1 % texinfo.tex -- TeX macros to handle Texinfo files.
3 % Load plain if necessary, i.e., if running under initex.
4 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
6 \def\texinfoversion{2004-02-11.16}
8 % Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
9 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
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 2, or (at
15 % your option) any later version.
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.
22 % You should have received a copy of the GNU General Public License
23 % along with this texinfo.tex file; see the file COPYING. If not, write
24 % to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 % Boston, MA 02111-1307, USA.
27 % As a special exception, when this file is read by TeX when processing
28 % a Texinfo source document, you may use the result without
29 % restriction. (This has been our intent since Texinfo was invented.)
31 % Please try the latest version of texinfo.tex before submitting bug
32 % reports; you can get the latest version from:
33 % http://www.gnu.org/software/texinfo/ (the Texinfo home page), or
34 % ftp://tug.org/tex/texinfo.tex
35 % (and all CTAN mirrors, see http://www.ctan.org).
36 % The texinfo.tex in any given distribution could well be out
37 % of date, so if that's what you're using, please check.
39 % Send bug reports to bug-texinfo@gnu.org. Please include including a
40 % complete document in each bug report with which we can reproduce the
41 % problem. Patches are, of course, greatly appreciated.
43 % To process a Texinfo manual with TeX, it's most reliable to use the
44 % texi2dvi shell script that comes with the distribution. For a simple
45 % manual foo.texi, however, you can get away with this:
50 % dvips foo.dvi -o # or whatever; this makes foo.ps.
51 % The extra TeX runs get the cross-reference information correct.
52 % Sometimes one run after texindex suffices, and sometimes you need more
53 % than two; texi2dvi does it as many times as necessary.
55 % It is possible to adapt texinfo.tex for other languages, to some
56 % extent. You can get the existing language-specific files from the
57 % full Texinfo distribution.
59 % The GNU Texinfo home page is http://www.gnu.org/software/texinfo.
62 \message{Loading texinfo [version \texinfoversion]:}
64 % If in a .fmt file, print the version number
65 % and turn on active characters that we couldn't do earlier because
66 % they might have appeared in the input file name.
67 \everyjob{\message{[Texinfo version \texinfoversion]}%
68 \catcode`+=\active \catcode`\_=\active}
73 % We never want plain's \outer definition of \+ in Texinfo.
74 % For @tex, we can use \tabalign.
77 % Save some plain tex macros whose names we will redefine.
79 \let\ptexbullet=\bullet
87 \let\ptexfootnote=\footnote
91 \let\ptexindent=\indent
92 \let\ptexnoindent=\noindent
93 \let\ptexinsert=\insert
102 % If this character appears in an error message or help string, it
103 % starts a new line in the output.
106 % Use TeX 3.0's \inputlineno to get the line number, for better error
107 % messages, but if we're using an old version of TeX, don't do anything.
109 \ifx\inputlineno\thisisundefined
110 \let\linenumber = \empty % Pre-3.0.
112 \def\linenumber{l.\the\inputlineno:\space}
115 % Set up fixed words for English if not already set.
116 \ifx\putwordAppendix\undefined \gdef\putwordAppendix{Appendix}\fi
117 \ifx\putwordChapter\undefined \gdef\putwordChapter{Chapter}\fi
118 \ifx\putwordfile\undefined \gdef\putwordfile{file}\fi
119 \ifx\putwordin\undefined \gdef\putwordin{in}\fi
120 \ifx\putwordIndexIsEmpty\undefined \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
121 \ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
122 \ifx\putwordInfo\undefined \gdef\putwordInfo{Info}\fi
123 \ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi
124 \ifx\putwordMethodon\undefined \gdef\putwordMethodon{Method on}\fi
125 \ifx\putwordNoTitle\undefined \gdef\putwordNoTitle{No Title}\fi
126 \ifx\putwordof\undefined \gdef\putwordof{of}\fi
127 \ifx\putwordon\undefined \gdef\putwordon{on}\fi
128 \ifx\putwordpage\undefined \gdef\putwordpage{page}\fi
129 \ifx\putwordsection\undefined \gdef\putwordsection{section}\fi
130 \ifx\putwordSection\undefined \gdef\putwordSection{Section}\fi
131 \ifx\putwordsee\undefined \gdef\putwordsee{see}\fi
132 \ifx\putwordSee\undefined \gdef\putwordSee{See}\fi
133 \ifx\putwordShortTOC\undefined \gdef\putwordShortTOC{Short Contents}\fi
134 \ifx\putwordTOC\undefined \gdef\putwordTOC{Table of Contents}\fi
136 \ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi
137 \ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi
138 \ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi
139 \ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi
140 \ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi
141 \ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi
142 \ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi
143 \ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi
144 \ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi
145 \ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi
146 \ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi
147 \ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi
149 \ifx\putwordDefmac\undefined \gdef\putwordDefmac{Macro}\fi
150 \ifx\putwordDefspec\undefined \gdef\putwordDefspec{Special Form}\fi
151 \ifx\putwordDefvar\undefined \gdef\putwordDefvar{Variable}\fi
152 \ifx\putwordDefopt\undefined \gdef\putwordDefopt{User Option}\fi
153 \ifx\putwordDeffunc\undefined \gdef\putwordDeffunc{Function}\fi
155 % In some macros, we cannot use the `\? notation---the left quote is
156 % in some cases the escape char.
157 \chardef\colonChar = `\:
158 \chardef\commaChar = `\,
159 \chardef\dotChar = `\.
160 \chardef\exclamChar= `\!
161 \chardef\questChar = `\?
162 \chardef\semiChar = `\;
163 \chardef\underChar = `\_
165 \chardef\spaceChar = `\ %
166 \chardef\spacecat = 10
167 \def\spaceisspace{\catcode\spaceChar=\spacecat}
173 % The following is used inside several \edef's.
174 \def\makecsname#1{\expandafter\noexpand\csname#1\endcsname}
177 \hyphenation{ap-pen-dix}
179 \hyphenation{mini-buf-fer mini-buf-fers}
180 \hyphenation{time-stamp}
181 \hyphenation{white-space}
183 % Margin to add to right of even pages, to left of odd pages.
184 \newdimen\bindingoffset
185 \newdimen\normaloffset
186 \newdimen\pagewidth \newdimen\pageheight
188 % For a final copy, take out the rectangles
189 % that mark overfull boxes (in case you have decided
190 % that the text looks ok even though it passes the margin).
192 \def\finalout{\overfullrule=0pt}
194 % @| inserts a changebar to the left of the current line. It should
195 % surround any changed text. This approach does *not* work if the
196 % change spans more than two lines of output. To handle that, we would
197 % have adopt a much more difficult approach (putting marks into the main
198 % vertical list for the beginning and end of each change).
201 % \vadjust can only be used in horizontal mode.
204 % Append this vertical mode material after the current line in the output.
206 % We want to insert a rule with the height and depth of the current
207 % leading; that is exactly what \strutbox is supposed to record.
210 % \vadjust-items are inserted at the left edge of the type. So
211 % the \llap here moves out into the left-hand margin.
214 % For a thicker or thinner bar, change the `1pt'.
215 \vrule height\baselineskip width1pt
217 % This is the space between the bar and the text.
223 % Sometimes it is convenient to have everything in the transcript file
224 % and nothing on the terminal. We don't just call \tracingall here,
225 % since that produces some useless output on the terminal. We also make
226 % some effort to order the tracing commands to reduce output in the log
227 % file; cf. trace.sty in LaTeX.
229 \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
233 \tracinglostchars2 % 2 gives us more in etex
238 \showboxbreadth\maxdimen \showboxdepth\maxdimen
239 \ifx\eTeXversion\undefined\else % etex gives us more logging
246 \tracingcommands3 % 3 gives us more in etex
250 % add check for \lastpenalty to plain's definitions. If the last thing
251 % we did was a \nobreak, we don't want to insert more space.
253 \def\smallbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\smallskipamount
254 \removelastskip\penalty-50\smallskip\fi\fi}
255 \def\medbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\medskipamount
256 \removelastskip\penalty-100\medskip\fi\fi}
257 \def\bigbreak{\ifnum\lastpenalty<10000\par\ifdim\lastskip<\bigskipamount
258 \removelastskip\penalty-200\bigskip\fi\fi}
260 % For @cropmarks command.
261 % Do @cropmarks to get crop marks.
264 \let\cropmarks = \cropmarkstrue
266 % Dimensions to add cropmarks at corners.
267 % Added by P. A. MacKay, 12 Nov. 1986
269 \newdimen\outerhsize \newdimen\outervsize % set by the paper size routines
270 \newdimen\cornerlong \cornerlong=1pc
271 \newdimen\cornerthick \cornerthick=.3pt
272 \newdimen\topandbottommargin \topandbottommargin=.75in
274 % Main output routine.
276 \output = {\onepageout{\pagecontents\PAGE}}
281 % \onepageout takes a vbox as an argument. Note that \pagecontents
282 % does insertions, but you have to call it yourself.
284 \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
286 \ifodd\pageno \advance\hoffset by \bindingoffset
287 \else \advance\hoffset by -\bindingoffset\fi
289 % Do this outside of the \shipout so @code etc. will be expanded in
290 % the headline as they should be, not taken literally (outputting ''code).
291 \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
292 \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
295 % Have to do this stuff outside the \shipout because we want it to
296 % take effect in \write's, yet the group defined by the \vbox ends
297 % before the \shipout runs.
299 \escapechar = `\\ % use backslash in output files.
300 \indexdummies % don't expand commands in the output.
301 \normalturnoffactive % \ in index entries must not stay \, e.g., if
302 % the page break happens to be in the middle of an example.
304 % Do this early so pdf references go to the beginning of the page.
305 \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
307 \ifcropmarks \vbox to \outervsize\bgroup
309 \vskip-\topandbottommargin
311 \line{\ewtop\hfil\ewtop}%
314 \vbox{\moveleft\cornerthick\nstop}%
316 \vbox{\moveright\cornerthick\nstop}%
319 \vskip\topandbottommargin
321 \hfil % center the page within the outer (page) hsize.
322 \ifodd\pageno\hskip\bindingoffset\fi
328 \ifdim\ht\footlinebox > 0pt
329 % Only leave this space if the footline is nonempty.
330 % (We lessened \vsize for it in \oddfootingxxx.)
331 % The \baselineskip=24pt in plain's \makefootline has no effect.
332 \vskip 2\baselineskip
337 \egroup % end of \vbox\bgroup
338 \hfil\egroup % end of (centering) \line\bgroup
339 \vskip\topandbottommargin plus1fill minus1fill
340 \boxmaxdepth = \cornerthick
343 \vbox{\moveleft\cornerthick\nsbot}%
345 \vbox{\moveright\cornerthick\nsbot}%
348 \line{\ewbot\hfil\ewbot}%
350 \egroup % \vbox from first cropmarks clause
352 }% end of \shipout\vbox
353 }% end of group with \normalturnoffactive
355 \ifnum\outputpenalty>-20000 \else\dosupereject\fi
358 \newinsert\margin \dimen\margin=\maxdimen
360 \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
362 \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
363 % marginal hacks, juha@viisa.uucp (Juha Takala)
364 \ifvoid\margin\else % marginal info is present
365 \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
366 \dimen@=\dp#1 \unvbox#1
367 \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
368 \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
371 % Here are the rules for the cropmarks. Note that they are
372 % offset so that the space between them is truly \outerhsize or \outervsize
373 % (P. A. MacKay, 12 November, 1986)
375 \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
377 {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
378 \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
380 {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
382 % Parse an argument, then pass it to #1. The argument is the rest of
383 % the input line (except we remove a trailing comment). #1 should be a
384 % macro which expects an ordinary undelimited TeX argument.
386 \def\parsearg{\parseargusing{}}
387 \def\parseargusing#1#2{%
393 \parseargline\empty% Insert the \empty token, see \finishparsearg below.
397 \gdef\parseargline#1^^M{%
398 \endgroup % End of the group started in \parsearg.
399 \argremovecomment #1\comment\ArgTerm%
403 % First remove any @comment, then any @c comment.
404 \def\argremovecomment#1\comment#2\ArgTerm{\argremovec #1\c\ArgTerm}
405 \def\argremovec#1\c#2\ArgTerm{\argcheckspaces#1\^^M\ArgTerm}
407 % Each occurence of `\^^M' or `<space>\^^M' is replaced by a single space.
409 % \argremovec might leave us with trailing space, e.g.,
410 % @end itemize @c foo
411 % This space token undergoes the same procedure and is eventually removed
412 % by \finishparsearg.
414 \def\argcheckspaces#1\^^M{\argcheckspacesX#1\^^M \^^M}
415 \def\argcheckspacesX#1 \^^M{\argcheckspacesY#1\^^M}
416 \def\argcheckspacesY#1\^^M#2\^^M#3\ArgTerm{%
419 % We cannot use \next here, as it holds the macro to run;
420 % thus we reuse \temp.
421 \let\temp\finishparsearg
423 \let\temp\argcheckspaces
425 % Put the space token in:
429 % If a _delimited_ argument is enclosed in braces, they get stripped; so
430 % to get _exactly_ the rest of the line, we had to prevent such situation.
431 % We prepended an \empty token at the very beginning and we expand it now,
432 % just before passing the control to \next.
433 % (Similarily, we have to think about #3 of \argcheckspacesY above: it is
434 % either the null string, or it ends with \^^M---thus there is no danger
435 % that a pair of braces would be stripped.
437 % But first, we have to remove the trailing space token.
439 \def\finishparsearg#1 \ArgTerm{\expandafter\next\expandafter{#1}}
441 % \parseargdef\foo{...}
442 % is roughly equivalent to
443 % \def\foo{\parsearg\Xfoo}
446 % Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
447 % favourite TeX trick. --kasal, 16nov03
450 \expandafter \doparseargdef \csname\string#1\endcsname #1%
452 \def\doparseargdef#1#2{%
457 % Several utility definitions with active space:
462 % Make each space character in the input produce a normal interword
463 % space in the output. Don't allow a line break at this space, as this
464 % is used only in environments like @example, where each line of input
465 % should produce a line of output anyway.
467 \gdef\sepspaces{\obeyspaces\let =\tie}
469 % If an index command is used in an @example environment, any spaces
470 % therein should become regular spaces in the raw index file, not the
471 % expansion of \tie (\leavevmode \penalty \@M \ ).
472 \gdef\unsepspaces{\let =\space}
476 \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
478 % Define the framework for environments in texinfo.tex. It's used like this:
483 % It's the responsibility of \envdef to insert \begingroup before the
484 % actual body; @end closes the group after calling \Efoo. \envdef also
485 % defines \thisenv, so the current environment is known; @end checks
486 % whether the environment name matches. The \checkenv macro can also be
487 % used to check whether the current environment is the one expected.
489 % Non-false conditionals (@iftex, @ifset) don't fit into this, so they
490 % are not treated as enviroments; they don't open a group. (The
491 % implementation of @end takes care not to call \endgroup in this
495 % At runtime, environments start with this:
496 \def\startenvironment#1{\begingroup\def\thisenv{#1}}
500 % ... but they get defined via ``\envdef\foo{...}'':
501 \long\def\envdef#1#2{\def#1{\startenvironment#1#2}}
502 \def\envparseargdef#1#2{\parseargdef#1{\startenvironment#1#2}}
504 % Check whether we're in the right environment:
513 % Evironment mismatch, #1 expected:
516 \errmessage{This command can appear only \inenvironment\temp,
517 not \inenvironment\thisenv}%
519 \def\inenvironment#1{%
521 out of any environment%
523 in environment \expandafter\string#1%
527 % @end foo executes the definition of \Efoo.
528 % But first, it executes a specialized version of \checkenv
531 \if 1\csname iscond.#1\endcsname
533 % The general wording of \badenverr may not be ideal, but... --kasal, 06nov03
534 \expandafter\checkenv\csname#1\endcsname
535 \csname E#1\endcsname
540 \newhelp\EMsimple{Press RETURN to continue.}
543 %% Simple single-character @ commands
546 % Kludge this until the fonts are right (grr).
549 % This is turned off because it was never documented
550 % and you can use @w{...} around a quote to suppress ligatures.
551 %% Define @` and @' to be the same as ` and '
552 %% but suppressing ligatures.
556 % Used to generate quoted braces.
557 \def\mylbrace {{\tt\char123}}
558 \def\myrbrace {{\tt\char125}}
562 % Definitions to produce \{ and \} commands for indices,
563 % and @{ and @} for the aux file.
564 \catcode`\{ = \other \catcode`\} = \other
565 \catcode`\[ = 1 \catcode`\] = 2
566 \catcode`\! = 0 \catcode`\\ = \other
569 !gdef!lbraceatcmd[@{]%
570 !gdef!rbraceatcmd[@}]%
573 % @comma{} to avoid , parsing problems.
576 % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
577 % Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
580 \def\ringaccent#1{{\accent23 #1}}
585 % Other special characters: @questiondown @exclamdown @ordf @ordm
586 % Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss.
587 \def\questiondown{?`}
589 \def\ordf{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{a}}}
590 \def\ordm{\leavevmode\raise1ex\hbox{\selectfonts\lllsize \underbar{o}}}
592 % Dotless i and dotless j, used for accents.
597 \ifx\temp\imacro \ptexi
598 \else\ifx\temp\jmacro \j
599 \else \errmessage{@dotless can be used only with i or j}%
603 % The \TeX{} logo, as in plain, but resetting the spacing so that a
604 % period following counts as ending a sentence. (Idea found in latex.)
606 \edef\TeX{\TeX \spacefactor=3000 }
608 % @LaTeX{} logo. Not quite the same results as the definition in
609 % latex.ltx, since we use a different font for the raised A; it's most
610 % convenient for us to use an explicitly smaller font, rather than using
611 % the \scriptstyle font (since we don't reset \scriptstyle and
612 % \scriptscriptstyle).
617 \vbox to \ht0{\hbox{\selectfonts\lllsize A}\vss}}%
622 % Be sure we're in horizontal mode when doing a tie, since we make space
623 % equivalent to this in @example-like environments. Otherwise, a space
624 % at the beginning of a line will start with \penalty -- and
625 % since \penalty is valid in vertical mode, we'd end up putting the
626 % penalty on the vertical list instead of in the new paragraph.
628 % Avoid using \@M directly, because that causes trouble
629 % if the definition is written into an index file.
630 \global\let\tiepenalty = \@M
631 \gdef\tie{\leavevmode\penalty\tiepenalty\ }
634 % @: forces normal size whitespace following.
635 \def\:{\spacefactor=1000 }
637 % @* forces a line break.
638 \def\*{\hfil\break\hbox{}\ignorespaces}
640 % @/ allows a line break.
643 % @. is an end-of-sentence period.
644 \def\.{.\spacefactor=3000 }
646 % @! is an end-of-sentence bang.
647 \def\!{!\spacefactor=3000 }
649 % @? is an end-of-sentence query.
650 \def\?{?\spacefactor=3000 }
652 % @w prevents a word break. Without the \leavevmode, @w at the
653 % beginning of a paragraph, when TeX is still in vertical mode, would
654 % produce a whole line of output instead of starting the paragraph.
655 \def\w#1{\leavevmode\hbox{#1}}
657 % @group ... @end group forces ... to be all on one page, by enclosing
658 % it in a TeX vbox. We use \vtop instead of \vbox to construct the box
659 % to keep its height that of a normal line. According to the rules for
660 % \topskip (p.114 of the TeXbook), the glue inserted is
661 % max (\topskip - \ht (first item), 0). If that height is large,
662 % therefore, no glue is inserted, and the space between the headline and
663 % the text is small, which looks bad.
665 % Another complication is that the group might be very large. This can
666 % cause the glue on the previous page to be unduly stretched, because it
667 % does not have much material. In this case, it's better to add an
668 % explicit \vfill so that the extra space is at the bottom. The
669 % threshold for doing this is if the group is more than \vfilllimit
670 % percent of a page (\vfilllimit can be changed inside of @tex).
676 \ifnum\catcode`\^^M=\active \else
677 \errhelp = \groupinvalidhelp
678 \errmessage{@group invalid in context where filling is enabled}%
682 \setbox\groupbox = \vtop\bgroup
683 % Do @comment since we are called inside an environment such as
684 % @example, where each end-of-line in the input causes an
685 % end-of-line in the output. We don't want the end-of-line after
686 % the `@group' to put extra space in the output. Since @group
687 % should appear on a line by itself (according to the Texinfo
688 % manual), we don't worry about eating any user text.
692 % The \vtop produces a box with normal height and large depth; thus, TeX puts
693 % \baselineskip glue before it, and (when the next line of text is done)
694 % \lineskip glue after it. Thus, space below is not quite equal to space
695 % above. But it's pretty close.
697 % To get correct interline space between the last line of the group
698 % and the first line afterwards, we have to propagate \prevdepth.
699 \endgraf % Not \par, as it may have been set to \lisppar.
700 \global\dimen1 = \prevdepth
701 \egroup % End the \vtop.
702 % \dimen0 is the vertical size of the group's box.
703 \dimen0 = \ht\groupbox \advance\dimen0 by \dp\groupbox
704 % \dimen2 is how much space is left on the page (more or less).
705 \dimen2 = \pageheight \advance\dimen2 by -\pagetotal
706 % if the group doesn't fit on the current page, and it's a big big
707 % group, force a page break.
708 \ifdim \dimen0 > \dimen2
709 \ifdim \pagetotal < \vfilllimit\pageheight
718 % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
719 % message, so this ends up printing `@group can only ...'.
721 \newhelp\groupinvalidhelp{%
722 group can only be used in environments such as @example,^^J%
723 where each line of input produces a line of output.}
725 % @need space-in-mils
726 % forces a page break if there is not space-in-mils remaining.
728 \newdimen\mil \mil=0.001in
730 % Old definition--didn't work.
731 %\parseargdef\need{\par %
732 %% This method tries to make TeX break the page naturally
733 %% if the depth of the box does not fit.
735 %\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak
740 % Ensure vertical mode, so we don't make a big box in the middle of a
744 % If the @need value is less than one line space, it's useless.
746 \dimen2 = \ht\strutbox
747 \advance\dimen2 by \dp\strutbox
748 \ifdim\dimen0 > \dimen2
750 % Do a \strut just to make the height of this box be normal, so the
751 % normal leading is inserted relative to the preceding line.
752 % And a page break here is fine.
753 \vtop to #1\mil{\strut\vfil}%
755 % TeX does not even consider page breaks if a penalty added to the
756 % main vertical list is 10000 or more. But in order to see if the
757 % empty box we just added fits on the page, we must make it consider
758 % page breaks. On the other hand, we don't want to actually break the
759 % page after the empty box. So we use a penalty of 9999.
761 % There is an extremely small chance that TeX will actually break the
762 % page at this \penalty, if there are no other feasible breakpoints in
763 % sight. (If the user is using lots of big @group commands, which
764 % almost-but-not-quite fill up a page, TeX will have a hard time doing
765 % good page breaking, for example.) However, I could not construct an
766 % example where a page broke at this \penalty; if it happens in a real
767 % document, then we can reconsider our strategy.
770 % Back up by the size of the box, whether we did a page break or not.
773 % Do not allow a page break right after this kern.
778 % @br forces paragraph break (and is undocumented).
782 % @page forces the start of a new page.
784 \def\page{\par\vfill\supereject}
787 % outputs text on separate line in roman font, starting at standard page margin
789 % This records the amount of indent in the innermost environment.
790 % That's how much \exdent should take out.
791 \newskip\exdentamount
793 % This defn is used inside fill environments such as @defun.
794 \parseargdef\exdent{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}
796 % This defn is used inside nofill environments such as @example.
797 \parseargdef\nofillexdent{{\advance \leftskip by -\exdentamount
798 \leftline{\hskip\leftskip{\rm#1}}}}
800 % @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current
801 % paragraph. For more general purposes, use the \margin insertion
802 % class. WHICH is `l' or `r'.
804 \newskip\inmarginspacing \inmarginspacing=1cm
805 \def\strutdepth{\dp\strutbox}
807 \def\doinmargin#1#2{\strut\vadjust{%
810 \vtop to \strutdepth{%
811 \baselineskip=\strutdepth
813 % if you have multiple lines of stuff to put here, you'll need to
814 % make the vbox yourself of the appropriate size.
816 \llap{\ignorespaces #2\hskip\inmarginspacing}%
818 \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
823 \def\inleftmargin{\doinmargin l}
824 \def\inrightmargin{\doinmargin r}
826 % @inmargin{TEXT [, RIGHT-TEXT]}
827 % (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right;
828 % else use TEXT for both).
830 \def\inmargin#1{\parseinmargin #1,,\finish}
831 \def\parseinmargin#1,#2,#3\finish{% not perfect, but better than nothing.
832 \setbox0 = \hbox{\ignorespaces #2}%
834 \def\lefttext{#1}% have both texts
837 \def\lefttext{#1}% have only one text
842 \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
844 \def\temp{\inleftmargin\lefttext}%
849 % @include file insert text of that file as input.
851 \def\include{\parseargusing\filenamecatcodes\includezzz}
857 \def\temp{\input #1 }%
862 \def\filenamecatcodes{%
874 \def\pushthisfilestack{%
875 \expandafter\pushthisfilestackX\popthisfilestack\StackTerm
877 \def\pushthisfilestackX{%
878 \expandafter\pushthisfilestackY\thisfile\StackTerm
880 \def\pushthisfilestackY #1\StackTerm #2\StackTerm {%
881 \gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%
884 \def\popthisfilestack{\errthisfilestackempty}
885 \def\errthisfilestackempty{\errmessage{Internal error:
886 the stack of filenames is empty.}}
891 % outputs that line, centered.
893 \parseargdef\center{%
899 \next{\hfil \ignorespaces#1\unskip \hfil}%
904 \advance\hsize by -\leftskip
905 \advance\hsize by -\rightskip
910 \def\centerV#1{\line{\kern\leftskip #1\kern\rightskip}}
912 % @sp n outputs n lines of vertical space
914 \parseargdef\sp{\vskip #1\baselineskip}
916 % @comment ...line which is ignored...
917 % @c is the same as @comment
918 % @ignore ... @end ignore is another way to write a comment
920 \def\comment{\begingroup \catcode`\^^M=\other%
921 \catcode`\@=\other \catcode`\{=\other \catcode`\}=\other%
923 {\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}}
927 % @paragraphindent NCHARS
928 % We'll use ems for NCHARS, close enough.
929 % NCHARS can also be the word `asis' or `none'.
930 % We cannot feasibly implement @paragraphindent asis, though.
932 \def\asisword{asis} % no translation, these are keywords
935 \parseargdef\paragraphindent{%
940 \defaultparindent = 0pt
942 \defaultparindent = #1em
945 \parindent = \defaultparindent
948 % @exampleindent NCHARS
949 % We'll use ems for NCHARS like @paragraphindent.
950 % It seems @exampleindent asis isn't necessary, but
951 % I preserve it to make it similar to @paragraphindent.
952 \parseargdef\exampleindent{%
959 \lispnarrowing = #1em
964 % @firstparagraphindent WORD
965 % If WORD is `none', then suppress indentation of the first paragraph
966 % after a section heading. If WORD is `insert', then do indent at such
969 % The paragraph indentation is suppressed or not by calling
970 % \suppressfirstparagraphindent, which the sectioning commands do.
971 % We switch the definition of this back and forth according to WORD.
972 % By default, we suppress indentation.
974 \def\suppressfirstparagraphindent{\dosuppressfirstparagraphindent}
975 \def\insertword{insert}
977 \parseargdef\firstparagraphindent{%
980 \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
981 \else\ifx\temp\insertword
982 \let\suppressfirstparagraphindent = \relax
985 \errmessage{Unknown @firstparagraphindent option `\temp'}%
989 % Here is how we actually suppress indentation. Redefine \everypar to
990 % \kern backwards by \parindent, and then reset itself to empty.
992 % We also make \indent itself not actually do anything until the next
995 \gdef\dosuppressfirstparagraphindent{%
997 \restorefirstparagraphindent
1001 \restorefirstparagraphindent
1004 \global\everypar = {%
1006 \restorefirstparagraphindent
1010 \gdef\restorefirstparagraphindent{%
1011 \global \let \indent = \ptexindent
1012 \global \let \noindent = \ptexnoindent
1013 \global \everypar = {}%
1017 % @asis just yields its argument. Used with @table, for example.
1021 % @math outputs its argument in math mode.
1023 % One complication: _ usually means subscripts, but it could also mean
1024 % an actual _ character, as in @math{@var{some_variable} + 1}. So make
1025 % _ active, and distinguish by seeing if the current family is \slfam,
1026 % which is what @var uses.
1028 \catcode\underChar = \active
1029 \gdef\mathunderscore{%
1030 \catcode\underChar=\active
1031 \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
1034 % Another complication: we want \\ (and @\) to output a \ character.
1035 % FYI, plain.tex uses \\ as a temporary control sequence (why?), but
1036 % this is not advertised and we don't care. Texinfo does not
1037 % otherwise define @\.
1039 % The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.
1040 \def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}
1045 \let\\ = \mathbackslash
1049 \def\finishmath#1{#1$\endgroup} % Close the group opened by \tex.
1051 % Some active characters (such as <) are spaced differently in math.
1052 % We have to reset their definitions in case the @math was an argument
1053 % to a command which sets the catcodes (such as @item or @section).
1056 \catcode`^ = \active
1057 \catcode`< = \active
1058 \catcode`> = \active
1059 \catcode`+ = \active
1068 % @bullet and @minus need the same treatment as @math, just above.
1069 \def\bullet{$\ptexbullet$}
1072 % @dots{} outputs an ellipsis using the current font.
1073 % We do .5em per period so that it has the same spacing in a typewriter
1074 % font as three actual period characters.
1079 \hskip 0pt plus 0.25fil
1081 \hskip 0pt plus 0.5fil
1085 % @enddots{} is an end-of-sentence ellipsis.
1092 % @comma{} is so commas can be inserted into text without messing up
1093 % Texinfo's parsing.
1097 % @refill is a no-op.
1100 % If working on a large document in chapters, it is convenient to
1101 % be able to disable indexing, cross-referencing, and contents, for test runs.
1102 % This is done with @novalidate (before @setfilename).
1104 \newif\iflinks \linkstrue % by default we want the aux files.
1105 \let\novalidate = \linksfalse
1107 % @setfilename is done at the beginning of every texinfo file.
1108 % So open here the files we need to have open while reading the input.
1109 % This makes it possible to make a .fmt file for texinfo.
1111 \fixbackslash % Turn off hack to swallow `\input texinfo'.
1114 % Open the new aux file. TeX will close it automatically at exit.
1115 \immediate\openout\auxfile=\jobname.aux
1116 \fi % \openindices needs to do some work in any case.
1118 \let\setfilename=\comment % Ignore extra @setfilename cmds.
1120 % If texinfo.cnf is present on the system, read it.
1121 % Useful for site-wide @afourpaper, etc.
1122 \openin 1 texinfo.cnf
1123 \ifeof 1 \else \input texinfo.cnf \fi
1126 \comment % Ignore the actual filename.
1129 % Called from \setfilename.
1141 \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
1145 % adobe `portable' document format
1149 \newcount\filenamelength
1158 \newif\ifpdfmakepagedest
1160 \ifx\pdfoutput\undefined
1162 \let\pdfmkdest = \gobble
1163 \let\pdfurl = \gobble
1164 \let\endlink = \relax
1165 \let\linkcolor = \relax
1166 \let\pdfmakeoutlines = \relax
1171 \pdfcatalog{/PageMode /UseOutlines}%
1172 \def\dopdfimage#1#2#3{%
1173 \def\imagewidth{#2}%
1174 \def\imageheight{#3}%
1175 % without \immediate, pdftex seg faults when the same image is
1176 % included twice. (Version 3.14159-pre-1.0-unofficial-20010704.)
1177 \ifnum\pdftexversion < 14
1180 \immediate\pdfximage
1182 \ifx\empty\imagewidth\else width \imagewidth \fi
1183 \ifx\empty\imageheight\else height \imageheight \fi
1184 \ifnum\pdftexversion<13
1189 \ifnum\pdftexversion < 14 \else
1190 \pdfrefximage \pdflastximage
1193 % We have to set dummies so commands such as @code in a section title
1196 \normalturnoffactive
1197 \pdfdest name{#1} xyz%
1200 \let\linkcolor = \Blue % was Cyan, but that seems light?
1201 \def\endlink{\Black\pdfendlink}
1202 % Adding outlines to PDF; macros for calculating structure of outlines
1203 % come from Petr Olsak
1204 \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
1205 \else \csname#1\endcsname \fi}
1206 \def\advancenumber#1{\tempnum=\expnumber{#1}\relax
1207 \advance\tempnum by 1
1208 \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
1210 % #1 is the section text. #2 is the pdf expression for the number
1211 % of subentries (or empty, for subsubsections). #3 is the node
1212 % text, which might be empty if this toc entry had no
1213 % corresponding node. #4 is the page number.
1215 \def\dopdfoutline#1#2#3#4{%
1216 % Generate a link to the node text if that exists; else, use the
1217 % page number. We could generate a destination for the section
1218 % text in the case where a section has no node, but it doesn't
1219 % seem worthwhile, since most documents are normally structured.
1220 \def\pdfoutlinedest{#3}%
1221 \ifx\pdfoutlinedest\empty \def\pdfoutlinedest{#4}\fi
1223 \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{#1}%
1226 \def\pdfmakeoutlines{%
1228 % Thanh's hack / proper braces in bookmarks
1229 \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace
1230 \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace
1232 % Read toc silently, to get counts of subentries for \pdfoutline.
1233 \def\numchapentry##1##2##3##4{%
1234 \def\thischapnum{##2}%
1235 \let\thissecnum\empty
1236 \let\thissubsecnum\empty
1238 \def\numsecentry##1##2##3##4{%
1239 \advancenumber{chap\thischapnum}%
1240 \def\thissecnum{##2}%
1241 \let\thissubsecnum\empty
1243 \def\numsubsecentry##1##2##3##4{%
1244 \advancenumber{sec\thissecnum}%
1245 \def\thissubsecnum{##2}%
1247 \def\numsubsubsecentry##1##2##3##4{%
1248 \advancenumber{subsec\thissubsecnum}%
1250 \let\thischapnum\empty
1251 \let\thissecnum\empty
1252 \let\thissubsecnum\empty
1254 % use \def rather than \let here because we redefine \chapentry et
1255 % al. a second time, below.
1256 \def\appentry{\numchapentry}%
1257 \def\appsecentry{\numsecentry}%
1258 \def\appsubsecentry{\numsubsecentry}%
1259 \def\appsubsubsecentry{\numsubsubsecentry}%
1260 \def\unnchapentry{\numchapentry}%
1261 \def\unnsecentry{\numsecentry}%
1262 \def\unnsubsecentry{\numsubsecentry}%
1263 \def\unnsubsubsecentry{\numsubsubsecentry}%
1266 % Read toc second time, this time actually producing the outlines.
1267 % The `-' means take the \expnumber as the absolute number of
1268 % subentries, which we calculated on our first read of the .toc above.
1270 % We use the node names as the destinations.
1271 \def\numchapentry##1##2##3##4{%
1272 \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
1273 \def\numsecentry##1##2##3##4{%
1274 \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
1275 \def\numsubsecentry##1##2##3##4{%
1276 \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
1277 \def\numsubsubsecentry##1##2##3##4{% count is always zero
1278 \dopdfoutline{##1}{}{##3}{##4}}%
1280 % PDF outlines are displayed using system fonts, instead of
1281 % document fonts. Therefore we cannot use special characters,
1282 % since the encoding is unknown. For example, the eogonek from
1283 % Latin 2 (0xea) gets translated to a | character. Info from
1284 % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
1286 % xx to do this right, we have to translate 8-bit characters to
1287 % their "best" equivalent, based on the @documentencoding. Right
1288 % now, I guess we'll just let the pdf reader have its way.
1295 \def\makelinks #1,{%
1296 \def\params{#1}\def\E{END}%
1298 \let\nextmakelinks=\relax
1300 \let\nextmakelinks=\makelinks
1301 \ifnum\lnkcount>0,\fi
1303 \startlink attr{/Border [0 0 0]}
1304 goto name{\pdfmkpgn{\the\pgn}}%
1306 \advance\lnkcount by 1%
1311 \def\picknum#1{\expandafter\pn#1}
1322 \def\ppn#1{\pgn=#1\gobble}
1323 \def\ppnn{\pgn=\first}
1324 \def\pdfmklnk#1{\lnkcount=0\makelinks #1,END,}
1325 \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
1326 \def\skipspaces#1{\def\PP{#1}\def\D{|}%
1327 \ifx\PP\D\let\nextsp\relax
1328 \else\let\nextsp\skipspaces
1329 \ifx\p\space\else\addtokens{\filename}{\PP}%
1330 \advance\filenamelength by 1
1334 \def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax}
1335 \ifnum\pdftexversion < 14
1336 \let \startlink \pdfannotlink
1338 \let \startlink \pdfstartlink
1342 \normalturnoffactive\def\@{@}%
1343 \makevalueexpandable
1345 \startlink attr{/Border [0 0 0]}%
1346 user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
1349 \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
1350 \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
1351 \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
1352 \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
1354 \expandafter\poptoks\the\toksA|ENDTOKS|
1356 \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
1357 \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
1358 \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
1360 \ifnum0=\countA\else\makelink\fi
1361 \ifx\first.\let\next=\done\else
1363 \addtokens{\toksB}{\the\toksD}
1364 \ifx\first,\addtokens{\toksB}{\space}\fi
1366 \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
1368 \def\makelink{\addtokens{\toksB}%
1369 {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
1371 \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
1372 \linkcolor #1\endlink}
1373 \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}
1374 \fi % \ifx\pdfoutput
1379 % Change the current font style to #1, remembering it in \curfontstyle.
1380 % For now, we do not accumulate font styles: @b{@i{foo}} prints foo in
1381 % italics, not bold italics.
1383 \def\setfontstyle#1{%
1384 \def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
1385 \csname ten#1\endcsname % change the current font
1388 % Select #1 fonts with the current style.
1390 \def\selectfonts#1{\csname #1fonts\endcsname \csname\curfontstyle\endcsname}
1392 \def\rm{\fam=0 \setfontstyle{rm}}
1393 \def\it{\fam=\itfam \setfontstyle{it}}
1394 \def\sl{\fam=\slfam \setfontstyle{sl}}
1395 \def\bf{\fam=\bffam \setfontstyle{bf}}
1396 \def\tt{\fam=\ttfam \setfontstyle{tt}}
1398 % Texinfo sort of supports the sans serif font style, which plain TeX does not.
1399 % So we set up a \sf.
1401 \def\sf{\fam=\sffam \setfontstyle{sf}}
1402 \let\li = \sf % Sometimes we call it \li, not \sf.
1404 % We don't need math for this font style.
1405 \def\ttsl{\setfontstyle{ttsl}}
1408 \newdimen\textleading \textleading = 13.2pt
1410 % Set the baselineskip to #1, and the lineskip and strut size
1411 % correspondingly. There is no deep meaning behind these magic numbers
1412 % used as factors; they just match (closely enough) what Knuth defined.
1414 \def\lineskipfactor{.08333}
1415 \def\strutheightpercent{.70833}
1416 \def\strutdepthpercent {.29167}
1419 \normalbaselineskip = #1\relax
1420 \normallineskip = \lineskipfactor\normalbaselineskip
1422 \setbox\strutbox =\hbox{%
1423 \vrule width0pt height\strutheightpercent\baselineskip
1424 depth \strutdepthpercent \baselineskip
1428 % Set the font macro #1 to the font named #2, adding on the
1429 % specified font prefix (normally `cm').
1430 % #3 is the font's design size, #4 is a scale factor
1431 \def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
1433 % Use cm as the default font prefix.
1434 % To specify the font prefix, you must define \fontprefix
1435 % before you read in texinfo.tex.
1436 \ifx\fontprefix\undefined
1439 % Support font families that don't use the same naming scheme as CM.
1441 \def\rmbshape{bx} %where the normal face is bold
1446 \def\ttslshape{sltt}
1456 % Text fonts (11.2pt, magstep1).
1457 \newcount\mainmagstep
1459 % not really supported.
1460 \mainmagstep=\magstep1
1461 \setfont\textrm\rmshape{12}{1000}
1462 \setfont\texttt\ttshape{12}{1000}
1464 \mainmagstep=\magstephalf
1465 \setfont\textrm\rmshape{10}{\mainmagstep}
1466 \setfont\texttt\ttshape{10}{\mainmagstep}
1468 \setfont\textbf\bfshape{10}{\mainmagstep}
1469 \setfont\textit\itshape{10}{\mainmagstep}
1470 \setfont\textsl\slshape{10}{\mainmagstep}
1471 \setfont\textsf\sfshape{10}{\mainmagstep}
1472 \setfont\textsc\scshape{10}{\mainmagstep}
1473 \setfont\textttsl\ttslshape{10}{\mainmagstep}
1474 \font\texti=cmmi10 scaled \mainmagstep
1475 \font\textsy=cmsy10 scaled \mainmagstep
1477 % A few fonts for @defun names and args.
1478 \setfont\defbf\bfshape{10}{\magstep1}
1479 \setfont\deftt\ttshape{10}{\magstep1}
1480 \setfont\defttsl\ttslshape{10}{\magstep1}
1481 \def\df{\let\tentt=\deftt \let\tenbf = \defbf \let\tenttsl=\defttsl \bf}
1483 % Fonts for indices, footnotes, small examples (9pt).
1484 \setfont\smallrm\rmshape{9}{1000}
1485 \setfont\smalltt\ttshape{9}{1000}
1486 \setfont\smallbf\bfshape{10}{900}
1487 \setfont\smallit\itshape{9}{1000}
1488 \setfont\smallsl\slshape{9}{1000}
1489 \setfont\smallsf\sfshape{9}{1000}
1490 \setfont\smallsc\scshape{10}{900}
1491 \setfont\smallttsl\ttslshape{10}{900}
1495 % Fonts for small examples (8pt).
1496 \setfont\smallerrm\rmshape{8}{1000}
1497 \setfont\smallertt\ttshape{8}{1000}
1498 \setfont\smallerbf\bfshape{10}{800}
1499 \setfont\smallerit\itshape{8}{1000}
1500 \setfont\smallersl\slshape{8}{1000}
1501 \setfont\smallersf\sfshape{8}{1000}
1502 \setfont\smallersc\scshape{10}{800}
1503 \setfont\smallerttsl\ttslshape{10}{800}
1504 \font\smalleri=cmmi8
1505 \font\smallersy=cmsy8
1507 % Fonts for title page (20.4pt):
1508 \setfont\titlerm\rmbshape{12}{\magstep3}
1509 \setfont\titleit\itbshape{10}{\magstep4}
1510 \setfont\titlesl\slbshape{10}{\magstep4}
1511 \setfont\titlett\ttbshape{12}{\magstep3}
1512 \setfont\titlettsl\ttslshape{10}{\magstep4}
1513 \setfont\titlesf\sfbshape{17}{\magstep1}
1514 \let\titlebf=\titlerm
1515 \setfont\titlesc\scbshape{10}{\magstep4}
1516 \font\titlei=cmmi12 scaled \magstep3
1517 \font\titlesy=cmsy10 scaled \magstep4
1518 \def\authorrm{\secrm}
1519 \def\authortt{\sectt}
1521 % Chapter (and unnumbered) fonts (17.28pt).
1522 \setfont\chaprm\rmbshape{12}{\magstep2}
1523 \setfont\chapit\itbshape{10}{\magstep3}
1524 \setfont\chapsl\slbshape{10}{\magstep3}
1525 \setfont\chaptt\ttbshape{12}{\magstep2}
1526 \setfont\chapttsl\ttslshape{10}{\magstep3}
1527 \setfont\chapsf\sfbshape{17}{1000}
1529 \setfont\chapsc\scbshape{10}{\magstep3}
1530 \font\chapi=cmmi12 scaled \magstep2
1531 \font\chapsy=cmsy10 scaled \magstep3
1533 % Section fonts (14.4pt).
1534 \setfont\secrm\rmbshape{12}{\magstep1}
1535 \setfont\secit\itbshape{10}{\magstep2}
1536 \setfont\secsl\slbshape{10}{\magstep2}
1537 \setfont\sectt\ttbshape{12}{\magstep1}
1538 \setfont\secttsl\ttslshape{10}{\magstep2}
1539 \setfont\secsf\sfbshape{12}{\magstep1}
1541 \setfont\secsc\scbshape{10}{\magstep2}
1542 \font\seci=cmmi12 scaled \magstep1
1543 \font\secsy=cmsy10 scaled \magstep2
1545 % Subsection fonts (13.15pt).
1546 \setfont\ssecrm\rmbshape{12}{\magstephalf}
1547 \setfont\ssecit\itbshape{10}{1315}
1548 \setfont\ssecsl\slbshape{10}{1315}
1549 \setfont\ssectt\ttbshape{12}{\magstephalf}
1550 \setfont\ssecttsl\ttslshape{10}{1315}
1551 \setfont\ssecsf\sfbshape{12}{\magstephalf}
1553 \setfont\ssecsc\scbshape{10}{1315}
1554 \font\sseci=cmmi12 scaled \magstephalf
1555 \font\ssecsy=cmsy10 scaled 1315
1557 % Reduced fonts for @acro in text (10pt).
1558 \setfont\reducedrm\rmshape{10}{1000}
1559 \setfont\reducedtt\ttshape{10}{1000}
1560 \setfont\reducedbf\bfshape{10}{1000}
1561 \setfont\reducedit\itshape{10}{1000}
1562 \setfont\reducedsl\slshape{10}{1000}
1563 \setfont\reducedsf\sfshape{10}{1000}
1564 \setfont\reducedsc\scshape{10}{1000}
1565 \setfont\reducedttsl\ttslshape{10}{1000}
1566 \font\reducedi=cmmi10
1567 \font\reducedsy=cmsy10
1569 % In order for the font changes to affect most math symbols and letters,
1570 % we have to define the \textfont of the standard families. Since
1571 % texinfo doesn't allow for producing subscripts and superscripts except
1572 % in the main text, we don't bother to reset \scriptfont and
1573 % \scriptscriptfont (which would also require loading a lot more fonts).
1575 \def\resetmathfonts{%
1576 \textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
1577 \textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
1578 \textfont\ttfam=\tentt \textfont\sffam=\tensf
1581 % The font-changing commands redefine the meanings of \tenSTYLE, instead
1582 % of just \STYLE. We do this because \STYLE needs to also set the
1583 % current \fam for math mode. Our \STYLE (e.g., \rm) commands hardwire
1584 % \tenSTYLE to set the current font.
1586 % Each font-changing command also sets the names \lsize (one size lower)
1587 % and \lllsize (three sizes lower). These relative commands are used in
1588 % the LaTeX logo and acronyms.
1590 % This all needs generalizing, badly.
1593 \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
1594 \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
1595 \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
1596 \let\tenttsl=\textttsl
1597 \def\lsize{reduced}\def\lllsize{smaller}%
1598 \resetmathfonts \setleading{\textleading}}
1600 \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
1601 \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
1602 \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
1603 \let\tenttsl=\titlettsl
1604 \def\lsize{chap}\def\lllsize{subsec}%
1605 \resetmathfonts \setleading{25pt}}
1606 \def\titlefont#1{{\titlefonts\rm #1}}
1608 \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
1609 \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
1610 \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
1611 \def\lsize{sec}\def\lllsize{text}%
1612 \resetmathfonts \setleading{19pt}}
1614 \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
1615 \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
1616 \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
1617 \let\tenttsl=\secttsl
1618 \def\lsize{subsec}\def\lllsize{reduced}%
1619 \resetmathfonts \setleading{16pt}}
1621 \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
1622 \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
1623 \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
1624 \let\tenttsl=\ssecttsl
1625 \def\lsize{text}\def\lllsize{small}%
1626 \resetmathfonts \setleading{15pt}}
1627 \let\subsubsecfonts = \subsecfonts
1629 \let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
1630 \let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
1631 \let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
1632 \let\tenttsl=\reducedttsl
1633 \def\lsize{small}\def\lllsize{smaller}%
1634 \resetmathfonts \setleading{10.5pt}}
1636 \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
1637 \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
1638 \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
1639 \let\tenttsl=\smallttsl
1640 \def\lsize{smaller}\def\lllsize{smaller}%
1641 \resetmathfonts \setleading{10.5pt}}
1643 \let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
1644 \let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
1645 \let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
1646 \let\tenttsl=\smallerttsl
1647 \def\lsize{smaller}\def\lllsize{smaller}%
1648 \resetmathfonts \setleading{9.5pt}}
1650 % Set the fonts to use with the @small... environments.
1651 \let\smallexamplefonts = \smallfonts
1653 % About \smallexamplefonts. If we use \smallfonts (9pt), @smallexample
1654 % can fit this many characters:
1655 % 8.5x11=86 smallbook=72 a4=90 a5=69
1656 % If we use \scriptfonts (8pt), then we can fit this many characters:
1657 % 8.5x11=90+ smallbook=80 a4=90+ a5=77
1658 % For me, subjectively, the few extra characters that fit aren't worth
1659 % the additional smallness of 8pt. So I'm making the default 9pt.
1661 % By the way, for comparison, here's what fits with @example (10pt):
1662 % 8.5x11=71 smallbook=60 a4=75 a5=58
1664 % I wish the USA used A4 paper.
1668 % Set up the default fonts, so we can use them for creating boxes.
1672 % Define these so they can be easily changed for other fonts.
1673 \def\angleleft{$\langle$}
1674 \def\angleright{$\rangle$}
1676 % Count depth in font-changes, for error checks
1677 \newcount\fontdepth \fontdepth=0
1679 % Fonts for short table of contents.
1680 \setfont\shortcontrm\rmshape{12}{1000}
1681 \setfont\shortcontbf\bfshape{10}{\magstep1} % no cmb12
1682 \setfont\shortcontsl\slshape{12}{1000}
1683 \setfont\shortconttt\ttshape{12}{1000}
1685 %% Add scribe-like font environments, plus @l for inline lisp (usually sans
1686 %% serif) and @ii for TeX italic
1688 % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
1689 % unless the following character is such as not to need one.
1690 \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else
1691 \ptexslash\fi\fi\fi}
1692 \def\smartslanted#1{{\ifusingtt\ttsl\sl #1}\futurelet\next\smartitalicx}
1693 \def\smartitalic#1{{\ifusingtt\ttsl\it #1}\futurelet\next\smartitalicx}
1695 % like \smartslanted except unconditionally uses \ttsl.
1696 % @var is set to this for defun arguments.
1697 \def\ttslanted#1{{\ttsl #1}\futurelet\next\smartitalicx}
1699 % like \smartslanted except unconditionally use \sl. We never want
1700 % ttsl for book titles, do we?
1701 \def\cite#1{{\sl #1}\futurelet\next\smartitalicx}
1704 \let\var=\smartslanted
1705 \let\dfn=\smartslanted
1706 \let\emph=\smartitalic
1711 % We can't just use \exhyphenpenalty, because that only has effect at
1712 % the end of a paragraph. Restore normal hyphenation at the end of the
1713 % group within which \nohyphenation is presumably called.
1715 \def\nohyphenation{\hyphenchar\font = -1 \aftergroup\restorehyphenation}
1716 \def\restorehyphenation{\hyphenchar\font = `- }
1718 % Set sfcode to normal for the chars that usually have another value.
1719 % Can't use plain's \frenchspacing because it uses the `\x notation, and
1720 % sometimes \x has an active definition that messes things up.
1723 \def\frenchspacing{%
1724 \sfcode\dotChar =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
1725 \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
1730 {\tt \rawbackslash \frenchspacing #1}%
1733 \def\samp#1{`\tclose{#1}'\null}
1734 \setfont\keyrm\rmshape{8}{1000}
1736 \def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{%
1737 \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
1738 \vbox{\hrule\kern-0.4pt
1739 \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
1741 \kern-.06em\raise0.4pt\hbox{\angleright}}}}
1742 % The old definition, with no lozenge:
1743 %\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
1744 \def\ctrl #1{{\tt \rawbackslash \hat}#1}
1746 % @file, @option are the same as @samp.
1750 % @code is a modification of @t,
1751 % which makes spaces the same size as normal in the surrounding text.
1754 % Change normal interword space to be same as for the current font.
1755 \spaceskip = \fontdimen2\font
1757 % Switch to typewriter.
1760 % But `\ ' produces the large typewriter interword space.
1761 \def\ {{\spaceskip = 0pt{} }}%
1763 % Turn off hyphenation.
1773 % We *must* turn on hyphenation at `-' and `_' in @code.
1774 % Otherwise, it is too hard to avoid overfull hboxes
1775 % in the Emacs manual, the Library manual, etc.
1777 % Unfortunately, TeX uses one parameter (\hyphenchar) to control
1778 % both hyphenation at - and hyphenation within words.
1779 % We must therefore turn them both off (\tclose does that)
1780 % and arrange explicitly to hyphenate at a dash.
1786 \global\def\code{\begingroup
1787 \catcode`\-=\active \let-\codedash
1788 \catcode`\_=\active \let_\codeunder
1794 \def\codedash{-\discretionary{}{}{}}
1796 % this is all so @math{@code{var_name}+1} can work. In math mode, _
1797 % is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
1798 % will therefore expand the active definition of _, which is us
1799 % (inside @code that is), therefore an endless loop.
1801 \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
1802 \else\normalunderscore \fi
1803 \discretionary{}{}{}}%
1806 \def\codex #1{\tclose{#1}\endgroup}
1808 % @kbd is like @code, except that if the argument is just one @key command,
1809 % then @kbd has no effect.
1811 % @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always),
1812 % `example' (@kbd uses ttsl only inside of @example and friends),
1813 % or `code' (@kbd uses normal tty font always).
1814 \parseargdef\kbdinputstyle{%
1816 \ifx\arg\worddistinct
1817 \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
1818 \else\ifx\arg\wordexample
1819 \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
1820 \else\ifx\arg\wordcode
1821 \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
1823 \errhelp = \EMsimple
1824 \errmessage{Unknown @kbdinputstyle option `\arg'}%
1827 \def\worddistinct{distinct}
1828 \def\wordexample{example}
1831 % Default is `distinct.'
1832 \kbdinputstyle distinct
1835 \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
1836 \ifx\one\xkey\ifx\threex\three \key{#2}%
1837 \else{\tclose{\kbdfont\look}}\fi
1838 \else{\tclose{\kbdfont\look}}\fi}
1840 % For @url, @env, @command quotes seem unnecessary, so use \code.
1845 % @uref (abbreviation for `urlref') takes an optional (comma-separated)
1846 % second argument specifying the text to display and an optional third
1847 % arg as text to display instead of (rather than in addition to) the url
1848 % itself. First (mandatory) arg is the url. Perhaps eventually put in
1849 % a hypertex \special here.
1851 \def\uref#1{\douref #1,,,\finish}
1852 \def\douref#1,#2,#3,#4\finish{\begingroup
1855 \setbox0 = \hbox{\ignorespaces #3}%
1857 \unhbox0 % third arg given, show only that
1859 \setbox0 = \hbox{\ignorespaces #2}%
1862 \unhbox0 % PDF: 2nd arg given, show only it
1864 \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
1867 \code{#1}% only url given, so show it
1873 % rms does not like angle brackets --karl, 17may97.
1874 % So now @email is just like @uref, unless we are pdf.
1876 %\def\email#1{\angleleft{\tt #1}\angleright}
1878 \def\email#1{\doemail#1,,\finish}
1879 \def\doemail#1,#2,#3\finish{\begingroup
1882 \setbox0 = \hbox{\ignorespaces #2}%
1883 \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
1890 % Check if we are currently using a typewriter font. Since all the
1891 % Computer Modern typewriter fonts have zero interword stretch (and
1892 % shrink), and it is reasonable to expect all typewriter fonts to have
1893 % this property, we can check that font parameter.
1895 \def\ifmonospace{\ifdim\fontdimen3\font=0pt }
1897 % Typeset a dimension, e.g., `in' or `pt'. The only reason for the
1898 % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt.
1900 \def\dmn#1{\thinspace #1}
1902 \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
1904 % @l was never documented to mean ``switch to the Lisp font'',
1905 % and it is not used as such in any manual I can find. We need it for
1906 % Polish suppressed-l. --karl, 22sep96.
1907 %\def\l#1{{\li #1}\null}
1909 % Explicit font changes: @r, @sc, undocumented @ii.
1910 \def\r#1{{\rm #1}} % roman font
1911 \def\sc#1{{\smallcaps#1}} % smallcaps font
1912 \def\ii#1{{\it #1}} % italic font
1914 \def\acronym#1{\doacronym #1,,\finish}
1915 \def\doacronym#1,#2,#3\finish{%
1916 {\selectfonts\lsize #1}%
1918 \ifx\temp\empty \else
1919 \space ({\unsepspaces \ignorespaces \temp \unskip})%
1923 % @pounds{} is a sterling sign, which is in the CM italic font.
1925 \def\pounds{{\it\$}}
1927 % @registeredsymbol - R in a circle. The font for the R should really
1928 % be smaller yet, but lllsize is the best we can do for now.
1929 % Adapted from the plain.tex definition of \copyright.
1931 \def\registeredsymbol{%
1932 $^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
1938 \message{page headings,}
1940 \newskip\titlepagetopglue \titlepagetopglue = 1.5in
1941 \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
1943 % First the title page. Must do @settitle before @titlepage.
1945 \newif\iffinishedtitlepage
1947 % Do an implicit @contents or @shortcontents after @end titlepage if the
1948 % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage.
1950 \newif\ifsetcontentsaftertitlepage
1951 \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue
1952 \newif\ifsetshortcontentsaftertitlepage
1953 \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue
1955 \parseargdef\shorttitlepage{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
1956 \endgroup\page\hbox{}\page}
1959 % Open one extra group, as we want to close it in the middle of \Etitlepage.
1961 \parindent=0pt \textfonts
1962 % Leave some space at the very top of the page.
1963 \vglue\titlepagetopglue
1964 % No rule at page bottom unless we print one at the top with @title.
1965 \finishedtitlepagetrue
1967 % Most title ``pages'' are actually two pages long, with space
1968 % at the top of the second. We don't want the ragged left on the second.
1969 \let\oldpage = \page
1971 \iffinishedtitlepage\else
1974 \let\page = \oldpage
1981 \iffinishedtitlepage\else
1984 % It is important to do the page break before ending the group,
1985 % because the headline and footline are only empty inside the group.
1986 % If we use the new definition of \page, we always get a blank page
1987 % after the title page, which we certainly don't want.
1991 % Need this before the \...aftertitlepage checks so that if they are
1992 % in effect the toc pages will come out with page numbers.
1995 % If they want short, they certainly want long too.
1996 \ifsetshortcontentsaftertitlepage
1999 \global\let\shortcontents = \relax
2000 \global\let\contents = \relax
2003 \ifsetcontentsaftertitlepage
2005 \global\let\contents = \relax
2006 \global\let\shortcontents = \relax
2010 \def\finishtitlepage{%
2011 \vskip4pt \hrule height 2pt width \hsize
2012 \vskip\titlepagebottomglue
2013 \finishedtitlepagetrue
2016 %%% Macros to be used within @titlepage:
2018 \let\subtitlerm=\tenrm
2019 \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}
2021 \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines
2024 \parseargdef\title{%
2026 \leftline{\titlefonts\rm #1}
2027 % print a rule at the page bottom also.
2028 \finishedtitlepagefalse
2029 \vskip4pt \hrule height 4pt width \hsize \vskip4pt
2032 \parseargdef\subtitle{%
2034 {\subtitlefont \rightline{#1}}%
2037 % @author should come last, but may come many times.
2038 \parseargdef\author{%
2039 \def\temp{\quotation}%
2041 This edition of the manual is dedicated to Karl Berry who should
2042 really make affiliations work.
2045 \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
2046 {\authorfont \leftline{#1}}%
2051 %%% Set up page headings and footings.
2053 \let\thispage=\folio
2055 \newtoks\evenheadline % headline on even pages
2056 \newtoks\oddheadline % headline on odd pages
2057 \newtoks\evenfootline % footline on even pages
2058 \newtoks\oddfootline % footline on odd pages
2060 % Now make TeX use those variables
2061 \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
2062 \else \the\evenheadline \fi}}
2063 \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
2064 \else \the\evenfootline \fi}\HEADINGShook}
2065 \let\HEADINGShook=\relax
2067 % Commands to set those variables.
2068 % For example, this is what @headings on does
2069 % @evenheading @thistitle|@thispage|@thischapter
2070 % @oddheading @thischapter|@thispage|@thistitle
2071 % @evenfooting @thisfile||
2072 % @oddfooting ||@thisfile
2075 \def\evenheading{\parsearg\evenheadingxxx}
2076 \def\evenheadingxxx #1{\evenheadingyyy #1\|\|\|\|\finish}
2077 \def\evenheadingyyy #1\|#2\|#3\|#4\finish{%
2078 \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
2080 \def\oddheading{\parsearg\oddheadingxxx}
2081 \def\oddheadingxxx #1{\oddheadingyyy #1\|\|\|\|\finish}
2082 \def\oddheadingyyy #1\|#2\|#3\|#4\finish{%
2083 \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
2085 \parseargdef\everyheading{\oddheadingxxx{#1}\evenheadingxxx{#1}}%
2087 \def\evenfooting{\parsearg\evenfootingxxx}
2088 \def\evenfootingxxx #1{\evenfootingyyy #1\|\|\|\|\finish}
2089 \def\evenfootingyyy #1\|#2\|#3\|#4\finish{%
2090 \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
2092 \def\oddfooting{\parsearg\oddfootingxxx}
2093 \def\oddfootingxxx #1{\oddfootingyyy #1\|\|\|\|\finish}
2094 \def\oddfootingyyy #1\|#2\|#3\|#4\finish{%
2095 \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
2097 % Leave some space for the footline. Hopefully ok to assume
2098 % @evenfooting will not be used by itself.
2099 \global\advance\pageheight by -\baselineskip
2100 \global\advance\vsize by -\baselineskip
2103 \parseargdef\everyfooting{\oddfootingxxx{#1}\evenfootingxxx{#1}}
2106 % @headings double turns headings on for double-sided printing.
2107 % @headings single turns headings on for single-sided printing.
2108 % @headings off turns them off.
2109 % @headings on same as @headings double, retained for compatibility.
2110 % @headings after turns on double-sided headings after this page.
2111 % @headings doubleafter turns on double-sided headings after this page.
2112 % @headings singleafter turns on single-sided headings after this page.
2113 % By default, they are off at the start of a document,
2114 % and turned `on' after @end titlepage.
2116 \def\headings #1 {\csname HEADINGS#1\endcsname}
2119 \global\evenheadline={\hfil} \global\evenfootline={\hfil}
2120 \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
2122 % When we turn headings on, set the page number to 1.
2123 % For double-sided printing, put current file name in lower left corner,
2124 % chapter name on inside top of right hand pages, document
2125 % title on inside top of left hand pages, and page numbers on outside top
2126 % edge of all pages.
2127 \def\HEADINGSdouble{%
2129 \global\evenfootline={\hfil}
2130 \global\oddfootline={\hfil}
2131 \global\evenheadline={\line{\folio\hfil\thistitle}}
2132 \global\oddheadline={\line{\thischapter\hfil\folio}}
2133 \global\let\contentsalignmacro = \chapoddpage
2135 \let\contentsalignmacro = \chappager
2137 % For single-sided printing, chapter title goes across top left of page,
2138 % page number on top right.
2139 \def\HEADINGSsingle{%
2141 \global\evenfootline={\hfil}
2142 \global\oddfootline={\hfil}
2143 \global\evenheadline={\line{\thischapter\hfil\folio}}
2144 \global\oddheadline={\line{\thischapter\hfil\folio}}
2145 \global\let\contentsalignmacro = \chappager
2147 \def\HEADINGSon{\HEADINGSdouble}
2149 \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
2150 \let\HEADINGSdoubleafter=\HEADINGSafter
2151 \def\HEADINGSdoublex{%
2152 \global\evenfootline={\hfil}
2153 \global\oddfootline={\hfil}
2154 \global\evenheadline={\line{\folio\hfil\thistitle}}
2155 \global\oddheadline={\line{\thischapter\hfil\folio}}
2156 \global\let\contentsalignmacro = \chapoddpage
2159 \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
2160 \def\HEADINGSsinglex{%
2161 \global\evenfootline={\hfil}
2162 \global\oddfootline={\hfil}
2163 \global\evenheadline={\line{\thischapter\hfil\folio}}
2164 \global\oddheadline={\line{\thischapter\hfil\folio}}
2165 \global\let\contentsalignmacro = \chappager
2168 % Subroutines used in generating headings
2169 % This produces Day Month Year style of output.
2170 % Only define if not already defined, in case a txi-??.tex file has set
2171 % up a different format (e.g., txi-cs.tex does this).
2172 \ifx\today\undefined
2176 \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
2177 \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
2178 \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
2183 % @settitle line... specifies the title of the document, for headings.
2184 % It generates no output of its own.
2185 \def\thistitle{\putwordNoTitle}
2186 \def\settitle{\parsearg{\gdef\thistitle}}
2190 % Tables -- @table, @ftable, @vtable, @item(x).
2192 % default indentation of table text
2193 \newdimen\tableindent \tableindent=.8in
2194 % default indentation of @itemize and @enumerate text
2195 \newdimen\itemindent \itemindent=.3in
2196 % margin between end of table item and start of table text.
2197 \newdimen\itemmargin \itemmargin=.1in
2199 % used internally for \itemindent minus \itemmargin
2202 % Note @table, @ftable, and @vtable define @item, @itemx, etc., with
2204 % They also define \itemindex
2205 % to index the item name in whatever manner is desired (perhaps none).
2207 \newif\ifitemxneedsnegativevskip
2209 \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
2211 \def\internalBitem{\smallbreak \parsearg\itemzzz}
2212 \def\internalBitemx{\itemxpar \parsearg\itemzzz}
2214 \def\itemzzz #1{\begingroup %
2215 \advance\hsize by -\rightskip
2216 \advance\hsize by -\tableindent
2217 \setbox0=\hbox{\itemindicate{#1}}%
2219 \nobreak % This prevents a break before @itemx.
2221 % If the item text does not fit in the space we have, put it on a line
2222 % by itself, and do not allow a page break either before or after that
2223 % line. We do not start a paragraph here because then if the next
2224 % command is, e.g., @kindex, the whatsit would get put into the
2225 % horizontal list on a line by itself, resulting in extra blank space.
2226 \ifdim \wd0>\itemmax
2228 % Make this a paragraph so we get the \parskip glue and wrapping,
2229 % but leave it ragged-right.
2231 \advance\leftskip by-\tableindent
2232 \advance\hsize by\tableindent
2233 \advance\rightskip by0pt plus1fil
2234 \leavevmode\unhbox0\par
2237 % We're going to be starting a paragraph, but we don't want the
2238 % \parskip glue -- logically it's part of the @item we just started.
2239 \nobreak \vskip-\parskip
2241 % Stop a page break at the \parskip glue coming up. (Unfortunately
2242 % we can't prevent a possible page break at the following
2243 % \baselineskip glue.) However, if what follows is an environment
2244 % such as @example, there will be no \parskip glue; then
2245 % the negative vskip we just would cause the example and the item to
2246 % crash together. So we use this bizarre value of 10001 as a signal
2247 % to \aboveenvbreak to insert \parskip glue after all.
2248 % (Possibly there are other commands that could be followed by
2249 % @example which need the same treatment, but not section titles; or
2250 % maybe section titles are the only special case and they should be
2254 \itemxneedsnegativevskipfalse
2256 % The item text fits into the space. Start a paragraph, so that the
2257 % following text (if any) will end up on the same line.
2259 % Do this with kerns and \unhbox so that if there is a footnote in
2260 % the item text, it can migrate to the main vertical list and
2261 % eventually be printed.
2262 \nobreak\kern-\tableindent
2263 \dimen0 = \itemmax \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
2265 \nobreak\kern\dimen0
2267 \itemxneedsnegativevskiptrue
2271 \def\item{\errmessage{@item while not in a list environment}}
2272 \def\itemx{\errmessage{@itemx while not in a list environment}}
2274 % @table, @ftable, @vtable.
2276 \let\itemindex\gobble
2280 \def\itemindex ##1{\doind {fn}{\code{##1}}}%
2284 \def\itemindex ##1{\doind {vr}{\code{##1}}}%
2288 \def\itemindicate{#1}%
2293 \makevalueexpandable
2294 \edef\temp{\noexpand\tablez #1\space\space\space}%
2298 \def\tablez #1 #2 #3 #4\endtablez{%
2300 \ifnum 0#1>0 \advance \leftskip by #1\mil \fi
2301 \ifnum 0#2>0 \tableindent=#2\mil \fi
2302 \ifnum 0#3>0 \advance \rightskip by #3\mil \fi
2303 \itemmax=\tableindent
2304 \advance \itemmax by -\itemmargin
2305 \advance \leftskip by \tableindent
2306 \exdentamount=\tableindent
2308 \parskip = \smallskipamount
2309 \ifdim \parskip=0pt \parskip=2pt \fi
2310 \let\item = \internalBitem
2311 \let\itemx = \internalBitemx
2313 \def\Etable{\endgraf\afterenvbreak}
2316 \let\Eitemize\Etable
2317 \let\Eenumerate\Etable
2319 % This is the counter used by @enumerate, which is really @itemize
2323 \envdef\itemize{\parsearg\doitemize}
2327 \itemmax=\itemindent
2328 \advance\itemmax by -\itemmargin
2329 \advance\leftskip by \itemindent
2330 \exdentamount=\itemindent
2332 \parskip=\smallskipamount
2333 \ifdim\parskip=0pt \parskip=2pt \fi
2334 \def\itemcontents{#1}%
2335 % @itemize with no arg is equivalent to @itemize @bullet.
2336 \ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
2337 \let\item=\itemizeitem
2340 % Definition of @item while inside @itemize and @enumerate.
2343 \advance\itemno by 1 % for enumerations
2344 {\let\par=\endgraf \smallbreak}% reasonable place to break
2346 % If the document has an @itemize directly after a section title, a
2347 % \nobreak will be last on the list, and \sectionheading will have
2348 % done a \vskip-\parskip. In that case, we don't want to zero
2349 % parskip, or the item text will crash with the heading. On the
2350 % other hand, when there is normal text preceding the item (as there
2351 % usually is), we do want to zero parskip, or there would be too much
2352 % space. In that case, we won't have a \nobreak before. At least
2353 % that's the theory.
2354 \ifnum\lastpenalty<10000 \parskip=0in \fi
2356 \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
2357 \vadjust{\penalty 1200}}% not good to break after first line of item.
2361 % \splitoff TOKENS\endmark defines \first to be the first token in
2362 % TOKENS, and \rest to be the remainder.
2364 \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
2366 % Allow an optional argument of an uppercase letter, lowercase letter,
2367 % or number, to specify the first label in the enumerated list. No
2368 % argument is the same as `1'.
2370 \envparseargdef\enumerate{\enumeratey #1 \endenumeratey}
2371 \def\enumeratey #1 #2\endenumeratey{%
2372 % If we were given no argument, pretend we were given `1'.
2374 \ifx\thearg\empty \def\thearg{1}\fi
2376 % Detect if the argument is a single token. If so, it might be a
2377 % letter. Otherwise, the only valid thing it can be is a number.
2378 % (We will always have one token, because of the test we just made.
2379 % This is a good thing, since \splitoff doesn't work given nothing at
2380 % all -- the first parameter is undelimited.)
2381 \expandafter\splitoff\thearg\endmark
2383 % Only one token in the argument. It could still be anything.
2384 % A ``lowercase letter'' is one whose \lccode is nonzero.
2385 % An ``uppercase letter'' is one whose \lccode is both nonzero, and
2386 % not equal to itself.
2387 % Otherwise, we assume it's a number.
2389 % We need the \relax at the end of the \ifnum lines to stop TeX from
2390 % continuing to look for a <number>.
2392 \ifnum\lccode\expandafter`\thearg=0\relax
2393 \numericenumerate % a number (we hope)
2396 \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
2397 \lowercaseenumerate % lowercase letter
2399 \uppercaseenumerate % uppercase letter
2403 % Multiple tokens in the argument. We hope it's a number.
2408 % An @enumerate whose labels are integers. The starting integer is
2411 \def\numericenumerate{%
2413 \startenumeration{\the\itemno}%
2416 % The starting (lowercase) letter is in \thearg.
2417 \def\lowercaseenumerate{%
2418 \itemno = \expandafter`\thearg
2420 % Be sure we're not beyond the end of the alphabet.
2422 \errmessage{No more lowercase letters in @enumerate; get a bigger
2429 % The starting (uppercase) letter is in \thearg.
2430 \def\uppercaseenumerate{%
2431 \itemno = \expandafter`\thearg
2433 % Be sure we're not beyond the end of the alphabet.
2435 \errmessage{No more uppercase letters in @enumerate; get a bigger
2442 % Call \doitemize, adding a period to the first argument and supplying the
2443 % common last two arguments. Also subtract one from the initial value in
2444 % \itemno, since @item increments \itemno.
2446 \def\startenumeration#1{%
2447 \advance\itemno by -1
2448 \doitemize{#1.}\flushcr
2451 % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
2454 \def\alphaenumerate{\enumerate{a}}
2455 \def\capsenumerate{\enumerate{A}}
2456 \def\Ealphaenumerate{\Eenumerate}
2457 \def\Ecapsenumerate{\Eenumerate}
2460 % @multitable macros
2461 % Amy Hendrickson, 8/18/94, 3/6/96
2463 % @multitable ... @end multitable will make as many columns as desired.
2464 % Contents of each column will wrap at width given in preamble. Width
2465 % can be specified either with sample text given in a template line,
2466 % or in percent of \hsize, the current width of text on page.
2468 % Table can continue over pages but will only break between lines.
2472 % Either define widths of columns in terms of percent of \hsize:
2473 % @multitable @columnfractions .25 .3 .45
2476 % Numbers following @columnfractions are the percent of the total
2477 % current hsize to be used for each column. You may use as many
2478 % columns as desired.
2481 % Or use a template:
2482 % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
2484 % using the widest term desired in each column.
2486 % Each new table line starts with @item, each subsequent new column
2487 % starts with @tab. Empty columns may be produced by supplying @tab's
2488 % with nothing between them for as many times as empty columns are needed,
2489 % ie, @tab@tab@tab will produce two empty columns.
2491 % @item, @tab do not need to be on their own lines, but it will not hurt
2494 % Sample multitable:
2496 % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
2497 % @item first col stuff @tab second col stuff @tab third col
2504 % @item first col stuff @tab second col stuff
2505 % @tab Many paragraphs of text may be used in any column.
2507 % They will wrap at the width determined by the template.
2508 % @item@tab@tab This will be in third column.
2511 % Default dimensions may be reset by user.
2512 % @multitableparskip is vertical space between paragraphs in table.
2513 % @multitableparindent is paragraph indent in table.
2514 % @multitablecolmargin is horizontal space to be left between columns.
2515 % @multitablelinespace is space to leave between table items, baseline
2517 % 0pt means it depends on current normal line spacing.
2519 \newskip\multitableparskip
2520 \newskip\multitableparindent
2521 \newdimen\multitablecolspace
2522 \newskip\multitablelinespace
2523 \multitableparskip=0pt
2524 \multitableparindent=6pt
2525 \multitablecolspace=12pt
2526 \multitablelinespace=0pt
2528 % Macros used to set up halign preamble:
2530 \let\endsetuptable\relax
2531 \def\xendsetuptable{\endsetuptable}
2532 \let\columnfractions\relax
2533 \def\xcolumnfractions{\columnfractions}
2536 % #1 is the @columnfraction, usually a decimal number like .5, but might
2537 % be just 1. We just use it, whatever it is.
2539 \def\pickupwholefraction#1 {%
2540 \global\advance\colcount by 1
2541 \expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
2548 \ifx\firstarg\xendsetuptable
2551 \ifx\firstarg\xcolumnfractions
2552 \global\setpercenttrue
2555 \let\go\pickupwholefraction
2557 \global\advance\colcount by 1
2558 \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
2559 % separator; typically that is always in the input, anyway.
2560 \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
2563 \ifx\go\pickupwholefraction
2564 % Put the argument back for the \pickupwholefraction call, so
2565 % we'll always have a period there to be parsed.
2566 \def\go{\pickupwholefraction#1}%
2568 \let\go = \setuptable
2574 % multitable-only commands.
2576 % @headitem starts a heading row, which we typeset in bold.
2577 % Assignments have to be global since we are inside the implicit group
2578 % of an alignment entry. Note that \everycr resets \everytab.
2579 \def\headitem{\checkenv\multitable \crcr \global\everytab={\bf}\the\everytab}%
2581 % A \tab used to include \hskip1sp. But then the space in a template
2582 % line is not enough. That is bad. So let's go back to just `&' until
2583 % we encounter the problem it was intended to solve again.
2584 % --karl, nathan@acm.org, 20apr99.
2585 \def\tab{\checkenv\multitable &\the\everytab}%
2587 % @multitable ... @end multitable definitions:
2589 \newtoks\everytab % insert after every tab.
2591 \envdef\multitable{%
2595 % @item within a multitable starts a normal row.
2600 \setmultitablespacing
2601 \parskip=\multitableparskip
2602 \parindent=\multitableparindent
2608 \global\everytab={}%
2609 \global\colcount=0 % Reset the column counter.
2610 % Check for saved footnotes, etc.
2612 % Keeps underfull box messages off when table breaks over pages.
2614 % Maybe so, but it also creates really weird page breaks when the
2615 % table breaks over pages. Wouldn't \vfil be better? Wait until the
2616 % problem manifests itself, so it can be fixed for real --karl.
2620 \parsearg\domultitable
2622 \def\domultitable#1{%
2623 % To parse everything between @multitable and @item:
2624 \setuptable#1 \endsetuptable
2626 % This preamble sets up a generic column definition, which will
2627 % be used as many times as user calls for columns.
2628 % \vtop will set a single line and will also let text wrap and
2629 % continue for many paragraphs if desired.
2631 \global\advance\colcount by 1
2634 % Use the current \colcount to find the correct column width:
2635 \hsize=\expandafter\csname col\the\colcount\endcsname
2637 % In order to keep entries from bumping into each other
2638 % we will add a \leftskip of \multitablecolspace to all columns after
2641 % If a template has been used, we will add \multitablecolspace
2642 % to the width of each template entry.
2644 % If the user has set preamble in terms of percent of \hsize we will
2645 % use that dimension as the width of the column, and the \leftskip
2646 % will keep entries from bumping into each other. Table will start at
2647 % left margin and final column will justify at right margin.
2649 % Make sure we don't inherit \rightskip from the outer environment.
2652 % The first column will be indented with the surrounding text.
2653 \advance\hsize by\leftskip
2656 % If user has not set preamble in terms of percent of \hsize
2657 % we will advance \hsize by \multitablecolspace.
2658 \advance\hsize by \multitablecolspace
2660 % In either case we will make \leftskip=\multitablecolspace:
2661 \leftskip=\multitablecolspace
2663 % Ignoring space at the beginning and end avoids an occasional spurious
2664 % blank line, when TeX decides to break the line at the space before the
2665 % box from the multistrut, so the strut ends up on a line by itself.
2667 % @multitable @columnfractions .11 .89
2669 % @tab Legal holiday which is valid in major parts of the whole country.
2670 % Is automatically provided with highlighting sequences respectively
2671 % marking characters.
2672 \noindent\ignorespaces##\unskip\multistrut
2677 \egroup % end the \halign
2678 \global\setpercentfalse
2681 \def\setmultitablespacing{% test to see if user has set \multitablelinespace.
2682 % If so, do nothing. If not, give it an appropriate dimension based on
2683 % current baselineskip.
2684 \ifdim\multitablelinespace=0pt
2685 \setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip
2686 \global\advance\multitablelinespace by-\ht0
2687 %% strut to put in table in case some entry doesn't have descenders,
2688 %% to keep lines equally spaced
2689 \let\multistrut = \strut
2691 %% FIXME: what is \box0 supposed to be?
2692 \gdef\multistrut{\vrule height\multitablelinespace depth\dp0
2694 %% Test to see if parskip is larger than space between lines of
2695 %% table. If not, do nothing.
2696 %% If so, set to same dimension as multitablelinespace.
2697 \ifdim\multitableparskip>\multitablelinespace
2698 \global\multitableparskip=\multitablelinespace
2699 \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
2700 %% than skip between lines in the table.
2702 \ifdim\multitableparskip=0pt
2703 \global\multitableparskip=\multitablelinespace
2704 \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
2705 %% than skip between lines in the table.
2709 \message{conditionals,}
2711 % @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext,
2712 % @ifnotxml always succeed. They currently do nothing; we don't
2713 % attempt to check whether the conditionals are properly nested. But we
2714 % have to remember that they are conditionals, so that @end doesn't
2715 % attempt to close an environment group.
2718 \expandafter\let\csname #1\endcsname = \relax
2719 \expandafter\let\csname iscond.#1\endcsname = 1
2722 \makecond{ifnotdocbook}
2723 \makecond{ifnothtml}
2724 \makecond{ifnotinfo}
2725 \makecond{ifnotplaintext}
2728 % Ignore @ignore, @ifhtml, @ifinfo, and the like.
2730 \def\direntry{\doignore{direntry}}
2731 \def\documentdescription{\doignore{documentdescription}}
2732 \def\docbook{\doignore{docbook}}
2733 \def\html{\doignore{html}}
2734 \def\ifdocbook{\doignore{ifdocbook}}
2735 \def\ifhtml{\doignore{ifhtml}}
2736 \def\ifinfo{\doignore{ifinfo}}
2737 \def\ifnottex{\doignore{ifnottex}}
2738 \def\ifplaintext{\doignore{ifplaintext}}
2739 \def\ifxml{\doignore{ifxml}}
2740 \def\ignore{\doignore{ignore}}
2741 \def\menu{\doignore{menu}}
2742 \def\xml{\doignore{xml}}
2744 % Ignore text until a line `@end #1', keeping track of nested conditionals.
2746 % A count to remember the depth of nesting.
2747 \newcount\doignorecount
2749 \def\doignore#1{\begingroup
2750 % Scan in ``verbatim'' mode:
2751 \catcode`\@ = \other
2752 \catcode`\{ = \other
2753 \catcode`\} = \other
2755 % Make sure that spaces turn into tokens that match what \doignoretext wants.
2758 % Count number of #1's that we've seen.
2761 % Swallow text until we reach the matching `@end #1'.
2765 { \catcode`_=11 % We want to use \_STOP_ which cannot appear in texinfo source.
2768 \gdef\dodoignore#1{%
2769 % #1 contains the string `ifinfo'.
2771 % Define a command to find the next `@end #1', which must be on a line
2773 \long\def\doignoretext##1^^M@end #1{\doignoretextyyy##1^^M@#1\_STOP_}%
2774 % And this command to find another #1 command, at the beginning of a
2775 % line. (Otherwise, we would consider a line `@c @ifset', for
2776 % example, to count as an @ifset for nesting.)
2777 \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
2779 % And now expand that command.
2785 \def\doignoreyyy#1{%
2787 \ifx\temp\empty % Nothing found.
2788 \let\next\doignoretextzzz
2789 \else % Found a nested condition, ...
2790 \advance\doignorecount by 1
2791 \let\next\doignoretextyyy % ..., look for another.
2792 % If we're here, #1 ends with ^^M\ifinfo (for example).
2794 \next #1% the token \_STOP_ is present just after this macro.
2797 % We have to swallow the remaining "\_STOP_".
2799 \def\doignoretextzzz#1{%
2800 \ifnum\doignorecount = 0 % We have just found the outermost @end.
2801 \let\next\enddoignore
2802 \else % Still inside a nested condition.
2803 \advance\doignorecount by -1
2804 \let\next\doignoretext % Look for the next @end.
2809 % Finish off ignored text.
2810 \def\enddoignore{\endgroup\ignorespaces}
2813 % @set VAR sets the variable VAR to an empty value.
2814 % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
2816 % Since we want to separate VAR from REST-OF-LINE (which might be
2817 % empty), we can't just use \parsearg; we have to insert a space of our
2818 % own to delimit the rest of the line, and then take it out again if we
2820 % We rely on the fact that \parsearg sets \catcode`\ =10.
2822 \parseargdef\set{\setyyy#1 \endsetyyy}
2823 \def\setyyy#1 #2\endsetyyy{%
2825 \makevalueexpandable
2827 \edef\next{\gdef\makecsname{SET#1}}%
2835 % Remove the trailing space \setxxx inserted.
2836 \def\setzzz#1 \endsetzzz{\next{#1}}
2838 % @clear VAR clears (i.e., unsets) the variable VAR.
2840 \parseargdef\clear{%
2842 \makevalueexpandable
2843 \global\expandafter\let\csname SET#1\endcsname=\relax
2847 % @value{foo} gets the text saved in variable foo.
2848 \def\value{\begingroup\makevalueexpandable\valuexxx}
2849 \def\valuexxx#1{\expandablevalue{#1}\endgroup}
2851 \catcode`\- = \active \catcode`\_ = \active
2853 \gdef\makevalueexpandable{%
2854 \let\value = \expandablevalue
2855 % We don't want these characters active, ...
2856 \catcode`\-=\other \catcode`\_=\other
2857 % ..., but we might end up with active ones in the argument if
2858 % we're called from @code, as @code{@value{foo-bar_}}, though.
2859 % So \let them to their normal equivalents.
2860 \let-\realdash \let_\normalunderscore
2864 % We have this subroutine so that we can handle at least some @value's
2865 % properly in indexes (we call \makevalueexpandable in \indexdummies).
2866 % The command has to be fully expandable (if the variable is set), since
2867 % the result winds up in the index file. This means that if the
2868 % variable's value contains other Texinfo commands, it's almost certain
2869 % it will fail (although perhaps we could fix that with sufficient work
2870 % to do a one-level expansion on the result, instead of complete).
2872 \def\expandablevalue#1{%
2873 \expandafter\ifx\csname SET#1\endcsname\relax
2874 {[No value for ``#1'']}%
2875 \message{Variable `#1', used in @value, is not set.}%
2877 \csname SET#1\endcsname
2881 % @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
2884 % To get special treatment of `@end ifset,' call \makeond and the redefine.
2887 \def\ifset{\parsearg{\doifset{\let\next=\ifsetfail}}}
2890 \makevalueexpandable
2892 \expandafter\ifx\csname SET#2\endcsname\relax
2893 #1% If not set, redefine \next.
2898 \def\ifsetfail{\doignore{ifset}}
2900 % @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
2901 % defined with @set, or has been undefined with @clear.
2903 % The `\else' inside the `\doifset' parameter is a trick to reuse the
2904 % above code: if the variable is not set, do nothing, if it is set,
2905 % then redefine \next to \ifclearfail.
2908 \def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}}
2909 \def\ifclearfail{\doignore{ifclear}}
2911 % @dircategory CATEGORY -- specify a category of the dir file
2912 % which this file should belong to. Ignore this in TeX.
2913 \let\dircategory=\comment
2915 % @defininfoenclose.
2916 \let\definfoenclose=\comment
2920 % Index generation facilities
2922 % Define \newwrite to be identical to plain tex's \newwrite
2923 % except not \outer, so it can be used within \newindex.
2925 \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
2927 % \newindex {foo} defines an index named foo.
2928 % It automatically defines \fooindex such that
2929 % \fooindex ...rest of line... puts an entry in the index foo.
2930 % It also defines \fooindfile to be the number of the output channel for
2931 % the file that accumulates this index. The file's extension is foo.
2932 % The name of an index should be no more than 2 characters long
2933 % for the sake of vms.
2937 \expandafter\newwrite \csname#1indfile\endcsname
2938 \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
2940 \expandafter\xdef\csname#1index\endcsname{% % Define @#1index
2941 \noexpand\doindex{#1}}
2944 % @defindex foo == \newindex{foo}
2946 \def\defindex{\parsearg\newindex}
2948 % Define @defcodeindex, like @defindex except put all entries in @code.
2950 \def\defcodeindex{\parsearg\newcodeindex}
2952 \def\newcodeindex#1{%
2954 \expandafter\newwrite \csname#1indfile\endcsname
2955 \openout \csname#1indfile\endcsname \jobname.#1
2957 \expandafter\xdef\csname#1index\endcsname{%
2958 \noexpand\docodeindex{#1}}%
2962 % @synindex foo bar makes index foo feed into index bar.
2963 % Do this instead of @defindex foo if you don't want it as a separate index.
2965 % @syncodeindex foo bar similar, but put all entries made for index foo
2968 \def\synindex#1 #2 {\dosynindex\doindex{#1}{#2}}
2969 \def\syncodeindex#1 #2 {\dosynindex\docodeindex{#1}{#2}}
2971 % #1 is \doindex or \docodeindex, #2 the index getting redefined (foo),
2972 % #3 the target index (bar).
2973 \def\dosynindex#1#2#3{%
2974 % Only do \closeout if we haven't already done it, else we'll end up
2975 % closing the target index.
2976 \expandafter \ifx\csname donesynindex#2\endcsname \undefined
2977 % The \closeout helps reduce unnecessary open files; the limit on the
2978 % Acorn RISC OS is a mere 16 files.
2979 \expandafter\closeout\csname#2indfile\endcsname
2980 \expandafter\let\csname\donesynindex#2\endcsname = 1
2982 % redefine \fooindfile:
2983 \expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
2984 \expandafter\let\csname#2indfile\endcsname=\temp
2985 % redefine \fooindex:
2986 \expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%
2989 % Define \doindex, the driver for all \fooindex macros.
2990 % Argument #1 is generated by the calling \fooindex macro,
2991 % and it is "foo", the name of the index.
2993 % \doindex just uses \parsearg; it calls \doind for the actual work.
2994 % This is because \doind is more useful to call from other macros.
2996 % There is also \dosubind {index}{topic}{subtopic}
2997 % which makes an entry in a two-level index such as the operation index.
2999 \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
3000 \def\singleindexer #1{\doind{\indexname}{#1}}
3002 % like the previous two, but they put @code around the argument.
3003 \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
3004 \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
3006 % Take care of Texinfo commands that can appear in an index entry.
3007 % Since there are some commands we want to expand, and others we don't,
3008 % we have to laboriously prevent expansion for those that we don't.
3011 \def\@{@}% change to @@ when we switch to @ as escape char in index files.
3012 \def\ {\realbackslash\space }%
3013 % Need these in case \tex is in effect and \{ is a \delimiter again.
3014 % But can't use \lbracecmd and \rbracecmd because texindex assumes
3015 % braces and backslashes are used only as delimiters.
3019 % \definedummyword defines \#1 as \realbackslash #1\space, thus
3020 % effectively preventing its expansion. This is used only for control
3021 % words, not control letters, because the \space would be incorrect
3022 % for control characters, but is needed to separate the control word
3023 % from whatever follows.
3025 % For control letters, we have \definedummyletter, which omits the
3028 % These can be used both for control words that take an argument and
3029 % those that do not. If it is followed by {arg} in the input, then
3030 % that will dutifully get written to the index (or wherever).
3032 \def\definedummyword##1{%
3033 \expandafter\def\csname ##1\endcsname{\realbackslash ##1\space}%
3035 \def\definedummyletter##1{%
3036 \expandafter\def\csname ##1\endcsname{\realbackslash ##1}%
3039 % Do the redefinitions.
3043 % For the aux file, @ is the escape character. So we want to redefine
3044 % everything using @ instead of \realbackslash. When everything uses
3045 % @, this will be simpler.
3050 \let\{ = \lbraceatcmd
3051 \let\} = \rbraceatcmd
3053 % (See comments in \indexdummies.)
3054 \def\definedummyword##1{%
3055 \expandafter\def\csname ##1\endcsname{@##1\space}%
3057 \def\definedummyletter##1{%
3058 \expandafter\def\csname ##1\endcsname{@##1}%
3061 % Do the redefinitions.
3065 % Called from \indexdummies and \atdummies. \definedummyword and
3066 % \definedummyletter must be defined first.
3068 \def\commondummies{%
3070 \normalturnoffactive
3072 \commondummiesnofonts
3074 \definedummyletter{_}%
3076 % Non-English letters.
3077 \definedummyword{AA}%
3078 \definedummyword{AE}%
3079 \definedummyword{L}%
3080 \definedummyword{OE}%
3081 \definedummyword{O}%
3082 \definedummyword{aa}%
3083 \definedummyword{ae}%
3084 \definedummyword{l}%
3085 \definedummyword{oe}%
3086 \definedummyword{o}%
3087 \definedummyword{ss}%
3088 \definedummyword{exclamdown}%
3089 \definedummyword{questiondown}%
3090 \definedummyword{ordf}%
3091 \definedummyword{ordm}%
3093 % Although these internal commands shouldn't show up, sometimes they do.
3094 \definedummyword{bf}%
3095 \definedummyword{gtr}%
3096 \definedummyword{hat}%
3097 \definedummyword{less}%
3098 \definedummyword{sf}%
3099 \definedummyword{sl}%
3100 \definedummyword{tclose}%
3101 \definedummyword{tt}%
3103 \definedummyword{LaTeX}%
3104 \definedummyword{TeX}%
3106 % Assorted special characters.
3107 \definedummyword{bullet}%
3108 \definedummyword{copyright}%
3109 \definedummyword{registeredsymbol}%
3110 \definedummyword{dots}%
3111 \definedummyword{enddots}%
3112 \definedummyword{equiv}%
3113 \definedummyword{error}%
3114 \definedummyword{expansion}%
3115 \definedummyword{minus}%
3116 \definedummyword{pounds}%
3117 \definedummyword{point}%
3118 \definedummyword{print}%
3119 \definedummyword{result}%
3121 % Handle some cases of @value -- where it does not contain any
3122 % (non-fully-expandable) commands.
3123 \makevalueexpandable
3125 % Normal spaces, not active ones.
3128 % No macro expansion.
3132 % \commondummiesnofonts: common to \commondummies and \indexnofonts.
3134 % Better have this without active chars.
3137 \gdef\commondummiesnofonts{%
3138 % Control letters and accents.
3139 \definedummyletter{!}%
3140 \definedummyletter{"}%
3141 \definedummyletter{'}%
3142 \definedummyletter{*}%
3143 \definedummyletter{,}%
3144 \definedummyletter{.}%
3145 \definedummyletter{/}%
3146 \definedummyletter{:}%
3147 \definedummyletter{=}%
3148 \definedummyletter{?}%
3149 \definedummyletter{^}%
3150 \definedummyletter{`}%
3151 \definedummyletter{~}%
3152 \definedummyword{u}%
3153 \definedummyword{v}%
3154 \definedummyword{H}%
3155 \definedummyword{dotaccent}%
3156 \definedummyword{ringaccent}%
3157 \definedummyword{tieaccent}%
3158 \definedummyword{ubaraccent}%
3159 \definedummyword{udotaccent}%
3160 \definedummyword{dotless}%
3162 % Texinfo font commands.
3163 \definedummyword{b}%
3164 \definedummyword{i}%
3165 \definedummyword{r}%
3166 \definedummyword{sc}%
3167 \definedummyword{t}%
3169 % Commands that take arguments.
3170 \definedummyword{acronym}%
3171 \definedummyword{cite}%
3172 \definedummyword{code}%
3173 \definedummyword{command}%
3174 \definedummyword{dfn}%
3175 \definedummyword{emph}%
3176 \definedummyword{env}%
3177 \definedummyword{file}%
3178 \definedummyword{kbd}%
3179 \definedummyword{key}%
3180 \definedummyword{math}%
3181 \definedummyword{option}%
3182 \definedummyword{samp}%
3183 \definedummyword{strong}%
3184 \definedummyword{tie}%
3185 \definedummyword{uref}%
3186 \definedummyword{url}%
3187 \definedummyword{var}%
3188 \definedummyword{verb}%
3189 \definedummyword{w}%
3193 % \indexnofonts is used when outputting the strings to sort the index
3194 % by, and when constructing control sequence names. It eliminates all
3195 % control sequences and just writes whatever the best ASCII sort string
3196 % would be for a given command (usually its argument).
3199 \def\definedummyword##1{%
3200 \expandafter\let\csname ##1\endcsname\asis
3202 \let\definedummyletter=\definedummyword
3204 \commondummiesnofonts
3206 % Don't no-op \tt, since it isn't a user-level command
3207 % and is used in the definitions of the active chars like <, >, |, etc.
3208 % Likewise with the other plain tex font commands.
3213 % how to handle braces?
3214 \def\_{\normalunderscore}%
3216 % Non-English letters.
3229 \def\questiondown{?}%
3236 % Assorted special characters.
3237 % (The following {} will end up in the sort string, but that's ok.)
3238 \def\bullet{bullet}%
3239 \def\copyright{copyright}%
3240 \def\registeredsymbol{R}%
3245 \def\expansion{==>}%
3247 \def\pounds{pounds}%
3253 \let\indexbackslash=0 %overridden during \printindex.
3254 \let\SETmarginindex=\relax % put index entries in margin (undocumented)?
3256 % Most index entries go through here, but \dosubind is the general case.
3257 % #1 is the index name, #2 is the entry text.
3258 \def\doind#1#2{\dosubind{#1}{#2}{}}
3260 % Workhorse for all \fooindexes.
3261 % #1 is name of index, #2 is stuff to put there, #3 is subentry --
3262 % empty if called from \doind, as we usually are (the main exception
3263 % is with most defuns, which call us directly).
3265 \def\dosubind#1#2#3{%
3268 % Store the main index entry text (including the third arg).
3270 % If third arg is present, precede it with a space.
3272 \ifx\thirdarg\empty \else
3273 \toks0 = \expandafter{\the\toks0 \space #3}%
3276 \edef\writeto{\csname#1indfile\endcsname}%
3287 % Write the entry in \toks0 to the index file:
3289 \def\dosubindwrite{%
3290 % Put the index entry in the margin if desired.
3291 \ifx\SETmarginindex\relax\else
3292 \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
3295 % Remember, we are within a group.
3296 \indexdummies % Must do this here, since \bf, etc expand at this stage
3298 \def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now
3299 % so it will be output as is; and it will print as backslash.
3301 % Process the index entry with all font commands turned off, to
3302 % get the string to sort by.
3304 \edef\temp{\the\toks0}% need full expansion
3305 \xdef\indexsorttmp{\temp}%
3308 % Set up the complete index entry, with both the sort key and
3309 % the original text, including any font commands. We write
3310 % three arguments to \entry to the .?? file (four in the
3311 % subentry case), texindex reduces to two when writing the .??s
3315 \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
3320 % Take care of unwanted page breaks:
3322 % If a skip is the last thing on the list now, preserve it
3323 % by backing up by \lastskip, doing the \write, then inserting
3324 % the skip again. Otherwise, the whatsit generated by the
3325 % \write will make \lastskip zero. The result is that sequences
3330 % will have extra space inserted, because the \medbreak in the
3331 % start of the @defun won't see the skip inserted by the @end of
3332 % the previous defun.
3334 % But don't do any of this if we're not in vertical mode. We
3335 % don't want to do a \vskip and prematurely end a paragraph.
3337 % Avoid page breaks due to these extra skips, too.
3339 % But wait, there is a catch there:
3340 % We'll have to check whether \lastskip is zero skip. \ifdim is not
3341 % sufficient for this purpose, as it ignores stretch and shrink parts
3342 % of the skip. The only way seems to be to check the textual
3343 % representation of the skip.
3345 % The following is almost like \def\zeroskipmacro{0.0pt} except that
3346 % the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
3348 \edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
3352 \def\dosubindsanitize{%
3353 % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
3355 \edef\lastskipmacro{\the\lastskip}%
3356 \count255 = \lastpenalty
3358 % If \lastskip is nonzero, that means the last item was a
3359 % skip. And since a skip is discardable, that means this
3360 % -\skip0 glue we're inserting is preceded by a
3361 % non-discardable item, therefore it is not a potential
3362 % breakpoint, therefore no \nobreak needed.
3363 \ifx\lastskipmacro\zeroskipmacro
3370 \ifx\lastskipmacro\zeroskipmacro
3371 % if \lastskip was zero, perhaps the last item was a
3372 % penalty, and perhaps it was >=10000, e.g., a \nobreak.
3373 % In that case, we want to re-insert the penalty; since we
3374 % just inserted a non-discardable item, any following glue
3375 % (such as a \parskip) would be a breakpoint. For example:
3376 % @deffn deffn-whatever
3377 % @vindex index-whatever
3379 % would allow a break between the index-whatever whatsit
3380 % and the "Description." paragraph.
3381 \ifnum\count255>9999 \nobreak \fi
3383 % On the other hand, if we had a nonzero \lastskip,
3384 % this make-up glue would be preceded by a non-discardable item
3385 % (the whatsit from the \write), so we must insert a \nobreak.
3386 \nobreak\vskip\skip0
3390 % The index entry written in the file actually looks like
3391 % \entry {sortstring}{page}{topic}
3393 % \entry {sortstring}{page}{topic}{subtopic}
3394 % The texindex program reads in these files and writes files
3395 % containing these kinds of lines:
3397 % before the first topic whose initial is c
3398 % \entry {topic}{pagelist}
3399 % for a topic that is used without subtopics
3401 % for the beginning of a topic that is used with subtopics
3402 % \secondary {subtopic}{pagelist}
3403 % for each subtopic.
3405 % Define the user-accessible indexing commands
3406 % @findex, @vindex, @kindex, @cindex.
3408 \def\findex {\fnindex}
3409 \def\kindex {\kyindex}
3410 \def\cindex {\cpindex}
3411 \def\vindex {\vrindex}
3412 \def\tindex {\tpindex}
3413 \def\pindex {\pgindex}
3415 \def\cindexsub {\begingroup\obeylines\cindexsub}
3417 \gdef\cindexsub "#1" #2^^M{\endgroup %
3418 \dosubind{cp}{#2}{#1}}}
3420 % Define the macros used in formatting output of the sorted index material.
3422 % @printindex causes a particular index (the ??s file) to get printed.
3423 % It does not print any chapter heading (usually an @unnumbered).
3425 \parseargdef\printindex{\begingroup
3426 \dobreak \chapheadingskip{10000}%
3430 \everypar = {}% don't want the \kern\-parindent from indentation suppression.
3432 % See if the index file exists and is nonempty.
3433 % Change catcode of @ here so that if the index file contains
3435 % as its first line, TeX doesn't complain about mismatched braces
3436 % (because it thinks @} is a control sequence).
3438 \openin 1 \jobname.#1s
3440 % \enddoublecolumns gets confused if there is no text in the index,
3441 % and it loses the chapter title and the aux file entries for the
3442 % index. The easiest way to prevent this problem is to make sure
3443 % there is some text.
3444 \putwordIndexNonexistent
3447 % If the index file exists but is empty, then \openin leaves \ifeof
3448 % false. We have to make TeX try to read something from the file, so
3449 % it can discover if there is anything in it.
3452 \putwordIndexIsEmpty
3454 % Index files are almost Texinfo source, but we use \ as the escape
3455 % character. It would be better to use @, but that's too big a change
3456 % to make right now.
3457 \def\indexbackslash{\backslashcurfont}%
3468 % These macros are used by the sorted index file itself.
3469 % Change them to control the appearance of the index.
3472 % Some minor font changes for the special characters.
3473 \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
3475 % Remove any glue we may have, we'll be inserting our own.
3478 % We like breaks before the index initials, so insert a bonus.
3481 % Typeset the initial. Making this add up to a whole number of
3482 % baselineskips increases the chance of the dots lining up from column
3483 % to column. It still won't often be perfect, because of the stretch
3484 % we need before each entry, but it's better.
3486 % No shrink because it confuses \balancecolumns.
3487 \vskip 1.67\baselineskip plus .5\baselineskip
3488 \leftline{\secbf #1}%
3489 \vskip .33\baselineskip plus .1\baselineskip
3491 % Do our best not to break after the initial.
3495 % \entry typesets a paragraph consisting of the text (#1), dot leaders, and
3496 % then page number (#2) flushed to the right margin. It is used for index
3497 % and table of contents entries. The paragraph is indented by \leftskip.
3499 % A straightforward implementation would start like this:
3500 % \def\entry#1#2{...
3501 % But this frozes the catcodes in the argument, and can cause problems to
3502 % @code, which sets - active. This problem was fixed by a kludge---
3503 % ``-'' was active throughout whole index, but this isn't really right.
3505 % The right solution is to prevent \entry from swallowing the whole text.
3510 % Start a new paragraph if necessary, so our assignments below can't
3511 % affect previous text.
3514 % Do not fill out the last line with white space.
3517 % No extra space above this paragraph.
3520 % Do not prefer a separate line ending with a hyphen to fewer lines.
3521 \finalhyphendemerits = 0
3523 % \hangindent is only relevant when the entry text and page number
3524 % don't both fit on one line. In that case, bob suggests starting the
3525 % dots pretty far over on the line. Unfortunately, a large
3526 % indentation looks wrong when the entry text itself is broken across
3527 % lines. So we use a small indentation and put up with long leaders.
3529 % \hangafter is reset to 1 (which is the value we want) at the start
3530 % of each paragraph, so we need not do anything with that.
3533 % When the entry text needs to be broken, just fill out the first line
3535 \rightskip = 0pt plus1fil
3537 % A bit of stretch before each entry for the benefit of balancing
3541 % Swallow the left brace of the text (first parameter):
3542 \afterassignment\doentry
3546 \bgroup % Instead of the swallowed brace.
3548 \aftergroup\finishentry
3549 % And now comes the text of the entry.
3551 \def\finishentry#1{%
3552 % #1 is the page number.
3554 % The following is kludged to not output a line of dots in the index if
3555 % there are no page numbers. The next person who breaks this will be
3556 % cursed by a Unix daemon.
3559 \edef\tempc{\tempa}%
3560 \edef\tempd{\tempb}%
3565 % If we must, put the page number on a line of its own, and fill out
3566 % this line with blank space. (The \hfil is overwhelmed with the
3567 % fill leaders glue in \indexdotfill if the page number does fit.)
3569 \null\nobreak\indexdotfill % Have leaders before the page number.
3571 % The `\ ' here is removed by the implicit \unskip that TeX does as
3572 % part of (the primitive) \par. Without it, a spurious underfull
3575 \pdfgettoks#1.\ \the\toksA
3584 % Like \dotfill except takes at least 1 em.
3585 \def\indexdotfill{\cleaders
3586 \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
3588 \def\primary #1{\line{#1\hfil}}
3590 \newskip\secondaryindent \secondaryindent=0.5cm
3591 \def\secondary#1#2{{%
3596 \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
3598 \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
3605 % Define two-column mode, which we use to typeset indexes.
3606 % Adapted from the TeXbook, page 416, which is to say,
3607 % the manmac.tex format used to print the TeXbook itself.
3611 \newdimen\doublecolumnhsize
3613 \def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
3614 % Grab any single-column material above us.
3617 % Here is a possibility not foreseen in manmac: if we accumulate a
3618 % whole lot of material, we might end up calling this \output
3619 % routine twice in a row (see the doublecol-lose test, which is
3620 % essentially a couple of indexes with @setchapternewpage off). In
3621 % that case we just ship out what is in \partialpage with the normal
3622 % output routine. Generally, \partialpage will be empty when this
3623 % runs and this will be a no-op. See the indexspread.tex test case.
3624 \ifvoid\partialpage \else
3625 \onepageout{\pagecontents\partialpage}%
3628 \global\setbox\partialpage = \vbox{%
3629 % Unvbox the main output page.
3631 \kern-\topskip \kern\baselineskip
3634 \eject % run that output routine to set \partialpage
3636 % Use the double-column output routine for subsequent pages.
3637 \output = {\doublecolumnout}%
3639 % Change the page size parameters. We could do this once outside this
3640 % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
3641 % format, but then we repeat the same computation. Repeating a couple
3642 % of assignments once per index is clearly meaningless for the
3643 % execution time, so we may as well do it in one place.
3645 % First we halve the line length, less a little for the gutter between
3646 % the columns. We compute the gutter based on the line length, so it
3647 % changes automatically with the paper format. The magic constant
3648 % below is chosen so that the gutter has the same value (well, +-<1pt)
3649 % as it did when we hard-coded it.
3651 % We put the result in a separate register, \doublecolumhsize, so we
3652 % can restore it in \pagesofar, after \hsize itself has (potentially)
3655 \doublecolumnhsize = \hsize
3656 \advance\doublecolumnhsize by -.04154\hsize
3657 \divide\doublecolumnhsize by 2
3658 \hsize = \doublecolumnhsize
3660 % Double the \vsize as well. (We don't need a separate register here,
3661 % since nobody clobbers \vsize.)
3665 % The double-column output routine for all double-column pages except
3668 \def\doublecolumnout{%
3669 \splittopskip=\topskip \splitmaxdepth=\maxdepth
3670 % Get the available space for the double columns -- the normal
3671 % (undoubled) page height minus any material left over from the
3675 \advance\dimen@ by -\ht\partialpage
3677 % box0 will be the left-hand column, box2 the right.
3678 \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
3679 \onepageout\pagesofar
3681 \penalty\outputpenalty
3684 % Re-output the contents of the output page -- any previous material,
3685 % followed by the two boxes we just split, in box0 and box2.
3689 \hsize = \doublecolumnhsize
3690 \wd0=\hsize \wd2=\hsize
3691 \hbox to\pagewidth{\box0\hfil\box2}%
3694 % All done with double columns.
3695 \def\enddoublecolumns{%
3697 % Split the last of the double-column material. Leave it on the
3698 % current page, no automatic page break.
3701 % If we end up splitting too much material for the current page,
3702 % though, there will be another page break right after this \output
3703 % invocation ends. Having called \balancecolumns once, we do not
3704 % want to call it again. Therefore, reset \output to its normal
3705 % definition right away. (We hope \balancecolumns will never be
3706 % called on to balance too much material, but if it is, this makes
3707 % the output somewhat more palatable.)
3708 \global\output = {\onepageout{\pagecontents\PAGE}}%
3711 \endgroup % started in \begindoublecolumns
3713 % \pagegoal was set to the doubled \vsize above, since we restarted
3714 % the current page. We're now back to normal single-column
3715 % typesetting, so reset \pagegoal to the normal \vsize (after the
3716 % \endgroup where \vsize got restored).
3720 % Called at the end of the double column material.
3721 \def\balancecolumns{%
3722 \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
3724 \advance\dimen@ by \topskip
3725 \advance\dimen@ by-\baselineskip
3726 \divide\dimen@ by 2 % target to split to
3727 %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
3728 \splittopskip = \topskip
3729 % Loop until we get a decent breakpoint.
3733 \global\setbox3 = \copy0
3734 \global\setbox1 = \vsplit3 to \dimen@
3736 \global\advance\dimen@ by 1pt
3739 %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
3740 \setbox0=\vbox to\dimen@{\unvbox1}%
3741 \setbox2=\vbox to\dimen@{\unvbox3}%
3745 \catcode`\@ = \other
3748 \message{sectioning,}
3749 % Chapters, sections, etc.
3751 % \unnumberedno is an oxymoron, of course. But we count the unnumbered
3752 % sections so that we can refer to them unambiguously in the pdf
3753 % outlines by their "section number". We avoid collisions with chapter
3754 % numbers by starting them at 10000. (If a document ever has 10000
3755 % chapters, we're in trouble anyway, I'm sure.)
3756 \newcount\unnumberedno \unnumberedno = 10000
3758 \newcount\secno \secno=0
3759 \newcount\subsecno \subsecno=0
3760 \newcount\subsubsecno \subsubsecno=0
3762 % This counter is funny since it counts through charcodes of letters A, B, ...
3763 \newcount\appendixno \appendixno = `\@
3765 % \def\appendixletter{\char\the\appendixno}
3766 % We do the following ugly conditional instead of the above simple
3767 % construct for the sake of pdftex, which needs the actual
3768 % letter in the expansion, not just typeset.
3770 \def\appendixletter{%
3771 \ifnum\appendixno=`A A%
3772 \else\ifnum\appendixno=`B B%
3773 \else\ifnum\appendixno=`C C%
3774 \else\ifnum\appendixno=`D D%
3775 \else\ifnum\appendixno=`E E%
3776 \else\ifnum\appendixno=`F F%
3777 \else\ifnum\appendixno=`G G%
3778 \else\ifnum\appendixno=`H H%
3779 \else\ifnum\appendixno=`I I%
3780 \else\ifnum\appendixno=`J J%
3781 \else\ifnum\appendixno=`K K%
3782 \else\ifnum\appendixno=`L L%
3783 \else\ifnum\appendixno=`M M%
3784 \else\ifnum\appendixno=`N N%
3785 \else\ifnum\appendixno=`O O%
3786 \else\ifnum\appendixno=`P P%
3787 \else\ifnum\appendixno=`Q Q%
3788 \else\ifnum\appendixno=`R R%
3789 \else\ifnum\appendixno=`S S%
3790 \else\ifnum\appendixno=`T T%
3791 \else\ifnum\appendixno=`U U%
3792 \else\ifnum\appendixno=`V V%
3793 \else\ifnum\appendixno=`W W%
3794 \else\ifnum\appendixno=`X X%
3795 \else\ifnum\appendixno=`Y Y%
3796 \else\ifnum\appendixno=`Z Z%
3797 % The \the is necessary, despite appearances, because \appendixletter is
3798 % expanded while writing the .toc file. \char\appendixno is not
3799 % expandable, thus it is written literally, thus all appendixes come out
3800 % with the same letter (or @) in the toc without it.
3801 \else\char\the\appendixno
3802 \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
3803 \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}
3805 % Each @chapter defines this as the name of the chapter.
3806 % page headings and footings can use it. @section does likewise.
3807 % However, they are not reliable, because we don't use marks.
3811 \newcount\absseclevel % used to calculate proper heading level
3812 \newcount\secbase\secbase=0 % @raisesections/@lowersections modify this count
3814 % @raisesections: treat @section as chapter, @subsection as section, etc.
3815 \def\raisesections{\global\advance\secbase by -1}
3816 \let\up=\raisesections % original BFox name
3818 % @lowersections: treat @chapter as section, @section as subsection, etc.
3819 \def\lowersections{\global\advance\secbase by 1}
3820 \let\down=\lowersections % original BFox name
3822 % Choose a numbered-heading macro
3823 % #1 is heading level if unmodified by @raisesections or @lowersections
3824 % #2 is text for heading
3825 \def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
3829 \or \numberedsubseczzz{#2}%
3830 \or \numberedsubsubseczzz{#2}%
3832 \ifnum \absseclevel<0 \chapterzzz{#2}%
3833 \else \numberedsubsubseczzz{#2}%
3836 \suppressfirstparagraphindent
3839 % like \numhead, but chooses appendix heading levels
3840 \def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
3843 \or \appendixsectionzzz{#2}%
3844 \or \appendixsubseczzz{#2}%
3845 \or \appendixsubsubseczzz{#2}%
3847 \ifnum \absseclevel<0 \appendixzzz{#2}%
3848 \else \appendixsubsubseczzz{#2}%
3851 \suppressfirstparagraphindent
3854 % like \numhead, but chooses numberless heading levels
3855 \def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
3858 \or \unnumberedseczzz{#2}%
3859 \or \unnumberedsubseczzz{#2}%
3860 \or \unnumberedsubsubseczzz{#2}%
3862 \ifnum \absseclevel<0 \unnumberedzzz{#2}%
3863 \else \unnumberedsubsubseczzz{#2}%
3866 \suppressfirstparagraphindent
3869 % @chapter, @appendix, @unnumbered. Increment top-level counter, reset
3870 % all lower-level sectioning counters to zero.
3872 % Also set \chaplevelprefix, which we prepend to @float sequence numbers
3873 % (e.g., figures), q.v. By default (before any chapter), that is empty.
3874 \let\chaplevelprefix = \empty
3876 \outer\parseargdef\chapter{\numhead0{#1}} % normally numhead0 calls chapterzzz
3878 % section resetting is \global in case the chapter is in a group, such
3879 % as an @include file.
3880 \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
3881 \global\advance\chapno by 1
3884 \gdef\chaplevelprefix{\the\chapno.}%
3887 \message{\putwordChapter\space \the\chapno}%
3889 % Write the actual heading.
3890 \chapmacro{#1}{Ynumbered}{\the\chapno}%
3892 % So @section and the like are numbered underneath this chapter.
3893 \global\let\section = \numberedsec
3894 \global\let\subsection = \numberedsubsec
3895 \global\let\subsubsection = \numberedsubsubsec
3898 \outer\parseargdef\appendix{\apphead0{#1}} % normally apphead0 calls appendixzzz
3899 \def\appendixzzz#1{%
3900 \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
3901 \global\advance\appendixno by 1
3902 \gdef\chaplevelprefix{\appendixletter.}%
3905 \def\appendixnum{\putwordAppendix\space \appendixletter}%
3906 \message{\appendixnum}%
3908 \chapmacro{#1}{Yappendix}{\appendixletter}%
3910 \global\let\section = \appendixsec
3911 \global\let\subsection = \appendixsubsec
3912 \global\let\subsubsection = \appendixsubsubsec
3915 % @centerchap is like @unnumbered, but the heading is centered.
3916 \outer\parseargdef\centerchap{{\unnumberedyyy{#1}}}
3918 \outer\parseargdef\unnumbered{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
3919 \def\unnumberedzzz#1{%
3920 \global\secno=0 \global\subsecno=0 \global\subsubsecno=0
3921 \global\advance\unnumberedno by 1
3923 % Since an unnumbered has no number, no prefix for figures.
3924 \global\let\chaplevelprefix = \empty
3927 % This used to be simply \message{#1}, but TeX fully expands the
3928 % argument to \message. Therefore, if #1 contained @-commands, TeX
3929 % expanded them. For example, in `@unnumbered The @cite{Book}', TeX
3930 % expanded @cite (which turns out to cause errors because \cite is meant
3931 % to be executed, not expanded).
3933 % Anyway, we don't want the fully-expanded definition of @cite to appear
3934 % as a result of the \message, we just want `@cite' itself. We use
3935 % \the<toks register> to achieve this: TeX expands \the<toks> only once,
3936 % simply yielding the contents of <toks register>. (We also do this for
3939 \message{(\the\toks0)}%
3941 \chapmacro{#1}{Ynothing}{\the\unnumberedno}%
3943 \global\let\section = \unnumberedsec
3944 \global\let\subsection = \unnumberedsubsec
3945 \global\let\subsubsection = \unnumberedsubsubsec
3948 % @top is like @unnumbered.
3952 \outer\parseargdef\numberedsec{\numhead1{#1}} % normally calls seczzz
3954 \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1
3955 \sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%
3958 \outer\parseargdef\appendixsection{\apphead1{#1}} % normally calls appendixsectionzzz
3959 \def\appendixsectionzzz#1{%
3960 \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1
3961 \sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%
3963 \let\appendixsec\appendixsection
3965 \outer\parseargdef\unnumberedsec{\unnmhead1{#1}} % normally calls unnumberedseczzz
3966 \def\unnumberedseczzz#1{%
3967 \global\subsecno=0 \global\subsubsecno=0 \global\advance\secno by 1
3968 \sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%
3972 \outer\parseargdef\numberedsubsec{\numhead2{#1}} % normally calls numberedsubseczzz
3973 \def\numberedsubseczzz#1{%
3974 \global\subsubsecno=0 \global\advance\subsecno by 1
3975 \sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%
3978 \outer\parseargdef\appendixsubsec{\apphead2{#1}} % normally calls appendixsubseczzz
3979 \def\appendixsubseczzz#1{%
3980 \global\subsubsecno=0 \global\advance\subsecno by 1
3981 \sectionheading{#1}{subsec}{Yappendix}%
3982 {\appendixletter.\the\secno.\the\subsecno}%
3985 \outer\parseargdef\unnumberedsubsec{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
3986 \def\unnumberedsubseczzz#1{%
3987 \global\subsubsecno=0 \global\advance\subsecno by 1
3988 \sectionheading{#1}{subsec}{Ynothing}%
3989 {\the\unnumberedno.\the\secno.\the\subsecno}%
3993 \outer\parseargdef\numberedsubsubsec{\numhead3{#1}} % normally numberedsubsubseczzz
3994 \def\numberedsubsubseczzz#1{%
3995 \global\advance\subsubsecno by 1
3996 \sectionheading{#1}{subsubsec}{Ynumbered}%
3997 {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%
4000 \outer\parseargdef\appendixsubsubsec{\apphead3{#1}} % normally appendixsubsubseczzz
4001 \def\appendixsubsubseczzz#1{%
4002 \global\advance\subsubsecno by 1
4003 \sectionheading{#1}{subsubsec}{Yappendix}%
4004 {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%
4007 \outer\parseargdef\unnumberedsubsubsec{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
4008 \def\unnumberedsubsubseczzz#1{%
4009 \global\advance\subsubsecno by 1
4010 \sectionheading{#1}{subsubsec}{Ynothing}%
4011 {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%
4014 % These are variants which are not "outer", so they can appear in @ifinfo.
4015 % Actually, they are now be obsolete; ordinary section commands should work.
4016 \def\infotop{\parsearg\unnumberedzzz}
4017 \def\infounnumbered{\parsearg\unnumberedzzz}
4018 \def\infounnumberedsec{\parsearg\unnumberedseczzz}
4019 \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
4020 \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
4022 \def\infoappendix{\parsearg\appendixzzz}
4023 \def\infoappendixsec{\parsearg\appendixseczzz}
4024 \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
4025 \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
4027 \def\infochapter{\parsearg\chapterzzz}
4028 \def\infosection{\parsearg\sectionzzz}
4029 \def\infosubsection{\parsearg\subsectionzzz}
4030 \def\infosubsubsection{\parsearg\subsubsectionzzz}
4032 % These macros control what the section commands do, according
4033 % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
4034 % Define them by default for a numbered chapter.
4035 \let\section = \numberedsec
4036 \let\subsection = \numberedsubsec
4037 \let\subsubsection = \numberedsubsubsec
4039 % Define @majorheading, @heading and @subheading
4041 % NOTE on use of \vbox for chapter headings, section headings, and such:
4042 % 1) We use \vbox rather than the earlier \line to permit
4043 % overlong headings to fold.
4044 % 2) \hyphenpenalty is set to 10000 because hyphenation in a
4045 % heading is obnoxious; this forbids it.
4046 % 3) Likewise, headings look best if no \parindent is used, and
4047 % if justification is not attempted. Hence \raggedright.
4051 {\advance\chapheadingskip by 10pt \chapbreak }%
4052 \parsearg\chapheadingzzz
4055 \def\chapheading{\chapbreak \parsearg\chapheadingzzz}
4056 \def\chapheadingzzz#1{%
4057 {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
4058 \parindent=0pt\raggedright
4060 \bigskip \par\penalty 200\relax
4061 \suppressfirstparagraphindent
4064 % @heading, @subheading, @subsubheading.
4065 \parseargdef\heading{\sectionheading{#1}{sec}{Yomitfromtoc}{}
4066 \suppressfirstparagraphindent}
4067 \parseargdef\subheading{\sectionheading{#1}{subsec}{Yomitfromtoc}{}
4068 \suppressfirstparagraphindent}
4069 \parseargdef\subsubheading{\sectionheading{#1}{subsubsec}{Yomitfromtoc}{}
4070 \suppressfirstparagraphindent}
4072 % These macros generate a chapter, section, etc. heading only
4073 % (including whitespace, linebreaking, etc. around it),
4074 % given all the information in convenient, parsed form.
4076 %%% Args are the skip and penalty (usually negative)
4077 \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
4079 \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
4081 %%% Define plain chapter starts, and page on/off switching for it
4082 % Parameter controlling skip before chapter headings (if needed)
4084 \newskip\chapheadingskip
4086 \def\chapbreak{\dobreak \chapheadingskip {-4000}}
4087 \def\chappager{\par\vfill\supereject}
4088 \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
4090 \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
4093 \global\let\contentsalignmacro = \chappager
4094 \global\let\pchapsepmacro=\chapbreak
4095 \global\let\pagealignmacro=\chappager}
4098 \global\let\contentsalignmacro = \chappager
4099 \global\let\pchapsepmacro=\chappager
4100 \global\let\pagealignmacro=\chappager
4101 \global\def\HEADINGSon{\HEADINGSsingle}}
4104 \global\let\contentsalignmacro = \chapoddpage
4105 \global\let\pchapsepmacro=\chapoddpage
4106 \global\let\pagealignmacro=\chapoddpage
4107 \global\def\HEADINGSon{\HEADINGSdouble}}
4112 \global\let\chapmacro=\chfplain
4113 \global\let\centerchapmacro=\centerchfplain}
4115 % Normal chapter opening.
4117 % #1 is the text, #2 is the section type (Ynumbered, Ynothing,
4118 % Yappendix, Yomitfromtoc), #3 the chapter number.
4120 % To test against our argument.
4121 \def\Ynothingkeyword{Ynothing}
4122 \def\Yomitfromtockeyword{Yomitfromtoc}
4123 \def\Yappendixkeyword{Yappendix}
4125 \def\chfplain#1#2#3{%
4130 % Have to define \thissection before calling \donoderef, because the
4131 % xref code eventually uses it. On the other hand, it has to be called
4132 % after \pchapsepmacro, or the headline will change too soon.
4133 \gdef\thissection{#1}%
4134 \gdef\thischaptername{#1}%
4136 % Only insert the separating space if we have a chapter/appendix
4137 % number, and don't print the unnumbered ``number''.
4139 \ifx\temptype\Ynothingkeyword
4141 \def\toctype{unnchap}%
4142 \def\thischapter{#1}%
4143 \else\ifx\temptype\Yomitfromtockeyword
4144 \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
4146 \xdef\thischapter{}%
4147 \else\ifx\temptype\Yappendixkeyword
4148 \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
4150 % We don't substitute the actual chapter name into \thischapter
4151 % because we don't want its macros evaluated now. And we don't
4152 % use \thissection because that changes with each section.
4154 \xdef\thischapter{\putwordAppendix{} \appendixletter:
4155 \noexpand\thischaptername}%
4157 \setbox0 = \hbox{#3\enspace}%
4158 \def\toctype{numchap}%
4159 \xdef\thischapter{\putwordChapter{} \the\chapno:
4160 \noexpand\thischaptername}%
4163 % Write the toc entry for this chapter. Must come before the
4164 % \donoderef, because we include the current node name in the toc
4165 % entry, and \donoderef resets it to empty.
4166 \writetocentry{\toctype}{#1}{#3}%
4168 % For pdftex, we have to write out the node definition (aka, make
4169 % the pdfdest) after any page break, but before the actual text has
4170 % been typeset. If the destination for the pdf outline is after the
4171 % text, then jumping from the outline may wind up with the text not
4172 % being visible, for instance under high magnification.
4175 % Typeset the actual heading.
4176 \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
4177 \hangindent=\wd0 \centerparametersmaybe
4180 \nobreak\bigskip % no page break after a chapter title
4184 % @centerchap -- centered and unnumbered.
4185 \let\centerparametersmaybe = \relax
4186 \def\centerchfplain#1{{%
4187 \def\centerparametersmaybe{%
4188 \advance\rightskip by 3\rightskip
4189 \leftskip = \rightskip
4192 \chfplain{#1}{Ynothing}{}%
4195 \CHAPFplain % The default
4197 % I don't think this chapter style is supported any more, so I'm not
4198 % updating it with the new noderef stuff. We'll see. --karl, 11aug03.
4200 \def\unnchfopen #1{%
4201 \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
4202 \parindent=0pt\raggedright
4203 \rm #1\hfill}}\bigskip \par\nobreak
4206 \def\chfopen #1#2{\chapoddpage {\chapfonts
4207 \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
4211 \def\centerchfopen #1{%
4212 \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
4214 \hfill {\rm #1}\hfill}}\bigskip \par\nobreak
4218 \global\let\chapmacro=\chfopen
4219 \global\let\centerchapmacro=\centerchfopen}
4222 % Section titles. These macros combine the section number parts and
4223 % call the generic \sectionheading to do the printing.
4225 \newskip\secheadingskip
4226 \def\secheadingbreak{\dobreak \secheadingskip{-1000}}
4228 % Subsection titles.
4229 \newskip\subsecheadingskip
4230 \def\subsecheadingbreak{\dobreak \subsecheadingskip{-500}}
4232 % Subsubsection titles.
4233 \def\subsubsecheadingskip{\subsecheadingskip}
4234 \def\subsubsecheadingbreak{\subsecheadingbreak}
4237 % Print any size, any type, section title.
4239 % #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is
4240 % the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the
4243 \def\sectionheading#1#2#3#4{%
4245 % Switch to the right set of fonts.
4246 \csname #2fonts\endcsname \rm
4248 % Insert space above the heading.
4249 \csname #2headingbreak\endcsname
4251 % Only insert the space after the number if we have a section number.
4252 \def\sectionlevel{#2}%
4255 \ifx\temptype\Ynothingkeyword
4258 \gdef\thissection{#1}%
4259 \else\ifx\temptype\Yomitfromtockeyword
4260 % for @headings -- no section number, don't include in toc,
4261 % and don't redefine \thissection.
4264 \let\sectionlevel=\empty
4265 \else\ifx\temptype\Yappendixkeyword
4266 \setbox0 = \hbox{#4\enspace}%
4268 \gdef\thissection{#1}%
4270 \setbox0 = \hbox{#4\enspace}%
4272 \gdef\thissection{#1}%
4275 % Write the toc entry (before \donoderef). See comments in \chfplain.
4276 \writetocentry{\toctype\sectionlevel}{#1}{#4}%
4278 % Write the node reference (= pdf destination for pdftex).
4279 % Again, see comments in \chfplain.
4282 % Output the actual section heading.
4283 \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
4284 \hangindent=\wd0 % zero if no section number
4287 % Add extra space after the heading -- half of whatever came above it.
4288 % Don't allow stretch, though.
4289 \kern .5 \csname #2headingskip\endcsname
4291 % Do not let the kern be a potential breakpoint, as it would be if it
4292 % was followed by glue.
4295 % We'll almost certainly start a paragraph next, so don't let that
4296 % glue accumulate. (Not a breakpoint because it's preceded by a
4297 % discardable item.)
4300 % This \nobreak is purely so the last item on the list is a \penalty
4301 % of 10000. This is so other code, for instance \parsebodycommon, can
4302 % check for and avoid allowing breakpoints. Otherwise, it would
4303 % insert a valid breakpoint between:
4304 % @section sec-whatever
4305 % @deffn def-whatever
4311 % Table of contents.
4314 % Write an entry to the toc file, opening it if necessary.
4315 % Called from @chapter, etc.
4317 % Example usage: \writetocentry{sec}{Section Name}{\the\chapno.\the\secno}
4318 % We append the current node name (if any) and page number as additional
4319 % arguments for the \{chap,sec,...}entry macros which will eventually
4320 % read this. The node name is used in the pdf outlines as the
4321 % destination to jump to.
4323 % We open the .toc file for writing here instead of at @setfilename (or
4324 % any other fixed time) so that @contents can be anywhere in the document.
4325 % But if #1 is `omit', then we don't do anything. This is used for the
4326 % table of contents chapter openings themselves.
4328 \newif\iftocfileopened
4329 \def\omitkeyword{omit}%
4331 \def\writetocentry#1#2#3{%
4332 \edef\writetoctype{#1}%
4333 \ifx\writetoctype\omitkeyword \else
4334 \iftocfileopened\else
4335 \immediate\openout\tocfile = \jobname.toc
4336 \global\tocfileopenedtrue
4341 \toks2 = \expandafter{\lastnode}%
4342 \edef\temp{\write\tocfile{\realbackslash #1entry{\the\toks0}{#3}%
4343 {\the\toks2}{\noexpand\folio}}}%
4348 % Tell \shipout to create a pdf destination on each page, if we're
4349 % writing pdf. These are used in the table of contents. We can't
4350 % just write one on every page because the title pages are numbered
4351 % 1 and 2 (the page numbers aren't printed), and so are the first
4352 % two pages of the document. Thus, we'd have two destinations named
4353 % `1', and two named `2'.
4354 \ifpdf \global\pdfmakepagedesttrue \fi
4357 \newskip\contentsrightmargin \contentsrightmargin=1in
4358 \newcount\savepageno
4359 \newcount\lastnegativepageno \lastnegativepageno = -1
4361 % Prepare to read what we've written to \tocfile.
4363 \def\startcontents#1{%
4364 % If @setchapternewpage on, and @headings double, the contents should
4365 % start on an odd page, unlike chapters. Thus, we maintain
4366 % \contentsalignmacro in parallel with \pagealignmacro.
4367 % From: Torbjorn Granlund <tege@matematik.su.se>
4369 \immediate\closeout\tocfile
4371 % Don't need to put `Contents' or `Short Contents' in the headline.
4372 % It is abundantly clear what they are.
4374 \chapmacro{#1}{Yomitfromtoc}{}%
4376 \savepageno = \pageno
4377 \begingroup % Set up to handle contents files properly.
4378 \catcode`\\=0 \catcode`\{=1 \catcode`\}=2 \catcode`\@=11
4379 % We can't do this, because then an actual ^ in a section
4380 % title fails, e.g., @chapter ^ -- exponentiation. --karl, 9jul97.
4381 %\catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
4382 \raggedbottom % Worry more about breakpoints than the bottom.
4383 \advance\hsize by -\contentsrightmargin % Don't use the full line length.
4385 % Roman numerals for page numbers.
4386 \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi
4390 % Normal (long) toc.
4392 \startcontents{\putwordTOC}%
4393 \openin 1 \jobname.toc
4398 \contentsalignmacro % in case @setchapternewpage odd is in effect
4404 \lastnegativepageno = \pageno
4405 \global\pageno = \savepageno
4408 % And just the chapters.
4409 \def\summarycontents{%
4410 \startcontents{\putwordShortTOC}%
4412 \let\numchapentry = \shortchapentry
4413 \let\appentry = \shortchapentry
4414 \let\unnchapentry = \shortunnchapentry
4415 % We want a true roman here for the page numbers.
4417 \let\rm=\shortcontrm \let\bf=\shortcontbf
4418 \let\sl=\shortcontsl \let\tt=\shortconttt
4420 \hyphenpenalty = 10000
4421 \advance\baselineskip by 1pt % Open it up a little.
4422 \def\numsecentry##1##2##3##4{}
4423 \let\appsecentry = \numsecentry
4424 \let\unnsecentry = \numsecentry
4425 \let\numsubsecentry = \numsecentry
4426 \let\appsubsecentry = \numsecentry
4427 \let\unnsubsecentry = \numsecentry
4428 \let\numsubsubsecentry = \numsecentry
4429 \let\appsubsubsecentry = \numsecentry
4430 \let\unnsubsubsecentry = \numsecentry
4431 \openin 1 \jobname.toc
4437 \contentsalignmacro % in case @setchapternewpage odd is in effect
4439 \lastnegativepageno = \pageno
4440 \global\pageno = \savepageno
4442 \let\shortcontents = \summarycontents
4444 % Typeset the label for a chapter or appendix for the short contents.
4445 % The arg is, e.g., `A' for an appendix, or `3' for a chapter.
4447 \def\shortchaplabel#1{%
4448 % This space should be enough, since a single number is .5em, and the
4449 % widest letter (M) is 1em, at least in the Computer Modern fonts.
4450 % But use \hss just in case.
4451 % (This space doesn't include the extra space that gets added after
4452 % the label; that gets put in by \shortchapentry above.)
4454 % We'd like to right-justify chapter numbers, but that looks strange
4455 % with appendix letters. And right-justifying numbers and
4456 % left-justifying letters looks strange when there is less than 10
4457 % chapters. Have to read the whole toc once to know how many chapters
4458 % there are before deciding ...
4459 \hbox to 1em{#1\hss}%
4462 % These macros generate individual entries in the table of contents.
4463 % The first argument is the chapter or section name.
4464 % The last argument is the page number.
4465 % The arguments in between are the chapter number, section number, ...
4467 % Chapters, in the main contents.
4468 \def\numchapentry#1#2#3#4{\dochapentry{#2\labelspace#1}{#4}}
4470 % Chapters, in the short toc.
4471 % See comments in \dochapentry re vbox and related settings.
4472 \def\shortchapentry#1#2#3#4{%
4473 \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%
4476 % Appendices, in the main contents.
4477 % Need the word Appendix, and a fixed-size box.
4479 \def\appendixbox#1{%
4480 % We use M since it's probably the widest letter.
4481 \setbox0 = \hbox{\putwordAppendix{} M}%
4482 \hbox to \wd0{\putwordAppendix{} #1\hss}}
4484 \def\appentry#1#2#3#4{\dochapentry{\appendixbox{#2}\labelspace#1}{#4}}
4486 % Unnumbered chapters.
4487 \def\unnchapentry#1#2#3#4{\dochapentry{#1}{#4}}
4488 \def\shortunnchapentry#1#2#3#4{\tocentry{#1}{\doshortpageno\bgroup#4\egroup}}
4491 \def\numsecentry#1#2#3#4{\dosecentry{#2\labelspace#1}{#4}}
4492 \let\appsecentry=\numsecentry
4493 \def\unnsecentry#1#2#3#4{\dosecentry{#1}{#4}}
4496 \def\numsubsecentry#1#2#3#4{\dosubsecentry{#2\labelspace#1}{#4}}
4497 \let\appsubsecentry=\numsubsecentry
4498 \def\unnsubsecentry#1#2#3#4{\dosubsecentry{#1}{#4}}
4500 % And subsubsections.
4501 \def\numsubsubsecentry#1#2#3#4{\dosubsubsecentry{#2\labelspace#1}{#4}}
4502 \let\appsubsubsecentry=\numsubsubsecentry
4503 \def\unnsubsubsecentry#1#2#3#4{\dosubsubsecentry{#1}{#4}}
4505 % This parameter controls the indentation of the various levels.
4506 % Same as \defaultparindent.
4507 \newdimen\tocindent \tocindent = 15pt
4509 % Now for the actual typesetting. In all these, #1 is the text and #2 is the
4512 % If the toc has to be broken over pages, we want it to be at chapters
4513 % if at all possible; hence the \penalty.
4514 \def\dochapentry#1#2{%
4515 \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
4518 \tocentry{#1}{\dopageno\bgroup#2\egroup}%
4520 \nobreak\vskip .25\baselineskip plus.1\baselineskip
4523 \def\dosecentry#1#2{\begingroup
4524 \secentryfonts \leftskip=\tocindent
4525 \tocentry{#1}{\dopageno\bgroup#2\egroup}%
4528 \def\dosubsecentry#1#2{\begingroup
4529 \subsecentryfonts \leftskip=2\tocindent
4530 \tocentry{#1}{\dopageno\bgroup#2\egroup}%
4533 \def\dosubsubsecentry#1#2{\begingroup
4534 \subsubsecentryfonts \leftskip=3\tocindent
4535 \tocentry{#1}{\dopageno\bgroup#2\egroup}%
4538 % We use the same \entry macro as for the index entries.
4539 \let\tocentry = \entry
4541 % Space between chapter (or whatever) number and the title.
4542 \def\labelspace{\hskip1em \relax}
4544 \def\dopageno#1{{\rm #1}}
4545 \def\doshortpageno#1{{\rm #1}}
4547 \def\chapentryfonts{\secfonts \rm}
4548 \def\secentryfonts{\textfonts}
4549 \def\subsecentryfonts{\textfonts}
4550 \def\subsubsecentryfonts{\textfonts}
4553 \message{environments,}
4554 % @foo ... @end foo.
4556 % @point{}, @result{}, @expansion{}, @print{}, @equiv{}.
4558 % Since these characters are used in examples, it should be an even number of
4559 % \tt widths. Each \tt character is 1en, so two makes it 1em.
4562 \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
4563 \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
4564 \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
4565 \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
4567 % The @error{} command.
4568 % Adapted from the TeXbook's \boxit.
4572 {\tentt \global\dimen0 = 3em}% Width of the box.
4573 \dimen2 = .55pt % Thickness of rules
4574 % The text. (`r' is open on the right, `e' somewhat less so on the left.)
4575 \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
4577 \setbox\errorbox=\hbox to \dimen0{\hfil
4578 \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
4579 \advance\hsize by -2\dimen2 % Rules.
4581 \hrule height\dimen2
4582 \hbox{\vrule width\dimen2 \kern3pt % Space to left of text.
4583 \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
4584 \kern3pt\vrule width\dimen2}% Space to right.
4585 \hrule height\dimen2}
4588 \def\error{\leavevmode\lower.7ex\copy\errorbox}
4590 % @tex ... @end tex escapes into raw Tex temporarily.
4591 % One exception: @ is still an escape character, so that @end tex works.
4592 % But \@ or @@ will get a plain tex @ character.
4595 \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
4596 \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
4597 \catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
4607 \let\bullet=\ptexbullet
4612 \let\equiv=\ptexequiv
4615 \let\indent=\ptexindent
4616 \let\noindent=\ptexnoindent
4624 \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
4625 \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
4628 % There is no need to define \Etex.
4630 % Define @lisp ... @end lisp.
4631 % @lisp environment forms a group so it can rebind things,
4632 % including the definition of @end lisp (which normally is erroneous).
4634 % Amount to narrow the margins by for @lisp.
4635 \newskip\lispnarrowing \lispnarrowing=0.4in
4637 % This is the definition that ^^M gets inside @lisp, @example, and other
4638 % such environments. \null is better than a space, since it doesn't
4640 \def\lisppar{\null\endgraf}
4642 % This space is always present above and below environments.
4643 \newskip\envskipamount \envskipamount = 0pt
4645 % Make spacing and below environment symmetrical. We use \parskip here
4646 % to help in doing that, since in @example-like environments \parskip
4647 % is reset to zero; thus the \afterenvbreak inserts no space -- but the
4648 % start of the next paragraph will insert \parskip.
4650 \def\aboveenvbreak{{%
4651 % =10000 instead of <10000 because of a special case in \itemzzz, q.v.
4652 \ifnum \lastpenalty=10000 \else
4653 \advance\envskipamount by \parskip
4655 \ifdim\lastskip<\envskipamount
4657 % it's not a good place to break if the last penalty was \nobreak
4659 \ifnum\lastpenalty<10000 \penalty-50 \fi
4660 \vskip\envskipamount
4665 \let\afterenvbreak = \aboveenvbreak
4667 % \nonarrowing is a flag. If "set", @lisp etc don't narrow margins.
4668 \let\nonarrowing=\relax
4670 % @cartouche ... @end cartouche: draw rectangle w/rounded corners around
4671 % environment contents.
4672 \font\circle=lcircle10
4674 \newdimen\cartouter\newdimen\cartinner
4675 \newskip\normbskip\newskip\normpskip\newskip\normlskip
4676 \circthick=\fontdimen8\circle
4678 \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
4679 \def\ctr{{\hskip 6pt\circle\char'010}}
4680 \def\cbl{{\circle\char'012\hskip -6pt}}
4681 \def\cbr{{\hskip 6pt\circle\char'011}}
4682 \def\carttop{\hbox to \cartouter{\hskip\lskip
4683 \ctl\leaders\hrule height\circthick\hfil\ctr
4685 \def\cartbot{\hbox to \cartouter{\hskip\lskip
4686 \cbl\leaders\hrule height\circthick\hfil\cbr
4689 \newskip\lskip\newskip\rskip
4692 \ifhmode\par\fi % can't be in the midst of a paragraph.
4694 \lskip=\leftskip \rskip=\rightskip
4695 \leftskip=0pt\rightskip=0pt % we want these *outside*.
4696 \cartinner=\hsize \advance\cartinner by-\lskip
4697 \advance\cartinner by-\rskip
4699 \advance\cartouter by 18.4pt % allow for 3pt kerns on either
4700 % side, and for 6pt waste from
4701 % each corner char, and rule thickness
4702 \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
4703 % Flag to tell @lisp, etc., not to narrow margin.
4704 \let\nonarrowing=\comment
4706 \baselineskip=0pt\parskip=0pt\lineskip=0pt
4714 \baselineskip=\normbskip
4715 \lineskip=\normlskip
4718 \comment % For explanation, see the end of \def\group.
4733 % This macro is called at the beginning of all the @example variants,
4737 \hfuzz = 12pt % Don't be fussy
4738 \sepspaces % Make spaces be word-separators rather than space tokens.
4739 \let\par = \lisppar % don't ignore blank lines
4740 \obeylines % each line of input is a line of output
4743 \emergencystretch = 0pt % don't try to avoid overfull boxes
4744 % @cartouche defines \nonarrowing to inhibit narrowing
4745 % at next level down.
4746 \ifx\nonarrowing\relax
4747 \advance \leftskip by \lispnarrowing
4748 \exdentamount=\lispnarrowing
4750 \let\exdent=\nofillexdent
4753 % If you want all examples etc. small: @set dispenvsize small.
4754 % If you want even small examples the full size: @set dispenvsize nosmall.
4755 % This affects the following displayed environments:
4756 % @example, @display, @format, @lisp
4758 \def\smallword{small}
4759 \def\nosmallword{nosmall}
4760 \let\SETdispenvsize\relax
4761 \def\setnormaldispenv{%
4762 \ifx\SETdispenvsize\smallword
4763 \smallexamplefonts \rm
4766 \def\setsmalldispenv{%
4767 \ifx\SETdispenvsize\nosmallword
4769 \smallexamplefonts \rm
4773 % We often define two environments, @foo and @smallfoo.
4774 % Let's do it by one command:
4775 \def\makedispenv #1#2{
4776 \expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}
4777 \expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}
4778 \expandafter\let\csname E#1\endcsname \afterenvbreak
4779 \expandafter\let\csname Esmall#1\endcsname \afterenvbreak
4782 % Define two synonyms:
4783 \def\maketwodispenvs #1#2#3{
4784 \makedispenv{#1}{#3}
4785 \makedispenv{#2}{#3}
4788 % @lisp: indented, narrowed, typewriter font; @example: same as @lisp.
4790 % @smallexample and @smalllisp: use smaller fonts.
4791 % Originally contributed by Pavel@xerox.
4793 \maketwodispenvs {lisp}{example}{%
4796 \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
4797 \gobble % eat return
4800 % @display/@smalldisplay: same as @lisp except keep current font.
4802 \makedispenv {display}{%
4807 % @format/@smallformat: same as @display except don't narrow margins.
4809 \makedispenv{format}{%
4810 \let\nonarrowing = t%
4815 % @flushleft: same as @format, but doesn't obey \SETdispenvsize.
4817 \let\nonarrowing = t%
4821 \let\Eflushleft = \afterenvbreak
4825 \envdef\flushright{%
4826 \let\nonarrowing = t%
4828 \advance\leftskip by 0pt plus 1fill
4831 \let\Eflushright = \afterenvbreak
4834 % @quotation does normal linebreaking (hence we can't use \nonfillstart)
4835 % and narrows the margins.
4838 {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
4841 % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
4842 \ifx\nonarrowing\relax
4843 \advance\leftskip by \lispnarrowing
4844 \advance\rightskip by \lispnarrowing
4845 \exdentamount = \lispnarrowing
4846 \let\nonarrowing = \relax
4848 \parsearg\quotationlabel
4851 % We have retained a nonzero parskip for the environment, since we're
4852 % doing normal filling. So to avoid extra space below the environment...
4853 \def\Equotation{\parskip = 0pt \afterenvbreak}
4855 % If we're given an argument, typeset it in bold with a colon after.
4856 \def\quotationlabel#1{%
4858 \ifx\temp\empty \else
4864 % LaTeX-like @verbatim...@end verbatim and @verb{<char>...<char>}
4865 % If we want to allow any <char> as delimiter,
4866 % we need the curly braces so that makeinfo sees the @verb command, eg:
4867 % `@verbx...x' would look like the '@verbx' command. --janneke@gnu.org
4869 % [Knuth]: Donald Ervin Knuth, 1996. The TeXbook.
4871 % [Knuth] p.344; only we need to do the other characters Texinfo sets
4872 % active too. Otherwise, they get lost as the first character on a
4875 \do\ \do\\\do\{\do\}\do\$\do\&%
4876 \do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
4877 \do\<\do\>\do\|\do\@\do+\do\"%
4881 \def\uncatcodespecials{%
4882 \def\do##1{\catcode`##1=\other}\dospecials}
4884 % [Knuth] pp. 380,381,391
4885 % Disable Spanish ligatures ?` and !` of \tt font
4887 \catcode`\`=\active\gdef`{\relax\lq}
4890 % Setup for the @verb command.
4892 % Eight spaces for a tab
4894 \catcode`\^^I=\active
4895 \gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}
4899 \tt % easiest (and conventionally used) font for verbatim
4900 \def\par{\leavevmode\endgraf}%
4903 % Respect line breaks,
4904 % print special symbols as themselves, and
4905 % make each space count
4906 % must do in this order:
4907 \obeylines \uncatcodespecials \sepspaces
4910 % Setup for the @verbatim environment
4912 % Real tab expansion
4913 \newdimen\tabw \setbox0=\hbox{\tt\space} \tabw=8\wd0 % tab amount
4915 \def\starttabbox{\setbox0=\hbox\bgroup}
4917 \catcode`\^^I=\active
4919 \catcode`\^^I=\active
4920 \def^^I{\leavevmode\egroup
4921 \dimen0=\wd0 % the width so far, or since the previous tab
4922 \divide\dimen0 by\tabw
4923 \multiply\dimen0 by\tabw % compute previous multiple of \tabw
4924 \advance\dimen0 by\tabw % advance to next multiple of \tabw
4925 \wd0=\dimen0 \box0 \starttabbox
4929 \def\setupverbatim{%
4931 \advance\leftskip by -\defbodyindent
4932 % Easiest (and conventionally used) font for verbatim
4934 \def\par{\leavevmode\egroup\box0\endgraf}%
4937 % Respect line breaks,
4938 % print special symbols as themselves, and
4939 % make each space count
4940 % must do in this order:
4941 \obeylines \uncatcodespecials \sepspaces
4942 \everypar{\starttabbox}%
4945 % Do the @verb magic: verbatim text is quoted by unique
4946 % delimiter characters. Before first delimiter expect a
4947 % right brace, after last delimiter expect closing brace:
4949 % \def\doverb'{'<char>#1<char>'}'{#1}
4951 % [Knuth] p. 382; only eat outer {}
4953 \catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
4954 \gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]
4957 \def\verb{\begingroup\setupverb\doverb}
4960 % Do the @verbatim magic: define the macro \doverbatim so that
4961 % the (first) argument ends when '@end verbatim' is reached, ie:
4963 % \def\doverbatim#1@end verbatim{#1}
4965 % For Texinfo it's a lot easier than for LaTeX,
4966 % because texinfo's \verbatim doesn't stop at '\end{verbatim}':
4967 % we need not redefine '\', '{' and '}'.
4969 % Inspired by LaTeX's verbatim command set [latex.ltx]
4974 % ignore everything up to the first ^^M, that's the newline at the end
4975 % of the @verbatim input line itself. Otherwise we get an extra blank
4976 % line in the output.
4977 \xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}%
4978 % We really want {...\end verbatim} in the body of the macro, but
4979 % without the active space; thus we have to use \xdef and \gobble.
4983 \setupverbatim\doverbatim
4985 \let\Everbatim = \afterenvbreak
4988 % @verbatiminclude FILE - insert text of file in verbatim environment.
4990 \def\verbatiminclude{\parseargusing\filenamecatcodes\doverbatiminclude}
4992 \def\doverbatiminclude#1{%
4994 \makevalueexpandable
5001 % @copying ... @end copying.
5002 % Save the text away for @insertcopying later. Many commands won't be
5003 % allowed in this context, but that's ok.
5005 % We save the uninterpreted tokens, rather than creating a box.
5006 % Saving the text in a box would be much easier, but then all the
5007 % typesetting commands (@smallbook, font changes, etc.) have to be done
5008 % beforehand -- and a) we want @copying to be done first in the source
5009 % file; b) letting users define the frontmatter in as flexible order as
5010 % possible is very desirable.
5012 \def\copying{\begingroup
5013 % Define a command to swallow text until we reach `@end copying'.
5014 % \ is the escape char in this texinfo.tex file, so it is the
5015 % delimiter for the command; @ will be the escape char when we read
5016 % it, but that doesn't matter.
5017 \long\def\docopying##1\end copying{\gdef\copyingtext{##1}\enddocopying}%
5019 % We must preserve ^^M's in the input file; see \insertcopying below.
5020 \catcode`\^^M = \active
5024 % What we do to finish off the copying text.
5026 \def\enddocopying{\endgroup\ignorespaces}
5028 % @insertcopying. Here we must play games with ^^M's. On the one hand,
5029 % we need them to delimit commands such as `@end quotation', so they
5030 % must be active. On the other hand, we certainly don't want every
5031 % end-of-line to be a \par, as would happen with the normal active
5032 % definition of ^^M. On the third hand, two ^^M's in a row should still
5035 % Our approach is to make ^^M insert a space and a penalty1 normally;
5036 % then it can also check if \lastpenalty=1. If it does, then manually
5039 % This messes up the normal definitions of @c[omment], so we redefine
5040 % it. Similarly for @ignore. (These commands are used in the gcc
5041 % manual for man page generation.)
5043 % Seems pretty fragile, most line-oriented commands will presumably
5044 % fail, but for the limited use of getting the copying text (which
5045 % should be quite simple) inserted, we can hope it's ok.
5047 {\catcode`\^^M=\active %
5048 \gdef\insertcopying{\begingroup %
5049 \parindent = 0pt % looks wrong on title page
5051 \ifnum \lastpenalty=1 %
5058 % Fix @c[omment] for catcode 13 ^^M's.
5059 \def\c##1^^M{\ignorespaces}%
5062 % Don't bother jumping through all the hoops that \doignore does, it
5063 % would be very hard since the catcodes are already set.
5064 \long\def\ignore##1\end ignore{\ignorespaces}%
5073 \newskip\defbodyindent \defbodyindent=.4in
5074 \newskip\defargsindent \defargsindent=50pt
5075 \newskip\deflastargmargin \deflastargmargin=18pt
5077 % Start the processing of @deffn:
5079 \ifnum\lastpenalty<10000
5082 % If there are two @def commands in a row, we'll have a \nobreak,
5083 % which is there to keep the function description together with its
5084 % header. But if there's nothing but headers, we need to allow a
5085 % break somewhere. Check for penalty 10002 (inserted by
5086 % \defargscommonending) instead of 10000, since the sectioning
5087 % commands insert a \penalty10000, and we don't want to allow a break
5088 % between a section heading and a defun.
5089 \ifnum\lastpenalty=10002 \penalty2000 \fi
5091 % Similarly, after a section heading, do not allow a break.
5092 % But do insert the glue.
5093 \medskip % preceded by discardable penalty, so not a breakpoint
5097 \advance\leftskip by \defbodyindent
5098 \exdentamount=\defbodyindent
5102 % First, check whether we are in the right environment:
5105 % As above, allow line break if we have multiple x headers in a row.
5106 % It's not a great place, though.
5107 \ifnum\lastpenalty=10002 \penalty3000 \fi
5109 % And now, it's time to reuse the body of the original defun:
5110 \expandafter\gobbledefun#1%
5112 \def\gobbledefun#1\startdefun{}
5114 % \printdefunline \deffnheader{text}
5116 \def\printdefunline#1#2{%
5118 % call \deffnheader:
5121 \interlinepenalty = 10000
5122 \advance\rightskip by 0pt plus 1fil
5124 \nobreak\vskip -\parskip
5125 \penalty 10002 % signal to \startdefun and \dodefunx
5126 % Some of the @defun-type tags do not enable magic parentheses,
5127 % rendering the following check redundant. But we don't optimize.
5132 \def\Edefun{\endgraf\medbreak}
5134 % \makedefun{deffn} creates \deffn, \deffnx and \Edeffn;
5135 % the only thing remainnig is to define \deffnheader.
5138 \expandafter\let\csname E#1\endcsname = \Edefun
5139 \edef\temp{\noexpand\domakedefun
5140 \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
5144 % \domakedefun \deffn \deffnx \deffnheader
5146 % Define \deffn and \deffnx, without parameters.
5147 % \deffnheader has to be defined explicitly.
5149 \def\domakedefun#1#2#3{%
5152 \parseargusing\activeparens{\printdefunline#3}%
5154 \def#2{\dodefunx#1}%
5158 %%% Untyped functions:
5160 % @deffn category name args
5161 \makedefun{deffn}{\deffngeneral{}}
5163 % @deffn category class name args
5164 \makedefun{defop}#1 {\defopon{#1\ \putwordon}}
5166 % \defopon {category on}class name args
5167 \def\defopon#1#2 {\deffngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
5169 % \deffngeneral {subind}category name args
5171 \def\deffngeneral#1#2 #3 #4\endheader{%
5172 % Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
5173 \dosubind{fn}{\code{#3}}{#1}%
5174 \defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%
5177 %%% Typed functions:
5179 % @deftypefn category type name args
5180 \makedefun{deftypefn}{\deftypefngeneral{}}
5182 % @deftypeop category class type name args
5183 \makedefun{deftypeop}#1 {\deftypeopon{#1\ \putwordon}}
5185 % \deftypeopon {category on}class type name args
5186 \def\deftypeopon#1#2 {\deftypefngeneral{\putwordon\ \code{#2}}{#1\ \code{#2}} }
5188 % \deftypefngeneral {subind}category type name args
5190 \def\deftypefngeneral#1#2 #3 #4 #5\endheader{%
5191 \dosubind{fn}{\code{#4}}{#1}%
5192 \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
5195 %%% Typed variables:
5197 % @deftypevr category type var args
5198 \makedefun{deftypevr}{\deftypecvgeneral{}}
5200 % @deftypecv category class type var args
5201 \makedefun{deftypecv}#1 {\deftypecvof{#1\ \putwordof}}
5203 % \deftypecvof {category of}class type var args
5204 \def\deftypecvof#1#2 {\deftypecvgeneral{\putwordof\ \code{#2}}{#1\ \code{#2}} }
5206 % \deftypecvgeneral {subind}category type var args
5208 \def\deftypecvgeneral#1#2 #3 #4 #5\endheader{%
5209 \dosubind{vr}{\code{#4}}{#1}%
5210 \defname{#2}{#3}{#4}\defunargs{#5\unskip}%
5213 %%% Untyped variables:
5215 % @defvr category var args
5216 \makedefun{defvr}#1 {\deftypevrheader{#1} {} }
5218 % @defcv category class var args
5219 \makedefun{defcv}#1 {\defcvof{#1\ \putwordof}}
5221 % \defcvof {category of}class var args
5222 \def\defcvof#1#2 {\deftypecvof{#1}#2 {} }
5225 % @deftp category name args
5226 \makedefun{deftp}#1 #2 #3\endheader{%
5227 \doind{tp}{\code{#2}}%
5228 \defname{#1}{}{#2}\defunargs{#3\unskip}%
5231 % Remaining @defun-like shortcuts:
5232 \makedefun{defun}{\deffnheader{\putwordDeffunc} }
5233 \makedefun{defmac}{\deffnheader{\putwordDefmac} }
5234 \makedefun{defspec}{\deffnheader{\putwordDefspec} }
5235 \makedefun{deftypefun}{\deftypefnheader{\putwordDeffunc} }
5236 \makedefun{defvar}{\defvrheader{\putwordDefvar} }
5237 \makedefun{defopt}{\defvrheader{\putwordDefopt} }
5238 \makedefun{deftypevar}{\deftypevrheader{\putwordDefvar} }
5239 \makedefun{defmethod}{\defopon\putwordMethodon}
5240 \makedefun{deftypemethod}{\deftypeopon\putwordMethodon}
5241 \makedefun{defivar}{\defcvof\putwordInstanceVariableof}
5242 \makedefun{deftypeivar}{\deftypecvof\putwordInstanceVariableof}
5244 % \defname, which formats the name of the @def (not the args).
5245 % #1 is the category, such as "Function".
5246 % #2 is the return type, if any.
5247 % #3 is the function name.
5249 % We are followed by (but not passed) the arguments, if any.
5251 \def\defname#1#2#3{%
5252 % Get the values of \leftskip and \rightskip as they were outside the @def...
5253 \advance\leftskip by -\defbodyindent
5255 % How we'll format the type name. Putting it in brackets helps
5256 % distinguish it from the body text that may end up on the next line
5259 \setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
5261 % Figure out line sizes for the paragraph shape.
5262 % The first line needs space for \box0; but if \rightskip is nonzero,
5263 % we need only space for the part of \box0 which exceeds it:
5264 \dimen0=\hsize \advance\dimen0 by -\wd0 \advance\dimen0 by \rightskip
5265 % The continuations:
5266 \dimen2=\hsize \advance\dimen2 by -\defargsindent
5267 % (plain.tex says that \dimen1 should be used only as global.)
5268 \parshape 2 0in \dimen0 \defargsindent \dimen2
5270 % Put the type name to the right margin.
5273 \hfil\box0 \kern-\hsize
5274 % \hsize has to be shortened this way:
5276 % Intentionally do not respect \rightskip, since we need the space.
5279 % Allow all lines to be underfull without complaint:
5280 \tolerance=10000 \hbadness=10000
5281 \exdentamount=\defbodyindent
5283 % defun fonts. We use typewriter by default (used to be bold) because:
5284 % . we're printing identifiers, they should be in tt in principle.
5285 % . in languages with many accents, such as Czech or French, it's
5286 % common to leave accents off identifiers. The result looks ok in
5287 % tt, but exceedingly strange in rm.
5288 % . we don't want -- and --- to be treated as ligatures.
5289 % . this still does not fix the ?` and !` ligatures, but so far no
5290 % one has made identifiers using them :).
5292 \def\temp{#2}% return value type
5293 \ifx\temp\empty\else \tclose{\temp} \fi
5294 #3% output function name
5296 {\rm\enskip}% hskip 0.5 em of \tenrm
5299 % arguments will be output next, if any.
5302 % Print arguments in slanted typewriter, prevent hyphenation at `-' chars.
5305 % use sl by default (not ttsl), inconsistently with using tt for the
5306 % name. This is because literal text is sometimes needed in the
5307 % argument list (groff manual), and ttsl and tt are not very
5310 \df \sl \hyphenchar\font=0
5311 % On the other hand, if an argument has two dashes (for instance), we
5312 % want a way to get ttsl. Let's try @var for that.
5315 \sl\hyphenchar\font=45
5318 % We want ()&[] to print specially on the defun line.
5321 \catcode`\(=\active \catcode`\)=\active
5322 \catcode`\[=\active \catcode`\]=\active
5326 % Make control sequences which act like normal parenthesis chars.
5327 \let\lparen = ( \let\rparen = )
5329 % Be sure that we always have a definition for `(', etc. For example,
5330 % if the fn name has parens in it, \boldbrax will not be in effect yet,
5331 % so TeX would otherwise complain about undefined control sequence.
5334 \global\let(=\lparen \global\let)=\rparen
5335 \global\let[=\lbrack \global\let]=\rbrack
5338 \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
5339 \gdef\magicamp{\let&=\amprm}
5342 \newcount\parencount
5344 % If we encounter &foo, then turn on ()-hacking afterwards
5346 \def\amprm#1 {\ampseentrue{\bf\ }}
5350 % At the first level, print parens in roman,
5351 % otherwise use the default font.
5352 \ifnum \parencount=1 \rm \fi
5354 % The \sf parens (in \boldbrax) actually are a little bolder than
5355 % the contained text. This is especially needed for [ and ] .
5359 \def\infirstlevel#1{%
5366 \def\bfafterword#1 {#1 \bf}
5369 \global\advance\parencount by 1
5371 \infirstlevel \bfafterword
5376 \global\advance\parencount by -1
5379 \newcount\brackcount
5381 \global\advance\brackcount by 1
5386 \global\advance\brackcount by -1
5389 \def\checkparencounts{%
5390 \ifnum\parencount=0 \else \badparencount \fi
5391 \ifnum\brackcount=0 \else \badbrackcount \fi
5393 \def\badparencount{%
5394 \errmessage{Unbalanced parentheses in @def}%
5395 \global\parencount=0
5397 \def\badbrackcount{%
5398 \errmessage{Unbalanced square braces in @def}%
5399 \global\brackcount=0
5406 % To do this right we need a feature of e-TeX, \scantokens,
5407 % which we arrange to emulate with a temporary file in ordinary TeX.
5408 \ifx\eTeXversion\undefined
5409 \newwrite\macscribble
5411 \toks0={#1\endinput}%
5412 \immediate\openout\macscribble=\jobname.tmp
5413 \immediate\write\macscribble{\the\toks0}%
5414 \immediate\closeout\macscribble
5422 \let\xeatspaces\eatspaces
5423 % Undo catcode changes of \startcontents and \doprintindex
5424 \catcode`\@=0 \catcode`\\=\other \escapechar=`\@
5428 % Append \endinput to make sure that TeX does not see the ending newline.
5430 % I've verified that it is necessary both for e-TeX and for ordinary TeX
5432 \scantokens{#1\endinput}%
5436 \newcount\paramno % Count of parameters
5437 \newtoks\macname % Macro name
5438 \newif\ifrecursive % Is it recursive?
5439 \def\macrolist{} % List of all defined macros in the form
5440 % \do\macro1\do\macro2...
5443 % This does \let #1 = #2, except with \csnames.
5445 \expandafter\expandafter
5447 \expandafter\expandafter
5449 \csname#2\endcsname}
5451 % Trim leading and trailing spaces off a string.
5452 % Concepts from aro-bend problem 15 (see CTAN).
5454 \gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }}
5455 \gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@}
5456 \gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @}
5458 \unbrace{\gdef\trim@@@ #1 } #2@{#1}
5461 % Trim a single trailing ^^M off a string.
5462 {\catcode`\^^M=\other \catcode`\Q=3%
5463 \gdef\eatcr #1{\eatcra #1Q^^MQ}%
5464 \gdef\eatcra#1^^MQ{\eatcrb#1Q}%
5465 \gdef\eatcrb#1Q#2Q{#1}%
5468 % Macro bodies are absorbed as an argument in a context where
5469 % all characters are catcode 10, 11 or 12, except \ which is active
5470 % (as in normal texinfo). It is necessary to change the definition of \.
5472 % It's necessary to have hard CRs when the macro is executed. This is
5473 % done by making ^^M (\endlinechar) catcode 12 when reading the macro
5474 % body, and then making it the \newlinechar in \scanmacro.
5476 \def\macrobodyctxt{%
5487 \catcode`\^^M=\other
5501 % \mbodybackslash is the definition of \ in @macro bodies.
5502 % It maps \foo\ => \csname macarg.foo\endcsname => #N
5503 % where N is the macro parameter number.
5504 % We define \csname macarg.\endcsname to be \realbackslash, so
5505 % \\ in macro replacement text gets you a backslash.
5507 {\catcode`@=0 @catcode`@\=@active
5508 @gdef@usembodybackslash{@let\=@mbodybackslash}
5509 @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}
5511 \expandafter\def\csname macarg.\endcsname{\realbackslash}
5513 \def\macro{\recursivefalse\parsearg\macroxxx}
5514 \def\rmacro{\recursivetrue\parsearg\macroxxx}
5517 \getargs{#1}% now \macname is the macname and \argl the arglist
5518 \ifx\argl\empty % no arguments
5521 \expandafter\parsemargdef \argl;%
5523 \if1\csname ismacro.\the\macname\endcsname
5524 \message{Warning: redefining \the\macname}%
5526 \expandafter\ifx\csname \the\macname\endcsname \relax
5527 \else \errmessage{Macro name \the\macname\space already defined}\fi
5528 \global\cslet{macsave.\the\macname}{\the\macname}%
5529 \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
5530 % Add the macroname to \macrolist
5531 \toks0 = \expandafter{\macrolist\do}%
5532 \xdef\macrolist{\the\toks0
5533 \expandafter\noexpand\csname\the\macname\endcsname}%
5535 \begingroup \macrobodyctxt
5536 \ifrecursive \expandafter\parsermacbody
5537 \else \expandafter\parsemacbody
5540 \parseargdef\unmacro{%
5541 \if1\csname ismacro.#1\endcsname
5542 \global\cslet{#1}{macsave.#1}%
5543 \global\expandafter\let \csname ismacro.#1\endcsname=0%
5544 % Remove the macro name from \macrolist:
5546 \expandafter\let\csname#1\endcsname \relax
5548 \xdef\macrolist{\macrolist}%
5551 \errmessage{Macro #1 not defined}%
5555 % Called by \do from \dounmacro on each macro. The idea is to omit any
5556 % macro definitions that have been changed to \relax.
5562 \noexpand\do \noexpand #1%
5566 % This makes use of the obscure feature that if the last token of a
5567 % <parameter list> is #, then the preceding argument is delimited by
5568 % an opening brace, and that opening brace is not consumed.
5569 \def\getargs#1{\getargsxxx#1{}}
5570 \def\getargsxxx#1#{\getmacname #1 \relax\getmacargs}
5571 \def\getmacname #1 #2\relax{\macname={#1}}
5572 \def\getmacargs#1{\def\argl{#1}}
5574 % Parse the optional {params} list. Set up \paramno and \paramlist
5575 % so \defmacro knows what to do. Define \macarg.blah for each blah
5576 % in the params list, to be ##N where N is the position in that list.
5577 % That gets used by \mbodybackslash (above).
5579 % We need to get `macro parameter char #' into several definitions.
5580 % The technique used is stolen from LaTeX: let \hash be something
5581 % unexpandable, insert that wherever you need a #, and then redefine
5582 % it to # just before using the token list produced.
5584 % The same technique is used to protect \eatspaces till just before
5585 % the macro is used.
5587 \def\parsemargdef#1;{\paramno=0\def\paramlist{}%
5588 \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}
5589 \def\parsemargdefxxx#1,{%
5590 \if#1;\let\next=\relax
5591 \else \let\next=\parsemargdefxxx
5592 \advance\paramno by 1%
5593 \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
5594 {\xeatspaces{\hash\the\paramno}}%
5595 \edef\paramlist{\paramlist\hash\the\paramno,}%
5598 % These two commands read recursive and nonrecursive macro bodies.
5599 % (They're different since rec and nonrec macros end differently.)
5601 \long\def\parsemacbody#1@end macro%
5602 {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
5603 \long\def\parsermacbody#1@end rmacro%
5604 {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}%
5606 % This defines the macro itself. There are six cases: recursive and
5607 % nonrecursive macros of zero, one, and many arguments.
5608 % Much magic with \expandafter here.
5609 % \xdef is used so that macro definitions will survive the file
5610 % they're defined in; @include reads the file inside a group.
5612 \let\hash=##% convert placeholders to macro parameter chars
5616 \expandafter\xdef\csname\the\macname\endcsname{%
5617 \noexpand\scanmacro{\temp}}%
5619 \expandafter\xdef\csname\the\macname\endcsname{%
5620 \bgroup\noexpand\macroargctxt
5621 \noexpand\braceorline
5622 \expandafter\noexpand\csname\the\macname xxx\endcsname}%
5623 \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
5624 \egroup\noexpand\scanmacro{\temp}}%
5626 \expandafter\xdef\csname\the\macname\endcsname{%
5627 \bgroup\noexpand\macroargctxt
5628 \noexpand\csname\the\macname xx\endcsname}%
5629 \expandafter\xdef\csname\the\macname xx\endcsname##1{%
5630 \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
5631 \expandafter\expandafter
5633 \expandafter\expandafter
5634 \csname\the\macname xxx\endcsname
5635 \paramlist{\egroup\noexpand\scanmacro{\temp}}%
5640 \expandafter\xdef\csname\the\macname\endcsname{%
5641 \noexpand\norecurse{\the\macname}%
5642 \noexpand\scanmacro{\temp}\egroup}%
5644 \expandafter\xdef\csname\the\macname\endcsname{%
5645 \bgroup\noexpand\macroargctxt
5646 \noexpand\braceorline
5647 \expandafter\noexpand\csname\the\macname xxx\endcsname}%
5648 \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
5650 \noexpand\norecurse{\the\macname}%
5651 \noexpand\scanmacro{\temp}\egroup}%
5653 \expandafter\xdef\csname\the\macname\endcsname{%
5654 \bgroup\noexpand\macroargctxt
5655 \expandafter\noexpand\csname\the\macname xx\endcsname}%
5656 \expandafter\xdef\csname\the\macname xx\endcsname##1{%
5657 \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
5658 \expandafter\expandafter
5660 \expandafter\expandafter
5661 \csname\the\macname xxx\endcsname
5664 \noexpand\norecurse{\the\macname}%
5665 \noexpand\scanmacro{\temp}\egroup}%
5669 \def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}}
5671 % \braceorline decides whether the next nonwhitespace character is a
5672 % {. If so it reads up to the closing }, if not, it reads the whole
5673 % line. Whatever was read is then fed to the next control sequence
5674 % as an argument (by \parsebrace or \parsearg)
5675 \def\braceorline#1{\let\next=#1\futurelet\nchar\braceorlinexxx}
5676 \def\braceorlinexxx{%
5677 \ifx\nchar\bgroup\else
5678 \expandafter\parsearg
5681 % We mant to disable all macros during \shipout so that they are not
5682 % expanded by \write.
5683 \def\turnoffmacros{\begingroup \def\do##1{\let\noexpand##1=\relax}%
5684 \edef\next{\macrolist}\expandafter\endgroup\next}
5688 % We need some trickery to remove the optional spaces around the equal
5689 % sign. Just make them active and then expand them all to nothing.
5690 \def\alias{\parseargusing\obeyspaces\aliasxxx}
5691 \def\aliasxxx #1{\aliasyyy#1\relax}
5692 \def\aliasyyy #1=#2\relax{%
5694 \expandafter\let\obeyedspace=\empty
5695 \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
5701 \message{cross references,}
5705 \newif\ifhavexrefs % True if xref values are known.
5706 \newif\ifwarnedxrefs % True if we warned once that they aren't known.
5708 % @inforef is relatively simple.
5709 \def\inforef #1{\inforefzzz #1,,,,**}
5710 \def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
5711 node \samp{\ignorespaces#1{}}}
5713 % @node's only job in TeX is to define \lastnode, which is used in
5715 \parseargdef\node{\checkenv{}\nodexxx #1,\finishnodeparse}
5716 \def\nodexxx#1,#2\finishnodeparse{\gdef\lastnode{#1}}
5718 \let\lastnode=\empty
5720 % Write a cross-reference definition for the current node. #1 is the
5721 % type (Ynumbered, Yappendix, Ynothing).
5724 \ifx\lastnode\empty\else
5725 \setref{\lastnode}{#1}%
5726 \global\let\lastnode=\empty
5730 % @anchor{NAME} -- define xref target at arbitrary point.
5732 \newcount\savesfregister
5734 \def\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi}
5735 \def\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi}
5736 \def\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces}
5738 % \setref{NAME}{SNT} defines a cross-reference point NAME (a node or an
5739 % anchor), which consists of three parts:
5740 % 1) NAME-title - the current sectioning name taken from \thissection,
5741 % or the anchor name.
5742 % 2) NAME-snt - section number and type, passed as the SNT arg, or
5743 % empty for anchors.
5744 % 3) NAME-pg - the page number.
5746 % This is called from \donoderef, \anchor, and \dofloat. In the case of
5747 % floats, there is an additional part, which is not written here:
5748 % 4) NAME-lof - the text as it should appear in a @listoffloats.
5754 \atdummies % preserve commands, but don't expand them
5757 \edef\writexrdef##1##2{%
5758 \write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
5759 ##1}{##2}}% these are parameters of \writexrdef
5761 \toks0 = \expandafter{\thissection}%
5762 \immediate \writexrdef{title}{\the\toks0 }%
5763 \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
5764 \writexrdef{pg}{\folio}% will be written later, during \shipout
5769 % @xref, @pxref, and @ref generate cross-references. For \xrefX, #1 is
5770 % the node name, #2 the name of the Info cross-reference, #3 the printed
5771 % node name, #4 the name of the Info file, #5 the name of the printed
5772 % manual. All but the node name can be omitted.
5774 \def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
5775 \def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
5776 \def\ref#1{\xrefX[#1,,,,,,,]}
5777 \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
5779 \def\printedmanual{\ignorespaces #5}%
5780 \def\printedrefname{\ignorespaces #3}%
5781 \setbox1=\hbox{\printedmanual\unskip}%
5782 \setbox0=\hbox{\printedrefname\unskip}%
5784 % No printed node name was explicitly given.
5785 \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
5786 % Use the node name inside the square brackets.
5787 \def\printedrefname{\ignorespaces #1}%
5789 % Use the actual chapter/section title appear inside
5790 % the square brackets. Use the real section title if we have it.
5792 % It is in another manual, so we don't have it.
5793 \def\printedrefname{\ignorespaces #1}%
5796 % We know the real title if we have the xref values.
5797 \def\printedrefname{\refx{#1-title}{}}%
5799 % Otherwise just copy the Info node name.
5800 \def\printedrefname{\ignorespaces #1}%
5806 % Make link in pdf output.
5810 {\turnoffactive \otherbackslash
5811 \ifnum\filenamelength>0
5812 \startlink attr{/Border [0 0 0]}%
5813 goto file{\the\filename.pdf} name{#1}%
5815 \startlink attr{/Border [0 0 0]}%
5816 goto name{\pdfmkpgn{#1}}%
5822 % Float references are printed completely differently: "Figure 1.2"
5823 % instead of "[somenode], p.3". We distinguish them by the
5824 % LABEL-title being set to a magic string.
5826 % Have to otherify everything special to allow the \csname to
5827 % include an _ in the xref name, etc.
5831 \expandafter\global\expandafter\let\expandafter\Xthisreftitle
5832 \csname XR#1-title\endcsname
5834 \iffloat\Xthisreftitle
5835 % If the user specified the print name (third arg) to the ref,
5836 % print it instead of our usual "Figure 1.2".
5843 % if the user also gave the printed manual name (fifth arg), append
5846 \space \putwordin{} \cite{\printedmanual}%
5849 % node/anchor (non-float) references.
5851 % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
5852 % insert empty discretionaries after hyphens, which means that it will
5853 % not find a line break at a hyphen in a node names. Since some manuals
5854 % are best written with fairly long node names, containing hyphens, this
5855 % is a loss. Therefore, we give the text of the node name again, so it
5856 % is as if TeX is seeing it for the first time.
5858 \putwordsection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}%
5860 % _ (for example) has to be the character _ for the purposes of the
5861 % control sequence corresponding to the node, but it has to expand
5862 % into the usual \leavevmode...\vrule stuff for purposes of
5863 % printing. So we \turnoffactive for the \refx-snt, back on for the
5864 % printing, back off for the \refx-pg.
5865 {\turnoffactive \otherbackslash
5866 % Only output a following space if the -snt ref is nonempty; for
5867 % @unnumbered and @anchor, it won't be.
5868 \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
5869 \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
5871 % output the `[mynode]' via a macro so it can be overridden.
5872 \xrefprintnodename\printedrefname
5874 % But we always want a comma and a space:
5877 % output the `page 3'.
5878 \turnoffactive \otherbackslash \putwordpage\tie\refx{#1-pg}{}%
5884 % This macro is called from \xrefX for the `[nodename]' part of xref
5885 % output. It's a separate macro only so it can be changed more easily,
5886 % since square brackets don't work well in some documents. Particularly
5887 % one that Bob is working on :).
5889 \def\xrefprintnodename#1{[#1]}
5891 % Things referred to by \setref.
5897 \putwordChapter@tie \the\chapno
5898 \else \ifnum\subsecno=0
5899 \putwordSection@tie \the\chapno.\the\secno
5900 \else \ifnum\subsubsecno=0
5901 \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
5903 \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
5908 \putwordAppendix@tie @char\the\appendixno{}%
5909 \else \ifnum\subsecno=0
5910 \putwordSection@tie @char\the\appendixno.\the\secno
5911 \else \ifnum\subsubsecno=0
5912 \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
5915 @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
5919 % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
5920 % If its value is nonempty, SUFFIX is output afterward.
5926 \expandafter\global\expandafter\let\expandafter\thisrefX
5927 \csname XR#1\endcsname
5930 % If not defined, say something at least.
5931 \angleleft un\-de\-fined\angleright
5934 \message{\linenumber Undefined cross reference `#1'.}%
5937 \global\warnedxrefstrue
5938 \message{Cross reference values unknown; you must run TeX again.}%
5943 % It's defined, so just use it.
5946 #2% Output the suffix in any case.
5949 % This is the macro invoked by entries in the aux file. Usually it's
5950 % just a \def (we prepend XR to the control sequence name to avoid
5951 % collisions). But if this is a float type, we have more work to do.
5954 \expandafter\gdef\csname XR#1\endcsname{#2}% remember this xref value.
5956 % Was that xref control sequence that we just defined for a float?
5957 \expandafter\iffloat\csname XR#1\endcsname
5958 % it was a float, and we have the (safe) float type in \iffloattype.
5959 \expandafter\let\expandafter\floatlist
5960 \csname floatlist\iffloattype\endcsname
5962 % Is this the first time we've seen this float type?
5963 \expandafter\ifx\floatlist\relax
5964 \toks0 = {\do}% yes, so just \do
5966 % had it before, so preserve previous elements in list.
5967 \toks0 = \expandafter{\floatlist\do}%
5970 % Remember this xref in the control sequence \floatlistFLOATTYPE,
5971 % for later use in \listoffloats.
5972 \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0{#1}}%
5976 % Read the last existing aux file, if any. No error if none exists.
5979 \openin 1 \jobname.aux
5982 \global\havexrefstrue
5987 \def\readauxfile{\begingroup
5988 \catcode`\^^@=\other
5989 \catcode`\^^A=\other
5990 \catcode`\^^B=\other
5991 \catcode`\^^C=\other
5992 \catcode`\^^D=\other
5993 \catcode`\^^E=\other
5994 \catcode`\^^F=\other
5995 \catcode`\^^G=\other
5996 \catcode`\^^H=\other
5997 \catcode`\^^K=\other
5998 \catcode`\^^L=\other
5999 \catcode`\^^N=\other
6000 \catcode`\^^P=\other
6001 \catcode`\^^Q=\other
6002 \catcode`\^^R=\other
6003 \catcode`\^^S=\other
6004 \catcode`\^^T=\other
6005 \catcode`\^^U=\other
6006 \catcode`\^^V=\other
6007 \catcode`\^^W=\other
6008 \catcode`\^^X=\other
6009 \catcode`\^^Z=\other
6010 \catcode`\^^[=\other
6011 \catcode`\^^\=\other
6012 \catcode`\^^]=\other
6013 \catcode`\^^^=\other
6014 \catcode`\^^_=\other
6015 % It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
6016 % in xref tags, i.e., node names. But since ^^e4 notation isn't
6017 % supported in the main text, it doesn't seem desirable. Furthermore,
6018 % that is not enough: for node names that actually contain a ^
6019 % character, we would end up writing a line like this: 'xrdef {'hat
6020 % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
6021 % argument, and \hat is not an expandable control sequence. It could
6022 % all be worked out, but why? Either we support ^^ or we don't.
6024 % The other change necessary for this was to define \auxhat:
6025 % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
6026 % and then to call \auxhat in \setq.
6030 % Special characters. Should be turned off anyway, but...
6043 \catcode`+=\other % avoid \+ for paranoia even though we've turned it off
6045 % This is to support \ in node names and titles, since the \
6046 % characters end up in a \csname. It's easier than
6047 % leaving it active and making its active definition an actual \
6048 % character. What I don't understand is why it works in the *value*
6049 % of the xrdef. Seems like it should be a catcode12 \, and that
6050 % should not typeset properly. But it works, so I'm moving on for
6051 % now. --karl, 15jan04.
6054 % Make the characters 128-255 be printing characters.
6058 \catcode\count 1=\other
6059 \advance\count 1 by 1
6060 \ifnum \count 1<256 \loop \fi
6064 % @ is our escape character in .aux files, and we need braces.
6073 \message{insertions,}
6074 % including footnotes.
6076 \newcount \footnoteno
6078 % The trailing space in the following definition for supereject is
6079 % vital for proper filling; pages come out unaligned when you do a
6080 % pagealignmacro call if that space before the closing brace is
6081 % removed. (Generally, numeric constants should always be followed by a
6082 % space to prevent strange expansion errors.)
6083 \def\supereject{\par\penalty -20000\footnoteno =0 }
6085 % @footnotestyle is meaningful for info output only.
6086 \let\footnotestyle=\comment
6090 % Auto-number footnotes. Otherwise like plain.
6092 \let\indent=\ptexindent
6093 \let\noindent=\ptexnoindent
6094 \global\advance\footnoteno by \@ne
6095 \edef\thisfootno{$^{\the\footnoteno}$}%
6097 % In case the footnote comes at the end of a sentence, preserve the
6098 % extra spacing after we do the footnote number.
6100 \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
6102 % Remove inadvertent blank space before typesetting the footnote number.
6108 % Don't bother with the trickery in plain.tex to not require the
6109 % footnote text as a parameter. Our footnotes don't need to be so general.
6111 % Oh yes, they do; otherwise, @ifset (and anything else that uses
6112 % \parseargline) fails inside footnotes because the tokens are fixed when
6113 % the footnote is read. --karl, 16nov96.
6116 \insert\footins\bgroup
6117 % We want to typeset this text as a normal paragraph, even if the
6118 % footnote reference occurs in (for example) a display environment.
6119 % So reset some parameters.
6121 \interlinepenalty\interfootnotelinepenalty
6122 \splittopskip\ht\strutbox % top baseline for broken footnotes
6123 \splitmaxdepth\dp\strutbox
6124 \floatingpenalty\@MM
6129 \parindent\defaultparindent
6133 % Because we use hanging indentation in footnotes, a @noindent appears
6134 % to exdent this text, so make it be a no-op. makeinfo does not use
6135 % hanging indentation so @noindent can still be needed within footnote
6136 % text after an @example or the like (not that this is good style).
6137 \let\noindent = \relax
6139 % Hang the footnote text off the number. Use \everypar in case the
6140 % footnote extends for more than one paragraph.
6141 \everypar = {\hang}%
6142 \textindent{\thisfootno}%
6144 % Don't crash into the line above the footnote text. Since this
6145 % expands into a box, it must come within the paragraph, lest it
6146 % provide a place where TeX can split the footnote.
6148 \futurelet\next\fo@t
6150 }%end \catcode `\@=11
6152 % In case a @footnote appears in a vbox, save the footnote text and create
6153 % the real \insert just after the vbox finished. Otherwise, the insertion
6155 % Similarily, if a @footnote appears inside an alignment, save the footnote
6156 % text to a box and make the \insert when a row of the table is finished.
6157 % And the same can be done for other insert classes. --kasal, 16nov03.
6159 % Replace the \insert primitive by a cheating macro.
6160 % Deeper inside, just make sure that the saved insertions are not spilled
6163 \def\startsavinginserts{%
6164 \ifx \insert\ptexinsert
6165 \let\insert\saveinsert
6167 \let\checkinserts\relax
6171 % This \insert replacement works for both \insert\footins{foo} and
6172 % \insert\footins\bgroup foo\egroup, but it doesn't work for \insert27{foo}.
6175 \edef\next{\noexpand\savetobox \makeSAVEname#1}%
6176 \afterassignment\next
6177 % swallow the left brace
6180 \def\makeSAVEname#1{\makecsname{SAVE\expandafter\gobble\string#1}}
6181 \def\savetobox#1{\global\setbox#1 = \vbox\bgroup \unvbox#1}
6183 \def\checksaveins#1{\ifvoid#1\else \placesaveins#1\fi}
6185 \def\placesaveins#1{%
6186 \ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
6190 % eat @SAVE -- beware, all of them have catcode \other:
6192 \def\dospecials{\do S\do A\do V\do E} \uncatcodespecials % ;-)
6193 \gdef\gobblesave @SAVE{}
6197 \def\newsaveins #1{%
6198 \edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
6201 \def\newsaveinsX #1{%
6202 \csname newbox\endcsname #1%
6203 \expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
6208 \let\checkinserts\empty
6213 % @image. We use the macros from epsf.tex to support this.
6214 % If epsf.tex is not installed and @image is used, we complain.
6216 % Check for and read epsf.tex up front. If we read it only at @image
6217 % time, we might be inside a group, and then its definitions would get
6218 % undone and the next image would fail.
6219 \openin 1 = epsf.tex
6221 % Do not bother showing banner with epsf.tex v2.7k (available in
6222 % doc/epsf.tex and on ctan).
6223 \def\epsfannounce{\toks0 = }%
6228 % We will only complain once about lack of epsf.tex.
6229 \newif\ifwarnednoepsf
6230 \newhelp\noepsfhelp{epsf.tex must be installed for images to
6231 work. It is also included in the Texinfo distribution, or you can get
6232 it from ftp://tug.org/tex/epsf.tex.}
6235 \ifx\epsfbox\undefined
6236 \ifwarnednoepsf \else
6237 \errhelp = \noepsfhelp
6238 \errmessage{epsf.tex not found, images will be ignored}%
6239 \global\warnednoepsftrue
6242 \imagexxx #1,,,,,\finish
6246 % Arguments to @image:
6247 % #1 is (mandatory) image filename; we tack on .eps extension.
6248 % #2 is (optional) width, #3 is (optional) height.
6249 % #4 is (ignored optional) html alt text.
6250 % #5 is (ignored optional) extension.
6251 % #6 is just the usual extra ignored arg for parsing this stuff.
6253 \def\imagexxx#1,#2,#3,#4,#5,#6\finish{\begingroup
6254 \catcode`\^^M = 5 % in case we're inside an example
6255 \normalturnoffactive % allow _ et al. in names
6256 % If the image is by itself, center it.
6260 % Usually we'll have text after the image which will insert
6261 % \parskip glue, so insert it here too to equalize the space
6263 \nobreak\vskip\parskip
6270 \dopdfimage{#1}{#2}{#3}%
6272 % \epsfbox itself resets \epsf?size at each figure.
6273 \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
6274 \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
6278 \ifimagevmode \hss \egroup \bigbreak \fi % space after the image
6282 % @float FLOATTYPE,LOC ... @end float for displayed figures, tables, etc.
6283 % We don't actually implement floating yet, we just plop the float "here".
6284 % But it seemed the best name for the future.
6286 \envparseargdef\float{\dofloat #1,,,\finish}
6288 % #1 is the optional FLOATTYPE, the text label for this float, typically
6289 % "Figure", "Table", "Example", etc. Can't contain commas. If omitted,
6290 % this float will not be numbered and cannot be referred to.
6292 % #2 is the optional xref label. Also must be present for the float to
6295 % #3 is the optional positioning argument; for now, it is ignored. It
6296 % will somehow specify the positions allowed to float to (here, top, bottom).
6298 % We keep a separate counter for each FLOATTYPE, which we reset at each
6299 % chapter-level command.
6300 \let\resetallfloatnos=\empty
6302 \def\dofloat#1,#2,#3,#4\finish{%
6303 \let\thiscaption=\empty
6304 \let\thisshortcaption=\empty
6306 % don't lose footnotes inside @float.
6311 \def\floatlabel{#2}%
6312 \def\floatloc{#3}% we do nothing with this yet.
6314 \ifx\floattype\empty
6315 \let\safefloattype=\empty
6318 % the floattype might have accents or other special characters,
6319 % but we need to use it in a control sequence name.
6322 \xdef\safefloattype{\floattype}%
6326 % If label is given but no type, we handle that as the empty type.
6327 \ifx\floatlabel\empty \else
6328 % We want each FLOATTYPE to be numbered separately (Figure 1,
6329 % Table 1, Figure 2, ...). (And if no label, no number.)
6331 \expandafter\getfloatno\csname\safefloattype floatno\endcsname
6332 \global\advance\floatno by 1
6335 % This magic value for \thissection is output by \setref as the
6336 % XREFLABEL-title value. \xrefX uses it to distinguish float
6337 % labels (which have a completely different output format) from
6338 % node and anchor labels. And \xrdef uses it to construct the
6341 \edef\thissection{\floatmagic=\safefloattype}%
6342 \setref{\floatlabel}{Yfloat}%
6346 % start with \parskip glue, I guess.
6349 % Don't suppress indentation if a float happens to start a section.
6350 \restorefirstparagraphindent
6353 % we have these possibilities:
6354 % @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap
6355 % @float Foo,lbl & no caption: Foo 1.1
6356 % @float Foo & @caption{Cap}: Foo: Cap
6357 % @float Foo & no caption: Foo
6358 % @float ,lbl & Caption{Cap}: 1.1: Cap
6359 % @float ,lbl & no caption: 1.1
6360 % @float & @caption{Cap}: Cap
6361 % @float & no caption:
6364 \let\floatident = \empty
6366 % In all cases, if we have a float type, it comes first.
6367 \ifx\floattype\empty \else \def\floatident{\floattype}\fi
6369 % If we have an xref label, the number comes next.
6370 \ifx\floatlabel\empty \else
6371 \ifx\floattype\empty \else % if also had float type, need tie first.
6372 \appendtomacro\floatident{\tie}%
6375 \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
6378 % Start the printed caption with what we've constructed in
6379 % \floatident, but keep it separate; we need \floatident again.
6380 \let\captionline = \floatident
6382 \ifx\thiscaption\empty \else
6383 \ifx\floatident\empty \else
6384 \appendtomacro\captionline{: }% had ident, so need a colon between
6388 \appendtomacro\captionline\thiscaption
6391 % If we have anything to print, print it, with space before.
6392 % Eventually this needs to become an \insert.
6393 \ifx\captionline\empty \else
6398 % If have an xref label, write the list of floats info. Do this
6399 % after the caption, to avoid chance of it being a breakpoint.
6400 \ifx\floatlabel\empty \else
6401 % Write the text that goes in the lof to the aux file as
6402 % \floatlabel-lof. Besides \floatident, we include the short
6403 % caption if specified, else the full caption if specified, else nothing.
6405 \atdummies \turnoffactive \otherbackslash
6406 \immediate\write\auxfile{@xrdef{\floatlabel-lof}{%
6408 \ifx\thisshortcaption\empty
6409 \ifx\thiscaption\empty \else : \thiscaption \fi
6417 % Space below caption, if we printed anything.
6418 \ifx\printedsomething\empty \else \vskip\parskip \fi
6419 \egroup % end of \vtop
6423 % Append the tokens #2 to the macro #1, not expanding either.
6425 \def\appendtomacro#1#2{%
6426 \toksA = \expandafter{#1}%
6428 \edef#1{\the\toksA \the\toksB}%
6431 % @caption, @shortcaption are easy.
6433 \def\caption#1{\checkenv\float \def\thiscaption{#1}}
6434 \def\shortcaption#1{\checkenv\float \def\thisshortcaption{#1}}
6436 % The parameter is the control sequence identifying the counter we are
6437 % going to use. Create it if it doesn't exist and assign it to \floatno.
6440 % Haven't seen this figure type before.
6441 \csname newcount\endcsname #1%
6443 % Remember to reset this floatno at the next chap.
6444 \expandafter\gdef\expandafter\resetallfloatnos
6445 \expandafter{\resetallfloatnos #1=0 }%
6450 % \setref calls this to get the XREFLABEL-snt value. We want an @xref
6451 % to the FLOATLABEL to expand to "Figure 3.1". We call \setref when we
6452 % first read the @float command.
6454 \def\Yfloat{\floattype@tie \chaplevelprefix\the\floatno}%
6456 % Magic string used for the XREFLABEL-title value, so \xrefX can
6457 % distinguish floats from other xref types.
6458 \def\floatmagic{!!float!!}
6460 % #1 is the control sequence we are passed; we expand into a conditional
6461 % which is true if #1 represents a float ref. That is, the magic
6462 % \thissection value which we \setref above.
6464 \def\iffloat#1{\expandafter\doiffloat#1==\finish}
6466 % #1 is (maybe) the \floatmagic string. If so, #2 will be the
6467 % (safe) float type for this float. We set \iffloattype to #2.
6469 \def\doiffloat#1=#2=#3\finish{%
6471 \def\iffloattype{#2}%
6472 \ifx\temp\floatmagic
6475 % @listoffloats FLOATTYPE - print a list of floats like a table of contents.
6477 \parseargdef\listoffloats{%
6478 \def\floattype{#1}% floattype
6480 % the floattype might have accents or other special characters,
6481 % but we need to use it in a control sequence name.
6484 \xdef\safefloattype{\floattype}%
6487 % \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
6488 \expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
6490 % if the user said @listoffloats foo but never @float foo.
6491 \message{\linenumber No `\safefloattype' floats to list.}%
6495 \leftskip=\tocindent % indent these entries like a toc
6496 \let\do=\listoffloatsdo
6497 \csname floatlist\safefloattype\endcsname
6502 % This is called on each entry in a list of floats. We're passed the
6503 % xref label, in the form LABEL-title, which is how we save it in the
6504 % aux file. We strip off the -title and look up \XRLABEL-lof, which
6505 % has the text we're supposed to typeset here.
6507 % Figures without xref labels will not be included in the list (since
6508 % they won't appear in the aux file).
6510 \def\listoffloatsdo#1{\listoffloatsdoentry#1\finish}
6511 \def\listoffloatsdoentry#1-title\finish{%
6512 % use the same \entry we use for the TOC.
6513 \entry{\csname XR#1-lof\endcsname}{\csname XR#1-pg\endcsname}%
6516 \message{localization,}
6519 % @documentlanguage is usually given very early, just after
6520 % @setfilename. If done too late, it may not override everything
6521 % properly. Single argument is the language abbreviation.
6522 % It would be nice if we could set up a hyphenation file here.
6524 \parseargdef\documentlanguage{%
6525 \tex % read txi-??.tex file in plain TeX.
6526 % Read the file if it exists.
6527 \openin 1 txi-#1.tex
6529 \errhelp = \nolanghelp
6530 \errmessage{Cannot read language file txi-#1.tex}%
6537 \newhelp\nolanghelp{The given language definition file cannot be found or
6538 is empty. Maybe you need to install it? In the current directory
6539 should work if nowhere else does.}
6542 % @documentencoding should change something in TeX eventually, most
6543 % likely, but for now just recognize it.
6544 \let\documentencoding = \comment
6547 % Page size parameters.
6549 \newdimen\defaultparindent \defaultparindent = 15pt
6551 \chapheadingskip = 15pt plus 4pt minus 2pt
6552 \secheadingskip = 12pt plus 3pt minus 2pt
6553 \subsecheadingskip = 9pt plus 2pt minus 2pt
6555 % Prevent underfull vbox error messages.
6558 % Don't be so finicky about underfull hboxes, either.
6561 % Following George Bush, just get rid of widows and orphans.
6565 % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
6566 % using an old version of TeX, don't do anything. We want the amount of
6567 % stretch added to depend on the line length, hence the dependence on
6568 % \hsize. We call this whenever the paper size is set.
6570 \def\setemergencystretch{%
6571 \ifx\emergencystretch\thisisundefined
6572 % Allow us to assign to \emergencystretch anyway.
6573 \def\emergencystretch{\dimen0}%
6575 \emergencystretch = .15\hsize
6579 % Parameters in order: 1) textheight; 2) textwidth; 3) voffset;
6580 % 4) hoffset; 5) binding offset; 6) topskip; 7) physical page height; 8)
6581 % physical page width.
6583 % We also call \setleading{\textleading}, so the caller should define
6584 % \textleading. The caller should also set \parskip.
6586 \def\internalpagesizes#1#2#3#4#5#6#7#8{%
6589 \splittopskip = \topskip
6592 \advance\vsize by \topskip
6593 \outervsize = \vsize
6594 \advance\outervsize by 2\topandbottommargin
6595 \pageheight = \vsize
6598 \outerhsize = \hsize
6599 \advance\outerhsize by 0.5in
6602 \normaloffset = #4\relax
6603 \bindingoffset = #5\relax
6606 \pdfpageheight #7\relax
6607 \pdfpagewidth #8\relax
6610 \setleading{\textleading}
6612 \parindent = \defaultparindent
6613 \setemergencystretch
6616 % @letterpaper (the default).
6617 \def\letterpaper{{\globaldefs = 1
6618 \parskip = 3pt plus 2pt minus 1pt
6619 \textleading = 13.2pt
6621 % If page is nothing but text, make it come out even.
6622 \internalpagesizes{46\baselineskip}{6in}%
6624 {\bindingoffset}{36pt}%
6628 % Use @smallbook to reset parameters for 7x9.5 (or so) format.
6629 \def\smallbook{{\globaldefs = 1
6630 \parskip = 2pt plus 1pt
6633 \internalpagesizes{7.5in}{5in}%
6635 {\bindingoffset}{16pt}%
6638 \lispnarrowing = 0.3in
6641 \contentsrightmargin = 0pt
6642 \defbodyindent = .5cm
6645 % Use @afourpaper to print on European A4 paper.
6646 \def\afourpaper{{\globaldefs = 1
6647 \parskip = 3pt plus 2pt minus 1pt
6648 \textleading = 13.2pt
6650 % Double-side printing via postscript on Laserjet 4050
6651 % prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
6652 % To change the settings for a different printer or situation, adjust
6653 % \normaloffset until the front-side and back-side texts align. Then
6654 % do the same for \bindingoffset. You can set these for testing in
6655 % your texinfo source file like this:
6657 % \global\normaloffset = -6mm
6658 % \global\bindingoffset = 10mm
6660 \internalpagesizes{51\baselineskip}{160mm}
6661 {\voffset}{\hoffset}%
6662 {\bindingoffset}{44pt}%
6667 \contentsrightmargin = 0pt
6668 \defbodyindent = 5mm
6671 % Use @afivepaper to print on European A5 paper.
6672 % From romildo@urano.iceb.ufop.br, 2 July 2000.
6673 % He also recommends making @example and @lisp be small.
6674 \def\afivepaper{{\globaldefs = 1
6675 \parskip = 2pt plus 1pt minus 0.1pt
6676 \textleading = 12.5pt
6678 \internalpagesizes{160mm}{120mm}%
6679 {\voffset}{\hoffset}%
6680 {\bindingoffset}{8pt}%
6683 \lispnarrowing = 0.2in
6686 \contentsrightmargin = 0pt
6687 \defbodyindent = 2mm
6691 % A specific text layout, 24x15cm overall, intended for A4 paper.
6692 \def\afourlatex{{\globaldefs = 1
6694 \internalpagesizes{237mm}{150mm}%
6696 {\bindingoffset}{7mm}%
6699 % Must explicitly reset to 0 because we call \afourpaper.
6703 % Use @afourwide to print on A4 paper in landscape format.
6704 \def\afourwide{{\globaldefs = 1
6706 \internalpagesizes{241mm}{165mm}%
6707 {\voffset}{-2.95mm}%
6708 {\bindingoffset}{7mm}%
6713 % @pagesizes TEXTHEIGHT[,TEXTWIDTH]
6714 % Perhaps we should allow setting the margins, \topskip, \parskip,
6715 % and/or leading, also. Or perhaps we should compute them somehow.
6717 \parseargdef\pagesizes{\pagesizesyyy #1,,\finish}
6718 \def\pagesizesyyy#1,#2,#3\finish{{%
6719 \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
6722 \parskip = 3pt plus 2pt minus 1pt
6723 \setleading{\textleading}%
6726 \advance\dimen0 by \voffset
6729 \advance\dimen2 by \normaloffset
6731 \internalpagesizes{#1}{\hsize}%
6732 {\voffset}{\normaloffset}%
6733 {\bindingoffset}{44pt}%
6737 % Set default to letter.
6742 \message{and turning on texinfo input format.}
6744 % Define macros to output various characters with catcode for normal text.
6754 \def\normaldoublequote{"}
6757 \def\normalunderscore{_}
6758 \def\normalverticalbar{|}
6760 \def\normalgreater{>}
6762 \def\normaldollar{$}%$ font-lock fix
6764 % This macro is used to make a character print one way in \tt
6765 % (where it can probably be output as-is), and another way in other fonts,
6766 % where something hairier probably needs to be done.
6768 % #1 is what to print if we are indeed using \tt; #2 is what to print
6769 % otherwise. Since all the Computer Modern typewriter fonts have zero
6770 % interword stretch (and shrink), and it is reasonable to expect all
6771 % typewriter fonts to have this, we can check that font parameter.
6773 \def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi}
6775 % Same as above, but check for italic font. Actually this also catches
6776 % non-italic slanted fonts since it is impossible to distinguish them from
6777 % italic fonts. But since this is only used by $ and it uses \sl anyway
6778 % this is not a problem.
6779 \def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi}
6781 % Turn off all special characters except @
6782 % (and those which the user can use as if they were ordinary).
6783 % Most of these we simply print from the \tt font, but for some, we can
6784 % use math or other variants that look better in normal text.
6787 \def\activedoublequote{{\tt\char34}}
6788 \let"=\activedoublequote
6790 \def~{{\tt\char126}}
6796 \def_{\ifusingtt\normalunderscore\_}
6797 % Subroutine for the previous macro.
6798 \def\_{\leavevmode \kern.07em \vbox{\hrule width.3em height.1ex}\kern .07em }
6801 \def|{{\tt\char124}}
6809 \def+{{\tt \char 43}}
6811 \def${\ifusingit{{\sl\$}}\normaldollar}%$ font-lock fix
6813 % If a .fmt file is being used, characters that might appear in a file
6814 % name cannot be active until we have parsed the command line.
6815 % So turn them off again, and have \everyjob (or @setfilename) turn them on.
6816 % \otherifyactive is called near the end of this file.
6817 \def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
6821 % \backslashcurfont outputs one backslash character in current font,
6823 \global\chardef\backslashcurfont=`\\
6824 \global\let\rawbackslashxx=\backslashcurfont % let existing .??s files work
6826 % \rawbackslash defines an active \ to do \backslashcurfont.
6827 % \otherbackslash defines an active \ to be a literal `\' character with
6829 {\catcode`\\=\active
6830 @gdef@rawbackslash{@let\=@backslashcurfont}
6831 @gdef@otherbackslash{@let\=@realbackslash}
6834 % \realbackslash is an actual character `\' with catcode other.
6835 {\catcode`\\=\other @gdef@realbackslash{\}}
6837 % \normalbackslash outputs one backslash in fixed width font.
6838 \def\normalbackslash{{\tt\backslashcurfont}}
6842 % Used sometimes to turn off (effectively) the active characters
6843 % even after parsing them.
6844 @def@turnoffactive{%
6845 @let"=@normaldoublequote
6846 @let\=@realbackslash
6849 @let_=@normalunderscore
6850 @let|=@normalverticalbar
6852 @let>=@normalgreater
6854 @let$=@normaldollar %$ font-lock fix
6858 % Same as @turnoffactive except outputs \ as {\tt\char`\\} instead of
6859 % the literal character `\'. (Thus, \ is not expandable when this is in
6862 @def@normalturnoffactive{@turnoffactive @let\=@normalbackslash}
6864 % Make _ and + \other characters, temporarily.
6865 % This is canceled by @fixbackslash.
6868 % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
6869 % That is what \eatinput is for; after that, the `\' should revert to printing
6872 @gdef@eatinput input texinfo{@fixbackslash}
6873 @global@let\ = @eatinput
6875 % On the other hand, perhaps the file did not have a `\input texinfo'. Then
6876 % the first `\{ in the file would cause an error. This macro tries to fix
6877 % that, assuming it is called before the first `\' could plausibly occur.
6878 % Also back turn on active characters that might appear in the input
6879 % file name, in case not using a pre-dumped format.
6881 @gdef@fixbackslash{%
6882 @ifx\@eatinput @let\ = @normalbackslash @fi
6887 % Say @foo, not \foo, in error messages.
6890 % These look ok in all fonts, so just make them not special.
6891 @catcode`@& = @other
6892 @catcode`@# = @other
6893 @catcode`@% = @other
6897 @c eval: (add-hook 'write-file-hooks 'time-stamp)
6898 @c page-delimiter: "^\\\\message"
6899 @c time-stamp-start: "def\\\\texinfoversion{"
6900 @c time-stamp-format: "%:y-%02m-%02d.%02H"
6901 @c time-stamp-end: "}"
6907 arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115