 \else \gdef\pdfimgext{PDF}%
1213 \fi
1214 \else \gdef\pdfimgext{pdf}%
1215 \fi
1216 \closein 1
1217 \endgroup
1218 %
1219 % without \immediate, ancient pdftex seg faults when the same image is
1220 % included twice. (Version 3.14159-pre-1.0-unofficial-20010704.)
1221 \ifnum\pdftexversion < 14
1222 \immediate\pdfimage
1223 \else
1224 \immediate\pdfximage
1225 \fi
1226 \ifdim \wd0 >0pt width \pdfimagewidth \fi
1227 \ifdim \wd2 >0pt height \pdfimageheight \fi
1228 \ifnum\pdftexversion<13
1229 #1.\pdfimgext
1230 \else
1231 {#1.\pdfimgext}%
1232 \fi
1233 \ifnum\pdftexversion < 14 \else
1234 \pdfrefximage \pdflastximage
1235 \fi}
1236 %
1237 \def\pdfmkdest#1{{%
1238 % We have to set dummies so commands such as @code, and characters
1239 % such as \, aren't expanded when present in a section title.
1240 \indexnofonts
1241 \turnoffactive
1242 \makevalueexpandable
1243 \def\pdfdestname{#1}%
1244 \txiescapepdf\pdfdestname
1245 \safewhatsit{\pdfdest name{\pdfdestname} xyz}%
1246 }}
1247 %
1248 % used to mark target names; must be expandable.
1249 \def\pdfmkpgn#1{#1}
1250 %
1251 % by default, use a color that is dark enough to print on paper as
1252 % nearly black, but still distinguishable for online viewing.
1253 \def\urlcolor{\rgbDarkRed}
1254 \def\linkcolor{\rgbDarkRed}
1255 \def\endlink{\setcolor{\maincolor}\pdfendlink}
1256 %
1257 % Adding outlines to PDF; macros for calculating structure of outlines
1258 % come from Petr Olsak
1259 \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
1260 \else \csname#1\endcsname \fi}
1261 \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
1262 \advance\tempnum by 1
1263 \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
1264 %
1265 % #1 is the section text, which is what will be displayed in the
1266 % outline by the pdf viewer. #2 is the pdf expression for the number
1267 % of subentries (or empty, for subsubsections). #3 is the node text,
1268 % which might be empty if this toc entry had no corresponding node.
1269 % #4 is the page number
1270 %
1271 \def\dopdfoutline#1#2#3#4{%
1272 % Generate a link to the node text if that exists; else, use the
1273 % page number. We could generate a destination for the section
1274 % text in the case where a section has no node, but it doesn't
1275 % seem worth the trouble, since most documents are normally structured.
1276 \edef\pdfoutlinedest{#3}%
1277 \ifx\pdfoutlinedest\empty
1278 \def\pdfoutlinedest{#4}%
1279 \else
1280 \txiescapepdf\pdfoutlinedest
1281 \fi
1282 %
1283 % Also escape PDF chars in the display string.
1284 \edef\pdfoutlinetext{#1}%
1285 \txiescapepdf\pdfoutlinetext
1286 %
1287 \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{\pdfoutlinetext}%
1288 }
1289 %
1290 \def\pdfmakeoutlines{%
1291 \begingroup
1292 % Read toc silently, to get counts of subentries for \pdfoutline.
1293 \def\partentry##1##2##3##4{}% ignore parts in the outlines
1294 \def\numchapentry##1##2##3##4{%
1295 \def\thischapnum{##2}%
1296 \def\thissecnum{0}%
1297 \def\thissubsecnum{0}%
1298 }%
1299 \def\numsecentry##1##2##3##4{%
1300 \advancenumber{chap\thischapnum}%
1301 \def\thissecnum{##2}%
1302 \def\thissubsecnum{0}%
1303 }%
1304 \def\numsubsecentry##1##2##3##4{%
1305 \advancenumber{sec\thissecnum}%
1306 \def\thissubsecnum{##2}%
1307 }%
1308 \def\numsubsubsecentry##1##2##3##4{%
1309 \advancenumber{subsec\thissubsecnum}%
1310 }%
1311 \def\thischapnum{0}%
1312 \def\thissecnum{0}%
1313 \def\thissubsecnum{0}%
1314 %
1315 % use \def rather than \let here because we redefine \chapentry et
1316 % al. a second time, below.
1317 \def\appentry{\numchapentry}%
1318 \def\appsecentry{\numsecentry}%
1319 \def\appsubsecentry{\numsubsecentry}%
1320 \def\appsubsubsecentry{\numsubsubsecentry}%
1321 \def\unnchapentry{\numchapentry}%
1322 \def\unnsecentry{\numsecentry}%
1323 \def\unnsubsecentry{\numsubsecentry}%
1324 \def\unnsubsubsecentry{\numsubsubsecentry}%
1325 \readdatafile{toc}%
1326 %
1327 % Read toc second time, this time actually producing the outlines.
1328 % The `-' means take the \expnumber as the absolute number of
1329 % subentries, which we calculated on our first read of the .toc above.
1330 %
1331 % We use the node names as the destinations.
1332 \def\numchapentry##1##2##3##4{%
1333 \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
1334 \def\numsecentry##1##2##3##4{%
1335 \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
1336 \def\numsubsecentry##1##2##3##4{%
1337 \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
1338 \def\numsubsubsecentry##1##2##3##4{% count is always zero
1339 \dopdfoutline{##1}{}{##3}{##4}}%
1340 %
1341 % PDF outlines are displayed using system fonts, instead of
1342 % document fonts. Therefore we cannot use special characters,
1343 % since the encoding is unknown. For example, the eogonek from
1344 % Latin 2 (0xea) gets translated to a | character. Info from
1345 % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
1346 %
1347 % TODO this right, we have to translate 8-bit characters to
1348 % their "best" equivalent, based on the @documentencoding. Too
1349 % much work for too little return. Just use the ASCII equivalents
1350 % we use for the index sort strings.
1351 %
1352 \indexnofonts
1353 \setupdatafile
1354 % We can have normal brace characters in the PDF outlines, unlike
1355 % Texinfo index files. So set that up.
1356 \def\{{\lbracecharliteral}%
1357 \def\}{\rbracecharliteral}%
1358 \catcode`\\=\active \otherbackslash
1359 \input \tocreadfilename
1360 \endgroup
1361 }
1362 {\catcode`[=1 \catcode`]=2
1363 \catcode`{=\other \catcode`}=\other
1364 \gdef\lbracecharliteral[{]%
1365 \gdef\rbracecharliteral[}]%
1366 ]
1367 %
1368 \def\skipspaces#1{\def\PP{#1}\def\D{|}%
1369 \ifx\PP\D\let\nextsp\relax
1370 \else\let\nextsp\skipspaces
1371 \addtokens{\filename}{\PP}%
1372 \advance\filenamelength by 1
1373 \fi
1374 \nextsp}
1375 \def\getfilename#1{%
1376 \filenamelength=0
1377 % If we don't expand the argument now, \skipspaces will get
1378 % snagged on things like "@value{foo}".
1379 \edef\temp{#1}%
1380 \expandafter\skipspaces\temp|\relax
1381 }
1382 \ifnum\pdftexversion < 14
1383 \let \startlink \pdfannotlink
1384 \else
1385 \let \startlink \pdfstartlink
1386 \fi
1387 % make a live url in pdf output.
1388 \def\pdfurl#1{%
1389 \begingroup
1390 % it seems we really need yet another set of dummies; have not
1391 % tried to figure out what each command should do in the context
1392 % of @url. for now, just make @/ a no-op, that's the only one
1393 % people have actually reported a problem with.
1394 %
1395 \normalturnoffactive
1396 \def\@{@}%
1397 \let\/=\empty
1398 \makevalueexpandable
1399 % do we want to go so far as to use \indexnofonts instead of just
1400 % special-casing \var here?
1401 \def\var##1{##1}%
1402 %
1403 \leavevmode\setcolor{\urlcolor}%
1404 \startlink attr{/Border [0 0 0]}%
1405 user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
1406 \endgroup}
1407 \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
1408 \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
1409 \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
1410 \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
1411 \def\maketoks{%
1412 \expandafter\poptoks\the\toksA|ENDTOKS|\relax
1413 \ifx\first0\adn0
1414 \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
1415 \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
1416 \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
1417 \else
1418 \ifnum0=\countA\else\makelink\fi
1419 \ifx\first.\let\next=\done\else
1420 \let\next=\maketoks
1421 \addtokens{\toksB}{\the\toksD}
1422 \ifx\first,\addtokens{\toksB}{\space}\fi
1423 \fi
1424 \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
1425 \next}
1426 \def\makelink{\addtokens{\toksB}%
1427 {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
1428 \def\pdflink#1{%
1429 \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
1430 \setcolor{\linkcolor}#1\endlink}
1431 \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
1432 \else
1433 % non-pdf mode
1434 \let\pdfmkdest = \gobble
1435 \let\pdfurl = \gobble
1436 \let\endlink = \relax
1437 \let\setcolor = \gobble
1438 \let\pdfsetcolor = \gobble
1439 \let\pdfmakeoutlines = \relax
1440 \fi % \ifx\pdfoutput
1441
1442
1443 \message{fonts,}
1444
1445 % Change the current font style to #1, remembering it in \curfontstyle.
1446 % For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
1447 % italics, not bold italics.
1448 %
1449 \def\setfontstyle#1{%
1450 \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
1451 \csname ten#1\endcsname % change the current font
1452 }
1453
1454 % Select #1 fonts with the current style.
1455 %
1456 \def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname}
1457
1458 \def\rm{\fam=0 \setfontstyle{rm}}
1459 \def\it{\fam=\itfam \setfontstyle{it}}
1460 \def\sl{\fam=\slfam \setfontstyle{sl}}
1461 \def\bf{\fam=\bffam \setfontstyle{bf}}\def\bfstylename{bf}
1462 \def\tt{\fam=\ttfam \setfontstyle{tt}}
1463
1464 % Unfortunately, we have to override this for titles and the like, since
1465 % in those cases "rm" is bold. Sigh.
1466 \def\rmisbold{\rm\def\curfontstyle{bf}}
1467
1468 % Texinfo sort of supports the sans serif font style, which plain TeX does not.
1469 % So we set up a \sf.
1470 \newfam\sffam
1471 \def\sf{\fam=\sffam \setfontstyle{sf}}
1472 \let\li = \sf % Sometimes we call it \li, not \sf.
1473
1474 % We don't need math for this font style.
1475 \def\ttsl{\setfontstyle{ttsl}}
1476
1477
1478 % Set the baselineskip to #1, and the lineskip and strut size
1479 % correspondingly. There is no deep meaning behind these magic numbers
1480 % used as factors; they just match (closely enough) what Knuth defined.
1481 %
1482 \def\lineskipfactor{.08333}
1483 \def\strutheightpercent{.70833}
1484 \def\strutdepthpercent {.29167}
1485 %
1486 % can get a sort of poor man's double spacing by redefining this.
1487 \def\baselinefactor{1}
1488 %
1489 \newdimen\textleading
1490 \def\setleading#1{%
1491 \dimen0 = #1\relax
1492 \normalbaselineskip = \baselinefactor\dimen0
1493 \normallineskip = \lineskipfactor\normalbaselineskip
1494 \normalbaselines
1495 \setbox\strutbox =\hbox{%
1496 \vrule width0pt height\strutheightpercent\baselineskip
1497 depth \strutdepthpercent \baselineskip
1498 }%
1499 }
1500
1501 % PDF CMaps. See also LaTeX's t1.cmap.
1502 %
1503 % do nothing with this by default.
1504 \expandafter\let\csname cmapOT1\endcsname\gobble
1505 \expandafter\let\csname cmapOT1IT\endcsname\gobble
1506 \expandafter\let\csname cmapOT1TT\endcsname\gobble
1507
1508 % if we are producing pdf, and we have \pdffontattr, then define cmaps.
1509 % (\pdffontattr was introduced many years ago, but people still run
1510 % older pdftex's; it's easy to conditionalize, so we do.)
1511 \ifpdf \ifx\pdffontattr\thisisundefined \else
1512 \begingroup
1513 \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
1514 \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
1515 %%DocumentNeededResources: ProcSet (CIDInit)
1516 %%IncludeResource: ProcSet (CIDInit)
1517 %%BeginResource: CMap (TeX-OT1-0)
1518 %%Title: (TeX-OT1-0 TeX OT1 0)
1519 %%Version: 1.000
1520 %%EndComments
1521 /CIDInit /ProcSet findresource begin
1522 12 dict begin
1523 begincmap
1524 /CIDSystemInfo
1525 << /Registry (TeX)
1526 /Ordering (OT1)
1527 /Supplement 0
1528 >> def
1529 /CMapName /TeX-OT1-0 def
1530 /CMapType 2 def
1531 1 begincodespacerange
1532 <00> <7F>
1533 endcodespacerange
1534 8 beginbfrange
1535 <00> <01> <0393>
1536 <09> <0A> <03A8>
1537 <23> <26> <0023>
1538 <28> <3B> <0028>
1539 <3F> <5B> <003F>
1540 <5D> <5E> <005D>
1541 <61> <7A> <0061>
1542 <7B> <7C> <2013>
1543 endbfrange
1544 40 beginbfchar
1545 <02> <0398>
1546 <03> <039B>
1547 <04> <039E>
1548 <05> <03A0>
1549 <06> <03A3>
1550 <07> <03D2>
1551 <08> <03A6>
1552 <0B> <00660066>
1553 <0C> <00660069>
1554 <0D> <0066006C>
1555 <0E> <006600660069>
1556 <0F> <00660066006C>
1557 <10> <0131>
1558 <11> <0237>
1559 <12> <0060>
1560 <13> <00B4>
1561 <14> <02C7>
1562 <15> <02D8>
1563 <16> <00AF>
1564 <17> <02DA>
1565 <18> <00B8>
1566 <19> <00DF>
1567 <1A> <00E6>
1568 <1B> <0153>
1569 <1C> <00F8>
1570 <1D> <00C6>
1571 <1E> <0152>
1572 <1F> <00D8>
1573 <21> <0021>
1574 <22> <201D>
1575 <27> <2019>
1576 <3C> <00A1>
1577 <3D> <003D>
1578 <3E> <00BF>
1579 <5C> <201C>
1580 <5F> <02D9>
1581 <60> <2018>
1582 <7D> <02DD>
1583 <7E> <007E>
1584 <7F> <00A8>
1585 endbfchar
1586 endcmap
1587 CMapName currentdict /CMap defineresource pop
1588 end
1589 end
1590 %%EndResource
1591 %%EOF
1592 }\endgroup
1593 \expandafter\edef\csname cmapOT1\endcsname#1{%
1594 \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
1595 }%
1596 %
1597 % \cmapOT1IT
1598 \begingroup
1599 \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
1600 \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
1601 %%DocumentNeededResources: ProcSet (CIDInit)
1602 %%IncludeResource: ProcSet (CIDInit)
1603 %%BeginResource: CMap (TeX-OT1IT-0)
1604 %%Title: (TeX-OT1IT-0 TeX OT1IT 0)
1605 %%Version: 1.000
1606 %%EndComments
1607 /CIDInit /ProcSet findresource begin
1608 12 dict begin
1609 begincmap
1610 /CIDSystemInfo
1611 << /Registry (TeX)
1612 /Ordering (OT1IT)
1613 /Supplement 0
1614 >> def
1615 /CMapName /TeX-OT1IT-0 def
1616 /CMapType 2 def
1617 1 begincodespacerange
1618 <00> <7F>
1619 endcodespacerange
1620 8 beginbfrange
1621 <00> <01> <0393>
1622 <09> <0A> <03A8>
1623 <25> <26> <0025>
1624 <28> <3B> <0028>
1625 <3F> <5B> <003F>
1626 <5D> <5E> <005D>
1627 <61> <7A> <0061>
1628 <7B> <7C> <2013>
1629 endbfrange
1630 42 beginbfchar
1631 <02> <0398>
1632 <03> <039B>
1633 <04> <039E>
1634 <05> <03A0>
1635 <06> <03A3>
1636 <07> <03D2>
1637 <08> <03A6>
1638 <0B> <00660066>
1639 <0C> <00660069>
1640 <0D> <0066006C>
1641 <0E> <006600660069>
1642 <0F> <00660066006C>
1643 <10> <0131>
1644 <11> <0237>
1645 <12> <0060>
1646 <13> <00B4>
1647 <14> <02C7>
1648 <15> <02D8>
1649 <16> <00AF>
1650 <17> <02DA>
1651 <18> <00B8>
1652 <19> <00DF>
1653 <1A> <00E6>
1654 <1B> <0153>
1655 <1C> <00F8>
1656 <1D> <00C6>
1657 <1E> <0152>
1658 <1F> <00D8>
1659 <21> <0021>
1660 <22> <201D>
1661 <23> <0023>
1662 <24> <00A3>
1663 <27> <2019>
1664 <3C> <00A1>
1665 <3D> <003D>
1666 <3E> <00BF>
1667 <5C> <201C>
1668 <5F> <02D9>
1669 <60> <2018>
1670 <7D> <02DD>
1671 <7E> <007E>
1672 <7F> <00A8>
1673 endbfchar
1674 endcmap
1675 CMapName currentdict /CMap defineresource pop
1676 end
1677 end
1678 %%EndResource
1679 %%EOF
1680 }\endgroup
1681 \expandafter\edef\csname cmapOT1IT\endcsname#1{%
1682 \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
1683 }%
1684 %
1685 % \cmapOT1TT
1686 \begingroup
1687 \catcode`\^^M=\active \def^^M{^^J}% Output line endings as the ^^J char.
1688 \catcode`\%=12 \immediate\pdfobj stream {%!PS-Adobe-3.0 Resource-CMap
1689 %%DocumentNeededResources: ProcSet (CIDInit)
1690 %%IncludeResource: ProcSet (CIDInit)
1691 %%BeginResource: CMap (TeX-OT1TT-0)
1692 %%Title: (TeX-OT1TT-0 TeX OT1TT 0)
1693 %%Version: 1.000
1694 %%EndComments
1695 /CIDInit /ProcSet findresource begin
1696 12 dict begin
1697 begincmap
1698 /CIDSystemInfo
1699 << /Registry (TeX)
1700 /Ordering (OT1TT)
1701 /Supplement 0
1702 >> def
1703 /CMapName /TeX-OT1TT-0 def
1704 /CMapType 2 def
1705 1 begincodespacerange
1706 <00> <7F>
1707 endcodespacerange
1708 5 beginbfrange
1709 <00> <01> <0393>
1710 <09> <0A> <03A8>
1711 <21> <26> <0021>
1712 <28> <5F> <0028>
1713 <61> <7E> <0061>
1714 endbfrange
1715 32 beginbfchar
1716 <02> <0398>
1717 <03> <039B>
1718 <04> <039E>
1719 <05> <03A0>
1720 <06> <03A3>
1721 <07> <03D2>
1722 <08> <03A6>
1723 <0B> <2191>
1724 <0C> <2193>
1725 <0D> <0027>
1726 <0E> <00A1>
1727 <0F> <00BF>
1728 <10> <0131>
1729 <11> <0237>
1730 <12> <0060>
1731 <13> <00B4>
1732 <14> <02C7>
1733 <15> <02D8>
1734 <16> <00AF>
1735 <17> <02DA>
1736 <18> <00B8>
1737 <19> <00DF>
1738 <1A> <00E6>
1739 <1B> <0153>
1740 <1C> <00F8>
1741 <1D> <00C6>
1742 <1E> <0152>
1743 <1F> <00D8>
1744 <20> <2423>
1745 <27> <2019>
1746 <60> <2018>
1747 <7F> <00A8>
1748 endbfchar
1749 endcmap
1750 CMapName currentdict /CMap defineresource pop
1751 end
1752 end
1753 %%EndResource
1754 %%EOF
1755 }\endgroup
1756 \expandafter\edef\csname cmapOT1TT\endcsname#1{%
1757 \pdffontattr#1{/ToUnicode \the\pdflastobj\space 0 R}%
1758 }%
1759 \fi\fi
1760
1761
1762 % Set the font macro #1 to the font named \fontprefix#2.
1763 % #3 is the font's design size, #4 is a scale factor, #5 is the CMap
1764 % encoding (only OT1, OT1IT and OT1TT are allowed, or empty to omit).
1765 % Example:
1766 % #1 = \textrm
1767 % #2 = \rmshape
1768 % #3 = 10
1769 % #4 = \mainmagstep
1770 % #5 = OT1
1771 %
1772 \def\setfont#1#2#3#4#5{%
1773 \font#1=\fontprefix#2#3 scaled #4
1774 \csname cmap#5\endcsname#1%
1775 }
1776 % This is what gets called when #5 of \setfont is empty.
1777 \let\cmap\gobble
1778 %
1779 % (end of cmaps)
1780
1781 % Use cm as the default font prefix.
1782 % To specify the font prefix, you must define \fontprefix
1783 % before you read in texinfo.tex.
1784 \ifx\fontprefix\thisisundefined
1785 \def\fontprefix{cm}
1786 \fi
1787 % Support font families that don't use the same naming scheme as CM.
1788 \def\rmshape{r}
1789 \def\rmbshape{bx} % where the normal face is bold
1790 \def\bfshape{b}
1791 \def\bxshape{bx}
1792 \def\ttshape{tt}
1793 \def\ttbshape{tt}
1794 \def\ttslshape{sltt}
1795 \def\itshape{ti}
1796 \def\itbshape{bxti}
1797 \def\slshape{sl}
1798 \def\slbshape{bxsl}
1799 \def\sfshape{ss}
1800 \def\sfbshape{ss}
1801 \def\scshape{csc}
1802 \def\scbshape{csc}
1803
1804 % Definitions for a main text size of 11pt. (The default in Texinfo.)
1805 %
1806 \def\definetextfontsizexi{%
1807 % Text fonts (11.2pt, magstep1).
1808 \def\textnominalsize{11pt}
1809 \edef\mainmagstep{\magstephalf}
1810 \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
1811 \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
1812 \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
1813 \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
1814 \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
1815 \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
1816 \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
1817 \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
1818 \font\texti=cmmi10 scaled \mainmagstep
1819 \font\textsy=cmsy10 scaled \mainmagstep
1820 \def\textecsize{1095}
1821
1822 % A few fonts for @defun names and args.
1823 \setfont\defbf\bfshape{10}{\magstep1}{OT1}
1824 \setfont\deftt\ttshape{10}{\magstep1}{OT1TT}
1825 \setfont\defttsl\ttslshape{10}{\magstep1}{OT1TT}
1826 \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
1827
1828 % Fonts for indices, footnotes, small examples (9pt).
1829 \def\smallnominalsize{9pt}
1830 \setfont\smallrm\rmshape{9}{1000}{OT1}
1831 \setfont\smalltt\ttshape{9}{1000}{OT1TT}
1832 \setfont\smallbf\bfshape{10}{900}{OT1}
1833 \setfont\smallit\itshape{9}{1000}{OT1IT}
1834 \setfont\smallsl\slshape{9}{1000}{OT1}
1835 \setfont\smallsf\sfshape{9}{1000}{OT1}
1836 \setfont\smallsc\scshape{10}{900}{OT1}
1837 \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
1838 \font\smalli=cmmi9
1839 \font\smallsy=cmsy9
1840 \def\smallecsize{0900}
1841
1842 % Fonts for small examples (8pt).
1843 \def\smallernominalsize{8pt}
1844 \setfont\smallerrm\rmshape{8}{1000}{OT1}
1845 \setfont\smallertt\ttshape{8}{1000}{OT1TT}
1846 \setfont\smallerbf\bfshape{10}{800}{OT1}
1847 \setfont\smallerit\itshape{8}{1000}{OT1IT}
1848 \setfont\smallersl\slshape{8}{1000}{OT1}
1849 \setfont\smallersf\sfshape{8}{1000}{OT1}
1850 \setfont\smallersc\scshape{10}{800}{OT1}
1851 \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
1852 \font\smalleri=cmmi8
1853 \font\smallersy=cmsy8
1854 \def\smallerecsize{0800}
1855
1856 % Fonts for title page (20.4pt):
1857 \def\titlenominalsize{20pt}
1858 \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
1859 \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
1860 \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
1861 \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
1862 \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
1863 \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
1864 \let\titlebf=\titlerm
1865 \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
1866 \font\titlei=cmmi12 scaled \magstep3
1867 \font\titlesy=cmsy10 scaled \magstep4
1868 \def\titleecsize{2074}
1869
1870 % Chapter (and unnumbered) fonts (17.28pt).
1871 \def\chapnominalsize{17pt}
1872 \setfont\chaprm\rmbshape{12}{\magstep2}{OT1}
1873 \setfont\chapit\itbshape{10}{\magstep3}{OT1IT}
1874 \setfont\chapsl\slbshape{10}{\magstep3}{OT1}
1875 \setfont\chaptt\ttbshape{12}{\magstep2}{OT1TT}
1876 \setfont\chapttsl\ttslshape{10}{\magstep3}{OT1TT}
1877 \setfont\chapsf\sfbshape{17}{1000}{OT1}
1878 \let\chapbf=\chaprm
1879 \setfont\chapsc\scbshape{10}{\magstep3}{OT1}
1880 \font\chapi=cmmi12 scaled \magstep2
1881 \font\chapsy=cmsy10 scaled \magstep3
1882 \def\chapecsize{1728}
1883
1884 % Section fonts (14.4pt).
1885 \def\secnominalsize{14pt}
1886 \setfont\secrm\rmbshape{12}{\magstep1}{OT1}
1887 \setfont\secit\itbshape{10}{\magstep2}{OT1IT}
1888 \setfont\secsl\slbshape{10}{\magstep2}{OT1}
1889 \setfont\sectt\ttbshape{12}{\magstep1}{OT1TT}
1890 \setfont\secttsl\ttslshape{10}{\magstep2}{OT1TT}
1891 \setfont\secsf\sfbshape{12}{\magstep1}{OT1}
1892 \let\secbf\secrm
1893 \setfont\secsc\scbshape{10}{\magstep2}{OT1}
1894 \font\seci=cmmi12 scaled \magstep1
1895 \font\secsy=cmsy10 scaled \magstep2
1896 \def\sececsize{1440}
1897
1898 % Subsection fonts (13.15pt).
1899 \def\ssecnominalsize{13pt}
1900 \setfont\ssecrm\rmbshape{12}{\magstephalf}{OT1}
1901 \setfont\ssecit\itbshape{10}{1315}{OT1IT}
1902 \setfont\ssecsl\slbshape{10}{1315}{OT1}
1903 \setfont\ssectt\ttbshape{12}{\magstephalf}{OT1TT}
1904 \setfont\ssecttsl\ttslshape{10}{1315}{OT1TT}
1905 \setfont\ssecsf\sfbshape{12}{\magstephalf}{OT1}
1906 \let\ssecbf\ssecrm
1907 \setfont\ssecsc\scbshape{10}{1315}{OT1}
1908 \font\sseci=cmmi12 scaled \magstephalf
1909 \font\ssecsy=cmsy10 scaled 1315
1910 \def\ssececsize{1200}
1911
1912 % Reduced fonts for @acro in text (10pt).
1913 \def\reducednominalsize{10pt}
1914 \setfont\reducedrm\rmshape{10}{1000}{OT1}
1915 \setfont\reducedtt\ttshape{10}{1000}{OT1TT}
1916 \setfont\reducedbf\bfshape{10}{1000}{OT1}
1917 \setfont\reducedit\itshape{10}{1000}{OT1IT}
1918 \setfont\reducedsl\slshape{10}{1000}{OT1}
1919 \setfont\reducedsf\sfshape{10}{1000}{OT1}
1920 \setfont\reducedsc\scshape{10}{1000}{OT1}
1921 \setfont\reducedttsl\ttslshape{10}{1000}{OT1TT}
1922 \font\reducedi=cmmi10
1923 \font\reducedsy=cmsy10
1924 \def\reducedecsize{1000}
1925
1926 \textleading = 13.2pt % line spacing for 11pt CM
1927 \textfonts % reset the current fonts
1928 \rm
1929 } % end of 11pt text font size definitions, \definetextfontsizexi
1930
1931
1932 % Definitions to make the main text be 10pt Computer Modern, with
1933 % section, chapter, etc., sizes following suit. This is for the GNU
1934 % Press printing of the Emacs 22 manual. Maybe other manuals in the
1935 % future. Used with @smallbook, which sets the leading to 12pt.
1936 %
1937 \def\definetextfontsizex{%
1938 % Text fonts (10pt).
1939 \def\textnominalsize{10pt}
1940 \edef\mainmagstep{1000}
1941 \setfont\textrm\rmshape{10}{\mainmagstep}{OT1}
1942 \setfont\texttt\ttshape{10}{\mainmagstep}{OT1TT}
1943 \setfont\textbf\bfshape{10}{\mainmagstep}{OT1}
1944 \setfont\textit\itshape{10}{\mainmagstep}{OT1IT}
1945 \setfont\textsl\slshape{10}{\mainmagstep}{OT1}
1946 \setfont\textsf\sfshape{10}{\mainmagstep}{OT1}
1947 \setfont\textsc\scshape{10}{\mainmagstep}{OT1}
1948 \setfont\textttsl\ttslshape{10}{\mainmagstep}{OT1TT}
1949 \font\texti=cmmi10 scaled \mainmagstep
1950 \font\textsy=cmsy10 scaled \mainmagstep
1951 \def\textecsize{1000}
1952
1953 % A few fonts for @defun names and args.
1954 \setfont\defbf\bfshape{10}{\magstephalf}{OT1}
1955 \setfont\deftt\ttshape{10}{\magstephalf}{OT1TT}
1956 \setfont\defttsl\ttslshape{10}{\magstephalf}{OT1TT}
1957 \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
1958
1959 % Fonts for indices, footnotes, small examples (9pt).
1960 \def\smallnominalsize{9pt}
1961 \setfont\smallrm\rmshape{9}{1000}{OT1}
1962 \setfont\smalltt\ttshape{9}{1000}{OT1TT}
1963 \setfont\smallbf\bfshape{10}{900}{OT1}
1964 \setfont\smallit\itshape{9}{1000}{OT1IT}
1965 \setfont\smallsl\slshape{9}{1000}{OT1}
1966 \setfont\smallsf\sfshape{9}{1000}{OT1}
1967 \setfont\smallsc\scshape{10}{900}{OT1}
1968 \setfont\smallttsl\ttslshape{10}{900}{OT1TT}
1969 \font\smalli=cmmi9
1970 \font\smallsy=cmsy9
1971 \def\smallecsize{0900}
1972
1973 % Fonts for small examples (8pt).
1974 \def\smallernominalsize{8pt}
1975 \setfont\smallerrm\rmshape{8}{1000}{OT1}
1976 \setfont\smallertt\ttshape{8}{1000}{OT1TT}
1977 \setfont\smallerbf\bfshape{10}{800}{OT1}
1978 \setfont\smallerit\itshape{8}{1000}{OT1IT}
1979 \setfont\smallersl\slshape{8}{1000}{OT1}
1980 \setfont\smallersf\sfshape{8}{1000}{OT1}
1981 \setfont\smallersc\scshape{10}{800}{OT1}
1982 \setfont\smallerttsl\ttslshape{10}{800}{OT1TT}
1983 \font\smalleri=cmmi8
1984 \font\smallersy=cmsy8
1985 \def\smallerecsize{0800}
1986
1987 % Fonts for title page (20.4pt):
1988 \def\titlenominalsize{20pt}
1989 \setfont\titlerm\rmbshape{12}{\magstep3}{OT1}
1990 \setfont\titleit\itbshape{10}{\magstep4}{OT1IT}
1991 \setfont\titlesl\slbshape{10}{\magstep4}{OT1}
1992 \setfont\titlett\ttbshape{12}{\magstep3}{OT1TT}
1993 \setfont\titlettsl\ttslshape{10}{\magstep4}{OT1TT}
1994 \setfont\titlesf\sfbshape{17}{\magstep1}{OT1}
1995 \let\titlebf=\titlerm
1996 \setfont\titlesc\scbshape{10}{\magstep4}{OT1}
1997 \font\titlei=cmmi12 scaled \magstep3
1998 \font\titlesy=cmsy10 scaled \magstep4
1999 \def\titleecsize{2074}
2000
2001 % Chapter fonts (14.4pt).
2002 \def\chapnominalsize{14pt}
2003 \setfont\chaprm\rmbshape{12}{\magstep1}{OT1}
2004 \setfont\chapit\itbshape{10}{\magstep2}{OT1IT}
2005 \setfont\chapsl\slbshape{10}{\magstep2}{OT1}
2006 \setfont\chaptt\ttbshape{12}{\magstep1}{OT1TT}
2007 \setfont\chapttsl\ttslshape{10}{\magstep2}{OT1TT}
2008 \setfont\chapsf\sfbshape{12}{\magstep1}{OT1}
2009 \let\chapbf\chaprm
2010 \setfont\chapsc\scbshape{10}{\magstep2}{OT1}
2011 \font\chapi=cmmi12 scaled \magstep1
2012 \font\chapsy=cmsy10 scaled \magstep2
2013 \def\chapecsize{1440}
2014
2015 % Section fonts (12pt).
2016 \def\secnominalsize{12pt}
2017 \setfont\secrm\rmbshape{12}{1000}{OT1}
2018 \setfont\secit\itbshape{10}{\magstep1}{OT1IT}
2019 \setfont\secsl\slbshape{10}{\magstep1}{OT1}
2020 \setfont\sectt\ttbshape{12}{1000}{OT1TT}
2021 \setfont\secttsl\ttslshape{10}{\magstep1}{OT1TT}
2022 \setfont\secsf\sfbshape{12}{1000}{OT1}
2023 \let\secbf\secrm
2024 \setfont\secsc\scbshape{10}{\magstep1}{OT1}
2025 \font\seci=cmmi12
2026 \font\secsy=cmsy10 scaled \magstep1
2027 \def\sececsize{1200}
2028
2029 % Subsection fonts (10pt).
2030 \def\ssecnominalsize{10pt}
2031 \setfont\ssecrm\rmbshape{10}{1000}{OT1}
2032 \setfont\ssecit\itbshape{10}{1000}{OT1IT}
2033 \setfont\ssecsl\slbshape{10}{1000}{OT1}
2034 \setfont\ssectt\ttbshape{10}{1000}{OT1TT}
2035 \setfont\ssecttsl\ttslshape{10}{1000}{OT1TT}
2036 \setfont\ssecsf\sfbshape{10}{1000}{OT1}
2037 \let\ssecbf\ssecrm
2038 \setfont\ssecsc\scbshape{10}{1000}{OT1}
2039 \font\sseci=cmmi10
2040 \font\ssecsy=cmsy10
2041 \def\ssececsize{1000}
2042
2043 % Reduced fonts for @acro in text (9pt).
2044 \def\reducednominalsize{9pt}
2045 \setfont\reducedrm\rmshape{9}{1000}{OT1}
2046 \setfont\reducedtt\ttshape{9}{1000}{OT1TT}
2047 \setfont\reducedbf\bfshape{10}{900}{OT1}
2048 \setfont\reducedit\itshape{9}{1000}{OT1IT}
2049 \setfont\reducedsl\slshape{9}{1000}{OT1}
2050 \setfont\reducedsf\sfshape{9}{1000}{OT1}
2051 \setfont\reducedsc\scshape{10}{900}{OT1}
2052 \setfont\reducedttsl\ttslshape{10}{900}{OT1TT}
2053 \font\reducedi=cmmi9
2054 \font\reducedsy=cmsy9
2055 \def\reducedecsize{0900}
2056
2057 \divide\parskip by 2 % reduce space between paragraphs
2058 \textleading = 12pt % line spacing for 10pt CM
2059 \textfonts % reset the current fonts
2060 \rm
2061 } % end of 10pt text font size definitions, \definetextfontsizex
2062
2063
2064 % We provide the user-level command
2065 % @fonttextsize 10
2066 % (or 11) to redefine the text font size. pt is assumed.
2067 %
2068 \def\xiword{11}
2069 \def\xword{10}
2070 \def\xwordpt{10pt}
2071 %
2072 \parseargdef\fonttextsize{%
2073 \def\textsizearg{#1}%
2074 %\wlog{doing @fonttextsize \textsizearg}%
2075 %
2076 % Set \globaldefs so that documents can use this inside @tex, since
2077 % makeinfo 4.8 does not support it, but we need it nonetheless.
2078 %
2079 \begingroup \globaldefs=1
2080 \ifx\textsizearg\xword \definetextfontsizex
2081 \else \ifx\textsizearg\xiword \definetextfontsizexi
2082 \else
2083 \errhelp=\EMsimple
2084 \errmessage{@fonttextsize only supports `10' or `11', not `\textsizearg'}
2085 \fi\fi
2086 \endgroup
2087 }
2088
2089
2090 % In order for the font changes to affect most math symbols and letters,
2091 % we have to define the \textfont of the standard families. Since
2092 % texinfo doesn't allow for producing subscripts and superscripts except
2093 % in the main text, we don't bother to reset \scriptfont and
2094 % \scriptscriptfont (which would also require loading a lot more fonts).
2095 %
2096 \def\resetmathfonts{%
2097 \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
2098 \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
2099 \textfont\ttfam=\tentt \textfont\sffam=\tensf
2100 }
2101
2102 % The font-changing commands redefine the meanings of \tenSTYLE, instead
2103 % of just \STYLE. We do this because \STYLE needs to also set the
2104 % current \fam for math mode. Our \STYLE (e.g., \rm) commands hardwire
2105 % \tenSTYLE to set the current font.
2106 %
2107 % Each font-changing command also sets the names \lsize (one size lower)
2108 % and \lllsize (three sizes lower). These relative commands are used in
2109 % the LaTeX logo and acronyms.
2110 %
2111 % This all needs generalizing, badly.
2112 %
2113 \def\textfonts{%
2114 \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
2115 \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
2116 \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
2117 \let\tenttsl=\textttsl
2118 \def\curfontsize{text}%
2119 \def\lsize{reduced}\def\lllsize{smaller}%
2120 \resetmathfonts \setleading{\textleading}}
2121 \def\titlefonts{%
2122 \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
2123 \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
2124 \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
2125 \let\tenttsl=\titlettsl
2126 \def\curfontsize{title}%
2127 \def\lsize{chap}\def\lllsize{subsec}%
2128 \resetmathfonts \setleading{27pt}}
2129 \def\titlefont#1{{\titlefonts\rmisbold #1}}
2130 \def\chapfonts{%
2131 \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
2132 \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
2133 \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
2134 \let\tenttsl=\chapttsl
2135 \def\curfontsize{chap}%
2136 \def\lsize{sec}\def\lllsize{text}%
2137 \resetmathfonts \setleading{19pt}}
2138 \def\secfonts{%
2139 \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
2140 \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
2141 \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
2142 \let\tenttsl=\secttsl
2143 \def\curfontsize{sec}%
2144 \def\lsize{subsec}\def\lllsize{reduced}%
2145 \resetmathfonts \setleading{16pt}}
2146 \def\subsecfonts{%
2147 \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
2148 \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
2149 \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
2150 \let\tenttsl=\ssecttsl
2151 \def\curfontsize{ssec}%
2152 \def\lsize{text}\def\lllsize{small}%
2153 \resetmathfonts \setleading{15pt}}
2154 \let\subsubsecfonts = \subsecfonts
2155 \def\reducedfonts{%
2156 \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
2157 \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
2158 \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
2159 \let\tenttsl=\reducedttsl
2160 \def\curfontsize{reduced}%
2161 \def\lsize{small}\def\lllsize{smaller}%
2162 \resetmathfonts \setleading{10.5pt}}
2163 \def\smallfonts{%
2164 \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
2165 \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
2166 \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
2167 \let\tenttsl=\smallttsl
2168 \def\curfontsize{small}%
2169 \def\lsize{smaller}\def\lllsize{smaller}%
2170 \resetmathfonts \setleading{10.5pt}}
2171 \def\smallerfonts{%
2172 \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
2173 \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
2174 \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
2175 \let\tenttsl=\smallerttsl
2176 \def\curfontsize{smaller}%
2177 \def\lsize{smaller}\def\lllsize{smaller}%
2178 \resetmathfonts \setleading{9.5pt}}
2179
2180 % Fonts for short table of contents.
2181 \setfont\shortcontrm\rmshape{12}{1000}{OT1}
2182 \setfont\shortcontbf\bfshape{10}{\magstep1}{OT1} % no cmb12
2183 \setfont\shortcontsl\slshape{12}{1000}{OT1}
2184 \setfont\shortconttt\ttshape{12}{1000}{OT1TT}
2185
2186 % Define these just so they can be easily changed for other fonts.
2187 \def\angleleft{$\langle$}
2188 \def\angleright{$\rangle$}
2189
2190 % Set the fonts to use with the @small... environments.
2191 \let\smallexamplefonts = \smallfonts
2192
2193 % About \smallexamplefonts. If we use \smallfonts (9pt), @smallexample
2194 % can fit this many characters:
2195 % 8.5x11=86 smallbook=72 a4=90 a5=69
2196 % If we use \scriptfonts (8pt), then we can fit this many characters:
2197 % 8.5x11=90+ smallbook=80 a4=90+ a5=77
2198 % For me, subjectively, the few extra characters that fit aren't worth
2199 % the additional smallness of 8pt. So I'm making the default 9pt.
2200 %
2201 % By the way, for comparison, here's what fits with @example (10pt):
2202 % 8.5x11=71 smallbook=60 a4=75 a5=58
2203 % --karl, 24jan03.
2204
2205 % Set up the default fonts, so we can use them for creating boxes.
2206 %
2207 \definetextfontsizexi
2208
2209
2210 \message{markup,}
2211
2212 % Check if we are currently using a typewriter font. Since all the
2213 % Computer Modern typewriter fonts have zero interword stretch (and
2214 % shrink), and it is reasonable to expect all typewriter fonts to have
2215 % this property, we can check that font parameter.
2216 %
2217 \def\ifmonospace{\ifdim\fontdimen3\font=0pt }
2218
2219 % Markup style infrastructure. \defmarkupstylesetup\INITMACRO will
2220 % define and register \INITMACRO to be called on markup style changes.
2221 % \INITMACRO can check \currentmarkupstyle for the innermost
2222 % style and the set of \ifmarkupSTYLE switches for all styles
2223 % currently in effect.
2224 \newif\ifmarkupvar
2225 \newif\ifmarkupsamp
2226 \newif\ifmarkupkey
2227 %\newif\ifmarkupfile % @file == @samp.
2228 %\newif\ifmarkupoption % @option == @samp.
2229 \newif\ifmarkupcode
2230 \newif\ifmarkupkbd
2231 %\newif\ifmarkupenv % @env == @code.
2232 %\newif\ifmarkupcommand % @command == @code.
2233 \newif\ifmarkuptex % @tex (and part of @math, for now).
2234 \newif\ifmarkupexample
2235 \newif\ifmarkupverb
2236 \newif\ifmarkupverbatim
2237
2238 \let\currentmarkupstyle\empty
2239
2240 \def\setupmarkupstyle#1{%
2241 \csname markup#1true\endcsname
2242 \def\currentmarkupstyle{#1}%
2243 \markupstylesetup
2244 }
2245
2246 \let\markupstylesetup\empty
2247
2248 \def\defmarkupstylesetup#1{%
2249 \expandafter\def\expandafter\markupstylesetup
2250 \expandafter{\markupstylesetup #1}%
2251 \def#1%
2252 }
2253
2254 % Markup style setup for left and right quotes.
2255 \defmarkupstylesetup\markupsetuplq{%
2256 \expandafter\let\expandafter \temp
2257 \csname markupsetuplq\currentmarkupstyle\endcsname
2258 \ifx\temp\relax \markupsetuplqdefault \else \temp \fi
2259 }
2260
2261 \defmarkupstylesetup\markupsetuprq{%
2262 \expandafter\let\expandafter \temp
2263 \csname markupsetuprq\currentmarkupstyle\endcsname
2264 \ifx\temp\relax \markupsetuprqdefault \else \temp \fi
2265 }
2266
2267 {
2268 \catcode`\'=\active
2269 \catcode`\`=\active
2270
2271 \gdef\markupsetuplqdefault{\let`\lq}
2272 \gdef\markupsetuprqdefault{\let'\rq}
2273
2274 \gdef\markupsetcodequoteleft{\let`\codequoteleft}
2275 \gdef\markupsetcodequoteright{\let'\codequoteright}
2276 }
2277
2278 \let\markupsetuplqcode \markupsetcodequoteleft
2279 \let\markupsetuprqcode \markupsetcodequoteright
2280 %
2281 \let\markupsetuplqexample \markupsetcodequoteleft
2282 \let\markupsetuprqexample \markupsetcodequoteright
2283 %
2284 \let\markupsetuplqkbd \markupsetcodequoteleft
2285 \let\markupsetuprqkbd \markupsetcodequoteright
2286 %
2287 \let\markupsetuplqsamp \markupsetcodequoteleft
2288 \let\markupsetuprqsamp \markupsetcodequoteright
2289 %
2290 \let\markupsetuplqverb \markupsetcodequoteleft
2291 \let\markupsetuprqverb \markupsetcodequoteright
2292 %
2293 \let\markupsetuplqverbatim \markupsetcodequoteleft
2294 \let\markupsetuprqverbatim \markupsetcodequoteright
2295
2296 % Allow an option to not use regular directed right quote/apostrophe
2297 % (char 0x27), but instead the undirected quote from cmtt (char 0x0d).
2298 % The undirected quote is ugly, so don't make it the default, but it
2299 % works for pasting with more pdf viewers (at least evince), the
2300 % lilypond developers report. xpdf does work with the regular 0x27.
2301 %
2302 \def\codequoteright{%
2303 \expandafter\ifx\csname SETtxicodequoteundirected\endcsname\relax
2304 \expandafter\ifx\csname SETcodequoteundirected\endcsname\relax
2305 '%
2306 \else \char'15 \fi
2307 \else \char'15 \fi
2308 }
2309 %
2310 % and a similar option for the left quote char vs. a grave accent.
2311 % Modern fonts display ASCII 0x60 as a grave accent, so some people like
2312 % the code environments to do likewise.
2313 %
2314 \def\codequoteleft{%
2315 \expandafter\ifx\csname SETtxicodequotebacktick\endcsname\relax
2316 \expandafter\ifx\csname SETcodequotebacktick\endcsname\relax
2317 % [Knuth] pp. 380,381,391
2318 % \relax disables Spanish ligatures ?` and !` of \tt font.
2319 \relax`%
2320 \else \char'22 \fi
2321 \else \char'22 \fi
2322 }
2323
2324 % Commands to set the quote options.
2325 %
2326 \parseargdef\codequoteundirected{%
2327 \def\temp{#1}%
2328 \ifx\temp\onword
2329 \expandafter\let\csname SETtxicodequoteundirected\endcsname
2330 = t%
2331 \else\ifx\temp\offword
2332 \expandafter\let\csname SETtxicodequoteundirected\endcsname
2333 = \relax
2334 \else
2335 \errhelp = \EMsimple
2336 \errmessage{Unknown @codequoteundirected value `\temp', must be on|off}%
2337 \fi\fi
2338 }
2339 %
2340 \parseargdef\codequotebacktick{%
2341 \def\temp{#1}%
2342 \ifx\temp\onword
2343 \expandafter\let\csname SETtxicodequotebacktick\endcsname
2344 = t%
2345 \else\ifx\temp\offword
2346 \expandafter\let\csname SETtxicodequotebacktick\endcsname
2347 = \relax
2348 \else
2349 \errhelp = \EMsimple
2350 \errmessage{Unknown @codequotebacktick value `\temp', must be on|off}%
2351 \fi\fi
2352 }
2353
2354 % [Knuth] pp. 380,381,391, disable Spanish ligatures ?` and !` of \tt font.
2355 \def\noligaturesquoteleft{\relax\lq}
2356
2357 % Count depth in font-changes, for error checks
2358 \newcount\fontdepth \fontdepth=0
2359
2360 % Font commands.
2361
2362 % #1 is the font command (\sl or \it), #2 is the text to slant.
2363 % If we are in a monospaced environment, however, 1) always use \ttsl,
2364 % and 2) do not add an italic correction.
2365 \def\dosmartslant#1#2{%
2366 \ifusingtt
2367 {{\ttsl #2}\let\next=\relax}%
2368 {\def\next{{#1#2}\futurelet\next\smartitaliccorrection}}%
2369 \next
2370 }
2371 \def\smartslanted{\dosmartslant\sl}
2372 \def\smartitalic{\dosmartslant\it}
2373
2374 % Output an italic correction unless \next (presumed to be the following
2375 % character) is such as not to need one.
2376 \def\smartitaliccorrection{%
2377 \ifx\next,%
2378 \else\ifx\next-%
2379 \else\ifx\next.%
2380 \else\ptexslash
2381 \fi\fi\fi
2382 \aftersmartic
2383 }
2384
2385 % Unconditional use \ttsl, and no ic. @var is set to this for defuns.
2386 \def\ttslanted#1{{\ttsl #1}}
2387
2388 % @cite is like \smartslanted except unconditionally use \sl. We never want
2389 % ttsl for book titles, do we?
2390 \def\cite#1{{\sl #1}\futurelet\next\smartitaliccorrection}
2391
2392 \def\aftersmartic{}
2393 \def\var#1{%
2394 \let\saveaftersmartic = \aftersmartic
2395 \def\aftersmartic{\null\let\aftersmartic=\saveaftersmartic}%
2396 \smartslanted{#1}%
2397 }
2398
2399 \let\i=\smartitalic
2400 \let\slanted=\smartslanted
2401 \let\dfn=\smartslanted
2402 \let\emph=\smartitalic
2403
2404 % Explicit font changes: @r, @sc, undocumented @ii.
2405 \def\r#1{{\rm #1}} % roman font
2406 \def\sc#1{{\smallcaps#1}} % smallcaps font
2407 \def\ii#1{{\it #1}} % italic font
2408
2409 % @b, explicit bold. Also @strong.
2410 \def\b#1{{\bf #1}}
2411 \let\strong=\b
2412
2413 % @sansserif, explicit sans.
2414 \def\sansserif#1{{\sf #1}}
2415
2416 % We can't just use \exhyphenpenalty, because that only has effect at
2417 % the end of a paragraph. Restore normal hyphenation at the end of the
2418 % group within which \nohyphenation is presumably called.
2419 %
2420 \def\nohyphenation{\hyphenchar\font = -1 \aftergroup\restorehyphenation}
2421 \def\restorehyphenation{\hyphenchar\font = `- }
2422
2423 % Set sfcode to normal for the chars that usually have another value.
2424 % Can't use plain's \frenchspacing because it uses the `\x notation, and
2425 % sometimes \x has an active definition that messes things up.
2426 %
2427 \catcode`@=11
2428 \def\plainfrenchspacing{%
2429 \sfcode\dotChar =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
2430 \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
2431 \def\endofsentencespacefactor{1000}% for @. and friends
2432 }
2433 \def\plainnonfrenchspacing{%
2434 \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000
2435 \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250
2436 \def\endofsentencespacefactor{3000}% for @. and friends
2437 }
2438 \catcode`@=\other
2439 \def\endofsentencespacefactor{3000}% default
2440
2441 % @t, explicit typewriter.
2442 \def\t#1{%
2443 {\tt \rawbackslash \plainfrenchspacing #1}%
2444 \null
2445 }
2446
2447 % @samp.
2448 \def\samp#1{{\setupmarkupstyle{samp}\lq\tclose{#1}\rq\null}}
2449
2450 % @indicateurl is \samp, that is, with quotes.
2451 \let\indicateurl=\samp
2452
2453 % @code (and similar) prints in typewriter, but with spaces the same
2454 % size as normal in the surrounding text, without hyphenation, etc.
2455 % This is a subroutine for that.
2456 \def\tclose#1{%
2457 {%
2458 % Change normal interword space to be same as for the current font.
2459 \spaceskip = \fontdimen2\font
2460 %
2461 % Switch to typewriter.
2462 \tt
2463 %
2464 % But `\ ' produces the large typewriter interword space.
2465 \def\ {{\spaceskip = 0pt{} }}%
2466 %
2467 % Turn off hyphenation.
2468 \nohyphenation
2469 %
2470 \rawbackslash
2471 \plainfrenchspacing
2472 #1%
2473 }%
2474 \null % reset spacefactor to 1000
2475 }
2476
2477 % We *must* turn on hyphenation at `-' and `_' in @code.
2478 % Otherwise, it is too hard to avoid overfull hboxes
2479 % in the Emacs manual, the Library manual, etc.
2480 %
2481 % Unfortunately, TeX uses one parameter (\hyphenchar) to control
2482 % both hyphenation at - and hyphenation within words.
2483 % We must therefore turn them both off (\tclose does that)
2484 % and arrange explicitly to hyphenate at a dash.
2485 % -- rms.
2486 {
2487 \catcode`\-=\active \catcode`\_=\active
2488 \catcode`\'=\active \catcode`\`=\active
2489 \global\let'=\rq \global\let`=\lq % default definitions
2490 %
2491 \global\def\code{\begingroup
2492 \setupmarkupstyle{code}%
2493 % The following should really be moved into \setupmarkupstyle handlers.
2494 \catcode\dashChar=\active \catcode\underChar=\active
2495 \ifallowcodebreaks
2496 \let-\codedash
2497 \let_\codeunder
2498 \else
2499 \let-\normaldash
2500 \let_\realunder
2501 \fi
2502 \codex
2503 }
2504 }
2505
2506 \def\codex #1{\tclose{#1}\endgroup}
2507
2508 \def\normaldash{-}
2509 \def\codedash{-\discretionary{}{}{}}
2510 \def\codeunder{%
2511 % this is all so @math{@code{var_name}+1} can work. In math mode, _
2512 % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
2513 % will therefore expand the active definition of _, which is us
2514 % (inside @code that is), therefore an endless loop.
2515 \ifusingtt{\ifmmode
2516 \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
2517 \else\normalunderscore \fi
2518 \discretionary{}{}{}}%
2519 {\_}%
2520 }
2521
2522 % An additional complication: the above will allow breaks after, e.g.,
2523 % each of the four underscores in __typeof__. This is bad.
2524 % @allowcodebreaks provides a document-level way to turn breaking at -
2525 % and _ on and off.
2526 %
2527 \newif\ifallowcodebreaks \allowcodebreakstrue
2528
2529 \def\keywordtrue{true}
2530 \def\keywordfalse{false}
2531
2532 \parseargdef\allowcodebreaks{%
2533 \def\txiarg{#1}%
2534 \ifx\txiarg\keywordtrue
2535 \allowcodebreakstrue
2536 \else\ifx\txiarg\keywordfalse
2537 \allowcodebreaksfalse
2538 \else
2539 \errhelp = \EMsimple
2540 \errmessage{Unknown @allowcodebreaks option `\txiarg', must be true|false}%
2541 \fi\fi
2542 }
2543
2544 % For @command, @env, @file, @option quotes seem unnecessary,
2545 % so use \code rather than \samp.
2546 \let\command=\code
2547 \let\env=\code
2548 \let\file=\code
2549 \let\option=\code
2550
2551 % @uref (abbreviation for `urlref') takes an optional (comma-separated)
2552 % second argument specifying the text to display and an optional third
2553 % arg as text to display instead of (rather than in addition to) the url
2554 % itself. First (mandatory) arg is the url.
2555 % (This \urefnobreak definition isn't used now, leaving it for a while
2556 % for comparison.)
2557 \def\urefnobreak#1{\dourefnobreak #1,,,\finish}
2558 \def\dourefnobreak#1,#2,#3,#4\finish{\begingroup
2559 \unsepspaces
2560 \pdfurl{#1}%
2561 \setbox0 = \hbox{\ignorespaces #3}%
2562 \ifdim\wd0 > 0pt
2563 \unhbox0 % third arg given, show only that
2564 \else
2565 \setbox0 = \hbox{\ignorespaces #2}%
2566 \ifdim\wd0 > 0pt
2567 \ifpdf
2568 \unhbox0 % PDF: 2nd arg given, show only it
2569 \else
2570 \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
2571 \fi
2572 \else
2573 \code{#1}% only url given, so show it
2574 \fi
2575 \fi
2576 \endlink
2577 \endgroup}
2578
2579 % This \urefbreak definition is the active one.
2580 \def\urefbreak{\begingroup \urefcatcodes \dourefbreak}
2581 \let\uref=\urefbreak
2582 \def\dourefbreak#1{\urefbreakfinish #1,,,\finish}
2583 \def\urefbreakfinish#1,#2,#3,#4\finish{% doesn't work in @example
2584 \unsepspaces
2585 \pdfurl{#1}%
2586 \setbox0 = \hbox{\ignorespaces #3}%
2587 \ifdim\wd0 > 0pt
2588 \unhbox0 % third arg given, show only that
2589 \else
2590 \setbox0 = \hbox{\ignorespaces #2}%
2591 \ifdim\wd0 > 0pt
2592 \ifpdf
2593 \unhbox0 % PDF: 2nd arg given, show only it
2594 \else
2595 \unhbox0\ (\urefcode{#1})% DVI: 2nd arg given, show both it and url
2596 \fi
2597 \else
2598 \urefcode{#1}% only url given, so show it
2599 \fi
2600 \fi
2601 \endlink
2602 \endgroup}
2603
2604 % Allow line breaks around only a few characters (only).
2605 \def\urefcatcodes{%
2606 \catcode\ampChar=\active \catcode\dotChar=\active
2607 \catcode\hashChar=\active \catcode\questChar=\active
2608 \catcode\slashChar=\active
2609 }
2610 {
2611 \urefcatcodes
2612 %
2613 \global\def\urefcode{\begingroup
2614 \setupmarkupstyle{code}%
2615 \urefcatcodes
2616 \let&\urefcodeamp
2617 \let.\urefcodedot
2618 \let#\urefcodehash
2619 \let?\urefcodequest
2620 \let/\urefcodeslash
2621 \codex
2622 }
2623 %
2624 % By default, they are just regular characters.
2625 \global\def&{\normalamp}
2626 \global\def.{\normaldot}
2627 \global\def#{\normalhash}
2628 \global\def?{\normalquest}
2629 \global\def/{\normalslash}
2630 }
2631
2632 % we put a little stretch before and after the breakable chars, to help
2633 % line breaking of long url's. The unequal skips make look better in
2634 % cmtt at least, especially for dots.
2635 \def\urefprestretch{\urefprebreak \hskip0pt plus.13em }
2636 \def\urefpoststretch{\urefpostbreak \hskip0pt plus.1em }
2637 %
2638 \def\urefcodeamp{\urefprestretch \&\urefpoststretch}
2639 \def\urefcodedot{\urefprestretch .\urefpoststretch}
2640 \def\urefcodehash{\urefprestretch \#\urefpoststretch}
2641 \def\urefcodequest{\urefprestretch ?\urefpoststretch}
2642 \def\urefcodeslash{\futurelet\next\urefcodeslashfinish}
2643 {
2644 \catcode`\/=\active
2645 \global\def\urefcodeslashfinish{%
2646 \urefprestretch \slashChar
2647 % Allow line break only after the final / in a sequence of
2648 % slashes, to avoid line break between the slashes in http://.
2649 \ifx\next/\else \urefpoststretch \fi
2650 }
2651 }
2652
2653 % One more complication: by default we'll break after the special
2654 % characters, but some people like to break before the special chars, so
2655 % allow that. Also allow no breaking at all, for manual control.
2656 %
2657 \parseargdef\urefbreakstyle{%
2658 \def\txiarg{#1}%
2659 \ifx\txiarg\wordnone
2660 \def\urefprebreak{\nobreak}\def\urefpostbreak{\nobreak}
2661 \else\ifx\txiarg\wordbefore
2662 \def\urefprebreak{\allowbreak}\def\urefpostbreak{\nobreak}
2663 \else\ifx\txiarg\wordafter
2664 \def\urefprebreak{\nobreak}\def\urefpostbreak{\allowbreak}
2665 \else
2666 \errhelp = \EMsimple
2667 \errmessage{Unknown @urefbreakstyle setting `\txiarg'}%
2668 \fi\fi\fi
2669 }
2670 \def\wordafter{after}
2671 \def\wordbefore{before}
2672 \def\wordnone{none}
2673
2674 \urefbreakstyle after
2675
2676 % @url synonym for @uref, since that's how everyone uses it.
2677 %
2678 \let\url=\uref
2679
2680 % rms does not like angle brackets --karl, 17may97.
2681 % So now @email is just like @uref, unless we are pdf.
2682 %
2683 %\def\email#1{\angleleft{\tt #1}\angleright}
2684 \ifpdf
2685 \def\email#1{\doemail#1,,\finish}
2686 \def\doemail#1,#2,#3\finish{\begingroup
2687 \unsepspaces
2688 \pdfurl{mailto:#1}%
2689 \setbox0 = \hbox{\ignorespaces #2}%
2690 \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
2691 \endlink
2692 \endgroup}
2693 \else
2694 \let\email=\uref
2695 \fi
2696
2697 % @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
2698 % `example' (@kbd uses ttsl only inside of @example and friends),
2699 % or `code' (@kbd uses normal tty font always).
2700 \parseargdef\kbdinputstyle{%
2701 \def\txiarg{#1}%
2702 \ifx\txiarg\worddistinct
2703 \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
2704 \else\ifx\txiarg\wordexample
2705 \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
2706 \else\ifx\txiarg\wordcode
2707 \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
2708 \else
2709 \errhelp = \EMsimple
2710 \errmessage{Unknown @kbdinputstyle setting `\txiarg'}%
2711 \fi\fi\fi
2712 }
2713 \def\worddistinct{distinct}
2714 \def\wordexample{example}
2715 \def\wordcode{code}
2716
2717 % Default is `distinct'.
2718 \kbdinputstyle distinct
2719
2720 % @kbd is like @code, except that if the argument is just one @key command,
2721 % then @kbd has no effect.
2722 \def\kbd#1{{\def\look{#1}\expandafter\kbdsub\look??\par}}
2723
2724 \def\xkey{\key}
2725 \def\kbdsub#1#2#3\par{%
2726 \def\one{#1}\def\three{#3}\def\threex{??}%
2727 \ifx\one\xkey\ifx\threex\three \key{#2}%
2728 \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi
2729 \else{\tclose{\kbdfont\setupmarkupstyle{kbd}\look}}\fi
2730 }
2731
2732 % definition of @key that produces a lozenge. Doesn't adjust to text size.
2733 %\setfont\keyrm\rmshape{8}{1000}{OT1}
2734 %\font\keysy=cmsy9
2735 %\def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
2736 % \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
2737 % \vbox{\hrule\kern-0.4pt
2738 % \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
2739 % \kern-0.4pt\hrule}%
2740 % \kern-.06em\raise0.4pt\hbox{\angleright}}}}
2741
2742 % definition of @key with no lozenge. If the current font is already
2743 % monospace, don't change it; that way, we respect @kbdinputstyle. But
2744 % if it isn't monospace, then use \tt.
2745 %
2746 \def\key#1{{\setupmarkupstyle{key}%
2747 \nohyphenation
2748 \ifmonospace\else\tt\fi
2749 #1}\null}
2750
2751 % @clicksequence{File @click{} Open ...}
2752 \def\clicksequence#1{\begingroup #1\endgroup}
2753
2754 % @clickstyle @arrow (by default)
2755 \parseargdef\clickstyle{\def\click{#1}}
2756 \def\click{\arrow}
2757
2758 % Typeset a dimension, e.g., `in' or `pt'. The only reason for the
2759 % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
2760 %
2761 \def\dmn#1{\thinspace #1}
2762
2763 % @l was never documented to mean ``switch to the Lisp font'',
2764 % and it is not used as such in any manual I can find. We need it for
2765 % Polish suppressed-l. --karl, 22sep96.
2766 %\def\l#1{{\li #1}\null}
2767
2768 % @acronym for "FBI", "NATO", and the like.
2769 % We print this one point size smaller, since it's intended for
2770 % all-uppercase.
2771 %
2772 \def\acronym#1{\doacronym #1,,\finish}
2773 \def\doacronym#1,#2,#3\finish{%
2774 {\selectfonts\lsize #1}%
2775 \def\temp{#2}%
2776 \ifx\temp\empty \else
2777 \space ({\unsepspaces \ignorespaces \temp \unskip})%
2778 \fi
2779 \null % reset \spacefactor=1000
2780 }
2781
2782 % @abbr for "Comput. J." and the like.
2783 % No font change, but don't do end-of-sentence spacing.
2784 %
2785 \def\abbr#1{\doabbr #1,,\finish}
2786 \def\doabbr#1,#2,#3\finish{%
2787 {\plainfrenchspacing #1}%
2788 \def\temp{#2}%
2789 \ifx\temp\empty \else
2790 \space ({\unsepspaces \ignorespaces \temp \unskip})%
2791 \fi
2792 \null % reset \spacefactor=1000
2793 }
2794
2795 % @asis just yields its argument. Used with @table, for example.
2796 %
2797 \def\asis#1{#1}
2798
2799 % @math outputs its argument in math mode.
2800 %
2801 % One complication: _ usually means subscripts, but it could also mean
2802 % an actual _ character, as in @math{@var{some_variable} + 1}. So make
2803 % _ active, and distinguish by seeing if the current family is \slfam,
2804 % which is what @var uses.
2805 {
2806 \catcode`\_ = \active
2807 \gdef\mathunderscore{%
2808 \catcode`\_=\active
2809 \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
2810 }
2811 }
2812 % Another complication: we want \\ (and @\) to output a math (or tt) \.
2813 % FYI, plain.tex uses \\ as a temporary control sequence (for no
2814 % particular reason), but this is not advertised and we don't care.
2815 %
2816 % The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
2817 \def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
2818 %
2819 \def\math{%
2820 \tex
2821 \mathunderscore
2822 \let\\ = \mathbackslash
2823 \mathactive
2824 % make the texinfo accent commands work in math mode
2825 \let\"=\ddot
2826 \let\'=\acute
2827 \let\==\bar
2828 \let\^=\hat
2829 \let\`=\grave
2830 \let\u=\breve
2831 \let\v=\check
2832 \let\~=\tilde
2833 \let\dotaccent=\dot
2834 $\finishmath
2835 }
2836 \def\finishmath#1{#1$\endgroup} % Close the group opened by \tex.
2837
2838 % Some active characters (such as <) are spaced differently in math.
2839 % We have to reset their definitions in case the @math was an argument
2840 % to a command which sets the catcodes (such as @item or @section).
2841 %
2842 {
2843 \catcode`^ = \active
2844 \catcode`< = \active
2845 \catcode`> = \active
2846 \catcode`+ = \active
2847 \catcode`' = \active
2848 \gdef\mathactive{%
2849 \let^ = \ptexhat
2850 \let< = \ptexless
2851 \let> = \ptexgtr
2852 \let+ = \ptexplus
2853 \let' = \ptexquoteright
2854 }
2855 }
2856
2857 % ctrl is no longer a Texinfo command, but leave this definition for fun.
2858 \def\ctrl #1{{\tt \rawbackslash \hat}#1}
2859
2860 % @inlinefmt{FMTNAME,PROCESSED-TEXT} and @inlineraw{FMTNAME,RAW-TEXT}.
2861 % Ignore unless FMTNAME == tex; then it is like @iftex and @tex,
2862 % except specified as a normal braced arg, so no newlines to worry about.
2863 %
2864 \def\outfmtnametex{tex}
2865 %
2866 \long\def\inlinefmt#1{\doinlinefmt #1,\finish}
2867 \long\def\doinlinefmt#1,#2,\finish{%
2868 \def\inlinefmtname{#1}%
2869 \ifx\inlinefmtname\outfmtnametex \ignorespaces #2\fi
2870 }
2871 % For raw, must switch into @tex before parsing the argument, to avoid
2872 % setting catcodes prematurely. Doing it this way means that, for
2873 % example, @inlineraw{html, foo{bar} gets a parse error instead of being
2874 % ignored. But this isn't important because if people want a literal
2875 % *right* brace they would have to use a command anyway, so they may as
2876 % well use a command to get a left brace too. We could re-use the
2877 % delimiter character idea from \verb, but it seems like overkill.
2878 %
2879 \long\def\inlineraw{\tex \doinlineraw}
2880 \long\def\doinlineraw#1{\doinlinerawtwo #1,\finish}
2881 \def\doinlinerawtwo#1,#2,\finish{%
2882 \def\inlinerawname{#1}%
2883 \ifx\inlinerawname\outfmtnametex \ignorespaces #2\fi
2884 \endgroup % close group opened by \tex.
2885 }
2886
2887
2888 \message{glyphs,}
2889 % and logos.
2890
2891 % @@ prints an @, as does @atchar{}.
2892 \def\@{\char64 }
2893 \let\atchar=\@
2894
2895 % @{ @} @lbracechar{} @rbracechar{} all generate brace characters.
2896 % Unless we're in typewriter, use \ecfont because the CM text fonts do
2897 % not have braces, and we don't want to switch into math.
2898 \def\mylbrace{{\ifmonospace\else\ecfont\fi \char123}}
2899 \def\myrbrace{{\ifmonospace\else\ecfont\fi \char125}}
2900 \let\{=\mylbrace \let\lbracechar=\{
2901 \let\}=\myrbrace \let\rbracechar=\}
2902 \begingroup
2903 % Definitions to produce \{ and \} commands for indices,
2904 % and @{ and @} for the aux/toc files.
2905 \catcode`\{ = \other \catcode`\} = \other
2906 \catcode`\[ = 1 \catcode`\] = 2
2907 \catcode`\! = 0 \catcode`\\ = \other
2908 !gdef!lbracecmd[\{]%
2909 !gdef!rbracecmd[\}]%
2910 !gdef!lbraceatcmd[@{]%
2911 !gdef!rbraceatcmd[@}]%
2912 !endgroup
2913
2914 % @comma{} to avoid , parsing problems.
2915 \let\comma = ,
2916
2917 % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
2918 % Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
2919 \let\, = \ptexc
2920 \let\dotaccent = \ptexdot
2921 \def\ringaccent#1{{\accent23 #1}}
2922 \let\tieaccent = \ptext
2923 \let\ubaraccent = \ptexb
2924 \let\udotaccent = \d
2925
2926 % Other special characters: @questiondown @exclamdown @ordf @ordm
2927 % Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
2928 \def\questiondown{?`}
2929 \def\exclamdown{!`}
2930 \def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}}
2931 \def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}}
2932
2933 % Dotless i and dotless j, used for accents.
2934 \def\imacro{i}
2935 \def\jmacro{j}
2936 \def\dotless#1{%
2937 \def\temp{#1}%
2938 \ifx\temp\imacro \ifmmode\imath \else\ptexi \fi
2939 \else\ifx\temp\jmacro \ifmmode\jmath \else\j \fi
2940 \else \errmessage{@dotless can be used only with i or j}%
2941 \fi\fi
2942 }
2943
2944 % The \TeX{} logo, as in plain, but resetting the spacing so that a
2945 % period following counts as ending a sentence. (Idea found in latex.)
2946 %
2947 \edef\TeX{\TeX \spacefactor=1000 }
2948
2949 % @LaTeX{} logo. Not quite the same results as the definition in
2950 % latex.ltx, since we use a different font for the raised A; it's most
2951 % convenient for us to use an explicitly smaller font, rather than using
2952 % the \scriptstyle font (since we don't reset \scriptstyle and
2953 % \scriptscriptstyle).
2954 %
2955 \def\LaTeX{%
2956 L\kern-.36em
2957 {\setbox0=\hbox{T}%
2958 \vbox to \ht0{\hbox{%
2959 \ifx\textnominalsize\xwordpt
2960 % for 10pt running text, \lllsize (8pt) is too small for the A in LaTeX.
2961 % Revert to plain's \scriptsize, which is 7pt.
2962 \count255=\the\fam $\fam\count255 \scriptstyle A$%
2963 \else
2964 % For 11pt, we can use our lllsize.
2965 \selectfonts\lllsize A%
2966 \fi
2967 }%
2968 \vss
2969 }}%
2970 \kern-.15em
2971 \TeX
2972 }
2973
2974 % Some math mode symbols.
2975 \def\bullet{$\ptexbullet$}
2976 \def\geq{\ifmmode \ge\else $\ge$\fi}
2977 \def\leq{\ifmmode \le\else $\le$\fi}
2978 \def\minus{\ifmmode -\else $-$\fi}
2979
2980 % @dots{} outputs an ellipsis using the current font.
2981 % We do .5em per period so that it has the same spacing in the cm
2982 % typewriter fonts as three actual period characters; on the other hand,
2983 % in other typewriter fonts three periods are wider than 1.5em. So do
2984 % whichever is larger.
2985 %
2986 \def\dots{%
2987 \leavevmode
2988 \setbox0=\hbox{...}% get width of three periods
2989 \ifdim\wd0 > 1.5em
2990 \dimen0 = \wd0
2991 \else
2992 \dimen0 = 1.5em
2993 \fi
2994 \hbox to \dimen0{%
2995 \hskip 0pt plus.25fil
2996 .\hskip 0pt plus1fil
2997 .\hskip 0pt plus1fil
2998 .\hskip 0pt plus.5fil
2999 }%
3000 }
3001
3002 % @enddots{} is an end-of-sentence ellipsis.
3003 %
3004 \def\enddots{%
3005 \dots
3006 \spacefactor=\endofsentencespacefactor
3007 }
3008
3009 % @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
3010 %
3011 % Since these characters are used in examples, they should be an even number of
3012 % \tt widths. Each \tt character is 1en, so two makes it 1em.
3013 %
3014 \def\point{$\star$}
3015 \def\arrow{\leavevmode\raise.05ex\hbox to 1em{\hfil$\rightarrow$\hfil}}
3016 \def\result{\leavevmode\raise.05ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
3017 \def\expansion{\leavevmode\hbox to 1em{\hfil$\mapsto$\hfil}}
3018 \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
3019 \def\equiv{\leavevmode\hbox to 1em{\hfil$\ptexequiv$\hfil}}
3020
3021 % The @error{} command.
3022 % Adapted from the TeXbook's \boxit.
3023 %
3024 \newbox\errorbox
3025 %
3026 {\tentt \global\dimen0 = 3em}% Width of the box.
3027 \dimen2 = .55pt % Thickness of rules
3028 % The text. (`r' is open on the right, `e' somewhat less so on the left.)
3029 \setbox0 = \hbox{\kern-.75pt \reducedsf \putworderror\kern-1.5pt}
3030 %
3031 \setbox\errorbox=\hbox to \dimen0{\hfil
3032 \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
3033 \advance\hsize by -2\dimen2 % Rules.
3034 \vbox{%
3035 \hrule height\dimen2
3036 \hbox{\vrule width\dimen2 \kern3pt % Space to left of text.
3037 \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
3038 \kern3pt\vrule width\dimen2}% Space to right.
3039 \hrule height\dimen2}
3040 \hfil}
3041 %
3042 \def\error{\leavevmode\lower.7ex\copy\errorbox}
3043
3044 % @pounds{} is a sterling sign, which Knuth put in the CM italic font.
3045 %
3046 \def\pounds{{\it\$}}
3047
3048 % @euro{} comes from a separate font, depending on the current style.
3049 % We use the free feym* fonts from the eurosym package by Henrik
3050 % Theiling, which support regular, slanted, bold and bold slanted (and
3051 % "outlined" (blackboard board, sort of) versions, which we don't need).
3052 % It is available from http://www.ctan.org/tex-archive/fonts/eurosym.
3053 %
3054 % Although only regular is the truly official Euro symbol, we ignore
3055 % that. The Euro is designed to be slightly taller than the regular
3056 % font height.
3057 %
3058 % feymr - regular
3059 % feymo - slanted
3060 % feybr - bold
3061 % feybo - bold slanted
3062 %
3063 % There is no good (free) typewriter version, to my knowledge.
3064 % A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide.
3065 % Hmm.
3066 %
3067 % Also doesn't work in math. Do we need to do math with euro symbols?
3068 % Hope not.
3069 %
3070 %
3071 \def\euro{{\eurofont e}}
3072 \def\eurofont{%
3073 % We set the font at each command, rather than predefining it in
3074 % \textfonts and the other font-switching commands, so that
3075 % installations which never need the symbol don't have to have the
3076 % font installed.
3077 %
3078 % There is only one designed size (nominal 10pt), so we always scale
3079 % that to the current nominal size.
3080 %
3081 % By the way, simply using "at 1em" works for cmr10 and the like, but
3082 % does not work for cmbx10 and other extended/shrunken fonts.
3083 %
3084 \def\eurosize{\csname\curfontsize nominalsize\endcsname}%
3085 %
3086 \ifx\curfontstyle\bfstylename
3087 % bold:
3088 \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize
3089 \else
3090 % regular:
3091 \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize
3092 \fi
3093 \thiseurofont
3094 }
3095
3096 % Glyphs from the EC fonts. We don't use \let for the aliases, because
3097 % sometimes we redefine the original macro, and the alias should reflect
3098 % the redefinition.
3099 %
3100 % Use LaTeX names for the Icelandic letters.
3101 \def\DH{{\ecfont \char"D0}} % Eth
3102 \def\dh{{\ecfont \char"F0}} % eth
3103 \def\TH{{\ecfont \char"DE}} % Thorn
3104 \def\th{{\ecfont \char"FE}} % thorn
3105 %
3106 \def\guillemetleft{{\ecfont \char"13}}
3107 \def\guillemotleft{\guillemetleft}
3108 \def\guillemetright{{\ecfont \char"14}}
3109 \def\guillemotright{\guillemetright}
3110 \def\guilsinglleft{{\ecfont \char"0E}}
3111 \def\guilsinglright{{\ecfont \char"0F}}
3112 \def\quotedblbase{{\ecfont \char"12}}
3113 \def\quotesinglbase{{\ecfont \char"0D}}
3114 %
3115 % This positioning is not perfect (see the ogonek LaTeX package), but
3116 % we have the precomposed glyphs for the most common cases. We put the
3117 % tests to use those glyphs in the single \ogonek macro so we have fewer
3118 % dummy definitions to worry about for index entries, etc.
3119 %
3120 % ogonek is also used with other letters in Lithuanian (IOU), but using
3121 % the precomposed glyphs for those is not so easy since they aren't in
3122 % the same EC font.
3123 \def\ogonek#1{{%
3124 \def\temp{#1}%
3125 \ifx\temp\macrocharA\Aogonek
3126 \else\ifx\temp\macrochara\aogonek
3127 \else\ifx\temp\macrocharE\Eogonek
3128 \else\ifx\temp\macrochare\eogonek
3129 \else
3130 \ecfont \setbox0=\hbox{#1}%
3131 \ifdim\ht0=1ex\accent"0C #1%
3132 \else\ooalign{\unhbox0\crcr\hidewidth\char"0C \hidewidth}%
3133 \fi
3134 \fi\fi\fi\fi
3135 }%
3136 }
3137 \def\Aogonek{{\ecfont \char"81}}\def\macrocharA{A}
3138 \def\aogonek{{\ecfont \char"A1}}\def\macrochara{a}
3139 \def\Eogonek{{\ecfont \char"86}}\def\macrocharE{E}
3140 \def\eogonek{{\ecfont \char"A6}}\def\macrochare{e}
3141 %
3142 % Use the ec* fonts (cm-super in outline format) for non-CM glyphs.
3143 \def\ecfont{%
3144 % We can't distinguish serif/sans and italic/slanted, but this
3145 % is used for crude hacks anyway (like adding French and German
3146 % quotes to documents typeset with CM, where we lose kerning), so
3147 % hopefully nobody will notice/care.
3148 \edef\ecsize{\csname\curfontsize ecsize\endcsname}%
3149 \edef\nominalsize{\csname\curfontsize nominalsize\endcsname}%
3150 \ifmonospace
3151 % typewriter:
3152 \font\thisecfont = ectt\ecsize \space at \nominalsize
3153 \else
3154 \ifx\curfontstyle\bfstylename
3155 % bold:
3156 \font\thisecfont = ecb\ifusingit{i}{x}\ecsize \space at \nominalsize
3157 \else
3158 % regular:
3159 \font\thisecfont = ec\ifusingit{ti}{rm}\ecsize \space at \nominalsize
3160 \fi
3161 \fi
3162 \thisecfont
3163 }
3164
3165 % @registeredsymbol - R in a circle. The font for the R should really
3166 % be smaller yet, but lllsize is the best we can do for now.
3167 % Adapted from the plain.tex definition of \copyright.
3168 %
3169 \def\registeredsymbol{%
3170 $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
3171 \hfil\crcr\Orb}}%
3172 }$%
3173 }
3174
3175 % @textdegree - the normal degrees sign.
3176 %
3177 \def\textdegree{$^\circ$}
3178
3179 % Laurent Siebenmann reports \Orb undefined with:
3180 % Textures 1.7.7 (preloaded format=plain 93.10.14) (68K) 16 APR 2004 02:38
3181 % so we'll define it if necessary.
3182 %
3183 \ifx\Orb\thisisundefined
3184 \def\Orb{\mathhexbox20D}
3185 \fi
3186
3187 % Quotes.
3188 \chardef\quotedblleft="5C
3189 \chardef\quotedblright=`\"
3190 \chardef\quoteleft=`\`
3191 \chardef\quoteright=`\'
3192
3193
3194 \message{page headings,}
3195
3196 \newskip\titlepagetopglue \titlepagetopglue = 1.5in
3197 \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
3198
3199 % First the title page. Must do @settitle before @titlepage.
3200 \newif\ifseenauthor
3201 \newif\iffinishedtitlepage
3202
3203 % Do an implicit @contents or @shortcontents after @end titlepage if the
3204 % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
3205 %
3206 \newif\ifsetcontentsaftertitlepage
3207 \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
3208 \newif\ifsetshortcontentsaftertitlepage
3209 \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
3210
3211 \parseargdef\shorttitlepage{%
3212 \begingroup \hbox{}\vskip 1.5in \chaprm \centerline{#1}%
3213 \endgroup\page\hbox{}\page}
3214
3215 \envdef\titlepage{%
3216 % Open one extra group, as we want to close it in the middle of \Etitlepage.
3217 \begingroup
3218 \parindent=0pt \textfonts
3219 % Leave some space at the very top of the page.
3220 \vglue\titlepagetopglue
3221 % No rule at page bottom unless we print one at the top with @title.
3222 \finishedtitlepagetrue
3223 %
3224 % Most title ``pages'' are actually two pages long, with space
3225 % at the top of the second. We don't want the ragged left on the second.
3226 \let\oldpage = \page
3227 \def\page{%
3228 \iffinishedtitlepage\else
3229 \finishtitlepage
3230 \fi
3231 \let\page = \oldpage
3232 \page
3233 \null
3234 }%
3235 }
3236
3237 \def\Etitlepage{%
3238 \iffinishedtitlepage\else
3239 \finishtitlepage
3240 \fi
3241 % It is important to do the page break before ending the group,
3242 % because the headline and footline are only empty inside the group.
3243 % If we use the new definition of \page, we always get a blank page
3244 % after the title page, which we certainly don't want.
3245 \oldpage
3246 \endgroup
3247 %
3248 % Need this before the \...aftertitlepage checks so that if they are
3249 % in effect the toc pages will come out with page numbers.
3250 \HEADINGSon
3251 %
3252 % If they want short, they certainly want long too.
3253 \ifsetshortcontentsaftertitlepage
3254 \shortcontents
3255 \contents
3256 \global\let\shortcontents = \relax
3257 \global\let\contents = \relax
3258 \fi
3259 %
3260 \ifsetcontentsaftertitlepage
3261 \contents
3262 \global\let\contents = \relax
3263 \global\let\shortcontents = \relax
3264 \fi
3265 }
3266
3267 \def\finishtitlepage{%
3268 \vskip4pt \hrule height 2pt width \hsize
3269 \vskip\titlepagebottomglue
3270 \finishedtitlepagetrue
3271 }
3272
3273 % Settings used for typesetting titles: no hyphenation, no indentation,
3274 % don't worry much about spacing, ragged right. This should be used
3275 % inside a \vbox, and fonts need to be set appropriately first. Because
3276 % it is always used for titles, nothing else, we call \rmisbold. \par
3277 % should be specified before the end of the \vbox, since a vbox is a group.
3278 %
3279 \def\raggedtitlesettings{%
3280 \rmisbold
3281 \hyphenpenalty=10000
3282 \parindent=0pt
3283 \tolerance=5000
3284 \ptexraggedright
3285 }
3286
3287 % Macros to be used within @titlepage:
3288
3289 \let\subtitlerm=\tenrm
3290 \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
3291
3292 \parseargdef\title{%
3293 \checkenv\titlepage
3294 \vbox{\titlefonts \raggedtitlesettings #1\par}%
3295 % print a rule at the page bottom also.
3296 \finishedtitlepagefalse
3297 \vskip4pt \hrule height 4pt width \hsize \vskip4pt
3298 }
3299
3300 \parseargdef\subtitle{%
3301 \checkenv\titlepage
3302 {\subtitlefont \rightline{#1}}%
3303 }
3304
3305 % @author should come last, but may come many times.
3306 % It can also be used inside @quotation.
3307 %
3308 \parseargdef\author{%
3309 \def\temp{\quotation}%
3310 \ifx\thisenv\temp
3311 \def\quotationauthor{#1}% printed in \Equotation.
3312 \else
3313 \checkenv\titlepage
3314 \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
3315 {\secfonts\rmisbold \leftline{#1}}%
3316 \fi
3317 }
3318
3319
3320 % Set up page headings and footings.
3321
3322 \let\thispage=\folio
3323
3324 \newtoks\evenheadline % headline on even pages
3325 \newtoks\oddheadline % headline on odd pages
3326 \newtoks\evenfootline % footline on even pages
3327 \newtoks\oddfootline % footline on odd pages
3328
3329 % Now make TeX use those variables
3330 \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
3331 \else \the\evenheadline \fi}}
3332 \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
3333 \else \the\evenfootline \fi}\HEADINGShook}
3334 \let\HEADINGShook=\relax
3335
3336 % Commands to set those variables.
3337 % For example, this is what @headings on does
3338 % @evenheading @thistitle|@thispage|@thischapter
3339 % @oddheading @thischapter|@thispage|@thistitle
3340 % @evenfooting @thisfile||
3341 % @oddfooting ||@thisfile
3342
3343
3344 \def\evenheading{\parsearg\evenheadingxxx}
3345 \def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
3346 \def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
3347 \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
3348
3349 \def\oddheading{\parsearg\oddheadingxxx}
3350 \def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
3351 \def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
3352 \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
3353
3354 \parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
3355
3356 \def\evenfooting{\parsearg\evenfootingxxx}
3357 \def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
3358 \def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
3359 \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
3360
3361 \def\oddfooting{\parsearg\oddfootingxxx}
3362 \def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
3363 \def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
3364 \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
3365 %
3366 % Leave some space for the footline. Hopefully ok to assume
3367 % @evenfooting will not be used by itself.
3368 \global\advance\pageheight by -12pt
3369 \global\advance\vsize by -12pt
3370 }
3371
3372 \parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
3373
3374 % @evenheadingmarks top \thischapter <- chapter at the top of a page
3375 % @evenheadingmarks bottom \thischapter <- chapter at the bottom of a page
3376 %
3377 % The same set of arguments for:
3378 %
3379 % @oddheadingmarks
3380 % @evenfootingmarks
3381 % @oddfootingmarks
3382 % @everyheadingmarks
3383 % @everyfootingmarks
3384
3385 \def\evenheadingmarks{\headingmarks{even}{heading}}
3386 \def\oddheadingmarks{\headingmarks{odd}{heading}}
3387 \def\evenfootingmarks{\headingmarks{even}{footing}}
3388 \def\oddfootingmarks{\headingmarks{odd}{footing}}
3389 \def\everyheadingmarks#1 {\headingmarks{even}{heading}{#1}
3390 \headingmarks{odd}{heading}{#1} }
3391 \def\everyfootingmarks#1 {\headingmarks{even}{footing}{#1}
3392 \headingmarks{odd}{footing}{#1} }
3393 % #1 = even/odd, #2 = heading/footing, #3 = top/bottom.
3394 \def\headingmarks#1#2#3 {%
3395 \expandafter\let\expandafter\temp \csname get#3headingmarks\endcsname
3396 \global\expandafter\let\csname get#1#2marks\endcsname \temp
3397 }
3398
3399 \everyheadingmarks bottom
3400 \everyfootingmarks bottom
3401
3402 % @headings double turns headings on for double-sided printing.
3403 % @headings single turns headings on for single-sided printing.
3404 % @headings off turns them off.
3405 % @headings on same as @headings double, retained for compatibility.
3406 % @headings after turns on double-sided headings after this page.
3407 % @headings doubleafter turns on double-sided headings after this page.
3408 % @headings singleafter turns on single-sided headings after this page.
3409 % By default, they are off at the start of a document,
3410 % and turned `on' after @end titlepage.
3411
3412 \def\headings #1 {\csname HEADINGS#1\endcsname}
3413
3414 \def\headingsoff{% non-global headings elimination
3415 \evenheadline={\hfil}\evenfootline={\hfil}%
3416 \oddheadline={\hfil}\oddfootline={\hfil}%
3417 }
3418
3419 \def\HEADINGSoff{{\globaldefs=1 \headingsoff}} % global setting
3420 \HEADINGSoff % it's the default
3421
3422 % When we turn headings on, set the page number to 1.
3423 % For double-sided printing, put current file name in lower left corner,
3424 % chapter name on inside top of right hand pages, document
3425 % title on inside top of left hand pages, and page numbers on outside top
3426 % edge of all pages.
3427 \def\HEADINGSdouble{%
3428 \global\pageno=1
3429 \global\evenfootline={\hfil}
3430 \global\oddfootline={\hfil}
3431 \global\evenheadline={\line{\folio\hfil\thistitle}}
3432 \global\oddheadline={\line{\thischapter\hfil\folio}}
3433 \global\let\contentsalignmacro = \chapoddpage
3434 }
3435 \let\contentsalignmacro = \chappager
3436
3437 % For single-sided printing, chapter title goes across top left of page,
3438 % page number on top right.
3439 \def\HEADINGSsingle{%
3440 \global\pageno=1
3441 \global\evenfootline={\hfil}
3442 \global\oddfootline={\hfil}
3443 \global\evenheadline={\line{\thischapter\hfil\folio}}
3444 \global\oddheadline={\line{\thischapter\hfil\folio}}
3445 \global\let\contentsalignmacro = \chappager
3446 }
3447 \def\HEADINGSon{\HEADINGSdouble}
3448
3449 \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
3450 \let\HEADINGSdoubleafter=\HEADINGSafter
3451 \def\HEADINGSdoublex{%
3452 \global\evenfootline={\hfil}
3453 \global\oddfootline={\hfil}
3454 \global\evenheadline={\line{\folio\hfil\thistitle}}
3455 \global\oddheadline={\line{\thischapter\hfil\folio}}
3456 \global\let\contentsalignmacro = \chapoddpage
3457 }
3458
3459 \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
3460 \def\HEADINGSsinglex{%
3461 \global\evenfootline={\hfil}
3462 \global\oddfootline={\hfil}
3463 \global\evenheadline={\line{\thischapter\hfil\folio}}
3464 \global\oddheadline={\line{\thischapter\hfil\folio}}
3465 \global\let\contentsalignmacro = \chappager
3466 }
3467
3468 % Subroutines used in generating headings
3469 % This produces Day Month Year style of output.
3470 % Only define if not already defined, in case a txi-??.tex file has set
3471 % up a different format (e.g., txi-cs.tex does this).
3472 \ifx\today\thisisundefined
3473 \def\today{%
3474 \number\day\space
3475 \ifcase\month
3476 \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
3477 \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
3478 \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
3479 \fi
3480 \space\number\year}
3481 \fi
3482
3483 % @settitle line... specifies the title of the document, for headings.
3484 % It generates no output of its own.
3485 \def\thistitle{\putwordNoTitle}
3486 \def\settitle{\parsearg{\gdef\thistitle}}
3487
3488
3489 \message{tables,}
3490 % Tables -- @table, @ftable, @vtable, @item(x).
3491
3492 % default indentation of table text
3493 \newdimen\tableindent \tableindent=.8in
3494 % default indentation of @itemize and @enumerate text
3495 \newdimen\itemindent \itemindent=.3in
3496 % margin between end of table item and start of table text.
3497 \newdimen\itemmargin \itemmargin=.1in
3498
3499 % used internally for \itemindent minus \itemmargin
3500 \newdimen\itemmax
3501
3502 % Note @table, @ftable, and @vtable define @item, @itemx, etc., with
3503 % these defs.
3504 % They also define \itemindex
3505 % to index the item name in whatever manner is desired (perhaps none).
3506
3507 \newif\ifitemxneedsnegativevskip
3508
3509 \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
3510
3511 \def\internalBitem{\smallbreak \parsearg\itemzzz}
3512 \def\internalBitemx{\itemxpar \parsearg\itemzzz}
3513
3514 \def\itemzzz #1{\begingroup %
3515 \advance\hsize by -\rightskip
3516 \advance\hsize by -\tableindent
3517 \setbox0=\hbox{\itemindicate{#1}}%
3518 \itemindex{#1}%
3519 \nobreak % This prevents a break before @itemx.
3520 %
3521 % If the item text does not fit in the space we have, put it on a line
3522 % by itself, and do not allow a page break either before or after that
3523 % line. We do not start a paragraph here because then if the next
3524 % command is, e.g., @kindex, the whatsit would get put into the
3525 % horizontal list on a line by itself, resulting in extra blank space.
3526 \ifdim \wd0>\itemmax
3527 %
3528 % Make this a paragraph so we get the \parskip glue and wrapping,
3529 % but leave it ragged-right.
3530 \begingroup
3531 \advance\leftskip by-\tableindent
3532 \advance\hsize by\tableindent
3533 \advance\rightskip by0pt plus1fil\relax
3534 \leavevmode\unhbox0\par
3535 \endgroup
3536 %
3537 % We're going to be starting a paragraph, but we don't want the
3538 % \parskip glue -- logically it's part of the @item we just started.
3539 \nobreak \vskip-\parskip
3540 %
3541 % Stop a page break at the \parskip glue coming up. However, if
3542 % what follows is an environment such as @example, there will be no
3543 % \parskip glue; then the negative vskip we just inserted would
3544 % cause the example and the item to crash together. So we use this
3545 % bizarre value of 10001 as a signal to \aboveenvbreak to insert
3546 % \parskip glue after all. Section titles are handled this way also.
3547 %
3548 \penalty 10001
3549 \endgroup
3550 \itemxneedsnegativevskipfalse
3551 \else
3552 % The item text fits into the space. Start a paragraph, so that the
3553 % following text (if any) will end up on the same line.
3554 \noindent
3555 % Do this with kerns and \unhbox so that if there is a footnote in
3556 % the item text, it can migrate to the main vertical list and
3557 % eventually be printed.
3558 \nobreak\kern-\tableindent
3559 \dimen0 = \itemmax \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
3560 \unhbox0
3561 \nobreak\kern\dimen0
3562 \endgroup
3563 \itemxneedsnegativevskiptrue
3564 \fi
3565 }
3566
3567 \def\item{\errmessage{@item while not in a list environment}}
3568 \def\itemx{\errmessage{@itemx while not in a list environment}}
3569
3570 % @table, @ftable, @vtable.
3571 \envdef\table{%
3572 \let\itemindex\gobble
3573 \tablecheck{table}%
3574 }
3575 \envdef\ftable{%
3576 \def\itemindex ##1{\doind {fn}{\code{##1}}}%
3577 \tablecheck{ftable}%
3578 }
3579 \envdef\vtable{%
3580 \def\itemindex ##1{\doind {vr}{\code{##1}}}%
3581 \tablecheck{vtable}%
3582 }
3583 \def\tablecheck#1{%
3584 \ifnum \the\catcode`\^^M=\active
3585 \endgroup
3586 \errmessage{This command won't work in this context; perhaps the problem is
3587 that we are \inenvironment\thisenv}%
3588 \def\next{\doignore{#1}}%
3589 \else
3590 \let\next\tablex
3591 \fi
3592 \next
3593 }
3594 \def\tablex#1{%
3595 \def\itemindicate{#1}%
3596 \parsearg\tabley
3597 }
3598 \def\tabley#1{%
3599 {%
3600 \makevalueexpandable
3601 \edef\temp{\noexpand\tablez #1\space\space\space}%
3602 \expandafter
3603 }\temp \endtablez
3604 }
3605 \def\tablez #1 #2 #3 #4\endtablez{%
3606 \aboveenvbreak
3607 \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
3608 \ifnum 0#2>0 \tableindent=#2\mil \fi
3609 \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
3610 \itemmax=\tableindent
3611 \advance \itemmax by -\itemmargin
3612 \advance \leftskip by \tableindent
3613 \exdentamount=\tableindent
3614 \parindent = 0pt
3615 \parskip = \smallskipamount
3616 \ifdim \parskip=0pt \parskip=2pt \fi
3617 \let\item = \internalBitem
3618 \let\itemx = \internalBitemx
3619 }
3620 \def\Etable{\endgraf\afterenvbreak}
3621 \let\Eftable\Etable
3622 \let\Evtable\Etable
3623 \let\Eitemize\Etable
3624 \let\Eenumerate\Etable
3625
3626 % This is the counter used by @enumerate, which is really @itemize
3627
3628 \newcount \itemno
3629
3630 \envdef\itemize{\parsearg\doitemize}
3631
3632 \def\doitemize#1{%
3633 \aboveenvbreak
3634 \itemmax=\itemindent
3635 \advance\itemmax by -\itemmargin
3636 \advance\leftskip by \itemindent
3637 \exdentamount=\itemindent
3638 \parindent=0pt
3639 \parskip=\smallskipamount
3640 \ifdim\parskip=0pt \parskip=2pt \fi
3641 %
3642 % Try typesetting the item mark that if the document erroneously says
3643 % something like @itemize @samp (intending @table), there's an error
3644 % right away at the @itemize. It's not the best error message in the
3645 % world, but it's better than leaving it to the @item. This means if
3646 % the user wants an empty mark, they have to say @w{} not just @w.
3647 \def\itemcontents{#1}%
3648 \setbox0 = \hbox{\itemcontents}%
3649 %
3650 % @itemize with no arg is equivalent to @itemize @bullet.
3651 \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
3652 %
3653 \let\item=\itemizeitem
3654 }
3655
3656 % Definition of @item while inside @itemize and @enumerate.
3657 %
3658 \def\itemizeitem{%
3659 \advance\itemno by 1 % for enumerations
3660 {\let\par=\endgraf \smallbreak}% reasonable place to break
3661 {%
3662 % If the document has an @itemize directly after a section title, a
3663 % \nobreak will be last on the list, and \sectionheading will have
3664 % done a \vskip-\parskip. In that case, we don't want to zero
3665 % parskip, or the item text will crash with the heading. On the
3666 % other hand, when there is normal text preceding the item (as there
3667 % usually is), we do want to zero parskip, or there would be too much
3668 % space. In that case, we won't have a \nobreak before. At least
3669 % that's the theory.
3670 \ifnum\lastpenalty<10000 \parskip=0in \fi
3671 \noindent
3672 \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
3673 %
3674 \vadjust{\penalty 1200}}% not good to break after first line of item.
3675 \flushcr
3676 }
3677
3678 % \splitoff TOKENS\endmark defines \first to be the first token in
3679 % TOKENS, and \rest to be the remainder.
3680 %
3681 \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
3682
3683 % Allow an optional argument of an uppercase letter, lowercase letter,
3684 % or number, to specify the first label in the enumerated list. No
3685 % argument is the same as `1'.
3686 %
3687 \envparseargdef\enumerate{\enumeratey #1 \endenumeratey}
3688 \def\enumeratey #1 #2\endenumeratey{%
3689 % If we were given no argument, pretend we were given `1'.
3690 \def\thearg{#1}%
3691 \ifx\thearg\empty \def\thearg{1}\fi
3692 %
3693 % Detect if the argument is a single token. If so, it might be a
3694 % letter. Otherwise, the only valid thing it can be is a number.
3695 % (We will always have one token, because of the test we just made.
3696 % This is a good thing, since \splitoff doesn't work given nothing at
3697 % all -- the first parameter is undelimited.)
3698 \expandafter\splitoff\thearg\endmark
3699 \ifx\rest\empty
3700 % Only one token in the argument. It could still be anything.
3701 % A ``lowercase letter'' is one whose \lccode is nonzero.
3702 % An ``uppercase letter'' is one whose \lccode is both nonzero, and
3703 % not equal to itself.
3704 % Otherwise, we assume it's a number.
3705 %
3706 % We need the \relax at the end of the \ifnum lines to stop TeX from
3707 % continuing to look for a <number>.
3708 %
3709 \ifnum\lccode\expandafter`\thearg=0\relax
3710 \numericenumerate % a number (we hope)
3711 \else
3712 % It's a letter.
3713 \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
3714 \lowercaseenumerate % lowercase letter
3715 \else
3716 \uppercaseenumerate % uppercase letter
3717 \fi
3718 \fi
3719 \else
3720 % Multiple tokens in the argument. We hope it's a number.
3721 \numericenumerate
3722 \fi
3723 }
3724
3725 % An @enumerate whose labels are integers. The starting integer is
3726 % given in \thearg.
3727 %
3728 \def\numericenumerate{%
3729 \itemno = \thearg
3730 \startenumeration{\the\itemno}%
3731 }
3732
3733 % The starting (lowercase) letter is in \thearg.
3734 \def\lowercaseenumerate{%
3735 \itemno = \expandafter`\thearg
3736 \startenumeration{%
3737 % Be sure we're not beyond the end of the alphabet.
3738 \ifnum\itemno=0
3739 \errmessage{No more lowercase letters in @enumerate; get a bigger
3740 alphabet}%
3741 \fi
3742 \char\lccode\itemno
3743 }%
3744 }
3745
3746 % The starting (uppercase) letter is in \thearg.
3747 \def\uppercaseenumerate{%
3748 \itemno = \expandafter`\thearg
3749 \startenumeration{%
3750 % Be sure we're not beyond the end of the alphabet.
3751 \ifnum\itemno=0
3752 \errmessage{No more uppercase letters in @enumerate; get a bigger
3753 alphabet}
3754 \fi
3755 \char\uccode\itemno
3756 }%
3757 }
3758
3759 % Call \doitemize, adding a period to the first argument and supplying the
3760 % common last two arguments. Also subtract one from the initial value in
3761 % \itemno, since @item increments \itemno.
3762 %
3763 \def\startenumeration#1{%
3764 \advance\itemno by -1
3765 \doitemize{#1.}\flushcr
3766 }
3767
3768 % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
3769 % to @enumerate.
3770 %
3771 \def\alphaenumerate{\enumerate{a}}
3772 \def\capsenumerate{\enumerate{A}}
3773 \def\Ealphaenumerate{\Eenumerate}
3774 \def\Ecapsenumerate{\Eenumerate}
3775
3776
3777 % @multitable macros
3778 % Amy Hendrickson, 8/18/94, 3/6/96
3779 %
3780 % @multitable ... @end multitable will make as many columns as desired.
3781 % Contents of each column will wrap at width given in preamble. Width
3782 % can be specified either with sample text given in a template line,
3783 % or in percent of \hsize, the current width of text on page.
3784
3785 % Table can continue over pages but will only break between lines.
3786
3787 % To make preamble:
3788 %
3789 % Either define widths of columns in terms of percent of \hsize:
3790 % @multitable @columnfractions .25 .3 .45
3791 % @item ...
3792 %
3793 % Numbers following @columnfractions are the percent of the total
3794 % current hsize to be used for each column. You may use as many
3795 % columns as desired.
3796
3797
3798 % Or use a template:
3799 % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
3800 % @item ...
3801 % using the widest term desired in each column.
3802
3803 % Each new table line starts with @item, each subsequent new column
3804 % starts with @tab. Empty columns may be produced by supplying @tab's
3805 % with nothing between them for as many times as empty columns are needed,
3806 % ie, @tab@tab@tab will produce two empty columns.
3807
3808 % @item, @tab do not need to be on their own lines, but it will not hurt
3809 % if they are.
3810
3811 % Sample multitable:
3812
3813 % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
3814 % @item first col stuff @tab second col stuff @tab third col
3815 % @item
3816 % first col stuff
3817 % @tab
3818 % second col stuff
3819 % @tab
3820 % third col
3821 % @item first col stuff @tab second col stuff
3822 % @tab Many paragraphs of text may be used in any column.
3823 %
3824 % They will wrap at the width determined by the template.
3825 % @item@tab@tab This will be in third column.
3826 % @end multitable
3827
3828 % Default dimensions may be reset by user.
3829 % @multitableparskip is vertical space between paragraphs in table.
3830 % @multitableparindent is paragraph indent in table.
3831 % @multitablecolmargin is horizontal space to be left between columns.
3832 % @multitablelinespace is space to leave between table items, baseline
3833 % to baseline.
3834 % 0pt means it depends on current normal line spacing.
3835 %
3836 \newskip\multitableparskip
3837 \newskip\multitableparindent
3838 \newdimen\multitablecolspace
3839 \newskip\multitablelinespace
3840 \multitableparskip=0pt
3841 \multitableparindent=6pt
3842 \multitablecolspace=12pt
3843 \multitablelinespace=0pt
3844
3845 % Macros used to set up halign preamble:
3846 %
3847 \let\endsetuptable\relax
3848 \def\xendsetuptable{\endsetuptable}
3849 \let\columnfractions\relax
3850 \def\xcolumnfractions{\columnfractions}
3851 \newif\ifsetpercent
3852
3853 % #1 is the @columnfraction, usually a decimal number like .5, but might
3854 % be just 1. We just use it, whatever it is.
3855 %
3856 \def\pickupwholefraction#1 {%
3857 \global\advance\colcount by 1
3858 \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
3859 \setuptable
3860 }
3861
3862 \newcount\colcount
3863 \def\setuptable#1{%
3864 \def\firstarg{#1}%
3865 \ifx\firstarg\xendsetuptable
3866 \let\go = \relax
3867 \else
3868 \ifx\firstarg\xcolumnfractions
3869 \global\setpercenttrue
3870 \else
3871 \ifsetpercent
3872 \let\go\pickupwholefraction
3873 \else
3874 \global\advance\colcount by 1
3875 \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
3876 % separator; typically that is always in the input, anyway.
3877 \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
3878 \fi
3879 \fi
3880 \ifx\go\pickupwholefraction
3881 % Put the argument back for the \pickupwholefraction call, so
3882 % we'll always have a period there to be parsed.
3883 \def\go{\pickupwholefraction#1}%
3884 \else
3885 \let\go = \setuptable
3886 \fi%
3887 \fi
3888 \go
3889 }
3890
3891 % multitable-only commands.
3892 %
3893 % @headitem starts a heading row, which we typeset in bold.
3894 % Assignments have to be global since we are inside the implicit group
3895 % of an alignment entry. \everycr resets \everytab so we don't have to
3896 % undo it ourselves.
3897 \def\headitemfont{\b}% for people to use in the template row; not changeable
3898 \def\headitem{%
3899 \checkenv\multitable
3900 \crcr
3901 \global\everytab={\bf}% can't use \headitemfont since the parsing differs
3902 \the\everytab % for the first item
3903 }%
3904 %
3905 % A \tab used to include \hskip1sp. But then the space in a template
3906 % line is not enough. That is bad. So let's go back to just `&' until
3907 % we again encounter the problem the 1sp was intended to solve.
3908 % --karl, nathan@acm.org, 20apr99.
3909 \def\tab{\checkenv\multitable &\the\everytab}%
3910
3911 % @multitable ... @end multitable definitions:
3912 %
3913 \newtoks\everytab % insert after every tab.
3914 %
3915 \envdef\multitable{%
3916 \vskip\parskip
3917 \startsavinginserts
3918 %
3919 % @item within a multitable starts a normal row.
3920 % We use \def instead of \let so that if one of the multitable entries
3921 % contains an @itemize, we don't choke on the \item (seen as \crcr aka
3922 % \endtemplate) expanding \doitemize.
3923 \def\item{\crcr}%
3924 %
3925 \tolerance=9500
3926 \hbadness=9500
3927 \setmultitablespacing
3928 \parskip=\multitableparskip
3929 \parindent=\multitableparindent
3930 \overfullrule=0pt
3931 \global\colcount=0
3932 %
3933 \everycr = {%
3934 \noalign{%
3935 \global\everytab={}%
3936 \global\colcount=0 % Reset the column counter.
3937 % Check for saved footnotes, etc.
3938 \checkinserts
3939 % Keeps underfull box messages off when table breaks over pages.
3940 %\filbreak
3941 % Maybe so, but it also creates really weird page breaks when the
3942 % table breaks over pages. Wouldn't \vfil be better? Wait until the
3943 % problem manifests itself, so it can be fixed for real --karl.
3944 }%
3945 }%
3946 %
3947 \parsearg\domultitable
3948 }
3949 \def\domultitable#1{%
3950 % To parse everything between @multitable and @item:
3951 \setuptable#1 \endsetuptable
3952 %
3953 % This preamble sets up a generic column definition, which will
3954 % be used as many times as user calls for columns.
3955 % \vtop will set a single line and will also let text wrap and
3956 % continue for many paragraphs if desired.
3957 \halign\bgroup &%
3958 \global\advance\colcount by 1
3959 \multistrut
3960 \vtop{%
3961 % Use the current \colcount to find the correct column width:
3962 \hsize=\expandafter\csname col\the\colcount\endcsname
3963 %
3964 % In order to keep entries from bumping into each other
3965 % we will add a \leftskip of \multitablecolspace to all columns after
3966 % the first one.
3967 %
3968 % If a template has been used, we will add \multitablecolspace
3969 % to the width of each template entry.
3970 %
3971 % If the user has set preamble in terms of percent of \hsize we will
3972 % use that dimension as the width of the column, and the \leftskip
3973 % will keep entries from bumping into each other. Table will start at
3974 % left margin and final column will justify at right margin.
3975 %
3976 % Make sure we don't inherit \rightskip from the outer environment.
3977 \rightskip=0pt
3978 \ifnum\colcount=1
3979 % The first column will be indented with the surrounding text.
3980 \advance\hsize by\leftskip
3981 \else
3982 \ifsetpercent \else
3983 % If user has not set preamble in terms of percent of \hsize
3984 % we will advance \hsize by \multitablecolspace.
3985 \advance\hsize by \multitablecolspace
3986 \fi
3987 % In either case we will make \leftskip=\multitablecolspace:
3988 \leftskip=\multitablecolspace
3989 \fi
3990 % Ignoring space at the beginning and end avoids an occasional spurious
3991 % blank line, when TeX decides to break the line at the space before the
3992 % box from the multistrut, so the strut ends up on a line by itself.
3993 % For example:
3994 % @multitable @columnfractions .11 .89
3995 % @item @code{#}
3996 % @tab Legal holiday which is valid in major parts of the whole country.
3997 % Is automatically provided with highlighting sequences respectively
3998 % marking characters.
3999 \noindent\ignorespaces##\unskip\multistrut
4000 }\cr
4001 }
4002 \def\Emultitable{%
4003 \crcr
4004 \egroup % end the \halign
4005 \global\setpercentfalse
4006 }
4007
4008 \def\setmultitablespacing{%
4009 \def\multistrut{\strut}% just use the standard line spacing
4010 %
4011 % Compute \multitablelinespace (if not defined by user) for use in
4012 % \multitableparskip calculation. We used define \multistrut based on
4013 % this, but (ironically) that caused the spacing to be off.
4014 % See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100.
4015 \ifdim\multitablelinespace=0pt
4016 \setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip
4017 \global\advance\multitablelinespace by-\ht0
4018 \fi
4019 % Test to see if parskip is larger than space between lines of
4020 % table. If not, do nothing.
4021 % If so, set to same dimension as multitablelinespace.
4022 \ifdim\multitableparskip>\multitablelinespace
4023 \global\multitableparskip=\multitablelinespace
4024 \global\advance\multitableparskip-7pt % to keep parskip somewhat smaller
4025 % than skip between lines in the table.
4026 \fi%
4027 \ifdim\multitableparskip=0pt
4028 \global\multitableparskip=\multitablelinespace
4029 \global\advance\multitableparskip-7pt % to keep parskip somewhat smaller
4030 % than skip between lines in the table.
4031 \fi}
4032
4033
4034 \message{conditionals,}
4035
4036 % @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
4037 % @ifnotxml always succeed. They currently do nothing; we don't
4038 % attempt to check whether the conditionals are properly nested. But we
4039 % have to remember that they are conditionals, so that @end doesn't
4040 % attempt to close an environment group.
4041 %
4042 \def\makecond#1{%
4043 \expandafter\let\csname #1\endcsname = \relax
4044 \expandafter\let\csname iscond.#1\endcsname = 1
4045 }
4046 \makecond{iftex}
4047 \makecond{ifnotdocbook}
4048 \makecond{ifnothtml}
4049 \makecond{ifnotinfo}
4050 \makecond{ifnotplaintext}
4051 \makecond{ifnotxml}
4052
4053 % Ignore @ignore, @ifhtml, @ifinfo, and the like.
4054 %
4055 \def\direntry{\doignore{direntry}}
4056 \def\documentdescription{\doignore{documentdescription}}
4057 \def\docbook{\doignore{docbook}}
4058 \def\html{\doignore{html}}
4059 \def\ifdocbook{\doignore{ifdocbook}}
4060 \def\ifhtml{\doignore{ifhtml}}
4061 \def\ifinfo{\doignore{ifinfo}}
4062 \def\ifnottex{\doignore{ifnottex}}
4063 \def\ifplaintext{\doignore{ifplaintext}}
4064 \def\ifxml{\doignore{ifxml}}
4065 \def\ignore{\doignore{ignore}}
4066 \def\menu{\doignore{menu}}
4067 \def\xml{\doignore{xml}}
4068
4069 % Ignore text until a line `@end #1', keeping track of nested conditionals.
4070 %
4071 % A count to remember the depth of nesting.
4072 \newcount\doignorecount
4073
4074 \def\doignore#1{\begingroup
4075 % Scan in ``verbatim'' mode:
4076 \obeylines
4077 \catcode`\@ = \other