% texinfo.tex – TeX macros to handle Texinfo files. % % Load plain if necessary, i.e., if running under initex. expandafterifxcsname fmtnameendcsnamerelaxinput plainfi % deftexinfoversion{2005-07-05.19} % % Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995, % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software % Foundation, Inc. % % This texinfo.tex file is free software; you can redistribute it and/or % modify it under the terms of the GNU General Public License as % published by the Free Software Foundation; either version 2, or (at % your option) any later version. % % This texinfo.tex file is distributed in the hope that it will be % useful, but WITHOUT ANY WARRANTY; without even the implied warranty % of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU % General Public License for more details. % % You should have received a copy of the GNU General Public License % along with this texinfo.tex file; see the file COPYING. If not, write % to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, % Boston, MA 02110-1301, USA. % % As a special exception, when this file is read by TeX when processing % a Texinfo source document, you may use the result without % restriction. (This has been our intent since Texinfo was invented.) % % Please try the latest version of texinfo.tex before submitting bug % reports; you can get the latest version from: % www.gnu.org/software/texinfo/ (the Texinfo home page), or % tug.org/tex/texinfo.tex % (and all CTAN mirrors, see www.ctan.org). % The texinfo.tex in any given distribution could well be out % of date, so if that's what you're using, please check. % % Send bug reports to bug-texinfo@gnu.org. Please include including a % complete document in each bug report with which we can reproduce the % problem. Patches are, of course, greatly appreciated. % % To process a Texinfo manual with TeX, it's most reliable to use the % texi2dvi shell script that comes with the distribution. For a simple % manual foo.texi, however, you can get away with this: % tex foo.texi % texindex foo.?? % tex foo.texi % tex foo.texi % dvips foo.dvi -o # or whatever; this makes foo.ps. % The extra TeX runs get the cross-reference information correct. % Sometimes one run after texindex suffices, and sometimes you need more % than two; texi2dvi does it as many times as necessary. % % It is possible to adapt texinfo.tex for other languages, to some % extent. You can get the existing language-specific files from the % full Texinfo distribution. % % The GNU Texinfo home page is www.gnu.org/software/texinfo.

message{Loading texinfo [version texinfoversion]:}

% If in a .fmt file, print the version number % and turn on active characters that we couldn't do earlier because % they might have appeared in the input file name. everyjob{message{[Texinfo version texinfoversion]}%

\catcode`+=\active \catcode`\_=\active}

message{Basics,} chardefother=12

% We never want plain's outer definition of + in Texinfo. % For @tex, we can use tabalign. let+ = relax

% Save some plain tex macros whose names we will redefine. letptexb=b letptexbullet=bullet letptexc=c letptexcomma=, letptexdot=. letptexdots=dots letptexend=end letptexequiv=equiv letptexexclam=! letptexfootnote=footnote letptexgtr=> letptexhat=^ letptexi=i letptexindent=indent letptexinsert=insert letptexlbrace={ letptexless=< letptexnewwritenewwrite letptexnoindent=noindent letptexplus=+ letptexrbrace=} letptexslash=/ letptexstar=* letptext=t

% If this character appears in an error message or help string, it % starts a new line in the output. newlinechar = `^^J

% Use TeX 3.0's inputlineno to get the line number, for better error % messages, but if we're using an old version of TeX, don't do anything. % ifxinputlinenothisisundefined

\let\linenumber = \empty % Pre-3.0.

else

\def\linenumber{l.\the\inputlineno:\space}

fi

% Set up fixed words for English if not already set. ifxputwordAppendixundefined gdefputwordAppendix{Appendix}fi ifxputwordChapterundefined gdefputwordChapter{Chapter}fi ifxputwordfileundefined gdefputwordfile{file}fi ifxputwordinundefined gdefputwordin{in}fi ifxputwordIndexIsEmptyundefined gdefputwordIndexIsEmpty{(Index is empty)}fi ifxputwordIndexNonexistentundefined gdefputwordIndexNonexistent{(Index is nonexistent)}fi ifxputwordInfoundefined gdefputwordInfo{Info}fi ifxputwordInstanceVariableofundefined gdefputwordInstanceVariableof{Instance Variable of}fi ifxputwordMethodonundefined gdefputwordMethodon{Method on}fi ifxputwordNoTitleundefined gdefputwordNoTitle{No Title}fi ifxputwordofundefined gdefputwordof{of}fi ifxputwordonundefined gdefputwordon{on}fi ifxputwordpageundefined gdefputwordpage{page}fi ifxputwordsectionundefined gdefputwordsection{section}fi ifxputwordSectionundefined gdefputwordSection{Section}fi ifxputwordseeundefined gdefputwordsee{see}fi ifxputwordSeeundefined gdefputwordSee{See}fi ifxputwordShortTOCundefined gdefputwordShortTOC{Short Contents}fi ifxputwordTOCundefined gdefputwordTOC{Table of Contents}fi % ifxputwordMJanundefined gdefputwordMJan{January}fi ifxputwordMFebundefined gdefputwordMFeb{February}fi ifxputwordMMarundefined gdefputwordMMar{March}fi ifxputwordMAprundefined gdefputwordMApr{April}fi ifxputwordMMayundefined gdefputwordMMay{May}fi ifxputwordMJunundefined gdefputwordMJun{June}fi ifxputwordMJulundefined gdefputwordMJul{July}fi ifxputwordMAugundefined gdefputwordMAug{August}fi ifxputwordMSepundefined gdefputwordMSep{September}fi ifxputwordMOctundefined gdefputwordMOct{October}fi ifxputwordMNovundefined gdefputwordMNov{November}fi ifxputwordMDecundefined gdefputwordMDec{December}fi % ifxputwordDefmacundefined gdefputwordDefmac{Macro}fi ifxputwordDefspecundefined gdefputwordDefspec{Special Form}fi ifxputwordDefvarundefined gdefputwordDefvar{Variable}fi ifxputwordDefoptundefined gdefputwordDefopt{User Option}fi ifxputwordDeffuncundefined gdefputwordDeffunc{Function}fi

% In some macros, we cannot use the `? notation—the left quote is % in some cases the escape char. chardefbackChar = `\ chardefcolonChar = `: chardefcommaChar = `, chardefdotChar = `. chardefexclamChar= `! chardefplusChar = `+ chardefquestChar = `? chardefsemiChar = `; chardefunderChar = `_

chardefspaceChar = `\ % chardefspacecat = 10 defspaceisspace{catcodespaceChar=spacecat}

{% for help with debugging.

% example usage: \expandafter\show\activebackslash
\catcode`\! = 0 \catcode`\\ = \active
!global!def!activebackslash{\}

}

% Ignore a token. % defgobble#1{}

% The following is used inside several edef's. defmakecsname#1{expandafternoexpandcsname#1endcsname}

% Hyphenation fixes. hyphenation{

Flor-i-da Ghost-script Ghost-view Mac-OS Post-Script
ap-pen-dix bit-map bit-maps
data-base data-bases eshell fall-ing half-way long-est man-u-script
man-u-scripts mini-buf-fer mini-buf-fers over-view par-a-digm
par-a-digms rath-er rec-tan-gu-lar ro-bot-ics se-vere-ly set-up spa-ces
spell-ing spell-ings
stand-alone strong-est time-stamp time-stamps which-ever white-space
wide-spread wrap-around

}

% Margin to add to right of even pages, to left of odd pages. newdimenbindingoffset newdimennormaloffset newdimenpagewidth newdimenpageheight

% For a final copy, take out the rectangles % that mark overfull boxes (in case you have decided % that the text looks ok even though it passes the margin). % deffinalout{overfullrule=0pt}

% @| inserts a changebar to the left of the current line. It should % surround any changed text. This approach does not work if the % change spans more than two lines of output. To handle that, we would % have adopt a much more difficult approach (putting marks into the main % vertical list for the beginning and end of each change). % def|{%

% \vadjust can only be used in horizontal mode.
\leavevmode
%
% Append this vertical mode material after the current line in the output.
\vadjust{%
  % We want to insert a rule with the height and depth of the current
  % leading; that is exactly what \strutbox is supposed to record.
  \vskip-\baselineskip
  %
  % \vadjust-items are inserted at the left edge of the type.  So
  % the \llap here moves out into the left-hand margin.
  \llap{%
    %
    % For a thicker or thinner bar, change the `1pt'.
    \vrule height\baselineskip width1pt
    %
    % This is the space between the bar and the text.
    \hskip 12pt
  }%
}%

}

% Sometimes it is convenient to have everything in the transcript file % and nothing on the terminal. We don't just call tracingall here, % since that produces some useless output on the terminal. We also make % some effort to order the tracing commands to reduce output in the log % file; cf. trace.sty in LaTeX. % defgloggingall{begingroup globaldefs = 1 loggingall endgroup}% defloggingall{%

\tracingstats2
\tracingpages1
\tracinglostchars2  % 2 gives us more in etex
\tracingparagraphs1
\tracingoutput1
\tracingmacros2
\tracingrestores1
\showboxbreadth\maxdimen \showboxdepth\maxdimen
\ifx\eTeXversion\undefined\else % etex gives us more logging
  \tracingscantokens1
  \tracingifs1
  \tracinggroups1
  \tracingnesting2
  \tracingassigns1
\fi
\tracingcommands3  % 3 gives us more in etex
\errorcontextlines16

}%

% add check for lastpenalty to plain's definitions. If the last thing % we did was a nobreak, we don't want to insert more space. % defsmallbreak{ifnumlastpenalty<10000parifdimlastskip<smallskipamount

\removelastskip\penalty-50\smallskip\fi\fi}

defmedbreak{ifnumlastpenalty<10000parifdimlastskip<medskipamount

\removelastskip\penalty-100\medskip\fi\fi}

defbigbreak{ifnumlastpenalty<10000parifdimlastskip<bigskipamount

\removelastskip\penalty-200\bigskip\fi\fi}

% For @cropmarks command. % Do @cropmarks to get crop marks. % newififcropmarks letcropmarks = cropmarkstrue % % Dimensions to add cropmarks at corners. % Added by P. A. MacKay, 12 Nov. 1986 % newdimenouterhsize newdimenoutervsize % set by the paper size routines newdimencornerlong cornerlong=1pc newdimencornerthick cornerthick=.3pt newdimentopandbottommargin topandbottommargin=.75in

% Main output routine. chardefPAGE = 255 output = {onepageout{pagecontentsPAGE}}

newboxheadlinebox newboxfootlinebox

% onepageout takes a vbox as an argument. Note that pagecontents % does insertions, but you have to call it yourself. defonepageout#1{%

\ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi
%
\ifodd\pageno  \advance\hoffset by \bindingoffset
\else \advance\hoffset by -\bindingoffset\fi
%
% Do this outside of the \shipout so @code etc. will be expanded in
% the headline as they should be, not taken literally (outputting ''code).
\setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}%
\setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}%
%
{%
  % Have to do this stuff outside the \shipout because we want it to
  % take effect in \write's, yet the group defined by the \vbox ends
  % before the \shipout runs.
  %
  \indexdummies         % don't expand commands in the output.
  \shipout\vbox{%
    % Do this early so pdf references go to the beginning of the page.
    \ifpdfmakepagedest \pdfdest name{\the\pageno} xyz\fi
    %
    \ifcropmarks \vbox to \outervsize\bgroup
      \hsize = \outerhsize
      \vskip-\topandbottommargin
      \vtop to0pt{%
        \line{\ewtop\hfil\ewtop}%
        \nointerlineskip
        \line{%
          \vbox{\moveleft\cornerthick\nstop}%
          \hfill
          \vbox{\moveright\cornerthick\nstop}%
        }%
        \vss}%
      \vskip\topandbottommargin
      \line\bgroup
        \hfil % center the page within the outer (page) hsize.
        \ifodd\pageno\hskip\bindingoffset\fi
        \vbox\bgroup
    \fi
    %
    \unvbox\headlinebox
    \pagebody{#1}%
    \ifdim\ht\footlinebox > 0pt
      % Only leave this space if the footline is nonempty.
      % (We lessened \vsize for it in \oddfootingxxx.)
      % The \baselineskip=24pt in plain's \makefootline has no effect.
      \vskip 2\baselineskip
      \unvbox\footlinebox
    \fi
    %
    \ifcropmarks
        \egroup % end of \vbox\bgroup
      \hfil\egroup % end of (centering) \line\bgroup
      \vskip\topandbottommargin plus1fill minus1fill
      \boxmaxdepth = \cornerthick
      \vbox to0pt{\vss
        \line{%
          \vbox{\moveleft\cornerthick\nsbot}%
          \hfill
          \vbox{\moveright\cornerthick\nsbot}%
        }%
        \nointerlineskip
        \line{\ewbot\hfil\ewbot}%
      }%
    \egroup % \vbox from first cropmarks clause
    \fi
  }% end of \shipout\vbox
}% end of group with \indexdummies
\advancepageno
\ifnum\outputpenalty>-20000 \else\dosupereject\fi

}

newinsertmargin dimenmargin=maxdimen

defpagebody#1{vbox topageheight{boxmaxdepth=maxdepth #1}} {catcode`@ =11 gdefpagecontents#1{ifvoidtopinselseunvboxtopinsfi % marginal hacks, juha@viisa.uucp (Juha Takala) ifvoidmarginelse % marginal info is present

\rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi

dimen@=dp#1 unvbox#1 ifvoidfootinselsevskipskipfootinsfootnoterule unvboxfootinsfi ifr@ggedbottom kern-dimen@ vfil fi} }

% Here are the rules for the cropmarks. Note that they are % offset so that the space between them is truly outerhsize or outervsize % (P. A. MacKay, 12 November, 1986) % defewtop{vrule heightcornerthick depth0pt widthcornerlong} defnstop{vbox

{\hrule height\cornerthick depth\cornerlong width\cornerthick}}

defewbot{vrule height0pt depthcornerthick widthcornerlong} defnsbot{vbox

{\hrule height\cornerlong depth\cornerthick width\cornerthick}}

% Parse an argument, then pass it to #1. The argument is the rest of % the input line (except we remove a trailing comment). #1 should be a % macro which expects an ordinary undelimited TeX argument. % defparsearg{parseargusing{}} defparseargusing#1#2{%

\def\next{#2}%
\begingroup
  \obeylines
  \spaceisspace
  #1%
  \parseargline\empty% Insert the \empty token, see \finishparsearg below.

}

{obeylines %

\gdef\parseargline#1^^M{%
  \endgroup % End of the group started in \parsearg.
  \argremovecomment #1\comment\ArgTerm%
}%

}

% First remove any @comment, then any @c comment. defargremovecomment#1comment#2ArgTerm{argremovec #1cArgTerm} defargremovec#1c#2ArgTerm{argcheckspaces#1^^MArgTerm}

% Each occurence of `^^M' or `<space>^^M' is replaced by a single space. % % argremovec might leave us with trailing space, e.g., % @end itemize @c foo % This space token undergoes the same procedure and is eventually removed % by finishparsearg. % defargcheckspaces#1^^M{argcheckspacesX#1^^M ^^M} defargcheckspacesX#1 ^^M{argcheckspacesY#1^^M} defargcheckspacesY#1^^M#2^^M#3ArgTerm{%

\def\temp{#3}%
\ifx\temp\empty
  % We cannot use \next here, as it holds the macro to run;
  % thus we reuse \temp.
  \let\temp\finishparsearg
\else
  \let\temp\argcheckspaces
\fi
% Put the space token in:
\temp#1 #3\ArgTerm

}

% If a delimited argument is enclosed in braces, they get stripped; so % to get exactly the rest of the line, we had to prevent such situation. % We prepended an empty token at the very beginning and we expand it now, % just before passing the control to next. % (Similarily, we have to think about #3 of argcheckspacesY above: it is % either the null string, or it ends with ^^M—thus there is no danger % that a pair of braces would be stripped. % % But first, we have to remove the trailing space token. % deffinishparsearg#1 ArgTerm{expandafternextexpandafter{#1}}

% parseargdeffoo{…} % is roughly equivalent to % deffoo{parseargXfoo} % defXfoo#1{…} % % Actually, I use csnamestringfooendcsname, ie. \foo, as it is my % favourite TeX trick. –kasal, 16nov03

defparseargdef#1{%

\expandafter \doparseargdef \csname\string#1\endcsname #1%

} defdoparseargdef#1#2{%

\def#2{\parsearg#1}%
\def#1##1%

}

% Several utility definitions with active space: {

\obeyspaces
\gdef\obeyedspace{ }

% Make each space character in the input produce a normal interword
% space in the output.  Don't allow a line break at this space, as this
% is used only in environments like @example, where each line of input
% should produce a line of output anyway.
%
\gdef\sepspaces{\obeyspaces\let =\tie}

% If an index command is used in an @example environment, any spaces
% therein should become regular spaces in the raw index file, not the
% expansion of \tie (\leavevmode \penalty \@M \ ).
\gdef\unsepspaces{\let =\space}

}

defflushcr{ifxparlisppar defnext##1{}else letnext=relax fi next}

% Define the framework for environments in texinfo.tex. It's used like this: % % envdeffoo{…} % defEfoo{…} % % It's the responsibility of envdef to insert begingroup before the % actual body; @end closes the group after calling Efoo. envdef also % defines thisenv, so the current environment is known; @end checks % whether the environment name matches. The checkenv macro can also be % used to check whether the current environment is the one expected. % % Non-false conditionals (@iftex, @ifset) don't fit into this, so they % are not treated as enviroments; they don't open a group. (The % implementation of @end takes care not to call endgroup in this % special case.)

% At runtime, environments start with this: defstartenvironment#1{begingroupdefthisenv{#1}} % initialize letthisenvempty

% … but they get defined via “envdeffoo{…}'': longdefenvdef#1#2{def#1{startenvironment#1#2}} defenvparseargdef#1#2{parseargdef#1{startenvironment#1#2}}

% Check whether we're in the right environment: defcheckenv#1{%

\def\temp{#1}%
\ifx\thisenv\temp
\else
  \badenverr
\fi

}

% Evironment mismatch, #1 expected: defbadenverr{%

\errhelp = \EMsimple
\errmessage{This command can appear only \inenvironment\temp,
  not \inenvironment\thisenv}%

} definenvironment#1{%

\ifx#1\empty
  out of any environment%
\else
  in environment \expandafter\string#1%
\fi

}

% @end foo executes the definition of Efoo. % But first, it executes a specialized version of checkenv % parseargdefend{%

\if 1\csname iscond.#1\endcsname
\else
  % The general wording of \badenverr may not be ideal, but... --kasal, 06nov03
  \expandafter\checkenv\csname#1\endcsname
  \csname E#1\endcsname
  \endgroup
\fi

}

newhelpEMsimple{Press RETURN to continue.}

%% Simple single-character @ commands

% @@ prints an @ % Kludge this until the fonts are right (grr). def@{{ttchar64}}

% This is turned off because it was never documented % and you can use @w{…} around a quote to suppress ligatures. %% Define @` and @' to be the same as ` and ' %% but suppressing ligatures. %def`{{`}} %def'{{'}}

% Used to generate quoted braces. defmylbrace {{ttchar123}} defmyrbrace {{ttchar125}} let{=mylbrace let}=myrbrace begingroup

% Definitions to produce \{ and \} commands for indices,
% and @{ and @} for the aux/toc files.
\catcode`\{ = \other \catcode`\} = \other
\catcode`\[ = 1 \catcode`\] = 2
\catcode`\! = 0 \catcode`\\ = \other
!gdef!lbracecmd[\{]%
!gdef!rbracecmd[\}]%
!gdef!lbraceatcmd[@{]%
!gdef!rbraceatcmd[@}]%

!endgroup

% @comma{} to avoid , parsing problems. letcomma = ,

% Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent % Others are defined by plain TeX: @` @' @“ @^ @~ @= @u @v @H. let, = c letdotaccent = . defringaccent#1{{accent23 #1}} lettieaccent = t letubaraccent = b letudotaccent = d

% Other special characters: @questiondown @exclamdown @ordf @ordm % Plain TeX defines: @AA @AE @O @OE @L (plus lowercase versions) @ss. defquestiondown{?`} defexclamdown{!`} defordf{leavevmoderaise1exhbox{selectfontslllsize underbar{a}}} defordm{leavevmoderaise1exhbox{selectfontslllsize underbar{o}}}

% Dotless i and dotless j, used for accents. defimacro{i} defjmacro{j} defdotless#1{%

\def\temp{#1}%
\ifx\temp\imacro \ptexi
\else\ifx\temp\jmacro \j
\else \errmessage{@dotless can be used only with i or j}%
\fi\fi

}

% The TeX{} logo, as in plain, but resetting the spacing so that a % period following counts as ending a sentence. (Idea found in latex.) % edefTeX{TeX spacefactor=1000 }

% @LaTeX{} logo. Not quite the same results as the definition in % latex.ltx, since we use a different font for the raised A; it's most % convenient for us to use an explicitly smaller font, rather than using % the scriptstyle font (since we don't reset scriptstyle and % scriptscriptstyle). % defLaTeX{%

L\kern-.36em
{\setbox0=\hbox{T}%
 \vbox to \ht0{\hbox{\selectfonts\lllsize A}\vss}}%
\kern-.15em
\TeX

}

% Be sure we're in horizontal mode when doing a tie, since we make space % equivalent to this in @example-like environments. Otherwise, a space % at the beginning of a line will start with penalty – and % since penalty is valid in vertical mode, we'd end up putting the % penalty on the vertical list instead of in the new paragraph. {catcode`@ = 11

% Avoid using \@M directly, because that causes trouble
% if the definition is written into an index file.
\global\let\tiepenalty = \@M
\gdef\tie{\leavevmode\penalty\tiepenalty\ }

}

% @: forces normal size whitespace following. def:{spacefactor=1000 }

% @* forces a line break. def*{hfilbreakhbox{}ignorespaces}

% @/ allows a line break. let/=allowbreak

% @. is an end-of-sentence period. def.{.spacefactor=endofsentencespacefactorspace}

% @! is an end-of-sentence bang. def!{!spacefactor=endofsentencespacefactorspace}

% @? is an end-of-sentence query. def?{?spacefactor=endofsentencespacefactorspace}

% @frenchspacing on|off says whether to put extra space after punctuation. % defonword{on} defoffword{off} % parseargdeffrenchspacing{%

\def\temp{#1}%
\ifx\temp\onword \plainfrenchspacing
\else\ifx\temp\offword \plainnonfrenchspacing
\else
  \errhelp = \EMsimple
  \errmessage{Unknown @frenchspacing option `\temp', must be on/off}%
\fi\fi

}

% @w prevents a word break. Without the leavevmode, @w at the % beginning of a paragraph, when TeX is still in vertical mode, would % produce a whole line of output instead of starting the paragraph. defw#1{leavevmodehbox{#1}}

% @group … @end group forces … to be all on one page, by enclosing % it in a TeX vbox. We use vtop instead of vbox to construct the box % to keep its height that of a normal line. According to the rules for % topskip (p.114 of the TeXbook), the glue inserted is % max (topskip - ht (first item), 0). If that height is large, % therefore, no glue is inserted, and the space between the headline and % the text is small, which looks bad. % % Another complication is that the group might be very large. This can % cause the glue on the previous page to be unduly stretched, because it % does not have much material. In this case, it's better to add an % explicit vfill so that the extra space is at the bottom. The % threshold for doing this is if the group is more than vfilllimit % percent of a page (vfilllimit can be changed inside of @tex). % newboxgroupbox defvfilllimit{0.7} % envdefgroup{%

\ifnum\catcode`\^^M=\active \else
  \errhelp = \groupinvalidhelp
  \errmessage{@group invalid in context where filling is enabled}%
\fi
\startsavinginserts
%
\setbox\groupbox = \vtop\bgroup
  % Do @comment since we are called inside an environment such as
  % @example, where each end-of-line in the input causes an
  % end-of-line in the output.  We don't want the end-of-line after
  % the `@group' to put extra space in the output.  Since @group
  % should appear on a line by itself (according to the Texinfo
  % manual), we don't worry about eating any user text.
  \comment

} % % The vtop produces a box with normal height and large depth; thus, TeX puts % baselineskip glue before it, and (when the next line of text is done) % lineskip glue after it. Thus, space below is not quite equal to space % above. But it's pretty close. defEgroup{%

  % To get correct interline space between the last line of the group
  % and the first line afterwards, we have to propagate \prevdepth.
  \endgraf % Not \par, as it may have been set to \lisppar.
  \global\dimen1 = \prevdepth
\egroup           % End the \vtop.
% \dimen0 is the vertical size of the group's box.
\dimen0 = \ht\groupbox  \advance\dimen0 by \dp\groupbox
% \dimen2 is how much space is left on the page (more or less).
\dimen2 = \pageheight   \advance\dimen2 by -\pagetotal
% if the group doesn't fit on the current page, and it's a big big
% group, force a page break.
\ifdim \dimen0 > \dimen2
  \ifdim \pagetotal < \vfilllimit\pageheight
    \page
  \fi
\fi
\box\groupbox
\prevdepth = \dimen1
\checkinserts

} % % TeX puts in an escapechar (i.e., `@') at the beginning of the help % message, so this ends up printing `@group can only …'. % newhelpgroupinvalidhelp{% group can only be used in environments such as @example,^^J% where each line of input produces a line of output.}

% @need space-in-mils % forces a page break if there is not space-in-mils remaining.

newdimenmil mil=0.001in

% Old definition–didn't work. %parseargdefneed{par % %% This method tries to make TeX break the page naturally %% if the depth of the box does not fit. %{baselineskip=0pt% %vtop to #1mil{vfil}kern -#1milnobreak %prevdepth=-1000pt %}}

parseargdefneed{%

% Ensure vertical mode, so we don't make a big box in the middle of a
% paragraph.
\par
%
% If the @need value is less than one line space, it's useless.
\dimen0 = #1\mil
\dimen2 = \ht\strutbox
\advance\dimen2 by \dp\strutbox
\ifdim\dimen0 > \dimen2
  %
  % Do a \strut just to make the height of this box be normal, so the
  % normal leading is inserted relative to the preceding line.
  % And a page break here is fine.
  \vtop to #1\mil{\strut\vfil}%
  %
  % TeX does not even consider page breaks if a penalty added to the
  % main vertical list is 10000 or more.  But in order to see if the
  % empty box we just added fits on the page, we must make it consider
  % page breaks.  On the other hand, we don't want to actually break the
  % page after the empty box.  So we use a penalty of 9999.
  %
  % There is an extremely small chance that TeX will actually break the
  % page at this \penalty, if there are no other feasible breakpoints in
  % sight.  (If the user is using lots of big @group commands, which
  % almost-but-not-quite fill up a page, TeX will have a hard time doing
  % good page breaking, for example.)  However, I could not construct an
  % example where a page broke at this \penalty; if it happens in a real
  % document, then we can reconsider our strategy.
  \penalty9999
  %
  % Back up by the size of the box, whether we did a page break or not.
  \kern -#1\mil
  %
  % Do not allow a page break right after this kern.
  \nobreak
\fi

}

% @br forces paragraph break (and is undocumented).

letbr = par

% @page forces the start of a new page. % defpage{parvfillsupereject}

% @exdent text.… % outputs text on separate line in roman font, starting at standard page margin

% This records the amount of indent in the innermost environment. % That's how much exdent should take out. newskipexdentamount

% This defn is used inside fill environments such as @defun. parseargdefexdent{hfilbreakhbox{kern -exdentamount{rm#1}}hfilbreak}

% This defn is used inside nofill environments such as @example. parseargdefnofillexdent{{advance leftskip by -exdentamount

\leftline{\hskip\leftskip{\rm#1}}}}

% @inmargin{WHICH}{TEXT} puts TEXT in the WHICH margin next to the current % paragraph. For more general purposes, use the margin insertion % class. WHICH is `l' or `r'. % newskipinmarginspacing inmarginspacing=1cm defstrutdepth{dpstrutbox} % defdoinmargin#1#2{strutvadjust{%

\nobreak
\kern-\strutdepth
\vtop to \strutdepth{%
  \baselineskip=\strutdepth
  \vss
  % if you have multiple lines of stuff to put here, you'll need to
  % make the vbox yourself of the appropriate size.
  \ifx#1l%
    \llap{\ignorespaces #2\hskip\inmarginspacing}%
  \else
    \rlap{\hskip\hsize \hskip\inmarginspacing \ignorespaces #2}%
  \fi
  \null
}%

}} definleftmargin{doinmargin l} definrightmargin{doinmargin r} % % @inmargin{TEXT [, RIGHT-TEXT]} % (if RIGHT-TEXT is given, use TEXT for left page, RIGHT-TEXT for right; % else use TEXT for both). % definmargin#1{parseinmargin #1,,finish} defparseinmargin#1,#2,#3finish{% not perfect, but better than nothing.

\setbox0 = \hbox{\ignorespaces #2}%
\ifdim\wd0 > 0pt
  \def\lefttext{#1}%  have both texts
  \def\righttext{#2}%
\else
  \def\lefttext{#1}%  have only one text
  \def\righttext{#1}%
\fi
%
\ifodd\pageno
  \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin
\else
  \def\temp{\inleftmargin\lefttext}%
\fi
\temp

}

% @include file insert text of that file as input. % definclude{parseargusingfilenamecatcodesincludezzz} defincludezzz#1{%

\pushthisfilestack
\def\thisfile{#1}%
{%
  \makevalueexpandable
  \def\temp{\input #1 }%
  \expandafter
}\temp
\popthisfilestack

} deffilenamecatcodes{%

\catcode`\\=\other
\catcode`~=\other
\catcode`^=\other
\catcode`_=\other
\catcode`|=\other
\catcode`<=\other
\catcode`>=\other
\catcode`+=\other
\catcode`-=\other

}

defpushthisfilestack{%

\expandafter\pushthisfilestackX\popthisfilestack\StackTerm

} defpushthisfilestackX{%

\expandafter\pushthisfilestackY\thisfile\StackTerm

} defpushthisfilestackY #1StackTerm #2StackTerm {%

\gdef\popthisfilestack{\gdef\thisfile{#1}\gdef\popthisfilestack{#2}}%

}

defpopthisfilestack{errthisfilestackempty} deferrthisfilestackempty{errmessage{Internal error:

the stack of filenames is empty.}}

defthisfile{}

% @center line % outputs that line, centered. % parseargdefcenter{%

\ifhmode
  \let\next\centerH
\else
  \let\next\centerV
\fi
\next{\hfil \ignorespaces#1\unskip \hfil}%

} defcenterH#1{%

{%
  \hfil\break
  \advance\hsize by -\leftskip
  \advance\hsize by -\rightskip
  \line{#1}%
  \break
}%

} defcenterV#1{line{kernleftskip #1kernrightskip}}

% @sp n outputs n lines of vertical space

parseargdefsp{vskip #1baselineskip}

% @comment …line which is ignored… % @c is the same as @comment % @ignore … @end ignore is another way to write a comment

defcomment{begingroup catcode`^^M=other% catcode`@=other catcode`{=other catcode`}=other% commentxxx} {catcode`^^M=other gdefcommentxxx#1^^M{endgroup}}

letc=comment

% @paragraphindent NCHARS % We'll use ems for NCHARS, close enough. % NCHARS can also be the word `asis' or `none'. % We cannot feasibly implement @paragraphindent asis, though. % defasisword{asis} % no translation, these are keywords defnoneword{none} % parseargdefparagraphindent{%

\def\temp{#1}%
\ifx\temp\asisword
\else
  \ifx\temp\noneword
    \defaultparindent = 0pt
  \else
    \defaultparindent = #1em
  \fi
\fi
\parindent = \defaultparindent

}

% @exampleindent NCHARS % We'll use ems for NCHARS like @paragraphindent. % It seems @exampleindent asis isn't necessary, but % I preserve it to make it similar to @paragraphindent. parseargdefexampleindent{%

\def\temp{#1}%
\ifx\temp\asisword
\else
  \ifx\temp\noneword
    \lispnarrowing = 0pt
  \else
    \lispnarrowing = #1em
  \fi
\fi

}

% @firstparagraphindent WORD % If WORD is `none', then suppress indentation of the first paragraph % after a section heading. If WORD is `insert', then do indent at such % paragraphs. % % The paragraph indentation is suppressed or not by calling % suppressfirstparagraphindent, which the sectioning commands do. % We switch the definition of this back and forth according to WORD. % By default, we suppress indentation. % defsuppressfirstparagraphindent{dosuppressfirstparagraphindent} definsertword{insert} % parseargdeffirstparagraphindent{%

\def\temp{#1}%
\ifx\temp\noneword
  \let\suppressfirstparagraphindent = \dosuppressfirstparagraphindent
\else\ifx\temp\insertword
  \let\suppressfirstparagraphindent = \relax
\else
  \errhelp = \EMsimple
  \errmessage{Unknown @firstparagraphindent option `\temp'}%
\fi\fi

}

% Here is how we actually suppress indentation. Redefine everypar to % kern backwards by parindent, and then reset itself to empty. % % We also make indent itself not actually do anything until the next % paragraph. % gdefdosuppressfirstparagraphindent{%

\gdef\indent{%
  \restorefirstparagraphindent
  \indent
}%
\gdef\noindent{%
  \restorefirstparagraphindent
  \noindent
}%
\global\everypar = {%
  \kern -\parindent
  \restorefirstparagraphindent
}%

}

gdefrestorefirstparagraphindent{%

\global \let \indent = \ptexindent
\global \let \noindent = \ptexnoindent
\global \everypar = {}%

}

% @asis just yields its argument. Used with @table, for example. % defasis#1{#1}

% @math outputs its argument in math mode. % % One complication: _ usually means subscripts, but it could also mean % an actual _ character, as in @math{@var{some_variable} + 1}. So make % _ active, and distinguish by seeing if the current family is slfam, % which is what @var uses. {

\catcode\underChar = \active
\gdef\mathunderscore{%
  \catcode\underChar=\active
  \def_{\ifnum\fam=\slfam \_\else\sb\fi}%
}

} % Another complication: we want \ (and @) to output a \ character. % FYI, plain.tex uses \ as a temporary control sequence (why?), but % this is not advertised and we don't care. Texinfo does not % otherwise define @. % % The mathchar is class=0=ordinary, family=7=ttfam, position=5C=. defmathbackslash{ifnumfam=ttfam mathchar“075C elsebackslash fi} % defmath{%

\tex
\mathunderscore
\let\\ = \mathbackslash
\mathactive
$\finishmath

} deffinishmath#1{#1$endgroup} % Close the group opened by tex.

% Some active characters (such as <) are spaced differently in math. % We have to reset their definitions in case the @math was an argument % to a command which sets the catcodes (such as @item or @section). % {

\catcode`^ = \active
\catcode`< = \active
\catcode`> = \active
\catcode`+ = \active
\gdef\mathactive{%
  \let^ = \ptexhat
  \let< = \ptexless
  \let> = \ptexgtr
  \let+ = \ptexplus
}

}

% @bullet and @minus need the same treatment as @math, just above. defbullet{$ptexbullet$} defminus{$-$}

% @dots{} outputs an ellipsis using the current font. % We do .5em per period so that it has the same spacing in a typewriter % font as three actual period characters. % defdots{%

\leavevmode
\hbox to 1.5em{%
  \hskip 0pt plus 0.25fil
  .\hfil.\hfil.%
  \hskip 0pt plus 0.5fil
}%

}

% @enddots{} is an end-of-sentence ellipsis. % defenddots{%

\dots
\spacefactor=\endofsentencespacefactor

}

% @comma{} is so commas can be inserted into text without messing up % Texinfo's parsing. % letcomma = ,

% @refill is a no-op. letrefill=relax

% If working on a large document in chapters, it is convenient to % be able to disable indexing, cross-referencing, and contents, for test runs. % This is done with @novalidate (before @setfilename). % newififlinks linkstrue % by default we want the aux files. letnovalidate = linksfalse

% @setfilename is done at the beginning of every texinfo file. % So open here the files we need to have open while reading the input. % This makes it possible to make a .fmt file for texinfo. defsetfilename{%

\fixbackslash  % Turn off hack to swallow `\input texinfo'.
\iflinks
  \tryauxfile
  % Open the new aux file.  TeX will close it automatically at exit.
  \immediate\openout\auxfile=\jobname.aux
\fi % \openindices needs to do some work in any case.
\openindices
\let\setfilename=\comment % Ignore extra @setfilename cmds.
%
% If texinfo.cnf is present on the system, read it.
% Useful for site-wide @afourpaper, etc.
\openin 1 texinfo.cnf
\ifeof 1 \else \input texinfo.cnf \fi
\closein 1
%
\comment % Ignore the actual filename.

}

% Called from setfilename. % defopenindices{%

\newindex{cp}%
\newcodeindex{fn}%
\newcodeindex{vr}%
\newcodeindex{tp}%
\newcodeindex{ky}%
\newcodeindex{pg}%

}

% @bye. outerdefbye{pagealignmacrotracingstats=1ptexend}

message{pdf,} % adobe `portable' document format newcounttempnum newcountlnkcount newtoksfilename newcountfilenamelength newcountpgn newtokstoksA newtokstoksB newtokstoksC newtokstoksD newboxboxA newcountcountA newififpdf newififpdfmakepagedest

% when pdftex is run in dvi mode, pdfoutput is defined (so pdfoutput=1 % can be set). So we test for relax and 0 as well as undefined, % borrowed from ifpdf.sty. ifxpdfoutputundefined else

\ifx\pdfoutput\relax
\else
  \ifcase\pdfoutput
  \else
    \pdftrue
  \fi
\fi

fi

% PDF uses PostScript string constants for the names of xref targets, to % for display in the outlines, and in other places. Thus, we have to % double any backslashes. Otherwise, a name like “node” will be % interpreted as a newline (n), followed by o, d, e. Not good. % www.ntg.nl/pipermail/ntg-pdftex/2004-July/000654.html % (and related messages, the final outcome is that it is up to the TeX % user to double the backslashes and otherwise make the string valid, so % that's we do).

% double active backslashes. % {catcode`@=0 catcode`\=active

@gdef@activebackslash{@catcode`@\=@active @otherbackslash}
@gdef@activebackslashdouble{%
  @catcode@backChar=@active
  @let\=@doublebackslash}

}

% To handle parens, we must adopt a different approach, since parens are % not active characters. hyperref.dtx (which has the same problem as % us) handles it with this amazing macro to replace tokens. I've % tinkered with it a little for texinfo, but it's definitely from there. % % #1 is the tokens to replace. % #2 is the replacement. % #3 is the control sequence with the string. % defHyPsdSubst#1#2#3{%

\def\HyPsdReplace##1#1##2\END{%
  ##1%
  \ifx\\##2\\%
  \else
    #2%
    \HyReturnAfterFi{%
      \HyPsdReplace##2\END
    }%
  \fi
}%
\xdef#3{\expandafter\HyPsdReplace#3#1\END}%

} longdefHyReturnAfterFi#1fi{fi#1}

% #1 is a control sequence in which to do the replacements. defbackslashparens#1{%

\xdef#1{#1}% redefine it as its expansion; the definition is simply
           % \lastnode when called from \setref -> \pdfmkdest.
\HyPsdSubst{(}{\backslashlparen}{#1}%
\HyPsdSubst{)}{\backslashrparen}{#1}%

}

{catcodeexclamChar = 0 catcodebackChar = other

!gdef!backslashlparen{\(}%
!gdef!backslashrparen{\)}%

}

ifpdf

\input pdfcolor
\pdfcatalog{/PageMode /UseOutlines}%
\def\dopdfimage#1#2#3{%
  \def\imagewidth{#2}%
  \def\imageheight{#3}%
  % without \immediate, pdftex seg faults when the same image is
  % included twice.  (Version 3.14159-pre-1.0-unofficial-20010704.)
  \ifnum\pdftexversion < 14
    \immediate\pdfimage
  \else
    \immediate\pdfximage
  \fi
    \ifx\empty\imagewidth\else width \imagewidth \fi
    \ifx\empty\imageheight\else height \imageheight \fi
    \ifnum\pdftexversion<13
       #1.pdf%
     \else
       {#1.pdf}%
     \fi
  \ifnum\pdftexversion < 14 \else
    \pdfrefximage \pdflastximage
  \fi}
\def\pdfmkdest#1{{%
  % We have to set dummies so commands such as @code, and characters
  % such as \, aren't expanded when present in a section title.
  \atdummies
  \activebackslashdouble
  \def\pdfdestname{#1}%
  \backslashparens\pdfdestname
  \pdfdest name{\pdfdestname} xyz%
}}%
%
% used to mark target names; must be expandable.
\def\pdfmkpgn#1{#1}%
%
\let\linkcolor = \Blue  % was Cyan, but that seems light?
\def\endlink{\Black\pdfendlink}
% Adding outlines to PDF; macros for calculating structure of outlines
% come from Petr Olsak
\def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0%
  \else \csname#1\endcsname \fi}
\def\advancenumber#1{\tempnum=\expnumber{#1}\relax
  \advance\tempnum by 1
  \expandafter\xdef\csname#1\endcsname{\the\tempnum}}
%
% #1 is the section text, which is what will be displayed in the
% outline by the pdf viewer.  #2 is the pdf expression for the number
% of subentries (or empty, for subsubsections).  #3 is the node text,
% which might be empty if this toc entry had no corresponding node.
% #4 is the page number
%
\def\dopdfoutline#1#2#3#4{%
  % Generate a link to the node text if that exists; else, use the
  % page number.  We could generate a destination for the section
  % text in the case where a section has no node, but it doesn't
  % seem worth the trouble, since most documents are normally structured.
  \def\pdfoutlinedest{#3}%
  \ifx\pdfoutlinedest\empty
    \def\pdfoutlinedest{#4}%
  \else
    % Doubled backslashes in the name.
    {\activebackslashdouble \xdef\pdfoutlinedest{#3}%
     \backslashparens\pdfoutlinedest}%
  \fi
  %
  % Also double the backslashes in the display string.
  {\activebackslashdouble \xdef\pdfoutlinetext{#1}%
   \backslashparens\pdfoutlinetext}%
  %
  \pdfoutline goto name{\pdfmkpgn{\pdfoutlinedest}}#2{\pdfoutlinetext}%
}
%
\def\pdfmakeoutlines{%
  \begingroup
    % Thanh's hack / proper braces in bookmarks
    \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace
    \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace
    %
    % Read toc silently, to get counts of subentries for \pdfoutline.
    \def\numchapentry##1##2##3##4{%
      \def\thischapnum{##2}%
      \def\thissecnum{0}%
      \def\thissubsecnum{0}%
    }%
    \def\numsecentry##1##2##3##4{%
      \advancenumber{chap\thischapnum}%
      \def\thissecnum{##2}%
      \def\thissubsecnum{0}%
    }%
    \def\numsubsecentry##1##2##3##4{%
      \advancenumber{sec\thissecnum}%
      \def\thissubsecnum{##2}%
    }%
    \def\numsubsubsecentry##1##2##3##4{%
      \advancenumber{subsec\thissubsecnum}%
    }%
    \def\thischapnum{0}%
    \def\thissecnum{0}%
    \def\thissubsecnum{0}%
    %
    % use \def rather than \let here because we redefine \chapentry et
    % al. a second time, below.
    \def\appentry{\numchapentry}%
    \def\appsecentry{\numsecentry}%
    \def\appsubsecentry{\numsubsecentry}%
    \def\appsubsubsecentry{\numsubsubsecentry}%
    \def\unnchapentry{\numchapentry}%
    \def\unnsecentry{\numsecentry}%
    \def\unnsubsecentry{\numsubsecentry}%
    \def\unnsubsubsecentry{\numsubsubsecentry}%
    \readdatafile{toc}%
    %
    % Read toc second time, this time actually producing the outlines.
    % The `-' means take the \expnumber as the absolute number of
    % subentries, which we calculated on our first read of the .toc above.
    %
    % We use the node names as the destinations.
    \def\numchapentry##1##2##3##4{%
      \dopdfoutline{##1}{count-\expnumber{chap##2}}{##3}{##4}}%
    \def\numsecentry##1##2##3##4{%
      \dopdfoutline{##1}{count-\expnumber{sec##2}}{##3}{##4}}%
    \def\numsubsecentry##1##2##3##4{%
      \dopdfoutline{##1}{count-\expnumber{subsec##2}}{##3}{##4}}%
    \def\numsubsubsecentry##1##2##3##4{% count is always zero
      \dopdfoutline{##1}{}{##3}{##4}}%
    %
    % PDF outlines are displayed using system fonts, instead of
    % document fonts.  Therefore we cannot use special characters,
    % since the encoding is unknown.  For example, the eogonek from
    % Latin 2 (0xea) gets translated to a | character.  Info from
    % Staszek Wawrykiewicz, 19 Jan 2004 04:09:24 +0100.
    %
    % xx to do this right, we have to translate 8-bit characters to
    % their "best" equivalent, based on the @documentencoding.  Right
    % now, I guess we'll just let the pdf reader have its way.
    \indexnofonts
    \setupdatafile
    \activebackslash
    \input \jobname.toc
  \endgroup
}
%
\def\skipspaces#1{\def\PP{#1}\def\D{|}%
  \ifx\PP\D\let\nextsp\relax
  \else\let\nextsp\skipspaces
    \ifx\p\space\else\addtokens{\filename}{\PP}%
      \advance\filenamelength by 1
    \fi
  \fi
  \nextsp}
\def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax}
\ifnum\pdftexversion < 14
  \let \startlink \pdfannotlink
\else
  \let \startlink \pdfstartlink
\fi
\def\pdfurl#1{%
  \begingroup
    \normalturnoffactive\def\@{@}%
    \makevalueexpandable
    \leavevmode\Red
    \startlink attr{/Border [0 0 0]}%
      user{/Subtype /Link /A << /S /URI /URI (#1) >>}%
  \endgroup}
\def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}}
\def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks}
\def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks}
\def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}}
\def\maketoks{%
  \expandafter\poptoks\the\toksA|ENDTOKS|\relax
  \ifx\first0\adn0
  \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3
  \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6
  \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9
  \else
    \ifnum0=\countA\else\makelink\fi
    \ifx\first.\let\next=\done\else
      \let\next=\maketoks
      \addtokens{\toksB}{\the\toksD}
      \ifx\first,\addtokens{\toksB}{\space}\fi
    \fi
  \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
  \next}
\def\makelink{\addtokens{\toksB}%
  {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0}
\def\pdflink#1{%
  \startlink attr{/Border [0 0 0]} goto name{\pdfmkpgn{#1}}
  \linkcolor #1\endlink}
\def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}

else

\let\pdfmkdest = \gobble
\let\pdfurl = \gobble
\let\endlink = \relax
\let\linkcolor = \relax
\let\pdfmakeoutlines = \relax

fi % ifxpdfoutput

message{fonts,}

% Change the current font style to #1, remembering it in curfontstyle. % For now, we do not accumulate font styles: @b{@i{foo}} prints foo in % italics, not bold italics. % defsetfontstyle#1{%

\def\curfontstyle{#1}% not as a control sequence, because we are \edef'd.
\csname ten#1\endcsname  % change the current font

}

% Select #1 fonts with the current style. % defselectfonts#1{csname #1fontsendcsname csnamecurfontstyleendcsname}

defrm{fam=0 setfontstyle{rm}} defit{fam=itfam setfontstyle{it}} defsl{fam=slfam setfontstyle{sl}} defbf{fam=bffam setfontstyle{bf}}defbfstylename{bf} deftt{fam=ttfam setfontstyle{tt}}

% Texinfo sort of supports the sans serif font style, which plain TeX does not. % So we set up a sf. newfamsffam defsf{fam=sffam setfontstyle{sf}} letli = sf % Sometimes we call it li, not sf.

% We don't need math for this font style. defttsl{setfontstyle{ttsl}}

% Default leading. newdimentextleading textleading = 13.2pt

% Set the baselineskip to #1, and the lineskip and strut size % correspondingly. There is no deep meaning behind these magic numbers % used as factors; they just match (closely enough) what Knuth defined. % deflineskipfactor{.08333} defstrutheightpercent{.70833} defstrutdepthpercent {.29167} % defsetleading#1{%

\normalbaselineskip = #1\relax
\normallineskip = \lineskipfactor\normalbaselineskip
\normalbaselines
\setbox\strutbox =\hbox{%
  \vrule width0pt height\strutheightpercent\baselineskip
                  depth \strutdepthpercent \baselineskip
}%

}

% Set the font macro #1 to the font named #2, adding on the % specified font prefix (normally `cm'). % #3 is the font's design size, #4 is a scale factor defsetfont#1#2#3#4{font#1=fontprefix#2#3 scaled #4}

% Use cm as the default font prefix. % To specify the font prefix, you must define fontprefix % before you read in texinfo.tex. ifxfontprefixundefined deffontprefix{cm} fi % Support font families that don't use the same naming scheme as CM. defrmshape{r} defrmbshape{bx} %where the normal face is bold defbfshape{b} defbxshape{bx} defttshape{tt} defttbshape{tt} defttslshape{sltt} defitshape{ti} defitbshape{bxti} defslshape{sl} defslbshape{bxsl} defsfshape{ss} defsfbshape{ss} defscshape{csc} defscbshape{csc}

% Text fonts (11.2pt, magstep1). deftextnominalsize{11pt} edefmainmagstep{magstephalf} setfonttextrmrmshape{10}{mainmagstep} setfonttextttttshape{10}{mainmagstep} setfonttextbfbfshape{10}{mainmagstep} setfonttextititshape{10}{mainmagstep} setfonttextslslshape{10}{mainmagstep} setfonttextsfsfshape{10}{mainmagstep} setfonttextscscshape{10}{mainmagstep} setfonttextttslttslshape{10}{mainmagstep} fonttexti=cmmi10 scaled mainmagstep fonttextsy=cmsy10 scaled mainmagstep

% A few fonts for @defun names and args. setfontdefbfbfshape{10}{magstep1} setfontdefttttshape{10}{magstep1} setfontdefttslttslshape{10}{magstep1} defdf{lettentt=deftt lettenbf = defbf lettenttsl=defttsl bf}

% Fonts for indices, footnotes, small examples (9pt). defsmallnominalsize{9pt} setfontsmallrmrmshape{9}{1000} setfontsmallttttshape{9}{1000} setfontsmallbfbfshape{10}{900} setfontsmallititshape{9}{1000} setfontsmallslslshape{9}{1000} setfontsmallsfsfshape{9}{1000} setfontsmallscscshape{10}{900} setfontsmallttslttslshape{10}{900} fontsmalli=cmmi9 fontsmallsy=cmsy9

% Fonts for small examples (8pt). defsmallernominalsize{8pt} setfontsmallerrmrmshape{8}{1000} setfontsmallerttttshape{8}{1000} setfontsmallerbfbfshape{10}{800} setfontsmallerititshape{8}{1000} setfontsmallerslslshape{8}{1000} setfontsmallersfsfshape{8}{1000} setfontsmallerscscshape{10}{800} setfontsmallerttslttslshape{10}{800} fontsmalleri=cmmi8 fontsmallersy=cmsy8

% Fonts for title page (20.4pt): deftitlenominalsize{20pt} setfonttitlermrmbshape{12}{magstep3} setfonttitleititbshape{10}{magstep4} setfonttitleslslbshape{10}{magstep4} setfonttitlettttbshape{12}{magstep3} setfonttitlettslttslshape{10}{magstep4} setfonttitlesfsfbshape{17}{magstep1} lettitlebf=titlerm setfonttitlescscbshape{10}{magstep4} fonttitlei=cmmi12 scaled magstep3 fonttitlesy=cmsy10 scaled magstep4 defauthorrm{secrm} defauthortt{sectt}

% Chapter (and unnumbered) fonts (17.28pt). defchapnominalsize{17pt} setfontchaprmrmbshape{12}{magstep2} setfontchapititbshape{10}{magstep3} setfontchapslslbshape{10}{magstep3} setfontchapttttbshape{12}{magstep2} setfontchapttslttslshape{10}{magstep3} setfontchapsfsfbshape{17}{1000} letchapbf=chaprm setfontchapscscbshape{10}{magstep3} fontchapi=cmmi12 scaled magstep2 fontchapsy=cmsy10 scaled magstep3

% Section fonts (14.4pt). defsecnominalsize{14pt} setfontsecrmrmbshape{12}{magstep1} setfontsecititbshape{10}{magstep2} setfontsecslslbshape{10}{magstep2} setfontsecttttbshape{12}{magstep1} setfontsecttslttslshape{10}{magstep2} setfontsecsfsfbshape{12}{magstep1} letsecbfsecrm setfontsecscscbshape{10}{magstep2} fontseci=cmmi12 scaled magstep1 fontsecsy=cmsy10 scaled magstep2

% Subsection fonts (13.15pt). defssecnominalsize{13pt} setfontssecrmrmbshape{12}{magstephalf} setfontssecititbshape{10}{1315} setfontssecslslbshape{10}{1315} setfontssecttttbshape{12}{magstephalf} setfontssecttslttslshape{10}{1315} setfontssecsfsfbshape{12}{magstephalf} letssecbfssecrm setfontssecscscbshape{10}{1315} fontsseci=cmmi12 scaled magstephalf fontssecsy=cmsy10 scaled 1315

% Reduced fonts for @acro in text (10pt). defreducednominalsize{10pt} setfontreducedrmrmshape{10}{1000} setfontreducedttttshape{10}{1000} setfontreducedbfbfshape{10}{1000} setfontreducedititshape{10}{1000} setfontreducedslslshape{10}{1000} setfontreducedsfsfshape{10}{1000} setfontreducedscscshape{10}{1000} setfontreducedttslttslshape{10}{1000} fontreducedi=cmmi10 fontreducedsy=cmsy10

% In order for the font changes to affect most math symbols and letters, % we have to define the textfont of the standard families. Since % texinfo doesn't allow for producing subscripts and superscripts except % in the main text, we don't bother to reset scriptfont and % scriptscriptfont (which would also require loading a lot more fonts). % defresetmathfonts{%

\textfont0=\tenrm \textfont1=\teni \textfont2=\tensy
\textfont\itfam=\tenit \textfont\slfam=\tensl \textfont\bffam=\tenbf
\textfont\ttfam=\tentt \textfont\sffam=\tensf

}

% The font-changing commands redefine the meanings of tenSTYLE, instead % of just STYLE. We do this because STYLE needs to also set the % current fam for math mode. Our STYLE (e.g., rm) commands hardwire % tenSTYLE to set the current font. % % Each font-changing command also sets the names lsize (one size lower) % and lllsize (three sizes lower). These relative commands are used in % the LaTeX logo and acronyms. % % This all needs generalizing, badly. % deftextfonts{%

\let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
\let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
\let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
\let\tenttsl=\textttsl
\def\curfontsize{text}%
\def\lsize{reduced}\def\lllsize{smaller}%
\resetmathfonts \setleading{\textleading}}

deftitlefonts{%

\let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl
\let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc
\let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy
\let\tenttsl=\titlettsl
\def\curfontsize{title}%
\def\lsize{chap}\def\lllsize{subsec}%
\resetmathfonts \setleading{25pt}}

deftitlefont#1{{titlefontsrm #1}} defchapfonts{%

\let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
\let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
\let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
\let\tenttsl=\chapttsl
\def\curfontsize{chap}%
\def\lsize{sec}\def\lllsize{text}%
\resetmathfonts \setleading{19pt}}

defsecfonts{%

\let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
\let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
\let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
\let\tenttsl=\secttsl
\def\curfontsize{sec}%
\def\lsize{subsec}\def\lllsize{reduced}%
\resetmathfonts \setleading{16pt}}

defsubsecfonts{%

\let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
\let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
\let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
\let\tenttsl=\ssecttsl
\def\curfontsize{ssec}%
\def\lsize{text}\def\lllsize{small}%
\resetmathfonts \setleading{15pt}}

letsubsubsecfonts = subsecfonts defreducedfonts{%

\let\tenrm=\reducedrm \let\tenit=\reducedit \let\tensl=\reducedsl
\let\tenbf=\reducedbf \let\tentt=\reducedtt \let\reducedcaps=\reducedsc
\let\tensf=\reducedsf \let\teni=\reducedi \let\tensy=\reducedsy
\let\tenttsl=\reducedttsl
\def\curfontsize{reduced}%
\def\lsize{small}\def\lllsize{smaller}%
\resetmathfonts \setleading{10.5pt}}

defsmallfonts{%

\let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl
\let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc
\let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy
\let\tenttsl=\smallttsl
\def\curfontsize{small}%
\def\lsize{smaller}\def\lllsize{smaller}%
\resetmathfonts \setleading{10.5pt}}

defsmallerfonts{%

\let\tenrm=\smallerrm \let\tenit=\smallerit \let\tensl=\smallersl
\let\tenbf=\smallerbf \let\tentt=\smallertt \let\smallcaps=\smallersc
\let\tensf=\smallersf \let\teni=\smalleri \let\tensy=\smallersy
\let\tenttsl=\smallerttsl
\def\curfontsize{smaller}%
\def\lsize{smaller}\def\lllsize{smaller}%
\resetmathfonts \setleading{9.5pt}}

% Set the fonts to use with the @small… environments. letsmallexamplefonts = smallfonts

% About smallexamplefonts. If we use smallfonts (9pt), @smallexample % can fit this many characters: % 8.5x11=86 smallbook=72 a4=90 a5=69 % If we use scriptfonts (8pt), then we can fit this many characters: % 8.5x11=90+ smallbook=80 a4=90+ a5=77 % For me, subjectively, the few extra characters that fit aren't worth % the additional smallness of 8pt. So I'm making the default 9pt. % % By the way, for comparison, here's what fits with @example (10pt): % 8.5x11=71 smallbook=60 a4=75 a5=58 % % I wish the USA used A4 paper. % –karl, 24jan03.

% Set up the default fonts, so we can use them for creating boxes. % textfonts rm

% Define these so they can be easily changed for other fonts. defangleleft{$langle$} defangleright{$rangle$}

% Count depth in font-changes, for error checks newcountfontdepth fontdepth=0

% Fonts for short table of contents. setfontshortcontrmrmshape{12}{1000} setfontshortcontbfbfshape{10}{magstep1} % no cmb12 setfontshortcontslslshape{12}{1000} setfontshortcontttttshape{12}{1000}

%% Add scribe-like font environments, plus @l for inline lisp (usually sans %% serif) and @ii for TeX italic

% smartitalic{ARG} outputs arg in italics, followed by an italic correction % unless the following character is such as not to need one. defsmartitalicx{ifxnext,elseifxnext-elseifxnext.else

\ptexslash\fi\fi\fi}

defsmartslanted#1{{ifusingttttslsl #1}futureletnextsmartitalicx} defsmartitalic#1{{ifusingttttslit #1}futureletnextsmartitalicx}

% like smartslanted except unconditionally uses ttsl. % @var is set to this for defun arguments. defttslanted#1{{ttsl #1}futureletnextsmartitalicx}

% like smartslanted except unconditionally use sl. We never want % ttsl for book titles, do we? defcite#1{{sl #1}futureletnextsmartitalicx}

leti=smartitalic letslanted=smartslanted letvar=smartslanted letdfn=smartslanted letemph=smartitalic

% @b, explicit bold. defb#1{{bf #1}} letstrong=b

% @sansserif, explicit sans. defsansserif#1{{sf #1}}

% We can't just use exhyphenpenalty, because that only has effect at % the end of a paragraph. Restore normal hyphenation at the end of the % group within which nohyphenation is presumably called. % defnohyphenation{hyphencharfont = -1 aftergrouprestorehyphenation} defrestorehyphenation{hyphencharfont = `- }

% Set sfcode to normal for the chars that usually have another value. % Can't use plain's frenchspacing because it uses the `x notation, and % sometimes x has an active definition that messes things up. % catcode`@=11

\def\plainfrenchspacing{%
  \sfcode\dotChar  =\@m \sfcode\questChar=\@m \sfcode\exclamChar=\@m
  \sfcode\colonChar=\@m \sfcode\semiChar =\@m \sfcode\commaChar =\@m
  \def\endofsentencespacefactor{1000}% for @. and friends
}
\def\plainnonfrenchspacing{%
  \sfcode`\.3000\sfcode`\?3000\sfcode`\!3000
  \sfcode`\:2000\sfcode`\;1500\sfcode`\,1250
  \def\endofsentencespacefactor{3000}% for @. and friends
}

catcode`@=other defendofsentencespacefactor{3000}% default

deft#1{%

{\tt \rawbackslash \plainfrenchspacing #1}%
\null

} defsamp#1{`tclose{#1}'null} setfontkeyrmrmshape{8}{1000} fontkeysy=cmsy9 defkey#1{{keyrmtextfont2=keysy leavevmodehbox{%

\raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{%
  \vbox{\hrule\kern-0.4pt
   \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}%
  \kern-0.4pt\hrule}%
\kern-.06em\raise0.4pt\hbox{\angleright}}}}

% The old definition, with no lozenge: %defkey #1{{ttsl nohyphenation uppercase{#1}}null} defctrl #1{{tt rawbackslash hat}#1}

% @file, @option are the same as @samp. letfile=samp letoption=samp

% @code is a modification of @t, % which makes spaces the same size as normal in the surrounding text. deftclose#1{%

{%
  % Change normal interword space to be same as for the current font.
  \spaceskip = \fontdimen2\font
  %
  % Switch to typewriter.
  \tt
  %
  % But `\ ' produces the large typewriter interword space.
  \def\ {{\spaceskip = 0pt{} }}%
  %
  % Turn off hyphenation.
  \nohyphenation
  %
  \rawbackslash
  \plainfrenchspacing
  #1%
}%
\null

}

% We must turn on hyphenation at `-' and `_' in @code. % Otherwise, it is too hard to avoid overfull hboxes % in the Emacs manual, the Library manual, etc.

% Unfortunately, TeX uses one parameter (hyphenchar) to control % both hyphenation at - and hyphenation within words. % We must therefore turn them both off (tclose does that) % and arrange explicitly to hyphenate at a dash. % – rms. {

\catcode`\-=\active
\catcode`\_=\active
%
\global\def\code{\begingroup
  \catcode`\-=\active  \catcode`\_=\active
  \ifallowcodebreaks
   \let-\codedash
   \let_\codeunder
  \else
   \let-\realdash
   \let_\realunder
  \fi
  \codex
}

}

defrealdash{-} defcodedash{-discretionary{}{}{}} defcodeunder{%

% this is all so @math{@code{var_name}+1} can work.  In math mode, _
% is "active" (mathcode"8000) and \normalunderscore (or \char95, etc.)
% will therefore expand the active definition of _, which is us
% (inside @code that is), therefore an endless loop.
\ifusingtt{\ifmmode
             \mathchar"075F % class 0=ordinary, family 7=ttfam, pos 0x5F=_.
           \else\normalunderscore \fi
           \discretionary{}{}{}}%
          {\_}%

} defcodex #1{tclose{#1}endgroup}

% An additional complication: the above will allow breaks after, e.g., % each of the four underscores in __typeof__. This is undesirable in % some manuals, especially if they don't have long identifiers in % general. @allowcodebreaks provides a way to control this. % newififallowcodebreaks allowcodebreakstrue

defkeywordtrue{true} defkeywordfalse{false}

parseargdefallowcodebreaks{%

\def\txiarg{#1}%
\ifx\txiarg\keywordtrue
  \allowcodebreakstrue
\else\ifx\txiarg\keywordfalse
  \allowcodebreaksfalse
\else
  \errhelp = \EMsimple
  \errmessage{Unknown @allowcodebreaks option `\txiarg'}%
\fi\fi

}

% @kbd is like @code, except that if the argument is just one @key command, % then @kbd has no effect.

% @kbdinputstyle – arg is `distinct' (@kbd uses slanted tty font always), % `example' (@kbd uses ttsl only inside of @example and friends), % or `code' (@kbd uses normal tty font always). parseargdefkbdinputstyle{%

\def\txiarg{#1}%
\ifx\txiarg\worddistinct
  \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}%
\else\ifx\txiarg\wordexample
  \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}%
\else\ifx\txiarg\wordcode
  \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}%
\else
  \errhelp = \EMsimple
  \errmessage{Unknown @kbdinputstyle option `\txiarg'}%
\fi\fi\fi

} defworddistinct{distinct} defwordexample{example} defwordcode{code}

% Default is `distinct.' kbdinputstyle distinct

defxkey{key} defkbdfoo#1#2#3par{defone{#1}defthree{#3}defthreex{??}% ifxonexkeyifxthreexthree key{#2}% else{tclose{kbdfontlook}}fi else{tclose{kbdfontlook}}fi}

% For @indicateurl, @env, @command quotes seem unnecessary, so use code. letindicateurl=code letenv=code letcommand=code

% @uref (abbreviation for `urlref') takes an optional (comma-separated) % second argument specifying the text to display and an optional third % arg as text to display instead of (rather than in addition to) the url % itself. First (mandatory) arg is the url. Perhaps eventually put in % a hypertex special here. % defuref#1{douref #1,,,finish} defdouref#1,#2,#3,#4finish{begingroup

\unsepspaces
\pdfurl{#1}%
\setbox0 = \hbox{\ignorespaces #3}%
\ifdim\wd0 > 0pt
  \unhbox0 % third arg given, show only that
\else
  \setbox0 = \hbox{\ignorespaces #2}%
  \ifdim\wd0 > 0pt
    \ifpdf
      \unhbox0             % PDF: 2nd arg given, show only it
    \else
      \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url
    \fi
  \else
    \code{#1}% only url given, so show it
  \fi
\fi
\endlink

endgroup}

% @url synonym for @uref, since that's how everyone uses it. % leturl=uref

% rms does not like angle brackets –karl, 17may97. % So now @email is just like @uref, unless we are pdf. % %defemail#1{angleleft{tt #1}angleright} ifpdf

\def\email#1{\doemail#1,,\finish}
\def\doemail#1,#2,#3\finish{\begingroup
  \unsepspaces
  \pdfurl{mailto:#1}%
  \setbox0 = \hbox{\ignorespaces #2}%
  \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi
  \endlink
\endgroup}

else

\let\email=\uref

fi

% Check if we are currently using a typewriter font. Since all the % Computer Modern typewriter fonts have zero interword stretch (and % shrink), and it is reasonable to expect all typewriter fonts to have % this property, we can check that font parameter. % defifmonospace{ifdimfontdimen3font=0pt }

% Typeset a dimension, e.g., `in' or `pt'. The only reason for the % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt. % defdmn#1{thinspace #1}

defkbd#1{deflook{#1}expandafterkbdfoolook??par}

% @l was never documented to mean “switch to the Lisp font'', % and it is not used as such in any manual I can find. We need it for % Polish suppressed-l. –karl, 22sep96. %defl#1{{li #1}null}

% Explicit font changes: @r, @sc, undocumented @ii. defr#1{{rm #1}} % roman font defsc#1{{smallcaps#1}} % smallcaps font defii#1{{it #1}} % italic font

% @acronym for “FBI”, “NATO”, and the like. % We print this one point size smaller, since it's intended for % all-uppercase. % defacronym#1{doacronym #1,,finish} defdoacronym#1,#2,#3finish{%

{\selectfonts\lsize #1}%
\def\temp{#2}%
\ifx\temp\empty \else
  \space ({\unsepspaces \ignorespaces \temp \unskip})%
\fi

}

% @abbr for “Comput. J.” and the like. % No font change, but don't do end-of-sentence spacing. % defabbr#1{doabbr #1,,finish} defdoabbr#1,#2,#3finish{%

{\plainfrenchspacing #1}%
\def\temp{#2}%
\ifx\temp\empty \else
  \space ({\unsepspaces \ignorespaces \temp \unskip})%
\fi

}

% @pounds{} is a sterling sign, which Knuth put in the CM italic font. % defpounds{{it$}}

% @euro{} comes from a separate font, depending on the current style. % We use the free feym* fonts from the eurosym package by Henrik % Theiling, which support regular, slanted, bold and bold slanted (and % “outlined” (blackboard board, sort of) versions, which we don't need). % It is available from www.ctan.org/tex-archive/fonts/eurosym. % % Although only regular is the truly official Euro symbol, we ignore % that. The Euro is designed to be slightly taller than the regular % font height. % % feymr - regular % feymo - slanted % feybr - bold % feybo - bold slanted % % There is no good (free) typewriter version, to my knowledge. % A feymr10 euro is ~7.3pt wide, while a normal cmtt10 char is ~5.25pt wide. % Hmm. % % Also doesn't work in math. Do we need to do math with euro symbols? % Hope not. % % defeuro{{eurofont e}} defeurofont{%

% We set the font at each command, rather than predefining it in
% \textfonts and the other font-switching commands, so that
% installations which never need the symbol don't have to have the
% font installed.
% 
% There is only one designed size (nominal 10pt), so we always scale
% that to the current nominal size.
% 
% By the way, simply using "at 1em" works for cmr10 and the like, but
% does not work for cmbx10 and other extended/shrunken fonts.
% 
\def\eurosize{\csname\curfontsize nominalsize\endcsname}%
%
\ifx\curfontstyle\bfstylename 
  % bold:
  \font\thiseurofont = \ifusingit{feybo10}{feybr10} at \eurosize
\else 
  % regular:
  \font\thiseurofont = \ifusingit{feymo10}{feymr10} at \eurosize
\fi
\thiseurofont

}

% @registeredsymbol - R in a circle. The font for the R should really % be smaller yet, but lllsize is the best we can do for now. % Adapted from the plain.tex definition of copyright. % defregisteredsymbol{%

$^{{\ooalign{\hfil\raise.07ex\hbox{\selectfonts\lllsize R}%
             \hfil\crcr\Orb}}%
  }$%

}

% Laurent Siebenmann reports Orb undefined with: % Textures 1.7.7 (preloaded format=plain 93.10.14) (68K) 16 APR 2004 02:38 % so we'll define it if necessary. % ifxOrbundefined defOrb{mathhexbox20D} fi

message{page headings,}

newskiptitlepagetopglue titlepagetopglue = 1.5in newskiptitlepagebottomglue titlepagebottomglue = 2pc

% First the title page. Must do @settitle before @titlepage. newififseenauthor newififfinishedtitlepage

% Do an implicit @contents or @shortcontents after @end titlepage if the % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage. % newififsetcontentsaftertitlepage

\let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue

newififsetshortcontentsaftertitlepage

\let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue

parseargdefshorttitlepage{begingrouphbox{}vskip 1.5in chaprm centerline{#1}%

\endgroup\page\hbox{}\page}

envdeftitlepage{%

% Open one extra group, as we want to close it in the middle of \Etitlepage.
\begingroup
  \parindent=0pt \textfonts
  % Leave some space at the very top of the page.
  \vglue\titlepagetopglue
  % No rule at page bottom unless we print one at the top with @title.
  \finishedtitlepagetrue
  %
  % Most title ``pages'' are actually two pages long, with space
  % at the top of the second.  We don't want the ragged left on the second.
  \let\oldpage = \page
  \def\page{%
    \iffinishedtitlepage\else
       \finishtitlepage
    \fi
    \let\page = \oldpage
    \page
    \null
  }%

}

defEtitlepage{%

  \iffinishedtitlepage\else
      \finishtitlepage
  \fi
  % It is important to do the page break before ending the group,
  % because the headline and footline are only empty inside the group.
  % If we use the new definition of \page, we always get a blank page
  % after the title page, which we certainly don't want.
  \oldpage
\endgroup
%
% Need this before the \...aftertitlepage checks so that if they are
% in effect the toc pages will come out with page numbers.
\HEADINGSon
%
% If they want short, they certainly want long too.
\ifsetshortcontentsaftertitlepage
  \shortcontents
  \contents
  \global\let\shortcontents = \relax
  \global\let\contents = \relax
\fi
%
\ifsetcontentsaftertitlepage
  \contents
  \global\let\contents = \relax
  \global\let\shortcontents = \relax
\fi

}

deffinishtitlepage{%

\vskip4pt \hrule height 2pt width \hsize
\vskip\titlepagebottomglue
\finishedtitlepagetrue

}

%%% Macros to be used within @titlepage:

letsubtitlerm=tenrm defsubtitlefont{subtitlerm normalbaselineskip = 13pt normalbaselines}

defauthorfont{authorrm normalbaselineskip = 16pt normalbaselines

\let\tt=\authortt}

parseargdeftitle{%

\checkenv\titlepage
\leftline{\titlefonts\rm #1}
% print a rule at the page bottom also.
\finishedtitlepagefalse
\vskip4pt \hrule height 4pt width \hsize \vskip4pt

}

parseargdefsubtitle{%

\checkenv\titlepage
{\subtitlefont \rightline{#1}}%

}

% @author should come last, but may come many times. % It can also be used inside @quotation. % parseargdefauthor{%

\def\temp{\quotation}%
\ifx\thisenv\temp
  \def\quotationauthor{#1}% printed in \Equotation.
\else
  \checkenv\titlepage
  \ifseenauthor\else \vskip 0pt plus 1filll \seenauthortrue \fi
  {\authorfont \leftline{#1}}%
\fi

}

%%% Set up page headings and footings.

letthispage=folio

newtoksevenheadline % headline on even pages newtoksoddheadline % headline on odd pages newtoksevenfootline % footline on even pages newtoksoddfootline % footline on odd pages

% Now make TeX use those variables headline={{textfontsrm ifoddpageno theoddheadline

\else \the\evenheadline \fi}}

footline={{textfontsrm ifoddpageno theoddfootline

\else \the\evenfootline \fi}\HEADINGShook}

letHEADINGShook=relax

% Commands to set those variables. % For example, this is what @headings on does % @evenheading @thistitle|@thispage|@thischapter % @oddheading @thischapter|@thispage|@thistitle % @evenfooting @thisfile|| % @oddfooting ||@thisfile

defevenheading{parseargevenheadingxxx} defevenheadingxxx #1{evenheadingyyy #1||||finish} defevenheadingyyy #1|#2|#3|#4finish{% globalevenheadline={rlap{centerline{#2}}line{#1hfil#3}}}

defoddheading{parseargoddheadingxxx} defoddheadingxxx #1{oddheadingyyy #1||||finish} defoddheadingyyy #1|#2|#3|#4finish{% globaloddheadline={rlap{centerline{#2}}line{#1hfil#3}}}

parseargdefeveryheading{oddheadingxxx{#1}evenheadingxxx{#1}}%

defevenfooting{parseargevenfootingxxx} defevenfootingxxx #1{evenfootingyyy #1||||finish} defevenfootingyyy #1|#2|#3|#4finish{% globalevenfootline={rlap{centerline{#2}}line{#1hfil#3}}}

defoddfooting{parseargoddfootingxxx} defoddfootingxxx #1{oddfootingyyy #1||||finish} defoddfootingyyy #1|#2|#3|#4finish{%

\global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}%
%
% Leave some space for the footline.  Hopefully ok to assume
% @evenfooting will not be used by itself.
\global\advance\pageheight by -\baselineskip
\global\advance\vsize by -\baselineskip

}

parseargdefeveryfooting{oddfootingxxx{#1}evenfootingxxx{#1}}

% @headings double turns headings on for double-sided printing. % @headings single turns headings on for single-sided printing. % @headings off turns them off. % @headings on same as @headings double, retained for compatibility. % @headings after turns on double-sided headings after this page. % @headings doubleafter turns on double-sided headings after this page. % @headings singleafter turns on single-sided headings after this page. % By default, they are off at the start of a document, % and turned `on' after @end titlepage.

defheadings #1 {csname HEADINGS#1endcsname}

defHEADINGSoff{% globalevenheadline={hfil} globalevenfootline={hfil} globaloddheadline={hfil} globaloddfootline={hfil}} HEADINGSoff % When we turn headings on, set the page number to 1. % For double-sided printing, put current file name in lower left corner, % chapter name on inside top of right hand pages, document % title on inside top of left hand pages, and page numbers on outside top % edge of all pages. defHEADINGSdouble{% globalpageno=1 globalevenfootline={hfil} globaloddfootline={hfil} globalevenheadline={line{foliohfilthistitle}} globaloddheadline={line{thischapterhfilfolio}} globalletcontentsalignmacro = chapoddpage } letcontentsalignmacro = chappager

% For single-sided printing, chapter title goes across top left of page, % page number on top right. defHEADINGSsingle{% globalpageno=1 globalevenfootline={hfil} globaloddfootline={hfil} globalevenheadline={line{thischapterhfilfolio}} globaloddheadline={line{thischapterhfilfolio}} globalletcontentsalignmacro = chappager } defHEADINGSon{HEADINGSdouble}

defHEADINGSafter{letHEADINGShook=HEADINGSdoublex} letHEADINGSdoubleafter=HEADINGSafter defHEADINGSdoublex{% globalevenfootline={hfil} globaloddfootline={hfil} globalevenheadline={line{foliohfilthistitle}} globaloddheadline={line{thischapterhfilfolio}} globalletcontentsalignmacro = chapoddpage }

defHEADINGSsingleafter{letHEADINGShook=HEADINGSsinglex} defHEADINGSsinglex{% globalevenfootline={hfil} globaloddfootline={hfil} globalevenheadline={line{thischapterhfilfolio}} globaloddheadline={line{thischapterhfilfolio}} globalletcontentsalignmacro = chappager }

% Subroutines used in generating headings % This produces Day Month Year style of output. % Only define if not already defined, in case a txi-??.tex file has set % up a different format (e.g., txi-cs.tex does this). ifxtodayundefined deftoday{%

\number\day\space
\ifcase\month
\or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr
\or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug
\or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec
\fi
\space\number\year}

fi

% @settitle line… specifies the title of the document, for headings. % It generates no output of its own. defthistitle{putwordNoTitle} defsettitle{parsearg{gdefthistitle}}

message{tables,} % Tables – @table, @ftable, @vtable, @item(x).

% default indentation of table text newdimentableindent tableindent=.8in % default indentation of @itemize and @enumerate text newdimenitemindent itemindent=.3in % margin between end of table item and start of table text. newdimenitemmargin itemmargin=.1in

% used internally for itemindent minus itemmargin newdimenitemmax

% Note @table, @ftable, and @vtable define @item, @itemx, etc., with % these defs. % They also define itemindex % to index the item name in whatever manner is desired (perhaps none).

newififitemxneedsnegativevskip

defitemxpar{parifitemxneedsnegativevskipnobreakvskip-parskipnobreakfi}

definternalBitem{smallbreak parseargitemzzz} definternalBitemx{itemxpar parseargitemzzz}

defitemzzz #1{begingroup %

\advance\hsize by -\rightskip
\advance\hsize by -\tableindent
\setbox0=\hbox{\itemindicate{#1}}%
\itemindex{#1}%
\nobreak % This prevents a break before @itemx.
%
% If the item text does not fit in the space we have, put it on a line
% by itself, and do not allow a page break either before or after that
% line.  We do not start a paragraph here because then if the next
% command is, e.g., @kindex, the whatsit would get put into the
% horizontal list on a line by itself, resulting in extra blank space.
\ifdim \wd0>\itemmax
  %
  % Make this a paragraph so we get the \parskip glue and wrapping,
  % but leave it ragged-right.
  \begingroup
    \advance\leftskip by-\tableindent
    \advance\hsize by\tableindent
    \advance\rightskip by0pt plus1fil
    \leavevmode\unhbox0\par
  \endgroup
  %
  % We're going to be starting a paragraph, but we don't want the
  % \parskip glue -- logically it's part of the @item we just started.
  \nobreak \vskip-\parskip
  %
  % Stop a page break at the \parskip glue coming up.  However, if
  % what follows is an environment such as @example, there will be no
  % \parskip glue; then the negative vskip we just inserted would
  % cause the example and the item to crash together.  So we use this
  % bizarre value of 10001 as a signal to \aboveenvbreak to insert
  % \parskip glue after all.  Section titles are handled this way also.
  % 
  \penalty 10001
  \endgroup
  \itemxneedsnegativevskipfalse
\else
  % The item text fits into the space.  Start a paragraph, so that the
  % following text (if any) will end up on the same line.
  \noindent
  % Do this with kerns and \unhbox so that if there is a footnote in
  % the item text, it can migrate to the main vertical list and
  % eventually be printed.
  \nobreak\kern-\tableindent
  \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0
  \unhbox0
  \nobreak\kern\dimen0
  \endgroup
  \itemxneedsnegativevskiptrue
\fi

}

defitem{errmessage{@item while not in a list environment}} defitemx{errmessage{@itemx while not in a list environment}}

% @table, @ftable, @vtable. envdeftable{%

\let\itemindex\gobble
\tablecheck{table}%

} envdefftable{%

\def\itemindex ##1{\doind {fn}{\code{##1}}}%
\tablecheck{ftable}%

} envdefvtable{%

\def\itemindex ##1{\doind {vr}{\code{##1}}}%
\tablecheck{vtable}%

} deftablecheck#1{%

\ifnum \the\catcode`\^^M=\active
  \endgroup
  \errmessage{This command won't work in this context; perhaps the problem is
    that we are \inenvironment\thisenv}%
  \def\next{\doignore{#1}}%
\else
  \let\next\tablex
\fi
\next

} deftablex#1{%

\def\itemindicate{#1}%
\parsearg\tabley

} deftabley#1{%

{%
  \makevalueexpandable
  \edef\temp{\noexpand\tablez #1\space\space\space}%
  \expandafter
}\temp \endtablez

} deftablez #1 #2 #3 #4endtablez{%

\aboveenvbreak
\ifnum 0#1>0 \advance \leftskip by #1\mil \fi
\ifnum 0#2>0 \tableindent=#2\mil \fi
\ifnum 0#3>0 \advance \rightskip by #3\mil \fi
\itemmax=\tableindent
\advance \itemmax by -\itemmargin
\advance \leftskip by \tableindent
\exdentamount=\tableindent
\parindent = 0pt
\parskip = \smallskipamount
\ifdim \parskip=0pt \parskip=2pt \fi
\let\item = \internalBitem
\let\itemx = \internalBitemx

} defEtable{endgrafafterenvbreak} letEftableEtable letEvtableEtable letEitemizeEtable letEenumerateEtable

% This is the counter used by @enumerate, which is really @itemize

newcount itemno

envdefitemize{parseargdoitemize}

defdoitemize#1{%

\aboveenvbreak
\itemmax=\itemindent
\advance\itemmax by -\itemmargin
\advance\leftskip by \itemindent
\exdentamount=\itemindent
\parindent=0pt
\parskip=\smallskipamount
\ifdim\parskip=0pt \parskip=2pt \fi
\def\itemcontents{#1}%
% @itemize with no arg is equivalent to @itemize @bullet.
\ifx\itemcontents\empty\def\itemcontents{\bullet}\fi
\let\item=\itemizeitem

}

% Definition of @item while inside @itemize and @enumerate. % defitemizeitem{%

\advance\itemno by 1  % for enumerations
{\let\par=\endgraf \smallbreak}% reasonable place to break
{%
 % If the document has an @itemize directly after a section title, a
 % \nobreak will be last on the list, and \sectionheading will have
 % done a \vskip-\parskip.  In that case, we don't want to zero
 % parskip, or the item text will crash with the heading.  On the
 % other hand, when there is normal text preceding the item (as there
 % usually is), we do want to zero parskip, or there would be too much
 % space.  In that case, we won't have a \nobreak before.  At least
 % that's the theory.
 \ifnum\lastpenalty<10000 \parskip=0in \fi
 \noindent
 \hbox to 0pt{\hss \itemcontents \kern\itemmargin}%
 \vadjust{\penalty 1200}}% not good to break after first line of item.
\flushcr

}

% splitoff TOKENSendmark defines first to be the first token in % TOKENS, and rest to be the remainder. % defsplitoff#1#2endmark{deffirst{#1}defrest{#2}}%

% Allow an optional argument of an uppercase letter, lowercase letter, % or number, to specify the first label in the enumerated list. No % argument is the same as `1'. % envparseargdefenumerate{enumeratey #1 endenumeratey} defenumeratey #1 #2endenumeratey{%

% If we were given no argument, pretend we were given `1'.
\def\thearg{#1}%
\ifx\thearg\empty \def\thearg{1}\fi
%
% Detect if the argument is a single token.  If so, it might be a
% letter.  Otherwise, the only valid thing it can be is a number.
% (We will always have one token, because of the test we just made.
% This is a good thing, since \splitoff doesn't work given nothing at
% all -- the first parameter is undelimited.)
\expandafter\splitoff\thearg\endmark
\ifx\rest\empty
  % Only one token in the argument.  It could still be anything.
  % A ``lowercase letter'' is one whose \lccode is nonzero.
  % An ``uppercase letter'' is one whose \lccode is both nonzero, and
  %   not equal to itself.
  % Otherwise, we assume it's a number.
  %
  % We need the \relax at the end of the \ifnum lines to stop TeX from
  % continuing to look for a <number>.
  %
  \ifnum\lccode\expandafter`\thearg=0\relax
    \numericenumerate % a number (we hope)
  \else
    % It's a letter.
    \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
      \lowercaseenumerate % lowercase letter
    \else
      \uppercaseenumerate % uppercase letter
    \fi
  \fi
\else
  % Multiple tokens in the argument.  We hope it's a number.
  \numericenumerate
\fi

}

% An @enumerate whose labels are integers. The starting integer is % given in thearg. % defnumericenumerate{%

\itemno = \thearg
\startenumeration{\the\itemno}%

}

% The starting (lowercase) letter is in thearg. deflowercaseenumerate{%

\itemno = \expandafter`\thearg
\startenumeration{%
  % Be sure we're not beyond the end of the alphabet.
  \ifnum\itemno=0
    \errmessage{No more lowercase letters in @enumerate; get a bigger
                alphabet}%
  \fi
  \char\lccode\itemno
}%

}

% The starting (uppercase) letter is in thearg. defuppercaseenumerate{%

\itemno = \expandafter`\thearg
\startenumeration{%
  % Be sure we're not beyond the end of the alphabet.
  \ifnum\itemno=0
    \errmessage{No more uppercase letters in @enumerate; get a bigger
                alphabet}
  \fi
  \char\uccode\itemno
}%

}

% Call doitemize, adding a period to the first argument and supplying the % common last two arguments. Also subtract one from the initial value in % itemno, since @item increments itemno. % defstartenumeration#1{%

\advance\itemno by -1
\doitemize{#1.}\flushcr

}

% @alphaenumerate and @capsenumerate are abbreviations for giving an arg % to @enumerate. % defalphaenumerate{enumerate{a}} defcapsenumerate{enumerate{A}} defEalphaenumerate{Eenumerate} defEcapsenumerate{Eenumerate}

% @multitable macros % Amy Hendrickson, 8/18/94, 3/6/96 % % @multitable … @end multitable will make as many columns as desired. % Contents of each column will wrap at width given in preamble. Width % can be specified either with sample text given in a template line, % or in percent of hsize, the current width of text on page.

% Table can continue over pages but will only break between lines.

% To make preamble: % % Either define widths of columns in terms of percent of hsize: % @multitable @columnfractions .25 .3 .45 % @item … % % Numbers following @columnfractions are the percent of the total % current hsize to be used for each column. You may use as many % columns as desired.

% Or use a template: % @multitable {Column 1 template} {Column 2 template} {Column 3 template} % @item … % using the widest term desired in each column.

% Each new table line starts with @item, each subsequent new column % starts with @tab. Empty columns may be produced by supplying @tab's % with nothing between them for as many times as empty columns are needed, % ie, @tab@tab@tab will produce two empty columns.

% @item, @tab do not need to be on their own lines, but it will not hurt % if they are.

% Sample multitable:

% @multitable {Column 1 template} {Column 2 template} {Column 3 template} % @item first col stuff @tab second col stuff @tab third col % @item % first col stuff % @tab % second col stuff % @tab % third col % @item first col stuff @tab second col stuff % @tab Many paragraphs of text may be used in any column. % % They will wrap at the width determined by the template. % @item@tab@tab This will be in third column. % @end multitable

% Default dimensions may be reset by user. % @multitableparskip is vertical space between paragraphs in table. % @multitableparindent is paragraph indent in table. % @multitablecolmargin is horizontal space to be left between columns. % @multitablelinespace is space to leave between table items, baseline % to baseline. % 0pt means it depends on current normal line spacing. % newskipmultitableparskip newskipmultitableparindent newdimenmultitablecolspace newskipmultitablelinespace multitableparskip=0pt multitableparindent=6pt multitablecolspace=12pt multitablelinespace=0pt

% Macros used to set up halign preamble: % letendsetuptablerelax defxendsetuptable{endsetuptable} letcolumnfractionsrelax defxcolumnfractions{columnfractions} newififsetpercent

% #1 is the @columnfraction, usually a decimal number like .5, but might % be just 1. We just use it, whatever it is. % defpickupwholefraction#1 {%

\global\advance\colcount by 1
\expandafter\xdef\csname col\the\colcount\endcsname{#1\hsize}%
\setuptable

}

newcountcolcount defsetuptable#1{%

\def\firstarg{#1}%
\ifx\firstarg\xendsetuptable
  \let\go = \relax
\else
  \ifx\firstarg\xcolumnfractions
    \global\setpercenttrue
  \else
    \ifsetpercent
       \let\go\pickupwholefraction
    \else
       \global\advance\colcount by 1
       \setbox0=\hbox{#1\unskip\space}% Add a normal word space as a
                 % separator; typically that is always in the input, anyway.
       \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
    \fi
  \fi
  \ifx\go\pickupwholefraction
    % Put the argument back for the \pickupwholefraction call, so
    % we'll always have a period there to be parsed.
    \def\go{\pickupwholefraction#1}%
  \else
    \let\go = \setuptable
  \fi%
\fi
\go

}

% multitable-only commands. % % @headitem starts a heading row, which we typeset in bold. % Assignments have to be global since we are inside the implicit group % of an alignment entry. Note that everycr resets everytab. defheaditem{checkenvmultitable crcr globaleverytab={bf}theeverytab}% % % A tab used to include hskip1sp. But then the space in a template % line is not enough. That is bad. So let's go back to just `&' until % we encounter the problem it was intended to solve again. % –karl, nathan@acm.org, 20apr99. deftab{checkenvmultitable &theeverytab}%

% @multitable … @end multitable definitions: % newtokseverytab % insert after every tab. % envdefmultitable{%

\vskip\parskip
\startsavinginserts
%
% @item within a multitable starts a normal row.
% We use \def instead of \let so that if one of the multitable entries
% contains an @itemize, we don't choke on the \item (seen as \crcr aka
% \endtemplate) expanding \doitemize.
\def\item{\crcr}%
%
\tolerance=9500
\hbadness=9500
\setmultitablespacing
\parskip=\multitableparskip
\parindent=\multitableparindent
\overfullrule=0pt
\global\colcount=0
%
\everycr = {%
  \noalign{%
    \global\everytab={}%
    \global\colcount=0 % Reset the column counter.
    % Check for saved footnotes, etc.
    \checkinserts
    % Keeps underfull box messages off when table breaks over pages.
    %\filbreak
      % Maybe so, but it also creates really weird page breaks when the
      % table breaks over pages. Wouldn't \vfil be better?  Wait until the
      % problem manifests itself, so it can be fixed for real --karl.
  }%
}%
%
\parsearg\domultitable

} defdomultitable#1{%

% To parse everything between @multitable and @item:
\setuptable#1 \endsetuptable
%
% This preamble sets up a generic column definition, which will
% be used as many times as user calls for columns.
% \vtop will set a single line and will also let text wrap and
% continue for many paragraphs if desired.
\halign\bgroup &%
  \global\advance\colcount by 1
  \multistrut
  \vtop{%
    % Use the current \colcount to find the correct column width:
    \hsize=\expandafter\csname col\the\colcount\endcsname
    %
    % In order to keep entries from bumping into each other
    % we will add a \leftskip of \multitablecolspace to all columns after
    % the first one.
    %
    % If a template has been used, we will add \multitablecolspace
    % to the width of each template entry.
    %
    % If the user has set preamble in terms of percent of \hsize we will
    % use that dimension as the width of the column, and the \leftskip
    % will keep entries from bumping into each other.  Table will start at
    % left margin and final column will justify at right margin.
    %
    % Make sure we don't inherit \rightskip from the outer environment.
    \rightskip=0pt
    \ifnum\colcount=1
      % The first column will be indented with the surrounding text.
      \advance\hsize by\leftskip
    \else
      \ifsetpercent \else
        % If user has not set preamble in terms of percent of \hsize
        % we will advance \hsize by \multitablecolspace.
        \advance\hsize by \multitablecolspace
      \fi
     % In either case we will make \leftskip=\multitablecolspace:
    \leftskip=\multitablecolspace
    \fi
    % Ignoring space at the beginning and end avoids an occasional spurious
    % blank line, when TeX decides to break the line at the space before the
    % box from the multistrut, so the strut ends up on a line by itself.
    % For example:
    % @multitable @columnfractions .11 .89
    % @item @code{#}
    % @tab Legal holiday which is valid in major parts of the whole country.
    % Is automatically provided with highlighting sequences respectively
    % marking characters.
    \noindent\ignorespaces##\unskip\multistrut
  }\cr

} defEmultitable{%

\crcr
\egroup % end the \halign
\global\setpercentfalse

}

defsetmultitablespacing{%

\def\multistrut{\strut}% just use the standard line spacing
%
% Compute \multitablelinespace (if not defined by user) for use in
% \multitableparskip calculation.  We used define \multistrut based on
% this, but (ironically) that caused the spacing to be off.
% See bug-texinfo report from Werner Lemberg, 31 Oct 2004 12:52:20 +0100.

ifdimmultitablelinespace=0pt setbox0=vbox{X}globalmultitablelinespace=thebaselineskip globaladvancemultitablelinespace by-ht0 fi %% Test to see if parskip is larger than space between lines of %% table. If not, do nothing. %% If so, set to same dimension as multitablelinespace. ifdimmultitableparskip>multitablelinespace globalmultitableparskip=multitablelinespace globaladvancemultitableparskip-7pt %% to keep parskip somewhat smaller

%% than skip between lines in the table.

fi% ifdimmultitableparskip=0pt globalmultitableparskip=multitablelinespace globaladvancemultitableparskip-7pt %% to keep parskip somewhat smaller

%% than skip between lines in the table.

fi}

message{conditionals,}

% @iftex, @ifnotdocbook, @ifnothtml, @ifnotinfo, @ifnotplaintext, % @ifnotxml always succeed. They currently do nothing; we don't % attempt to check whether the conditionals are properly nested. But we % have to remember that they are conditionals, so that @end doesn't % attempt to close an environment group. % defmakecond#1{%

\expandafter\let\csname #1\endcsname = \relax
\expandafter\let\csname iscond.#1\endcsname = 1

} makecond{iftex} makecond{ifnotdocbook} makecond{ifnothtml} makecond{ifnotinfo} makecond{ifnotplaintext} makecond{ifnotxml}

% Ignore @ignore, @ifhtml, @ifinfo, and the like. % defdirentry{doignore{direntry}} defdocumentdescription{doignore{documentdescription}} defdocbook{doignore{docbook}} defhtml{doignore{html}} defifdocbook{doignore{ifdocbook}} defifhtml{doignore{ifhtml}} defifinfo{doignore{ifinfo}} defifnottex{doignore{ifnottex}} defifplaintext{doignore{ifplaintext}} defifxml{doignore{ifxml}} defignore{doignore{ignore}} defmenu{doignore{menu}} defxml{doignore{xml}}

% Ignore text until a line `@end #1', keeping track of nested conditionals. % % A count to remember the depth of nesting. newcountdoignorecount

defdoignore#1{begingroup

% Scan in ``verbatim'' mode:
\catcode`\@ = \other
\catcode`\{ = \other
\catcode`\} = \other
%
% Make sure that spaces turn into tokens that match what \doignoretext wants.
\spaceisspace
%
% Count number of #1's that we've seen.
\doignorecount = 0
%
% Swallow text until we reach the matching `@end #1'.
\dodoignore{#1}%

}

{ catcode`_=11 % We want to use _STOP_ which cannot appear in texinfo source.

\obeylines %
%
\gdef\dodoignore#1{%
  % #1 contains the command name as a string, e.g., `ifinfo'.
  %
  % Define a command to find the next `@end #1', which must be on a line
  % by itself.
  \long\def\doignoretext##1^^M@end #1{\doignoretextyyy##1^^M@#1\_STOP_}%
  % And this command to find another #1 command, at the beginning of a
  % line.  (Otherwise, we would consider a line `@c @ifset', for
  % example, to count as an @ifset for nesting.)
  \long\def\doignoretextyyy##1^^M@#1##2\_STOP_{\doignoreyyy{##2}\_STOP_}%
  %
  % And now expand that command.
  \obeylines %
  \doignoretext ^^M%
}%

}

defdoignoreyyy#1{%

\def\temp{#1}%
\ifx\temp\empty                       % Nothing found.
  \let\next\doignoretextzzz
\else                                 % Found a nested condition, ...
  \advance\doignorecount by 1
  \let\next\doignoretextyyy           % ..., look for another.
  % If we're here, #1 ends with ^^M\ifinfo (for example).
\fi
\next #1% the token \_STOP_ is present just after this macro.

}

% We have to swallow the remaining “_STOP_”. % defdoignoretextzzz#1{%

\ifnum\doignorecount = 0      % We have just found the outermost @end.
  \let\next\enddoignore
\else                         % Still inside a nested condition.
  \advance\doignorecount by -1
  \let\next\doignoretext      % Look for the next @end.
\fi
\next

}

% Finish off ignored text. defenddoignore{endgroupignorespaces}

% @set VAR sets the variable VAR to an empty value. % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE. % % Since we want to separate VAR from REST-OF-LINE (which might be % empty), we can't just use parsearg; we have to insert a space of our % own to delimit the rest of the line, and then take it out again if we % didn't need it. % We rely on the fact that parsearg sets catcode`\ =10. % parseargdefset{setyyy#1 endsetyyy} defsetyyy#1 #2endsetyyy{%

{%
  \makevalueexpandable
  \def\temp{#2}%
  \edef\next{\gdef\makecsname{SET#1}}%
  \ifx\temp\empty
    \next{}%
  \else
    \setzzz#2\endsetzzz
  \fi
}%

} % Remove the trailing space setxxx inserted. defsetzzz#1 endsetzzz{next{#1}}

% @clear VAR clears (i.e., unsets) the variable VAR. % parseargdefclear{%

{%
  \makevalueexpandable
  \global\expandafter\let\csname SET#1\endcsname=\relax
}%

}

% @value{foo} gets the text saved in variable foo. defvalue{begingroupmakevalueexpandablevaluexxx} defvaluexxx#1{expandablevalue{#1}endgroup} {

\catcode`\- = \active \catcode`\_ = \active
%
\gdef\makevalueexpandable{%
  \let\value = \expandablevalue
  % We don't want these characters active, ...
  \catcode`\-=\other \catcode`\_=\other
  % ..., but we might end up with active ones in the argument if
  % we're called from @code, as @code{@value{foo-bar_}}, though.
  % So \let them to their normal equivalents.
  \let-\realdash \let_\normalunderscore
}

}

% We have this subroutine so that we can handle at least some @value's % properly in indexes (we call makevalueexpandable in indexdummies). % The command has to be fully expandable (if the variable is set), since % the result winds up in the index file. This means that if the % variable's value contains other Texinfo commands, it's almost certain % it will fail (although perhaps we could fix that with sufficient work % to do a one-level expansion on the result, instead of complete). % defexpandablevalue#1{%

\expandafter\ifx\csname SET#1\endcsname\relax
  {[No value for ``#1'']}%
  \message{Variable `#1', used in @value, is not set.}%
\else
  \csname SET#1\endcsname
\fi

}

% @ifset VAR … @end ifset reads the `…' iff VAR has been defined % with @set. % % To get special treatment of `@end ifset,' call makeond and the redefine. % makecond{ifset} defifset{parsearg{doifset{letnext=ifsetfail}}} defdoifset#1#2{%

{%
  \makevalueexpandable
  \let\next=\empty
  \expandafter\ifx\csname SET#2\endcsname\relax
    #1% If not set, redefine \next.
  \fi
  \expandafter
}\next

} defifsetfail{doignore{ifset}}

% @ifclear VAR … @end ifclear reads the `…' iff VAR has never been % defined with @set, or has been undefined with @clear. % % The `else' inside the `doifset' parameter is a trick to reuse the % above code: if the variable is not set, do nothing, if it is set, % then redefine next to ifclearfail. % makecond{ifclear} defifclear{parsearg{doifset{else letnext=ifclearfail}}} defifclearfail{doignore{ifclear}}

% @dircategory CATEGORY – specify a category of the dir file % which this file should belong to. Ignore this in TeX. letdircategory=comment

% @defininfoenclose. letdefinfoenclose=comment

message{indexing,} % Index generation facilities

% Define newwrite to be identical to plain tex's newwrite % except not outer, so it can be used within macros and if's. edefnewwrite{makecsname{ptexnewwrite}}

% newindex {foo} defines an index named foo. % It automatically defines fooindex such that % fooindex …rest of line… puts an entry in the index foo. % It also defines fooindfile to be the number of the output channel for % the file that accumulates this index. The file's extension is foo. % The name of an index should be no more than 2 characters long % for the sake of vms. % defnewindex#1{%

\iflinks
  \expandafter\newwrite \csname#1indfile\endcsname
  \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
\fi
\expandafter\xdef\csname#1index\endcsname{%     % Define @#1index
  \noexpand\doindex{#1}}

}

% @defindex foo == newindex{foo} % defdefindex{parseargnewindex}

% Define @defcodeindex, like @defindex except put all entries in @code. % defdefcodeindex{parseargnewcodeindex} % defnewcodeindex#1{%

\iflinks
  \expandafter\newwrite \csname#1indfile\endcsname
  \openout \csname#1indfile\endcsname \jobname.#1
\fi
\expandafter\xdef\csname#1index\endcsname{%
  \noexpand\docodeindex{#1}}%

}

% @synindex foo bar makes index foo feed into index bar. % Do this instead of @defindex foo if you don't want it as a separate index. % % @syncodeindex foo bar similar, but put all entries made for index foo % inside @code. % defsynindex#1 #2 {dosynindexdoindex{#1}{#2}} defsyncodeindex#1 #2 {dosynindexdocodeindex{#1}{#2}}

% #1 is doindex or docodeindex, #2 the index getting redefined (foo), % #3 the target index (bar). defdosynindex#1#2#3{%

% Only do \closeout if we haven't already done it, else we'll end up
% closing the target index.
\expandafter \ifx\csname donesynindex#2\endcsname \undefined
  % The \closeout helps reduce unnecessary open files; the limit on the
  % Acorn RISC OS is a mere 16 files.
  \expandafter\closeout\csname#2indfile\endcsname
  \expandafter\let\csname\donesynindex#2\endcsname = 1
\fi
% redefine \fooindfile:
\expandafter\let\expandafter\temp\expandafter=\csname#3indfile\endcsname
\expandafter\let\csname#2indfile\endcsname=\temp
% redefine \fooindex:
\expandafter\xdef\csname#2index\endcsname{\noexpand#1{#3}}%

}

% Define doindex, the driver for all fooindex macros. % Argument #1 is generated by the calling fooindex macro, % and it is “foo”, the name of the index.

% doindex just uses parsearg; it calls doind for the actual work. % This is because doind is more useful to call from other macros.

% There is also dosubind {index}{topic}{subtopic} % which makes an entry in a two-level index such as the operation index.

defdoindex#1{edefindexname{#1}parseargsingleindexer} defsingleindexer #1{doind{indexname}{#1}}

% like the previous two, but they put @code around the argument. defdocodeindex#1{edefindexname{#1}parseargsinglecodeindexer} defsinglecodeindexer #1{doind{indexname}{code{#1}}}

% Take care of Texinfo commands that can appear in an index entry. % Since there are some commands we want to expand, and others we don't, % we have to laboriously prevent expansion for those that we don't. % defindexdummies{%

\escapechar = `\\     % use backslash in output files.
\def\@{@}% change to @@ when we switch to @ as escape char in index files.
\def\ {\realbackslash\space }%
% Need these in case \tex is in effect and \{ is a \delimiter again.
% But can't use \lbracecmd and \rbracecmd because texindex assumes
% braces and backslashes are used only as delimiters.
\let\{ = \mylbrace
\let\} = \myrbrace
%
% Do the redefinitions.
\commondummies

}

% For the aux and toc files, @ is the escape character. So we want to % redefine everything using @ as the escape character (instead of % realbackslash, still used for index files). When everything uses @, % this will be simpler. % defatdummies{%

\def\@{@@}%
\def\ {@ }%
\let\{ = \lbraceatcmd
\let\} = \rbraceatcmd
%
% Do the redefinitions.
\commondummies

}

% Called from indexdummies and atdummies. % defcommondummies{%

%
% \definedummyword defines \#1 as \string\#1\space, thus effectively
% preventing its expansion.  This is used only for control% words,
% not control letters, because the \space would be incorrect for
% control characters, but is needed to separate the control word
% from whatever follows.
%
% For control letters, we have \definedummyletter, which omits the
% space.
%
% These can be used both for control words that take an argument and
% those that do not.  If it is followed by {arg} in the input, then
% that will dutifully get written to the index (or wherever).
%
\def\definedummyword  ##1{\def##1{\string##1\space}}%
\def\definedummyletter##1{\def##1{\string##1}}%
\let\definedummyaccent\definedummyletter
%
\commondummiesnofonts
%
\definedummyletter\_%
%
% Non-English letters.
\definedummyword\AA
\definedummyword\AE
\definedummyword\L
\definedummyword\OE
\definedummyword\O
\definedummyword\aa
\definedummyword\ae
\definedummyword\l
\definedummyword\oe
\definedummyword\o
\definedummyword\ss
\definedummyword\exclamdown
\definedummyword\questiondown
\definedummyword\ordf
\definedummyword\ordm
%
% Although these internal commands shouldn't show up, sometimes they do.
\definedummyword\bf
\definedummyword\gtr
\definedummyword\hat
\definedummyword\less
\definedummyword\sf
\definedummyword\sl
\definedummyword\tclose
\definedummyword\tt
%
\definedummyword\LaTeX
\definedummyword\TeX
%
% Assorted special characters.
\definedummyword\bullet
\definedummyword\comma
\definedummyword\copyright
\definedummyword\registeredsymbol
\definedummyword\dots
\definedummyword\enddots
\definedummyword\equiv
\definedummyword\error
\definedummyword\euro
\definedummyword\expansion
\definedummyword\minus
\definedummyword\pounds
\definedummyword\point
\definedummyword\print
\definedummyword\result
%
% We want to disable all macros so that they are not expanded by \write.
\macrolist
%
\normalturnoffactive
%
% Handle some cases of @value -- where it does not contain any
% (non-fully-expandable) commands.
\makevalueexpandable

}

% commondummiesnofonts: common to commondummies and indexnofonts. % % Better have this without active chars. {

\catcode`\~=\other
\gdef\commondummiesnofonts{%
  % Control letters and accents.
  \definedummyletter\!%
  \definedummyaccent\"%
  \definedummyaccent\'%
  \definedummyletter\*%
  \definedummyaccent\,%
  \definedummyletter\.%
  \definedummyletter\/%
  \definedummyletter\:%
  \definedummyaccent\=%
  \definedummyletter\?%
  \definedummyaccent\^%
  \definedummyaccent\`%
  \definedummyaccent\~%
  \definedummyword\u
  \definedummyword\v
  \definedummyword\H
  \definedummyword\dotaccent
  \definedummyword\ringaccent
  \definedummyword\tieaccent
  \definedummyword\ubaraccent
  \definedummyword\udotaccent
  \definedummyword\dotless
  %
  % Texinfo font commands.
  \definedummyword\b
  \definedummyword\i
  \definedummyword\r
  \definedummyword\sc
  \definedummyword\t
  %
  % Commands that take arguments.
  \definedummyword\acronym
  \definedummyword\cite
  \definedummyword\code
  \definedummyword\command
  \definedummyword\dfn
  \definedummyword\emph
  \definedummyword\env
  \definedummyword\file
  \definedummyword\kbd
  \definedummyword\key
  \definedummyword\math
  \definedummyword\option
  \definedummyword\samp
  \definedummyword\strong
  \definedummyword\tie
  \definedummyword\uref
  \definedummyword\url
  \definedummyword\var
  \definedummyword\verb
  \definedummyword\w
}

}

% indexnofonts is used when outputting the strings to sort the index % by, and when constructing control sequence names. It eliminates all % control sequences and just writes whatever the best ASCII sort string % would be for a given command (usually its argument). % defindexnofonts{%

% Accent commands should become @asis.
\def\definedummyaccent##1{\let##1\asis}%
% We can just ignore other control letters.
\def\definedummyletter##1{\let##1\empty}%
% Hopefully, all control words can become @asis.
\let\definedummyword\definedummyaccent
%
\commondummiesnofonts
%
% Don't no-op \tt, since it isn't a user-level command
% and is used in the definitions of the active chars like <, >, |, etc.
% Likewise with the other plain tex font commands.
%\let\tt=\asis
%
\def\ { }%
\def\@{@}%
% how to handle braces?
\def\_{\normalunderscore}%
%
% Non-English letters.
\def\AA{AA}%
\def\AE{AE}%
\def\L{L}%
\def\OE{OE}%
\def\O{O}%
\def\aa{aa}%
\def\ae{ae}%
\def\l{l}%
\def\oe{oe}%
\def\o{o}%
\def\ss{ss}%
\def\exclamdown{!}%
\def\questiondown{?}%
\def\ordf{a}%
\def\ordm{o}%
%
\def\LaTeX{LaTeX}%
\def\TeX{TeX}%
%
% Assorted special characters.
% (The following {} will end up in the sort string, but that's ok.)
\def\bullet{bullet}%
\def\comma{,}%
\def\copyright{copyright}%
\def\registeredsymbol{R}%
\def\dots{...}%
\def\enddots{...}%
\def\equiv{==}%
\def\error{error}%
\def\euro{euro}%
\def\expansion{==>}%
\def\minus{-}%
\def\pounds{pounds}%
\def\point{.}%
\def\print{-|}%
\def\result{=>}%
%
% We need to get rid of all macros, leaving only the arguments (if present).
% Of course this is not nearly correct, but it is the best we can do for now.
% makeinfo does not expand macros in the argument to @deffn, which ends up
% writing an index entry, and texindex isn't prepared for an index sort entry
% that starts with \.
% 
% Since macro invocations are followed by braces, we can just redefine them
% to take a single TeX argument.  The case of a macro invocation that
% goes to end-of-line is not handled.
% 
\macrolist

}

letindexbackslash=0 %overridden during printindex. letSETmarginindex=relax % put index entries in margin (undocumented)?

% Most index entries go through here, but dosubind is the general case. % #1 is the index name, #2 is the entry text. defdoind#1#2{dosubind{#1}{#2}{}}

% Workhorse for all fooindexes. % #1 is name of index, #2 is stuff to put there, #3 is subentry – % empty if called from doind, as we usually are (the main exception % is with most defuns, which call us directly). % defdosubind#1#2#3{%

\iflinks
{%
  % Store the main index entry text (including the third arg).
  \toks0 = {#2}%
  % If third arg is present, precede it with a space.
  \def\thirdarg{#3}%
  \ifx\thirdarg\empty \else
    \toks0 = \expandafter{\the\toks0 \space #3}%
  \fi
  %
  \edef\writeto{\csname#1indfile\endcsname}%
  %
  \ifvmode
    \dosubindsanitize
  \else
    \dosubindwrite
  \fi
}%
\fi

}

% Write the entry in toks0 to the index file: % defdosubindwrite{%

% Put the index entry in the margin if desired.
\ifx\SETmarginindex\relax\else
  \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
\fi
%
% Remember, we are within a group.
\indexdummies % Must do this here, since \bf, etc expand at this stage
\def\backslashcurfont{\indexbackslash}% \indexbackslash isn't defined now
    % so it will be output as is; and it will print as backslash.
%
% Process the index entry with all font commands turned off, to
% get the string to sort by.
{\indexnofonts
 \edef\temp{\the\toks0}% need full expansion
 \xdef\indexsorttmp{\temp}%
}%
%
% Set up the complete index entry, with both the sort key and
% the original text, including any font commands.  We write
% three arguments to \entry to the .?? file (four in the
% subentry case), texindex reduces to two when writing the .??s
% sorted result.
\edef\temp{%
  \write\writeto{%
    \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
}%
\temp

}

% Take care of unwanted page breaks: % % If a skip is the last thing on the list now, preserve it % by backing up by lastskip, doing the write, then inserting % the skip again. Otherwise, the whatsit generated by the % write will make lastskip zero. The result is that sequences % like this: % @end defun % @tindex whatever % @defun … % will have extra space inserted, because the medbreak in the % start of the @defun won't see the skip inserted by the @end of % the previous defun. % % But don't do any of this if we're not in vertical mode. We % don't want to do a vskip and prematurely end a paragraph. % % Avoid page breaks due to these extra skips, too. % % But wait, there is a catch there: % We'll have to check whether lastskip is zero skip. ifdim is not % sufficient for this purpose, as it ignores stretch and shrink parts % of the skip. The only way seems to be to check the textual % representation of the skip. % % The following is almost like defzeroskipmacro{0.0pt} except that % the “p'' and “t'' characters have catcode other, not 11 (letter). % edefzeroskipmacro{expandafterthecsname z@skipendcsname} % % …, ready, GO: % defdosubindsanitize{%

% \lastskip and \lastpenalty cannot both be nonzero simultaneously.
\skip0 = \lastskip
\edef\lastskipmacro{\the\lastskip}%
\count255 = \lastpenalty
%
% If \lastskip is nonzero, that means the last item was a
% skip.  And since a skip is discardable, that means this
% -\skip0 glue we're inserting is preceded by a
% non-discardable item, therefore it is not a potential
% breakpoint, therefore no \nobreak needed.
\ifx\lastskipmacro\zeroskipmacro
\else
  \vskip-\skip0
\fi
%
\dosubindwrite
%
\ifx\lastskipmacro\zeroskipmacro
  % If \lastskip was zero, perhaps the last item was a penalty, and
  % perhaps it was >=10000, e.g., a \nobreak.  In that case, we want
  % to re-insert the same penalty (values >10000 are used for various
  % signals); since we just inserted a non-discardable item, any
  % following glue (such as a \parskip) would be a breakpoint.  For example:
  % 
  %   @deffn deffn-whatever
  %   @vindex index-whatever
  %   Description.
  % would allow a break between the index-whatever whatsit
  % and the "Description." paragraph.
  \ifnum\count255>9999 \penalty\count255 \fi
\else
  % On the other hand, if we had a nonzero \lastskip,
  % this make-up glue would be preceded by a non-discardable item
  % (the whatsit from the \write), so we must insert a \nobreak.
  \nobreak\vskip\skip0
\fi

}

% The index entry written in the file actually looks like % entry {sortstring}{page}{topic} % or % entry {sortstring}{page}{topic}{subtopic} % The texindex program reads in these files and writes files % containing these kinds of lines: % initial {c} % before the first topic whose initial is c % entry {topic}{pagelist} % for a topic that is used without subtopics % primary {topic} % for the beginning of a topic that is used with subtopics % secondary {subtopic}{pagelist} % for each subtopic.

% Define the user-accessible indexing commands % @findex, @vindex, @kindex, @cindex.

deffindex {fnindex} defkindex {kyindex} defcindex {cpindex} defvindex {vrindex} deftindex {tpindex} defpindex {pgindex}

defcindexsub {begingroupobeylinescindexsub} {obeylines % gdefcindexsub “#1” #2^^M{endgroup % dosubind{cp}{#2}{#1}}}

% Define the macros used in formatting output of the sorted index material.

% @printindex causes a particular index (the ??s file) to get printed. % It does not print any chapter heading (usually an @unnumbered). % parseargdefprintindex{begingroup

\dobreak \chapheadingskip{10000}%
%
\smallfonts \rm
\tolerance = 9500
\everypar = {}% don't want the \kern\-parindent from indentation suppression.
%
% See if the index file exists and is nonempty.
% Change catcode of @ here so that if the index file contains
% \initial {@}
% as its first line, TeX doesn't complain about mismatched braces
% (because it thinks @} is a control sequence).
\catcode`\@ = 11
\openin 1 \jobname.#1s
\ifeof 1
  % \enddoublecolumns gets confused if there is no text in the index,
  % and it loses the chapter title and the aux file entries for the
  % index.  The easiest way to prevent this problem is to make sure
  % there is some text.
  \putwordIndexNonexistent
\else
  %
  % If the index file exists but is empty, then \openin leaves \ifeof
  % false.  We have to make TeX try to read something from the file, so
  % it can discover if there is anything in it.
  \read 1 to \temp
  \ifeof 1
    \putwordIndexIsEmpty
  \else
    % Index files are almost Texinfo source, but we use \ as the escape
    % character.  It would be better to use @, but that's too big a change
    % to make right now.
    \def\indexbackslash{\backslashcurfont}%
    \catcode`\\ = 0
    \escapechar = `\\
    \begindoublecolumns
    \input \jobname.#1s
    \enddoublecolumns
  \fi
\fi
\closein 1

endgroup}

% These macros are used by the sorted index file itself. % Change them to control the appearance of the index.

definitial#1{{%

% Some minor font changes for the special characters.
\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
%
% Remove any glue we may have, we'll be inserting our own.
\removelastskip
%
% We like breaks before the index initials, so insert a bonus.
\nobreak
\vskip 0pt plus 3\baselineskip
\penalty 0
\vskip 0pt plus -3\baselineskip
%
% Typeset the initial.  Making this add up to a whole number of
% baselineskips increases the chance of the dots lining up from column
% to column.  It still won't often be perfect, because of the stretch
% we need before each entry, but it's better.
%
% No shrink because it confuses \balancecolumns.
\vskip 1.67\baselineskip plus .5\baselineskip
\leftline{\secbf #1}%
% Do our best not to break after the initial.
\nobreak
\vskip .33\baselineskip plus .1\baselineskip

}}

% entry typesets a paragraph consisting of the text (#1), dot leaders, and % then page number (#2) flushed to the right margin. It is used for index % and table of contents entries. The paragraph is indented by leftskip. % % A straightforward implementation would start like this: % defentry#1#2{… % But this frozes the catcodes in the argument, and can cause problems to % @code, which sets - active. This problem was fixed by a kludge— % “-'' was active throughout whole index, but this isn't really right. % % The right solution is to prevent entry from swallowing the whole text. % –kasal, 21nov03 defentry{%

\begingroup
  %
  % Start a new paragraph if necessary, so our assignments below can't
  % affect previous text.
  \par
  %
  % Do not fill out the last line with white space.
  \parfillskip = 0in
  %
  % No extra space above this paragraph.
  \parskip = 0in
  %
  % Do not prefer a separate line ending with a hyphen to fewer lines.
  \finalhyphendemerits = 0
  %
  % \hangindent is only relevant when the entry text and page number
  % don't both fit on one line.  In that case, bob suggests starting the
  % dots pretty far over on the line.  Unfortunately, a large
  % indentation looks wrong when the entry text itself is broken across
  % lines.  So we use a small indentation and put up with long leaders.
  %
  % \hangafter is reset to 1 (which is the value we want) at the start
  % of each paragraph, so we need not do anything with that.
  \hangindent = 2em
  %
  % When the entry text needs to be broken, just fill out the first line
  % with blank space.
  \rightskip = 0pt plus1fil
  %
  % A bit of stretch before each entry for the benefit of balancing
  % columns.
  \vskip 0pt plus1pt
  %
  % Swallow the left brace of the text (first parameter):
  \afterassignment\doentry
  \let\temp =

} defdoentry{%

\bgroup % Instead of the swallowed brace.
  \noindent
  \aftergroup\finishentry
  % And now comes the text of the entry.

} deffinishentry#1{%

  % #1 is the page number.
  %
  % The following is kludged to not output a line of dots in the index if
  % there are no page numbers.  The next person who breaks this will be
  % cursed by a Unix daemon.
  \def\tempa{{\rm }}%
  \def\tempb{#1}%
  \edef\tempc{\tempa}%
  \edef\tempd{\tempb}%
  \ifx\tempc\tempd
    \ %
  \else
    %
    % If we must, put the page number on a line of its own, and fill out
    % this line with blank space.  (The \hfil is overwhelmed with the
    % fill leaders glue in \indexdotfill if the page number does fit.)
    \hfil\penalty50
    \null\nobreak\indexdotfill % Have leaders before the page number.
    %
    % The `\ ' here is removed by the implicit \unskip that TeX does as
    % part of (the primitive) \par.  Without it, a spurious underfull
    % \hbox ensues.
    \ifpdf
      \pdfgettoks#1.%
      \ \the\toksA
    \else
      \ #1%
    \fi
  \fi
  \par
\endgroup

}

% Like dotfill except takes at least 1 em. defindexdotfill{cleaders

\hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}

defprimary #1{line{#1hfil}}

newskipsecondaryindent secondaryindent=0.5cm defsecondary#1#2{{%

\parfillskip=0in
\parskip=0in
\hangindent=1in
\hangafter=1
\noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
\ifpdf
  \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
\else
  #2
\fi
\par

}}

% Define two-column mode, which we use to typeset indexes. % Adapted from the TeXbook, page 416, which is to say, % the manmac.tex format used to print the TeXbook itself. catcode`@=11

newboxpartialpage newdimendoublecolumnhsize

defbegindoublecolumns{begingroup % ended by enddoublecolumns

% Grab any single-column material above us.
\output = {%
  %
  % Here is a possibility not foreseen in manmac: if we accumulate a
  % whole lot of material, we might end up calling this \output
  % routine twice in a row (see the doublecol-lose test, which is
  % essentially a couple of indexes with @setchapternewpage off).  In
  % that case we just ship out what is in \partialpage with the normal
  % output routine.  Generally, \partialpage will be empty when this
  % runs and this will be a no-op.  See the indexspread.tex test case.
  \ifvoid\partialpage \else
    \onepageout{\pagecontents\partialpage}%
  \fi
  %
  \global\setbox\partialpage = \vbox{%
    % Unvbox the main output page.
    \unvbox\PAGE
    \kern-\topskip \kern\baselineskip
  }%
}%
\eject % run that output routine to set \partialpage
%
% Use the double-column output routine for subsequent pages.
\output = {\doublecolumnout}%
%
% Change the page size parameters.  We could do this once outside this
% routine, in each of @smallbook, @afourpaper, and the default 8.5x11
% format, but then we repeat the same computation.  Repeating a couple
% of assignments once per index is clearly meaningless for the
% execution time, so we may as well do it in one place.
%
% First we halve the line length, less a little for the gutter between
% the columns.  We compute the gutter based on the line length, so it
% changes automatically with the paper format.  The magic constant
% below is chosen so that the gutter has the same value (well, +-<1pt)
% as it did when we hard-coded it.
%
% We put the result in a separate register, \doublecolumhsize, so we
% can restore it in \pagesofar, after \hsize itself has (potentially)
% been clobbered.
%
\doublecolumnhsize = \hsize
  \advance\doublecolumnhsize by -.04154\hsize
  \divide\doublecolumnhsize by 2
\hsize = \doublecolumnhsize
%
% Double the \vsize as well.  (We don't need a separate register here,
% since nobody clobbers \vsize.)
\vsize = 2\vsize

}

% The double-column output routine for all double-column pages except % the last. % defdoublecolumnout{%

\splittopskip=\topskip \splitmaxdepth=\maxdepth
% Get the available space for the double columns -- the normal
% (undoubled) page height minus any material left over from the
% previous page.
\dimen@ = \vsize
\divide\dimen@ by 2
\advance\dimen@ by -\ht\partialpage
%
% box0 will be the left-hand column, box2 the right.
\setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
\onepageout\pagesofar
\unvbox255
\penalty\outputpenalty

} % % Re-output the contents of the output page – any previous material, % followed by the two boxes we just split, in box0 and box2. defpagesofar{%

\unvbox\partialpage
%
\hsize = \doublecolumnhsize
\wd0=\hsize \wd2=\hsize
\hbox to\pagewidth{\box0\hfil\box2}%

} % % All done with double columns. defenddoublecolumns{%

\output = {%
  % Split the last of the double-column material.  Leave it on the
  % current page, no automatic page break.
  \balancecolumns
  %
  % If we end up splitting too much material for the current page,
  % though, there will be another page break right after this \output
  % invocation ends.  Having called \balancecolumns once, we do not
  % want to call it again.  Therefore, reset \output to its normal
  % definition right away.  (We hope \balancecolumns will never be
  % called on to balance too much material, but if it is, this makes
  % the output somewhat more palatable.)
  \global\output = {\onepageout{\pagecontents\PAGE}}%
}%
\eject
\endgroup % started in \begindoublecolumns
%
% \pagegoal was set to the doubled \vsize above, since we restarted
% the current page.  We're now back to normal single-column
% typesetting, so reset \pagegoal to the normal \vsize (after the
% \endgroup where \vsize got restored).
\pagegoal = \vsize

} % % Called at the end of the double column material. defbalancecolumns{%

\setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120.
\dimen@ = \ht0
\advance\dimen@ by \topskip
\advance\dimen@ by-\baselineskip
\divide\dimen@ by 2 % target to split to
%debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}%
\splittopskip = \topskip
% Loop until we get a decent breakpoint.
{%
  \vbadness = 10000
  \loop
    \global\setbox3 = \copy0
    \global\setbox1 = \vsplit3 to \dimen@
  \ifdim\ht3>\dimen@
    \global\advance\dimen@ by 1pt
  \repeat
}%
%debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}%
\setbox0=\vbox to\dimen@{\unvbox1}%
\setbox2=\vbox to\dimen@{\unvbox3}%
%
\pagesofar

} catcode`@ = other

message{sectioning,} % Chapters, sections, etc.

% unnumberedno is an oxymoron, of course. But we count the unnumbered % sections so that we can refer to them unambiguously in the pdf % outlines by their “section number”. We avoid collisions with chapter % numbers by starting them at 10000. (If a document ever has 10000 % chapters, we're in trouble anyway, I'm sure.) newcountunnumberedno unnumberedno = 10000 newcountchapno newcountsecno secno=0 newcountsubsecno subsecno=0 newcountsubsubsecno subsubsecno=0

% This counter is funny since it counts through charcodes of letters A, B, … newcountappendixno appendixno = `@ % % defappendixletter{chartheappendixno} % We do the following ugly conditional instead of the above simple % construct for the sake of pdftex, which needs the actual % letter in the expansion, not just typeset. % defappendixletter{%

\ifnum\appendixno=`A A%
\else\ifnum\appendixno=`B B%
\else\ifnum\appendixno=`C C%
\else\ifnum\appendixno=`D D%
\else\ifnum\appendixno=`E E%
\else\ifnum\appendixno=`F F%
\else\ifnum\appendixno=`G G%
\else\ifnum\appendixno=`H H%
\else\ifnum\appendixno=`I I%
\else\ifnum\appendixno=`J J%
\else\ifnum\appendixno=`K K%
\else\ifnum\appendixno=`L L%
\else\ifnum\appendixno=`M M%
\else\ifnum\appendixno=`N N%
\else\ifnum\appendixno=`O O%
\else\ifnum\appendixno=`P P%
\else\ifnum\appendixno=`Q Q%
\else\ifnum\appendixno=`R R%
\else\ifnum\appendixno=`S S%
\else\ifnum\appendixno=`T T%
\else\ifnum\appendixno=`U U%
\else\ifnum\appendixno=`V V%
\else\ifnum\appendixno=`W W%
\else\ifnum\appendixno=`X X%
\else\ifnum\appendixno=`Y Y%
\else\ifnum\appendixno=`Z Z%
% The \the is necessary, despite appearances, because \appendixletter is
% expanded while writing the .toc file.  \char\appendixno is not
% expandable, thus it is written literally, thus all appendixes come out
% with the same letter (or @) in the toc without it.
\else\char\the\appendixno
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi}

% Each @chapter defines this as the name of the chapter. % page headings and footings can use it. @section does likewise. % However, they are not reliable, because we don't use marks. defthischapter{} defthissection{}

newcountabsseclevel % used to calculate proper heading level newcountsecbasesecbase=0 % @raisesections/@lowersections modify this count

% @raisesections: treat @section as chapter, @subsection as section, etc. defraisesections{globaladvancesecbase by -1} letup=raisesections % original BFox name

% @lowersections: treat @chapter as section, @section as subsection, etc. deflowersections{globaladvancesecbase by 1} letdown=lowersections % original BFox name

% we only have subsub. chardefmaxseclevel = 3 % % A numbered section within an unnumbered changes to unnumbered too. % To achive this, remember the “biggest” unnum. sec. we are currently in: chardefunmlevel = maxseclevel % % Trace whether the current chapter is an appendix or not: % chapheadtype is “N” or “A”, unnumbered chapters are ignored. defchapheadtype{N}

% Choose a heading macro % #1 is heading type % #2 is heading level % #3 is text for heading defgenhead#1#2#3{%

% Compute the abs. sec. level:
\absseclevel=#2
\advance\absseclevel by \secbase
% Make sure \absseclevel doesn't fall outside the range:
\ifnum \absseclevel < 0
  \absseclevel = 0
\else
  \ifnum \absseclevel > 3
    \absseclevel = 3
  \fi
\fi
% The heading type:
\def\headtype{#1}%
\if \headtype U%
  \ifnum \absseclevel < \unmlevel
    \chardef\unmlevel = \absseclevel
  \fi
\else
  % Check for appendix sections:
  \ifnum \absseclevel = 0
    \edef\chapheadtype{\headtype}%
  \else
    \if \headtype A\if \chapheadtype N%
      \errmessage{@appendix... within a non-appendix chapter}%
    \fi\fi
  \fi
  % Check for numbered within unnumbered:
  \ifnum \absseclevel > \unmlevel
    \def\headtype{U}%
  \else
    \chardef\unmlevel = 3
  \fi
\fi
% Now print the heading:
\if \headtype U%
  \ifcase\absseclevel
      \unnumberedzzz{#3}%
  \or \unnumberedseczzz{#3}%
  \or \unnumberedsubseczzz{#3}%
  \or \unnumberedsubsubseczzz{#3}%
  \fi
\else
  \if \headtype A%
    \ifcase\absseclevel
        \appendixzzz{#3}%
    \or \appendixsectionzzz{#3}%
    \or \appendixsubseczzz{#3}%
    \or \appendixsubsubseczzz{#3}%
    \fi
  \else
    \ifcase\absseclevel
        \chapterzzz{#3}%
    \or \seczzz{#3}%
    \or \numberedsubseczzz{#3}%
    \or \numberedsubsubseczzz{#3}%
    \fi
  \fi
\fi
\suppressfirstparagraphindent

}

% an interface: defnumhead{genhead N} defapphead{genhead A} defunnmhead{genhead U}

% @chapter, @appendix, @unnumbered. Increment top-level counter, reset % all lower-level sectioning counters to zero. % % Also set chaplevelprefix, which we prepend to @float sequence numbers % (e.g., figures), q.v. By default (before any chapter), that is empty. letchaplevelprefix = empty % outerparseargdefchapter{numhead0{#1}} % normally numhead0 calls chapterzzz defchapterzzz#1{%

% section resetting is \global in case the chapter is in a group, such
% as an @include file.
\global\secno=0 \global\subsecno=0 \global\subsubsecno=0
  \global\advance\chapno by 1
%
% Used for \float.
\gdef\chaplevelprefix{\the\chapno.}%
\resetallfloatnos
%
\message{\putwordChapter\space \the\chapno}%
%
% Write the actual heading.
\chapmacro{#1}{Ynumbered}{\the\chapno}%
%
% So @section and the like are numbered underneath this chapter.
\global\let\section = \numberedsec
\global\let\subsection = \numberedsubsec
\global\let\subsubsection = \numberedsubsubsec

}

outerparseargdefappendix{apphead0{#1}} % normally apphead0 calls appendixzzz defappendixzzz#1{%

\global\secno=0 \global\subsecno=0 \global\subsubsecno=0
  \global\advance\appendixno by 1
\gdef\chaplevelprefix{\appendixletter.}%
\resetallfloatnos
%
\def\appendixnum{\putwordAppendix\space \appendixletter}%
\message{\appendixnum}%
%
\chapmacro{#1}{Yappendix}{\appendixletter}%
%
\global\let\section = \appendixsec
\global\let\subsection = \appendixsubsec
\global\let\subsubsection = \appendixsubsubsec

}

outerparseargdefunnumbered{unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz defunnumberedzzz#1{%

\global\secno=0 \global\subsecno=0 \global\subsubsecno=0
  \global\advance\unnumberedno by 1
%
% Since an unnumbered has no number, no prefix for figures.
\global\let\chaplevelprefix = \empty
\resetallfloatnos
%
% This used to be simply \message{#1}, but TeX fully expands the
% argument to \message.  Therefore, if #1 contained @-commands, TeX
% expanded them.  For example, in `@unnumbered The @cite{Book}', TeX
% expanded @cite (which turns out to cause errors because \cite is meant
% to be executed, not expanded).
%
% Anyway, we don't want the fully-expanded definition of @cite to appear
% as a result of the \message, we just want `@cite' itself.  We use
% \the<toks register> to achieve this: TeX expands \the<toks> only once,
% simply yielding the contents of <toks register>.  (We also do this for
% the toc entries.)
\toks0 = {#1}%
\message{(\the\toks0)}%
%
\chapmacro{#1}{Ynothing}{\the\unnumberedno}%
%
\global\let\section = \unnumberedsec
\global\let\subsection = \unnumberedsubsec
\global\let\subsubsection = \unnumberedsubsubsec

}

% @centerchap is like @unnumbered, but the heading is centered. outerparseargdefcenterchap{%

% Well, we could do the following in a group, but that would break
% an assumption that \chapmacro is called at the outermost level.
% Thus we are safer this way:         --kasal, 24feb04
\let\centerparametersmaybe = \centerparameters
\unnmhead0{#1}%
\let\centerparametersmaybe = \relax

}

% @top is like @unnumbered. lettopunnumbered

% Sections. outerparseargdefnumberedsec{numhead1{#1}} % normally calls seczzz defseczzz#1{%

\global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
\sectionheading{#1}{sec}{Ynumbered}{\the\chapno.\the\secno}%

}

outerparseargdefappendixsection{apphead1{#1}} % normally calls appendixsectionzzz defappendixsectionzzz#1{%

\global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
\sectionheading{#1}{sec}{Yappendix}{\appendixletter.\the\secno}%

} letappendixsecappendixsection

outerparseargdefunnumberedsec{unnmhead1{#1}} % normally calls unnumberedseczzz defunnumberedseczzz#1{%

\global\subsecno=0 \global\subsubsecno=0  \global\advance\secno by 1
\sectionheading{#1}{sec}{Ynothing}{\the\unnumberedno.\the\secno}%

}

% Subsections. outerparseargdefnumberedsubsec{numhead2{#1}} % normally calls numberedsubseczzz defnumberedsubseczzz#1{%

\global\subsubsecno=0  \global\advance\subsecno by 1
\sectionheading{#1}{subsec}{Ynumbered}{\the\chapno.\the\secno.\the\subsecno}%

}

outerparseargdefappendixsubsec{apphead2{#1}} % normally calls appendixsubseczzz defappendixsubseczzz#1{%

\global\subsubsecno=0  \global\advance\subsecno by 1
\sectionheading{#1}{subsec}{Yappendix}%
               {\appendixletter.\the\secno.\the\subsecno}%

}

outerparseargdefunnumberedsubsec{unnmhead2{#1}} %normally calls unnumberedsubseczzz defunnumberedsubseczzz#1{%

\global\subsubsecno=0  \global\advance\subsecno by 1
\sectionheading{#1}{subsec}{Ynothing}%
               {\the\unnumberedno.\the\secno.\the\subsecno}%

}

% Subsubsections. outerparseargdefnumberedsubsubsec{numhead3{#1}} % normally numberedsubsubseczzz defnumberedsubsubseczzz#1{%

\global\advance\subsubsecno by 1
\sectionheading{#1}{subsubsec}{Ynumbered}%
               {\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno}%

}

outerparseargdefappendixsubsubsec{apphead3{#1}} % normally appendixsubsubseczzz defappendixsubsubseczzz#1{%

\global\advance\subsubsecno by 1
\sectionheading{#1}{subsubsec}{Yappendix}%
               {\appendixletter.\the\secno.\the\subsecno.\the\subsubsecno}%

}

outerparseargdefunnumberedsubsubsec{unnmhead3{#1}} %normally unnumberedsubsubseczzz defunnumberedsubsubseczzz#1{%

\global\advance\subsubsecno by 1
\sectionheading{#1}{subsubsec}{Ynothing}%
               {\the\unnumberedno.\the\secno.\the\subsecno.\the\subsubsecno}%

}

% These macros control what the section commands do, according % to what kind of chapter we are in (ordinary, appendix, or unnumbered). % Define them by default for a numbered chapter. letsection = numberedsec letsubsection = numberedsubsec letsubsubsection = numberedsubsubsec

% Define @majorheading, @heading and @subheading

% NOTE on use of vbox for chapter headings, section headings, and such: % 1) We use vbox rather than the earlier line to permit % overlong headings to fold. % 2) hyphenpenalty is set to 10000 because hyphenation in a % heading is obnoxious; this forbids it. % 3) Likewise, headings look best if no parindent is used, and % if justification is not attempted. Hence raggedright.

defmajorheading{%

{\advance\chapheadingskip by 10pt \chapbreak }%
\parsearg\chapheadingzzz

}

defchapheading{chapbreak parseargchapheadingzzz} defchapheadingzzz#1{%

{\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
                  \parindent=0pt\raggedright
                  \rm #1\hfill}}%
\bigskip \par\penalty 200\relax
\suppressfirstparagraphindent

}

% @heading, @subheading, @subsubheading. parseargdefheading{sectionheading{#1}{sec}{Yomitfromtoc}{}

\suppressfirstparagraphindent}

parseargdefsubheading{sectionheading{#1}{subsec}{Yomitfromtoc}{}

\suppressfirstparagraphindent}

parseargdefsubsubheading{sectionheading{#1}{subsubsec}{Yomitfromtoc}{}

\suppressfirstparagraphindent}

% These macros generate a chapter, section, etc. heading only % (including whitespace, linebreaking, etc. around it), % given all the information in convenient, parsed form.

%%% Args are the skip and penalty (usually negative) defdobreak#1#2{parifdimlastskip<#1removelastskippenalty#2vskip#1fi}

%%% Define plain chapter starts, and page on/off switching for it % Parameter controlling skip before chapter headings (if needed)

newskipchapheadingskip

defchapbreak{dobreak chapheadingskip {-4000}} defchappager{parvfillsupereject} defchapoddpage{chappager ifoddpageno else hbox to 0pt{} chappagerfi}

defsetchapternewpage #1 {csname CHAPPAG#1endcsname}

defCHAPPAGoff{% globalletcontentsalignmacro = chappager globalletpchapsepmacro=chapbreak globalletpagealignmacro=chappager}

defCHAPPAGon{% globalletcontentsalignmacro = chappager globalletpchapsepmacro=chappager globalletpagealignmacro=chappager globaldefHEADINGSon{HEADINGSsingle}}

defCHAPPAGodd{% globalletcontentsalignmacro = chapoddpage globalletpchapsepmacro=chapoddpage globalletpagealignmacro=chapoddpage globaldefHEADINGSon{HEADINGSdouble}}

CHAPPAGon

% Chapter opening. % % #1 is the text, #2 is the section type (Ynumbered, Ynothing, % Yappendix, Yomitfromtoc), #3 the chapter number. % % To test against our argument. defYnothingkeyword{Ynothing} defYomitfromtockeyword{Yomitfromtoc} defYappendixkeyword{Yappendix} % defchapmacro#1#2#3{%

\pchapsepmacro
{%
  \chapfonts \rm
  %
  % Have to define \thissection before calling \donoderef, because the
  % xref code eventually uses it.  On the other hand, it has to be called
  % after \pchapsepmacro, or the headline will change too soon.
  \gdef\thissection{#1}%
  \gdef\thischaptername{#1}%
  %
  % Only insert the separating space if we have a chapter/appendix
  % number, and don't print the unnumbered ``number''.
  \def\temptype{#2}%
  \ifx\temptype\Ynothingkeyword
    \setbox0 = \hbox{}%
    \def\toctype{unnchap}%
    \gdef\thischapter{#1}%
  \else\ifx\temptype\Yomitfromtockeyword
    \setbox0 = \hbox{}% contents like unnumbered, but no toc entry
    \def\toctype{omit}%
    \gdef\thischapter{}%
  \else\ifx\temptype\Yappendixkeyword
    \setbox0 = \hbox{\putwordAppendix{} #3\enspace}%
    \def\toctype{app}%
    % We don't substitute the actual chapter name into \thischapter
    % because we don't want its macros evaluated now.  And we don't
    % use \thissection because that changes with each section.
    %
    \xdef\thischapter{\putwordAppendix{} \appendixletter:
                      \noexpand\thischaptername}%
  \else
    \setbox0 = \hbox{#3\enspace}%
    \def\toctype{numchap}%
    \xdef\thischapter{\putwordChapter{} \the\chapno:
                      \noexpand\thischaptername}%
  \fi\fi\fi
  %
  % Write the toc entry for this chapter.  Must come before the
  % \donoderef, because we include the current node name in the toc
  % entry, and \donoderef resets it to empty.
  \writetocentry{\toctype}{#1}{#3}%
  %
  % For pdftex, we have to write out the node definition (aka, make
  % the pdfdest) after any page break, but before the actual text has
  % been typeset.  If the destination for the pdf outline is after the
  % text, then jumping from the outline may wind up with the text not
  % being visible, for instance under high magnification.
  \donoderef{#2}%
  %
  % Typeset the actual heading.
  \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
        \hangindent=\wd0 \centerparametersmaybe
        \unhbox0 #1\par}%
}%
\nobreak\bigskip % no page break after a chapter title
\nobreak

}

% @centerchap – centered and unnumbered. letcenterparametersmaybe = relax defcenterparameters{%

\advance\rightskip by 3\rightskip
\leftskip = \rightskip
\parfillskip = 0pt

}

% I don't think this chapter style is supported any more, so I'm not % updating it with the new noderef stuff. We'll see. –karl, 11aug03. % defsetchapterstyle #1 {csname CHAPF#1endcsname} % defunnchfopen #1{% chapoddpage {chapfonts vbox{hyphenpenalty=10000tolerance=5000

\parindent=0pt\raggedright
\rm #1\hfill}}\bigskip \par\nobreak

} defchfopen #1#2{chapoddpage {chapfonts vbox to 3in{vfil hbox tohsize{hfil #2} hbox tohsize{hfil #1} vfil}}% parpenalty 5000 % } defcenterchfopen #1{% chapoddpage {chapfonts vbox{hyphenpenalty=10000tolerance=5000

\parindent=0pt
\hfill {\rm #1}\hfill}}\bigskip \par\nobreak

} defCHAPFopen{%

\global\let\chapmacro=\chfopen
\global\let\centerchapmacro=\centerchfopen}

% Section titles. These macros combine the section number parts and % call the generic sectionheading to do the printing. % newskipsecheadingskip defsecheadingbreak{dobreak secheadingskip{-1000}}

% Subsection titles. newskipsubsecheadingskip defsubsecheadingbreak{dobreak subsecheadingskip{-500}}

% Subsubsection titles. defsubsubsecheadingskip{subsecheadingskip} defsubsubsecheadingbreak{subsecheadingbreak}

% Print any size, any type, section title. % % #1 is the text, #2 is the section level (sec/subsec/subsubsec), #3 is % the section type for xrefs (Ynumbered, Ynothing, Yappendix), #4 is the % section number. % defsectionheading#1#2#3#4{%

{%
  % Switch to the right set of fonts.
  \csname #2fonts\endcsname \rm
  %
  % Insert space above the heading.
  \csname #2headingbreak\endcsname
  %
  % Only insert the space after the number if we have a section number.
  \def\sectionlevel{#2}%
  \def\temptype{#3}%
  %
  \ifx\temptype\Ynothingkeyword
    \setbox0 = \hbox{}%
    \def\toctype{unn}%
    \gdef\thissection{#1}%
  \else\ifx\temptype\Yomitfromtockeyword
    % for @headings -- no section number, don't include in toc,
    % and don't redefine \thissection.
    \setbox0 = \hbox{}%
    \def\toctype{omit}%
    \let\sectionlevel=\empty
  \else\ifx\temptype\Yappendixkeyword
    \setbox0 = \hbox{#4\enspace}%
    \def\toctype{app}%
    \gdef\thissection{#1}%
  \else
    \setbox0 = \hbox{#4\enspace}%
    \def\toctype{num}%
    \gdef\thissection{#1}%
  \fi\fi\fi
  %
  % Write the toc entry (before \donoderef).  See comments in \chfplain.
  \writetocentry{\toctype\sectionlevel}{#1}{#4}%
  %
  % Write the node reference (= pdf destination for pdftex).
  % Again, see comments in \chfplain.
  \donoderef{#3}%
  %
  % Output the actual section heading.
  \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright
        \hangindent=\wd0  % zero if no section number
        \unhbox0 #1}%
}%
% Add extra space after the heading -- half of whatever came above it.
% Don't allow stretch, though.
\kern .5 \csname #2headingskip\endcsname
%
% Do not let the kern be a potential breakpoint, as it would be if it
% was followed by glue.
\nobreak
%
% We'll almost certainly start a paragraph next, so don't let that
% glue accumulate.  (Not a breakpoint because it's preceded by a
% discardable item.)
\vskip-\parskip
% 
% This is purely so the last item on the list is a known \penalty >
% 10000.  This is so \startdefun can avoid allowing breakpoints after
% section headings.  Otherwise, it would insert a valid breakpoint between:
% 
%   @section sec-whatever
%   @deffn def-whatever
\penalty 10001

}

message{toc,} % Table of contents. newwritetocfile

% Write an entry to the toc file, opening it if necessary. % Called from @chapter, etc. % % Example usage: writetocentry{sec}{Section Name}{thechapno.thesecno} % We append the current node name (if any) and page number as additional % arguments for the {chap,sec,…}entry macros which will eventually % read this. The node name is used in the pdf outlines as the % destination to jump to. % % We open the .toc file for writing here instead of at @setfilename (or % any other fixed time) so that @contents can be anywhere in the document. % But if #1 is `omit', then we don't do anything. This is used for the % table of contents chapter openings themselves. % newififtocfileopened defomitkeyword{omit}% % defwritetocentry#1#2#3{%

\edef\writetoctype{#1}%
\ifx\writetoctype\omitkeyword \else
  \iftocfileopened\else
    \immediate\openout\tocfile = \jobname.toc
    \global\tocfileopenedtrue
  \fi
  %
  \iflinks
    {\atdummies
     \edef\temp{%
       \write\tocfile{@#1entry{#2}{#3}{\lastnode}{\noexpand\folio}}}%
     \temp
    }
  \fi
\fi
%
% Tell \shipout to create a pdf destination on each page, if we're
% writing pdf.  These are used in the table of contents.  We can't
% just write one on every page because the title pages are numbered
% 1 and 2 (the page numbers aren't printed), and so are the first
% two pages of the document.  Thus, we'd have two destinations named
% `1', and two named `2'.
\ifpdf \global\pdfmakepagedesttrue \fi

}

% These characters do not print properly in the Computer Modern roman % fonts, so we must take special care. This is more or less redundant % with the Texinfo input format setup at the end of this file. % defactivecatcodes{%

\catcode`\"=\active
\catcode`\$=\active
\catcode`\<=\active
\catcode`\>=\active
\catcode`\\=\active
\catcode`\^=\active
\catcode`\_=\active
\catcode`\|=\active
\catcode`\~=\active

}

% Read the toc file, which is essentially Texinfo input. defreadtocfile{%

\setupdatafile
\activecatcodes
\input \jobname.toc

}

newskipcontentsrightmargin contentsrightmargin=1in newcountsavepageno newcountlastnegativepageno lastnegativepageno = -1

% Prepare to read what we've written to tocfile. % defstartcontents#1{%

% If @setchapternewpage on, and @headings double, the contents should
% start on an odd page, unlike chapters.  Thus, we maintain
% \contentsalignmacro in parallel with \pagealignmacro.
% From: Torbjorn Granlund <tege@matematik.su.se>
\contentsalignmacro
\immediate\closeout\tocfile
%
% Don't need to put `Contents' or `Short Contents' in the headline.
% It is abundantly clear what they are.
\def\thischapter{}%
\chapmacro{#1}{Yomitfromtoc}{}%
%
\savepageno = \pageno
\begingroup                  % Set up to handle contents files properly.
  \raggedbottom              % Worry more about breakpoints than the bottom.
  \advance\hsize by -\contentsrightmargin % Don't use the full line length.
  %
  % Roman numerals for page numbers.
  \ifnum \pageno>0 \global\pageno = \lastnegativepageno \fi

}

% Normal (long) toc. defcontents{%

\startcontents{\putwordTOC}%
  \openin 1 \jobname.toc
  \ifeof 1 \else
    \readtocfile
  \fi
  \vfill \eject
  \contentsalignmacro % in case @setchapternewpage odd is in effect
  \ifeof 1 \else
    \pdfmakeoutlines
  \fi
  \closein 1
\endgroup
\lastnegativepageno = \pageno
\global\pageno = \savepageno

}

% And just the chapters. defsummarycontents{%

\startcontents{\putwordShortTOC}%
  %
  \let\numchapentry = \shortchapentry
  \let\appentry = \shortchapentry
  \let\unnchapentry = \shortunnchapentry
  % We want a true roman here for the page numbers.
  \secfonts
  \let\rm=\shortcontrm \let\bf=\shortcontbf
  \let\sl=\shortcontsl \let\tt=\shortconttt
  \rm
  \hyphenpenalty = 10000
  \advance\baselineskip by 1pt % Open it up a little.
  \def\numsecentry##1##2##3##4{}
  \let\appsecentry = \numsecentry
  \let\unnsecentry = \numsecentry
  \let\numsubsecentry = \numsecentry
  \let\appsubsecentry = \numsecentry
  \let\unnsubsecentry = \numsecentry
  \let\numsubsubsecentry = \numsecentry
  \let\appsubsubsecentry = \numsecentry
  \let\unnsubsubsecentry = \numsecentry
  \openin 1 \jobname.toc
  \ifeof 1 \else
    \readtocfile
  \fi
  \closein 1
  \vfill \eject
  \contentsalignmacro % in case @setchapternewpage odd is in effect
\endgroup
\lastnegativepageno = \pageno
\global\pageno = \savepageno

} letshortcontents = summarycontents

% Typeset the label for a chapter or appendix for the short contents. % The arg is, e.g., `A' for an appendix, or `3' for a chapter. % defshortchaplabel#1{%

% This space should be enough, since a single number is .5em, and the
% widest letter (M) is 1em, at least in the Computer Modern fonts.
% But use \hss just in case.
% (This space doesn't include the extra space that gets added after
% the label; that gets put in by \shortchapentry above.)
%
% We'd like to right-justify chapter numbers, but that looks strange
% with appendix letters.  And right-justifying numbers and
% left-justifying letters looks strange when there is less than 10
% chapters.  Have to read the whole toc once to know how many chapters
% there are before deciding ...
\hbox to 1em{#1\hss}%

}

% These macros generate individual entries in the table of contents. % The first argument is the chapter or section name. % The last argument is the page number. % The arguments in between are the chapter number, section number, …

% Chapters, in the main contents. defnumchapentry#1#2#3#4{dochapentry{#2labelspace#1}{#4}} % % Chapters, in the short toc. % See comments in dochapentry re vbox and related settings. defshortchapentry#1#2#3#4{%

\tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#4\egroup}%

}

% Appendices, in the main contents. % Need the word Appendix, and a fixed-size box. % defappendixbox#1{%

% We use M since it's probably the widest letter.
\setbox0 = \hbox{\putwordAppendix{} M}%
\hbox to \wd0{\putwordAppendix{} #1\hss}}

% defappentry#1#2#3#4{dochapentry{appendixbox{#2}labelspace#1}{#4}}

% Unnumbered chapters. defunnchapentry#1#2#3#4{dochapentry{#1}{#4}} defshortunnchapentry#1#2#3#4{tocentry{#1}{doshortpagenobgroup#4egroup}}

% Sections. defnumsecentry#1#2#3#4{dosecentry{#2labelspace#1}{#4}} letappsecentry=numsecentry defunnsecentry#1#2#3#4{dosecentry{#1}{#4}}

% Subsections. defnumsubsecentry#1#2#3#4{dosubsecentry{#2labelspace#1}{#4}} letappsubsecentry=numsubsecentry defunnsubsecentry#1#2#3#4{dosubsecentry{#1}{#4}}

% And subsubsections. defnumsubsubsecentry#1#2#3#4{dosubsubsecentry{#2labelspace#1}{#4}} letappsubsubsecentry=numsubsubsecentry defunnsubsubsecentry#1#2#3#4{dosubsubsecentry{#1}{#4}}

% This parameter controls the indentation of the various levels. % Same as defaultparindent. newdimentocindent tocindent = 15pt

% Now for the actual typesetting. In all these, #1 is the text and #2 is the % page number. % % If the toc has to be broken over pages, we want it to be at chapters % if at all possible; hence the penalty. defdochapentry#1#2{%

\penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip
\begingroup
  \chapentryfonts
  \tocentry{#1}{\dopageno\bgroup#2\egroup}%
\endgroup
\nobreak\vskip .25\baselineskip plus.1\baselineskip

}

defdosecentry#1#2{begingroup

\secentryfonts \leftskip=\tocindent
\tocentry{#1}{\dopageno\bgroup#2\egroup}%

endgroup}

defdosubsecentry#1#2{begingroup

\subsecentryfonts \leftskip=2\tocindent
\tocentry{#1}{\dopageno\bgroup#2\egroup}%

endgroup}

defdosubsubsecentry#1#2{begingroup

\subsubsecentryfonts \leftskip=3\tocindent
\tocentry{#1}{\dopageno\bgroup#2\egroup}%

endgroup}

% We use the same entry macro as for the index entries. lettocentry = entry

% Space between chapter (or whatever) number and the title. deflabelspace{hskip1em relax}

defdopageno#1{{rm #1}} defdoshortpageno#1{{rm #1}}

defchapentryfonts{secfonts rm} defsecentryfonts{textfonts} defsubsecentryfonts{textfonts} defsubsubsecentryfonts{textfonts}

message{environments,} % @foo … @end foo.

% @point{}, @result{}, @expansion{}, @print{}, @equiv{}. % % Since these characters are used in examples, it should be an even number of % tt widths. Each tt character is 1en, so two makes it 1em. % defpoint{$star$} defresult{leavevmoderaise.15exhbox to 1em{hfil$Rightarrow$hfil}} defexpansion{leavevmoderaise.1exhbox to 1em{hfil$mapsto$hfil}} defprint{leavevmodelower.1exhbox to 1em{hfil$dashv$hfil}} defequiv{leavevmodelower.1exhbox to 1em{hfil$ptexequiv$hfil}}

% The @error{} command. % Adapted from the TeXbook's boxit. % newboxerrorbox % {tentt globaldimen0 = 3em}% Width of the box. dimen2 = .55pt % Thickness of rules % The text. (`r' is open on the right, `e' somewhat less so on the left.) setbox0 = hbox{kern-.75pt tensf errorkern-1.5pt} % setboxerrorbox=hbox to dimen0{hfil

\hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
\advance\hsize by -2\dimen2 % Rules.
\vbox{%
   \hrule height\dimen2
   \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
      \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
      \kern3pt\vrule width\dimen2}% Space to right.
   \hrule height\dimen2}
 \hfil}

% deferror{leavevmodelower.7excopyerrorbox}

% @tex … @end tex escapes into raw Tex temporarily. % One exception: @ is still an escape character, so that @end tex works. % But \ or @@ will get a plain tex @ character.

envdeftex{%

\catcode `\\=0 \catcode `\{=1 \catcode `\}=2
\catcode `\$=3 \catcode `\&=4 \catcode `\#=6
\catcode `\^=7 \catcode `\_=8 \catcode `\~=\active \let~=\tie
\catcode `\%=14
\catcode `\+=\other
\catcode `\"=\other
\catcode `\|=\other
\catcode `\<=\other
\catcode `\>=\other
\escapechar=`\\
%
\let\b=\ptexb
\let\bullet=\ptexbullet
\let\c=\ptexc
\let\,=\ptexcomma
\let\.=\ptexdot
\let\dots=\ptexdots
\let\equiv=\ptexequiv
\let\!=\ptexexclam
\let\i=\ptexi
\let\indent=\ptexindent
\let\noindent=\ptexnoindent
\let\{=\ptexlbrace
\let\+=\tabalign
\let\}=\ptexrbrace
\let\/=\ptexslash
\let\*=\ptexstar
\let\t=\ptext
\let\frenchspacing=\plainfrenchspacing
%
\def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}%
\def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}%
\def\@{@}%

} % There is no need to define Etex.

% Define @lisp … @end lisp. % @lisp environment forms a group so it can rebind things, % including the definition of @end lisp (which normally is erroneous).

% Amount to narrow the margins by for @lisp. newskiplispnarrowing lispnarrowing=0.4in

% This is the definition that ^^M gets inside @lisp, @example, and other % such environments. null is better than a space, since it doesn't % have any width. deflisppar{nullendgraf}

% This space is always present above and below environments. newskipenvskipamount envskipamount = 0pt

% Make spacing and below environment symmetrical. We use parskip here % to help in doing that, since in @example-like environments parskip % is reset to zero; thus the afterenvbreak inserts no space – but the % start of the next paragraph will insert parskip. % defaboveenvbreak{{%

% =10000 instead of <10000 because of a special case in \itemzzz and
% \sectionheading, q.v.
\ifnum \lastpenalty=10000 \else
  \advance\envskipamount by \parskip
  \endgraf
  \ifdim\lastskip<\envskipamount
    \removelastskip
    % it's not a good place to break if the last penalty was \nobreak
    % or better ...
    \ifnum\lastpenalty<10000 \penalty-50 \fi
    \vskip\envskipamount
  \fi
\fi

}}

letafterenvbreak = aboveenvbreak

% nonarrowing is a flag. If “set”, @lisp etc don't narrow margins; it will % also clear it, so that its embedded environments do the narrowing again. letnonarrowing=relax

% @cartouche … @end cartouche: draw rectangle w/rounded corners around % environment contents. fontcircle=lcircle10 newdimencircthick newdimencartouternewdimencartinner newskipnormbskipnewskipnormpskipnewskipnormlskip circthick=fontdimen8circle % defctl{{circlechar'013hskip -6pt}}% 6pt from pl file: 1/2charwidth defctr{{hskip 6ptcirclechar'010}} defcbl{{circlechar'012hskip -6pt}} defcbr{{hskip 6ptcirclechar'011}} defcarttop{hbox to cartouter{hskiplskip

\ctl\leaders\hrule height\circthick\hfil\ctr
\hskip\rskip}}

defcartbot{hbox to cartouter{hskiplskip

\cbl\leaders\hrule height\circthick\hfil\cbr
\hskip\rskip}}

% newskiplskipnewskiprskip

envdefcartouche{%

\ifhmode\par\fi  % can't be in the midst of a paragraph.
\startsavinginserts
\lskip=\leftskip \rskip=\rightskip
\leftskip=0pt\rightskip=0pt % we want these *outside*.
\cartinner=\hsize \advance\cartinner by-\lskip
\advance\cartinner by-\rskip
\cartouter=\hsize
\advance\cartouter by 18.4pt  % allow for 3pt kerns on either
                              % side, and for 6pt waste from
                              % each corner char, and rule thickness
\normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
% Flag to tell @lisp, etc., not to narrow margin.
\let\nonarrowing = t%
\vbox\bgroup
    \baselineskip=0pt\parskip=0pt\lineskip=0pt
    \carttop
    \hbox\bgroup
        \hskip\lskip
        \vrule\kern3pt
        \vbox\bgroup
            \kern3pt
            \hsize=\cartinner
            \baselineskip=\normbskip
            \lineskip=\normlskip
            \parskip=\normpskip
            \vskip -\parskip
            \comment % For explanation, see the end of \def\group.

} defEcartouche{%

            \ifhmode\par\fi
            \kern3pt
        \egroup
        \kern3pt\vrule
        \hskip\rskip
    \egroup
    \cartbot
\egroup
\checkinserts

}

% This macro is called at the beginning of all the @example variants, % inside a group. defnonfillstart{%

\aboveenvbreak
\hfuzz = 12pt % Don't be fussy
\sepspaces % Make spaces be word-separators rather than space tokens.
\let\par = \lisppar % don't ignore blank lines
\obeylines % each line of input is a line of output
\parskip = 0pt
\parindent = 0pt
\emergencystretch = 0pt % don't try to avoid overfull boxes
\ifx\nonarrowing\relax
  \advance \leftskip by \lispnarrowing
  \exdentamount=\lispnarrowing
\else
  \let\nonarrowing = \relax
\fi
\let\exdent=\nofillexdent

}

% If you want all examples etc. small: @set dispenvsize small. % If you want even small examples the full size: @set dispenvsize nosmall. % This affects the following displayed environments: % @example, @display, @format, @lisp % defsmallword{small} defnosmallword{nosmall} letSETdispenvsizerelax defsetnormaldispenv{%

\ifx\SETdispenvsize\smallword
  \smallexamplefonts \rm
\fi

} defsetsmalldispenv{%

\ifx\SETdispenvsize\nosmallword
\else
  \smallexamplefonts \rm
\fi

}

% We often define two environments, @foo and @smallfoo. % Let's do it by one command: defmakedispenv #1#2{

\expandafter\envdef\csname#1\endcsname {\setnormaldispenv #2}
\expandafter\envdef\csname small#1\endcsname {\setsmalldispenv #2}
\expandafter\let\csname E#1\endcsname \afterenvbreak
\expandafter\let\csname Esmall#1\endcsname \afterenvbreak

}

% Define two synonyms: defmaketwodispenvs #1#2#3{

\makedispenv{#1}{#3}
\makedispenv{#2}{#3}

}

% @lisp: indented, narrowed, typewriter font; @example: same as @lisp. % % @smallexample and @smalllisp: use smaller fonts. % Originally contributed by xerox at Pavel. % maketwodispenvs {lisp}{example}{%

\nonfillstart
\tt
\let\kbdfont = \kbdexamplefont % Allow @kbd to do something special.
\gobble       % eat return

}

% @display/@smalldisplay: same as @lisp except keep current font. % makedispenv {display}{%

\nonfillstart
\gobble

}

% @format/@smallformat: same as @display except don't narrow margins. % makedispenv{format}{%

\let\nonarrowing = t%
\nonfillstart
\gobble

}

% @flushleft: same as @format, but doesn't obey SETdispenvsize. envdefflushleft{%

\let\nonarrowing = t%
\nonfillstart
\gobble

} letEflushleft = afterenvbreak

% @flushright. % envdefflushright{%

\let\nonarrowing = t%
\nonfillstart
\advance\leftskip by 0pt plus 1fill
\gobble

} letEflushright = afterenvbreak

% @quotation does normal linebreaking (hence we can't use nonfillstart) % and narrows the margins. We keep parskip nonzero in general, since % we're doing normal filling. So, when using aboveenvbreak and % afterenvbreak, temporarily make parskip 0. % envdefquotation{%

{\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
\parindent=0pt
%
% @cartouche defines \nonarrowing to inhibit narrowing at next level down.
\ifx\nonarrowing\relax
  \advance\leftskip by \lispnarrowing
  \advance\rightskip by \lispnarrowing
  \exdentamount = \lispnarrowing
\else
  \let\nonarrowing = \relax
\fi
\parsearg\quotationlabel

}

% We have retained a nonzero parskip for the environment, since we're % doing normal filling. % defEquotation{%

\par
\ifx\quotationauthor\undefined\else
  % indent a bit.
  \leftline{\kern 2\leftskip \sl ---\quotationauthor}%
\fi
{\parskip=0pt \afterenvbreak}%

}

% If we're given an argument, typeset it in bold with a colon after. defquotationlabel#1{%

\def\temp{#1}%
\ifx\temp\empty \else
  {\bf #1: }%
\fi

}

% LaTeX-like @verbatim…@end verbatim and @verb{<char>…<char>} % If we want to allow any <char> as delimiter, % we need the curly braces so that makeinfo sees the @verb command, eg: % `@verbx…x' would look like the '@verbx' command. –janneke@gnu.org % % [Knuth]: Donald Ervin Knuth, 1996. The TeXbook. % % [Knuth] p.344; only we need to do the other characters Texinfo sets % active too. Otherwise, they get lost as the first character on a % verbatim line. defdospecials{%

\do\ \do\\\do\{\do\}\do\$\do\&%
\do\#\do\^\do\^^K\do\_\do\^^A\do\%\do\~%
\do\<\do\>\do\|\do\@\do+\do\"%

} % % [Knuth] p. 380 defuncatcodespecials{%

\def\do##1{\catcode`##1=\other}\dospecials}

% % [Knuth] pp. 380,381,391 % Disable Spanish ligatures ?` and !` of tt font begingroup

\catcode`\`=\active\gdef`{\relax\lq}

endgroup % % Setup for the @verb command. % % Eight spaces for a tab begingroup

\catcode`\^^I=\active
\gdef\tabeightspaces{\catcode`\^^I=\active\def^^I{\ \ \ \ \ \ \ \ }}

endgroup % defsetupverb{%

\tt  % easiest (and conventionally used) font for verbatim
\def\par{\leavevmode\endgraf}%
\catcode`\`=\active
\tabeightspaces
% Respect line breaks,
% print special symbols as themselves, and
% make each space count
% must do in this order:
\obeylines \uncatcodespecials \sepspaces

}

% Setup for the @verbatim environment % % Real tab expansion newdimentabw setbox0=hbox{ttspace} tabw=8wd0 % tab amount % defstarttabbox{setbox0=hboxbgroup} begingroup

\catcode`\^^I=\active
\gdef\tabexpand{%
  \catcode`\^^I=\active
  \def^^I{\leavevmode\egroup
    \dimen0=\wd0 % the width so far, or since the previous tab
    \divide\dimen0 by\tabw
    \multiply\dimen0 by\tabw % compute previous multiple of \tabw
    \advance\dimen0 by\tabw  % advance to next multiple of \tabw
    \wd0=\dimen0 \box0 \starttabbox
  }%
}

endgroup defsetupverbatim{%

\let\nonarrowing = t%
\nonfillstart
% Easiest (and conventionally used) font for verbatim
\tt
\def\par{\leavevmode\egroup\box0\endgraf}%
\catcode`\`=\active
\tabexpand
% Respect line breaks,
% print special symbols as themselves, and
% make each space count
% must do in this order:
\obeylines \uncatcodespecials \sepspaces
\everypar{\starttabbox}%

}

% Do the @verb magic: verbatim text is quoted by unique % delimiter characters. Before first delimiter expect a % right brace, after last delimiter expect closing brace: % % defdoverb'{'<char>#1<char>'}'{#1} % % [Knuth] p. 382; only eat outer {} begingroup

\catcode`[=1\catcode`]=2\catcode`\{=\other\catcode`\}=\other
\gdef\doverb{#1[\def\next##1#1}[##1\endgroup]\next]

endgroup % defverb{begingroupsetupverbdoverb} % % % Do the @verbatim magic: define the macro doverbatim so that % the (first) argument ends when '@end verbatim' is reached, ie: % % defdoverbatim#1@end verbatim{#1} % % For Texinfo it's a lot easier than for LaTeX, % because texinfo's verbatim doesn't stop at 'end{verbatim}': % we need not redefine '', '{' and '}'. % % Inspired by LaTeX's verbatim command set [latex.ltx] % begingroup

\catcode`\ =\active
\obeylines %
% ignore everything up to the first ^^M, that's the newline at the end
% of the @verbatim input line itself.  Otherwise we get an extra blank
% line in the output.
\xdef\doverbatim#1^^M#2@end verbatim{#2\noexpand\end\gobble verbatim}%
% We really want {...\end verbatim} in the body of the macro, but
% without the active space; thus we have to use \xdef and \gobble.

endgroup % envdefverbatim{%

\setupverbatim\doverbatim

} letEverbatim = afterenvbreak

% @verbatiminclude FILE - insert text of file in verbatim environment. % defverbatiminclude{parseargusingfilenamecatcodesdoverbatiminclude} % defdoverbatiminclude#1{%

{%
  \makevalueexpandable
  \setupverbatim
  \input #1
  \afterenvbreak
}%

}

% @copying … @end copying. % Save the text away for @insertcopying later. % % We save the uninterpreted tokens, rather than creating a box. % Saving the text in a box would be much easier, but then all the % typesetting commands (@smallbook, font changes, etc.) have to be done % beforehand – and a) we want @copying to be done first in the source % file; b) letting users define the frontmatter in as flexible order as % possible is very desirable. % defcopying{checkenv{}begingroupscanargctxtdocopying} defdocopying#1@end copying{endgroupdefcopyingtext{#1}} % definsertcopying{%

\begingroup
  \parindent = 0pt  % paragraph indentation looks wrong on title page
  \scanexp\copyingtext
\endgroup

}

message{defuns,} % @defun etc.

newskipdefbodyindent defbodyindent=.4in newskipdefargsindent defargsindent=50pt newskipdeflastargmargin deflastargmargin=18pt

% Start the processing of @deffn: defstartdefun{%

\ifnum\lastpenalty<10000
  \medbreak
\else
  % If there are two @def commands in a row, we'll have a \nobreak,
  % which is there to keep the function description together with its
  % header.  But if there's nothing but headers, we need to allow a
  % break somewhere.  Check specifically for penalty 10002, inserted
  % by \defargscommonending, instead of 10000, since the sectioning
  % commands also insert a nobreak penalty, and we don't want to allow
  % a break between a section heading and a defun.
  % 
  \ifnum\lastpenalty=10002 \penalty2000 \fi
  %
  % Similarly, after a section heading, do not allow a break.
  % But do insert the glue.
  \medskip  % preceded by discardable penalty, so not a breakpoint
\fi
%
\parindent=0in
\advance\leftskip by \defbodyindent
\exdentamount=\defbodyindent

}

defdodefunx#1{%

% First, check whether we are in the right environment:
\checkenv#1%
%
% As above, allow line break if we have multiple x headers in a row.
% It's not a great place, though.
\ifnum\lastpenalty=10002 \penalty3000 \fi
%
% And now, it's time to reuse the body of the original defun:
\expandafter\gobbledefun#1%

} defgobbledefun#1startdefun{}

% printdefunline deffnheader{text} % defprintdefunline#1#2{%

\begingroup
  % call \deffnheader:
  #1#2 \endheader
  % common ending:
  \interlinepenalty = 10000
  \advance\rightskip by 0pt plus 1fil
  \endgraf
  \nobreak\vskip -\parskip
  \penalty 10002  % signal to \startdefun and \dodefunx
  % Some of the @defun-type tags do not enable magic parentheses,
  % rendering the following check redundant.  But we don't optimize.
  \checkparencounts
\endgroup

}

defEdefun{endgrafmedbreak}

% makedefun{deffn} creates deffn, deffnx and Edeffn; % the only thing remainnig is to define deffnheader. % defmakedefun#1{%

\expandafter\let\csname E#1\endcsname = \Edefun
\edef\temp{\noexpand\domakedefun
  \makecsname{#1}\makecsname{#1x}\makecsname{#1header}}%
\temp

}

% domakedefun deffn deffnx deffnheader % % Define deffn and deffnx, without parameters. % deffnheader has to be defined explicitly. % defdomakedefun#1#2#3{%

\envdef#1{%
  \startdefun
  \parseargusing\activeparens{\printdefunline#3}%
}%
\def#2{\dodefunx#1}%
\def#3%

}

%%% Untyped functions:

% @deffn category name args makedefun{deffn}{deffngeneral{}}

% @deffn category class name args makedefun{defop}#1 {defopon{#1\ putwordon}}

% defopon {category on}class name args defdefopon#1#2 {deffngeneral{putwordon\ code{#2}}{#1\ code{#2}} }

% deffngeneral {subind}category name args % defdeffngeneral#1#2 #3 #4endheader{%

% Remember that \dosubind{fn}{foo}{} is equivalent to \doind{fn}{foo}.
\dosubind{fn}{\code{#3}}{#1}%
\defname{#2}{}{#3}\magicamp\defunargs{#4\unskip}%

}

%%% Typed functions:

% @deftypefn category type name args makedefun{deftypefn}{deftypefngeneral{}}

% @deftypeop category class type name args makedefun{deftypeop}#1 {deftypeopon{#1\ putwordon}}

% deftypeopon {category on}class type name args defdeftypeopon#1#2 {deftypefngeneral{putwordon\ code{#2}}{#1\ code{#2}} }

% deftypefngeneral {subind}category type name args % defdeftypefngeneral#1#2 #3 #4 #5endheader{%

\dosubind{fn}{\code{#4}}{#1}%
\defname{#2}{#3}{#4}\defunargs{#5\unskip}%

}

%%% Typed variables:

% @deftypevr category type var args makedefun{deftypevr}{deftypecvgeneral{}}

% @deftypecv category class type var args makedefun{deftypecv}#1 {deftypecvof{#1\ putwordof}}

% deftypecvof {category of}class type var args defdeftypecvof#1#2 {deftypecvgeneral{putwordof\ code{#2}}{#1\ code{#2}} }

% deftypecvgeneral {subind}category type var args % defdeftypecvgeneral#1#2 #3 #4 #5endheader{%

\dosubind{vr}{\code{#4}}{#1}%
\defname{#2}{#3}{#4}\defunargs{#5\unskip}%

}

%%% Untyped variables:

% @defvr category var args makedefun{defvr}#1 {deftypevrheader{#1} {} }

% @defcv category class var args makedefun{defcv}#1 {defcvof{#1\ putwordof}}

% defcvof {category of}class var args defdefcvof#1#2 {deftypecvof{#1}#2 {} }

%%% Type: % @deftp category name args makedefun{deftp}#1 #2 #3endheader{%

\doind{tp}{\code{#2}}%
\defname{#1}{}{#2}\defunargs{#3\unskip}%

}

% Remaining @defun-like shortcuts: makedefun{defun}{deffnheader{putwordDeffunc} } makedefun{defmac}{deffnheader{putwordDefmac} } makedefun{defspec}{deffnheader{putwordDefspec} } makedefun{deftypefun}{deftypefnheader{putwordDeffunc} } makedefun{defvar}{defvrheader{putwordDefvar} } makedefun{defopt}{defvrheader{putwordDefopt} } makedefun{deftypevar}{deftypevrheader{putwordDefvar} } makedefun{defmethod}{defoponputwordMethodon} makedefun{deftypemethod}{deftypeoponputwordMethodon} makedefun{defivar}{defcvofputwordInstanceVariableof} makedefun{deftypeivar}{deftypecvofputwordInstanceVariableof}

% defname, which formats the name of the @def (not the args). % #1 is the category, such as “Function”. % #2 is the return type, if any. % #3 is the function name. % % We are followed by (but not passed) the arguments, if any. % defdefname#1#2#3{%

% Get the values of \leftskip and \rightskip as they were outside the @def...
\advance\leftskip by -\defbodyindent
%
% How we'll format the type name.  Putting it in brackets helps
% distinguish it from the body text that may end up on the next line
% just below it.
\def\temp{#1}%
\setbox0=\hbox{\kern\deflastargmargin \ifx\temp\empty\else [\rm\temp]\fi}
%
% Figure out line sizes for the paragraph shape.
% The first line needs space for \box0; but if \rightskip is nonzero,
% we need only space for the part of \box0 which exceeds it:
\dimen0=\hsize  \advance\dimen0 by -\wd0  \advance\dimen0 by \rightskip
% The continuations:
\dimen2=\hsize  \advance\dimen2 by -\defargsindent
% (plain.tex says that \dimen1 should be used only as global.)
\parshape 2 0in \dimen0 \defargsindent \dimen2
%
% Put the type name to the right margin.
\noindent
\hbox to 0pt{%
  \hfil\box0 \kern-\hsize
  % \hsize has to be shortened this way:
  \kern\leftskip
  % Intentionally do not respect \rightskip, since we need the space.
}%
%
% Allow all lines to be underfull without complaint:
\tolerance=10000 \hbadness=10000
\exdentamount=\defbodyindent
{%
  % defun fonts. We use typewriter by default (used to be bold) because:
  % . we're printing identifiers, they should be in tt in principle.
  % . in languages with many accents, such as Czech or French, it's
  %   common to leave accents off identifiers.  The result looks ok in
  %   tt, but exceedingly strange in rm.
  % . we don't want -- and --- to be treated as ligatures.
  % . this still does not fix the ?` and !` ligatures, but so far no
  %   one has made identifiers using them :).
  \df \tt
  \def\temp{#2}% return value type
  \ifx\temp\empty\else \tclose{\temp} \fi
  #3% output function name
}%
{\rm\enskip}% hskip 0.5 em of \tenrm
%
\boldbrax
% arguments will be output next, if any.

}

% Print arguments in slanted roman (not ttsl), inconsistently with using % tt for the name. This is because literal text is sometimes needed in % the argument list (groff manual), and ttsl and tt are not very % distinguishable. Prevent hyphenation at `-' chars. % defdefunargs#1{%

% use sl by default (not ttsl),
% tt for the names.
\df \sl \hyphenchar\font=0
%
% On the other hand, if an argument has two dashes (for instance), we
% want a way to get ttsl.  Let's try @var for that.
\let\var=\ttslanted
#1%
\sl\hyphenchar\font=45

}

% We want ()&[] to print specially on the defun line. % defactiveparens{%

\catcode`\(=\active \catcode`\)=\active
\catcode`\[=\active \catcode`\]=\active
\catcode`\&=\active

}

% Make control sequences which act like normal parenthesis chars. letlparen = ( letrparen = )

% Be sure that we always have a definition for `(', etc. For example, % if the fn name has parens in it, boldbrax will not be in effect yet, % so TeX would otherwise complain about undefined control sequence. {

\activeparens
\global\let(=\lparen \global\let)=\rparen
\global\let[=\lbrack \global\let]=\rbrack
\global\let& = \&

\gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
\gdef\magicamp{\let&=\amprm}

}

newcountparencount

% If we encounter &foo, then turn on ()-hacking afterwards newififampseen defamprm#1 {ampseentrue{bf&#1 }}

defparenfont{%

\ifampseen
  % At the first level, print parens in roman,
  % otherwise use the default font.
  \ifnum \parencount=1 \rm \fi
\else
  % The \sf parens (in \boldbrax) actually are a little bolder than
  % the contained text.  This is especially needed for [ and ] .
  \sf
\fi

} definfirstlevel#1{%

\ifampseen
  \ifnum\parencount=1
    #1%
  \fi
\fi

} defbfafterword#1 {#1 bf}

defopnr{%

\global\advance\parencount by 1
{\parenfont(}%
\infirstlevel \bfafterword

} defclnr{%

{\parenfont)}%
\infirstlevel \sl
\global\advance\parencount by -1

}

newcountbrackcount deflbrb{%

\global\advance\brackcount by 1
{\bf[}%

} defrbrb{%

{\bf]}%
\global\advance\brackcount by -1

}

defcheckparencounts{%

\ifnum\parencount=0 \else \badparencount \fi
\ifnum\brackcount=0 \else \badbrackcount \fi

} defbadparencount{%

\errmessage{Unbalanced parentheses in @def}%
\global\parencount=0

} defbadbrackcount{%

\errmessage{Unbalanced square braces in @def}%
\global\brackcount=0

}

message{macros,} % @macro.

% To do this right we need a feature of e-TeX, scantokens, % which we arrange to emulate with a temporary file in ordinary TeX. ifxeTeXversionundefined

\newwrite\macscribble
\def\scantokens#1{%
  \toks0={#1}%
  \immediate\openout\macscribble=\jobname.tmp
  \immediate\write\macscribble{\the\toks0}%
  \immediate\closeout\macscribble
  \input \jobname.tmp
}

fi

defscanmacro#1{%

\begingroup
  \newlinechar`\^^M
  \let\xeatspaces\eatspaces
  % Undo catcode changes of \startcontents and \doprintindex
  % When called from @insertcopying or (short)caption, we need active
  % backslash to get it printed correctly.  Previously, we had
  % \catcode`\\=\other instead.  We'll see whether a problem appears
  % with macro expansion.                             --kasal, 19aug04
  \catcode`\@=0 \catcode`\\=\active \escapechar=`\@
  % ... and \example
  \spaceisspace
  %
  % Append \endinput to make sure that TeX does not see the ending newline.
  %
  % I've verified that it is necessary both for e-TeX and for ordinary TeX
  %                                                   --kasal, 29nov03
  \scantokens{#1\endinput}%
\endgroup

}

defscanexp#1{%

\edef\temp{\noexpand\scanmacro{#1}}%
\temp

}

newcountparamno % Count of parameters newtoksmacname % Macro name newififrecursive % Is it recursive?

% List of all defined macros in the form % definedummywordmacro1definedummywordmacro2… % Currently is also contains all @aliases; the list can be split % if there is a need. defmacrolist{}

% Add the macro to macrolist defaddtomacrolist#1{expandafter addtomacrolistxxx csname#1endcsname} defaddtomacrolistxxx#1{%

\toks0 = \expandafter{\macrolist\definedummyword#1}%
\xdef\macrolist{\the\toks0}%

}

% Utility routines. % This does let #1 = #2, with csnames; that is, % let csname#1endcsname = csname#2endcsname % (except of course we have to play expansion games). % defcslet#1#2{%

\expandafter\let
\csname#1\expandafter\endcsname
\csname#2\endcsname

}

% Trim leading and trailing spaces off a string. % Concepts from aro-bend problem 15 (see CTAN). {catcode`@=11 gdefeatspaces #1{expandaftertrim@expandafter{#1 }} gdeftrim@ #1{trim@@ @#1 @ #1 @ @@} gdeftrim@@ #1@ #2@ #3@@{trim@@@empty #2 @} defunbrace#1{#1} unbrace{gdeftrim@@@ #1 } #2@{#1} }

% Trim a single trailing ^^M off a string. {catcode`^^M=other catcode`Q=3% gdefeatcr #1{eatcra #1Q^^MQ}% gdefeatcra#1^^MQ{eatcrb#1Q}% gdefeatcrb#1Q#2Q{#1}% }

% Macro bodies are absorbed as an argument in a context where % all characters are catcode 10, 11 or 12, except \ which is active % (as in normal texinfo). It is necessary to change the definition of .

% It's necessary to have hard CRs when the macro is executed. This is % done by making ^^M (endlinechar) catcode 12 when reading the macro % body, and then making it the newlinechar in scanmacro.

defscanctxt{%

\catcode`\"=\other
\catcode`\+=\other
\catcode`\<=\other
\catcode`\>=\other
\catcode`\@=\other
\catcode`\^=\other
\catcode`\_=\other
\catcode`\|=\other
\catcode`\~=\other

}

defscanargctxt{%

\scanctxt
\catcode`\\=\other
\catcode`\^^M=\other

}

defmacrobodyctxt{%

\scanctxt
\catcode`\{=\other
\catcode`\}=\other
\catcode`\^^M=\other
\usembodybackslash

}

defmacroargctxt{%

\scanctxt
\catcode`\\=\other

}

% mbodybackslash is the definition of \ in @macro bodies. % It maps foo\ => csname macarg.fooendcsname => #N % where N is the macro parameter number. % We define csname macarg.endcsname to be realbackslash, so % \ in macro replacement text gets you a backslash.

{catcode`@=0 @catcode`@=@active

@gdef@usembodybackslash{@let\=@mbodybackslash}
@gdef@mbodybackslash#1\{@csname macarg.#1@endcsname}

} expandafterdefcsname macarg.endcsname{realbackslash}

defmacro{recursivefalseparseargmacroxxx} defrmacro{recursivetrueparseargmacroxxx}

defmacroxxx#1{%

\getargs{#1}%           now \macname is the macname and \argl the arglist
\ifx\argl\empty       % no arguments
   \paramno=0%
\else
   \expandafter\parsemargdef \argl;%
\fi
\if1\csname ismacro.\the\macname\endcsname
   \message{Warning: redefining \the\macname}%
\else
   \expandafter\ifx\csname \the\macname\endcsname \relax
   \else \errmessage{Macro name \the\macname\space already defined}\fi
   \global\cslet{macsave.\the\macname}{\the\macname}%
   \global\expandafter\let\csname ismacro.\the\macname\endcsname=1%
   \addtomacrolist{\the\macname}%
\fi
\begingroup \macrobodyctxt
\ifrecursive \expandafter\parsermacbody
\else \expandafter\parsemacbody
\fi}

parseargdefunmacro{%

\if1\csname ismacro.#1\endcsname
  \global\cslet{#1}{macsave.#1}%
  \global\expandafter\let \csname ismacro.#1\endcsname=0%
  % Remove the macro name from \macrolist:
  \begingroup
    \expandafter\let\csname#1\endcsname \relax
    \let\definedummyword\unmacrodo
    \xdef\macrolist{\macrolist}%
  \endgroup
\else
  \errmessage{Macro #1 not defined}%
\fi

}

% Called by do from dounmacro on each macro. The idea is to omit any % macro definitions that have been changed to relax. % defunmacrodo#1{%

\ifx #1\relax
  % remove this
\else
  \noexpand\definedummyword \noexpand#1%
\fi

}

% This makes use of the obscure feature that if the last token of a % <parameter list> is #, then the preceding argument is delimited by % an opening brace, and that opening brace is not consumed. defgetargs#1{getargsxxx#1{}} defgetargsxxx#1#{getmacname #1 relaxgetmacargs} defgetmacname #1 #2relax{macname={#1}} defgetmacargs#1{defargl{#1}}

% Parse the optional {params} list. Set up paramno and paramlist % so defmacro knows what to do. Define macarg.blah for each blah % in the params list, to be ##N where N is the position in that list. % That gets used by mbodybackslash (above).

% We need to get `macro parameter char #' into several definitions. % The technique used is stolen from LaTeX: let hash be something % unexpandable, insert that wherever you need a #, and then redefine % it to # just before using the token list produced. % % The same technique is used to protect eatspaces till just before % the macro is used.

defparsemargdef#1;{paramno=0defparamlist{}%

\let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,}

defparsemargdefxxx#1,{%

\if#1;\let\next=\relax
\else \let\next=\parsemargdefxxx
  \advance\paramno by 1%
  \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname
      {\xeatspaces{\hash\the\paramno}}%
  \edef\paramlist{\paramlist\hash\the\paramno,}%
\fi\next}

% These two commands read recursive and nonrecursive macro bodies. % (They're different since rec and nonrec macros end differently.)

longdefparsemacbody#1@end macro% {xdeftemp{eatcr{#1}}endgroupdefmacro}% longdefparsermacbody#1@end rmacro% {xdeftemp{eatcr{#1}}endgroupdefmacro}%

% This defines the macro itself. There are six cases: recursive and % nonrecursive macros of zero, one, and many arguments. % Much magic with expandafter here. % xdef is used so that macro definitions will survive the file % they're defined in; @include reads the file inside a group. defdefmacro{%

\let\hash=##% convert placeholders to macro parameter chars
\ifrecursive
  \ifcase\paramno
  % 0
    \expandafter\xdef\csname\the\macname\endcsname{%
      \noexpand\scanmacro{\temp}}%
  \or % 1
    \expandafter\xdef\csname\the\macname\endcsname{%
       \bgroup\noexpand\macroargctxt
       \noexpand\braceorline
       \expandafter\noexpand\csname\the\macname xxx\endcsname}%
    \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
       \egroup\noexpand\scanmacro{\temp}}%
  \else % many
    \expandafter\xdef\csname\the\macname\endcsname{%
       \bgroup\noexpand\macroargctxt
       \noexpand\csname\the\macname xx\endcsname}%
    \expandafter\xdef\csname\the\macname xx\endcsname##1{%
        \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
    \expandafter\expandafter
    \expandafter\xdef
    \expandafter\expandafter
      \csname\the\macname xxx\endcsname
        \paramlist{\egroup\noexpand\scanmacro{\temp}}%
  \fi
\else
  \ifcase\paramno
  % 0
    \expandafter\xdef\csname\the\macname\endcsname{%
      \noexpand\norecurse{\the\macname}%
      \noexpand\scanmacro{\temp}\egroup}%
  \or % 1
    \expandafter\xdef\csname\the\macname\endcsname{%
       \bgroup\noexpand\macroargctxt
       \noexpand\braceorline
       \expandafter\noexpand\csname\the\macname xxx\endcsname}%
    \expandafter\xdef\csname\the\macname xxx\endcsname##1{%
      \egroup
      \noexpand\norecurse{\the\macname}%
      \noexpand\scanmacro{\temp}\egroup}%
  \else % many
    \expandafter\xdef\csname\the\macname\endcsname{%
       \bgroup\noexpand\macroargctxt
       \expandafter\noexpand\csname\the\macname xx\endcsname}%
    \expandafter\xdef\csname\the\macname xx\endcsname##1{%
        \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}%
    \expandafter\expandafter
    \expandafter\xdef
    \expandafter\expandafter
    \csname\the\macname xxx\endcsname
    \paramlist{%
        \egroup
        \noexpand\norecurse{\the\macname}%
        \noexpand\scanmacro{\temp}\egroup}%
  \fi
\fi}

defnorecurse#1{bgroupcslet{#1}{macsave.#1}}

% braceorline decides whether the next nonwhitespace character is a % {. If so it reads up to the closing }, if not, it reads the whole % line. Whatever was read is then fed to the next control sequence % as an argument (by parsebrace or parsearg) defbraceorline#1{letnext=#1futureletncharbraceorlinexxx} defbraceorlinexxx{%

\ifx\nchar\bgroup\else
  \expandafter\parsearg
\fi \next}

% @alias. % We need some trickery to remove the optional spaces around the equal % sign. Just make them active and then expand them all to nothing. defalias{parseargusingobeyspacesaliasxxx} defaliasxxx #1{aliasyyy#1relax} defaliasyyy #1=#2relax{%

{%
  \expandafter\let\obeyedspace=\empty
  \addtomacrolist{#1}%
  \xdef\next{\global\let\makecsname{#1}=\makecsname{#2}}%
}%
\next

}

message{cross references,}

newwriteauxfile

newififhavexrefs % True if xref values are known. newififwarnedxrefs % True if we warned once that they aren't known.

% @inforef is relatively simple. definforef #1{inforefzzz #1,,,,**} definforefzzz #1,#2,#3,#4**{putwordSee{} putwordInfo{} putwordfile{} file{ignorespaces #3{}},

node \samp{\ignorespaces#1{}}}

% @node's only job in TeX is to define lastnode, which is used in % cross-references. The @node line might or might not have commas, and % might or might not have spaces before the first comma, like: % @node foo , bar , … % We don't want such trailing spaces in the node name. % parseargdefnode{checkenv{}donode #1 ,finishnodeparse} % % also remove a trailing comma, in case of something like this: % @node Help-Cross, , , Cross-refs defdonode#1 ,#2finishnodeparse{dodonode #1,finishnodeparse} defdodonode#1,#2finishnodeparse{gdeflastnode{#1}}

letnwnode=node letlastnode=empty

% Write a cross-reference definition for the current node. #1 is the % type (Ynumbered, Yappendix, Ynothing). % defdonoderef#1{%

\ifx\lastnode\empty\else
  \setref{\lastnode}{#1}%
  \global\let\lastnode=\empty
\fi

}

% @anchor{NAME} – define xref target at arbitrary point. % newcountsavesfregister % defsavesf{relax ifhmode savesfregister=spacefactor fi} defrestoresf{relax ifhmode spacefactor=savesfregister fi} defanchor#1{savesf setref{#1}{Ynothing}restoresf ignorespaces}

% setref{NAME}{SNT} defines a cross-reference point NAME (a node or an % anchor), which consists of three parts: % 1) NAME-title - the current sectioning name taken from thissection, % or the anchor name. % 2) NAME-snt - section number and type, passed as the SNT arg, or % empty for anchors. % 3) NAME-pg - the page number. % % This is called from donoderef, anchor, and dofloat. In the case of % floats, there is an additional part, which is not written here: % 4) NAME-lof - the text as it should appear in a @listoffloats. % defsetref#1#2{%

\pdfmkdest{#1}%
\iflinks
  {%
    \atdummies  % preserve commands, but don't expand them
    \edef\writexrdef##1##2{%
      \write\auxfile{@xrdef{#1-% #1 of \setref, expanded by the \edef
        ##1}{##2}}% these are parameters of \writexrdef
    }%
    \toks0 = \expandafter{\thissection}%
    \immediate \writexrdef{title}{\the\toks0 }%
    \immediate \writexrdef{snt}{\csname #2\endcsname}% \Ynumbered etc.
    \writexrdef{pg}{\folio}% will be written later, during \shipout
  }%
\fi

}

% @xref, @pxref, and @ref generate cross-references. For xrefX, #1 is % the node name, #2 the name of the Info cross-reference, #3 the printed % node name, #4 the name of the Info file, #5 the name of the printed % manual. All but the node name can be omitted. % defpxref#1{putwordsee{} xrefX[#1,,,,,,,]} defxref#1{putwordSee{} xrefX[#1,,,,,,,]} defref#1{xrefX} defxrefX[#1,#2,#3,#4,#5,#6]{begingroup

\unsepspaces
\def\printedmanual{\ignorespaces #5}%
\def\printedrefname{\ignorespaces #3}%
\setbox1=\hbox{\printedmanual\unskip}%
\setbox0=\hbox{\printedrefname\unskip}%
\ifdim \wd0 = 0pt
  % No printed node name was explicitly given.
  \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
    % Use the node name inside the square brackets.
    \def\printedrefname{\ignorespaces #1}%
  \else
    % Use the actual chapter/section title appear inside
    % the square brackets.  Use the real section title if we have it.
    \ifdim \wd1 > 0pt
      % It is in another manual, so we don't have it.
      \def\printedrefname{\ignorespaces #1}%
    \else
      \ifhavexrefs
        % We know the real title if we have the xref values.
        \def\printedrefname{\refx{#1-title}{}}%
      \else
        % Otherwise just copy the Info node name.
        \def\printedrefname{\ignorespaces #1}%
      \fi%
    \fi
  \fi
\fi
%
% Make link in pdf output.
\ifpdf
  \leavevmode
  \getfilename{#4}%
  {\turnoffactive
   % See comments at \activebackslashdouble.
   {\activebackslashdouble \xdef\pdfxrefdest{#1}%
    \backslashparens\pdfxrefdest}%
   %
   \ifnum\filenamelength>0
     \startlink attr{/Border [0 0 0]}%
       goto file{\the\filename.pdf} name{\pdfxrefdest}%
   \else
     \startlink attr{/Border [0 0 0]}%
       goto name{\pdfmkpgn{\pdfxrefdest}}%
   \fi
  }%
  \linkcolor
\fi
%
% Float references are printed completely differently: "Figure 1.2"
% instead of "[somenode], p.3".  We distinguish them by the
% LABEL-title being set to a magic string.
{%
  % Have to otherify everything special to allow the \csname to
  % include an _ in the xref name, etc.
  \indexnofonts
  \turnoffactive
  \expandafter\global\expandafter\let\expandafter\Xthisreftitle
    \csname XR#1-title\endcsname
}%
\iffloat\Xthisreftitle
  % If the user specified the print name (third arg) to the ref,
  % print it instead of our usual "Figure 1.2".
  \ifdim\wd0 = 0pt
    \refx{#1-snt}%
  \else
    \printedrefname
  \fi
  %
  % if the user also gave the printed manual name (fifth arg), append
  % "in MANUALNAME".
  \ifdim \wd1 > 0pt
    \space \putwordin{} \cite{\printedmanual}%
  \fi
\else
  % node/anchor (non-float) references.
  %
  % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
  % insert empty discretionaries after hyphens, which means that it will
  % not find a line break at a hyphen in a node names.  Since some manuals
  % are best written with fairly long node names, containing hyphens, this
  % is a loss.  Therefore, we give the text of the node name again, so it
  % is as if TeX is seeing it for the first time.
  \ifdim \wd1 > 0pt
    \putwordsection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}%
  \else
    % _ (for example) has to be the character _ for the purposes of the
    % control sequence corresponding to the node, but it has to expand
    % into the usual \leavevmode...\vrule stuff for purposes of
    % printing. So we \turnoffactive for the \refx-snt, back on for the
    % printing, back off for the \refx-pg.
    {\turnoffactive
     % Only output a following space if the -snt ref is nonempty; for
     % @unnumbered and @anchor, it won't be.
     \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
     \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
    }%
    % output the `[mynode]' via a macro so it can be overridden.
    \xrefprintnodename\printedrefname
    %
    % But we always want a comma and a space:
    ,\space
    %
    % output the `page 3'.
    \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
  \fi
\fi
\endlink

endgroup}

% This macro is called from xrefX for the `[nodename]' part of xref % output. It's a separate macro only so it can be changed more easily, % since square brackets don't work well in some documents. Particularly % one that Bob is working on :). % defxrefprintnodename#1{[#1]}

% Things referred to by setref. % defYnothing{} defYomitfromtoc{} defYnumbered{%

\ifnum\secno=0
  \putwordChapter@tie \the\chapno
\else \ifnum\subsecno=0
  \putwordSection@tie \the\chapno.\the\secno
\else \ifnum\subsubsecno=0
  \putwordSection@tie \the\chapno.\the\secno.\the\subsecno
\else
  \putwordSection@tie \the\chapno.\the\secno.\the\subsecno.\the\subsubsecno
\fi\fi\fi

} defYappendix{%

\ifnum\secno=0
   \putwordAppendix@tie @char\the\appendixno{}%
\else \ifnum\subsecno=0
   \putwordSection@tie @char\the\appendixno.\the\secno
\else \ifnum\subsubsecno=0
  \putwordSection@tie @char\the\appendixno.\the\secno.\the\subsecno
\else
  \putwordSection@tie
    @char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno
\fi\fi\fi

}

% Define refx{NAME}{SUFFIX} to reference a cross-reference string named NAME. % If its value is nonempty, SUFFIX is output afterward. % defrefx#1#2{%

{%
  \indexnofonts
  \otherbackslash
  \expandafter\global\expandafter\let\expandafter\thisrefX
    \csname XR#1\endcsname
}%
\ifx\thisrefX\relax
  % If not defined, say something at least.
  \angleleft un\-de\-fined\angleright
  \iflinks
    \ifhavexrefs
      \message{\linenumber Undefined cross reference `#1'.}%
    \else
      \ifwarnedxrefs\else
        \global\warnedxrefstrue
        \message{Cross reference values unknown; you must run TeX again.}%
      \fi
    \fi
  \fi
\else
  % It's defined, so just use it.
  \thisrefX
\fi
#2% Output the suffix in any case.

}

% This is the macro invoked by entries in the aux file. Usually it's % just a def (we prepend XR to the control sequence name to avoid % collisions). But if this is a float type, we have more work to do. % defxrdef#1#2{%

\expandafter\gdef\csname XR#1\endcsname{#2}% remember this xref value.
%
% Was that xref control sequence that we just defined for a float?
\expandafter\iffloat\csname XR#1\endcsname
  % it was a float, and we have the (safe) float type in \iffloattype.
  \expandafter\let\expandafter\floatlist
    \csname floatlist\iffloattype\endcsname
  %
  % Is this the first time we've seen this float type?
  \expandafter\ifx\floatlist\relax
    \toks0 = {\do}% yes, so just \do
  \else
    % had it before, so preserve previous elements in list.
    \toks0 = \expandafter{\floatlist\do}%
  \fi
  %
  % Remember this xref in the control sequence \floatlistFLOATTYPE,
  % for later use in \listoffloats.
  \expandafter\xdef\csname floatlist\iffloattype\endcsname{\the\toks0{#1}}%
\fi

}

% Read the last existing aux file, if any. No error if none exists. % deftryauxfile{%

\openin 1 \jobname.aux
\ifeof 1 \else
  \readdatafile{aux}%
  \global\havexrefstrue
\fi
\closein 1

}

defsetupdatafile{%

\catcode`\^^@=\other
\catcode`\^^A=\other
\catcode`\^^B=\other
\catcode`\^^C=\other
\catcode`\^^D=\other
\catcode`\^^E=\other
\catcode`\^^F=\other
\catcode`\^^G=\other
\catcode`\^^H=\other
\catcode`\^^K=\other
\catcode`\^^L=\other
\catcode`\^^N=\other
\catcode`\^^P=\other
\catcode`\^^Q=\other
\catcode`\^^R=\other
\catcode`\^^S=\other
\catcode`\^^T=\other
\catcode`\^^U=\other
\catcode`\^^V=\other
\catcode`\^^W=\other
\catcode`\^^X=\other
\catcode`\^^Z=\other
\catcode`\^^[=\other
\catcode`\^^\=\other
\catcode`\^^]=\other
\catcode`\^^^=\other
\catcode`\^^_=\other
% It was suggested to set the catcode of ^ to 7, which would allow ^^e4 etc.
% in xref tags, i.e., node names.  But since ^^e4 notation isn't
% supported in the main text, it doesn't seem desirable.  Furthermore,
% that is not enough: for node names that actually contain a ^
% character, we would end up writing a line like this: 'xrdef {'hat
% b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first
% argument, and \hat is not an expandable control sequence.  It could
% all be worked out, but why?  Either we support ^^ or we don't.
%
% The other change necessary for this was to define \auxhat:
% \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter
% and then to call \auxhat in \setq.
%
\catcode`\^=\other
%
% Special characters.  Should be turned off anyway, but...
\catcode`\~=\other
\catcode`\[=\other
\catcode`\]=\other
\catcode`\"=\other
\catcode`\_=\other
\catcode`\|=\other
\catcode`\<=\other
\catcode`\>=\other
\catcode`\$=\other
\catcode`\#=\other
\catcode`\&=\other
\catcode`\%=\other
\catcode`+=\other % avoid \+ for paranoia even though we've turned it off
%
% This is to support \ in node names and titles, since the \
% characters end up in a \csname.  It's easier than
% leaving it active and making its active definition an actual \
% character.  What I don't understand is why it works in the *value*
% of the xrdef.  Seems like it should be a catcode12 \, and that
% should not typeset properly.  But it works, so I'm moving on for
% now.  --karl, 15jan04.
\catcode`\\=\other
%
% Make the characters 128-255 be printing characters.
{%
  \count1=128
  \def\loop{%
    \catcode\count1=\other
    \advance\count1 by 1
    \ifnum \count1<256 \loop \fi
  }%
}%
%
% @ is our escape character in .aux files, and we need braces.
\catcode`\{=1
\catcode`\}=2
\catcode`\@=0

}

defreaddatafile#1{% begingroup

\setupdatafile
\input\jobname.#1

endgroup}

message{insertions,} % including footnotes.

newcount footnoteno

% The trailing space in the following definition for supereject is % vital for proper filling; pages come out unaligned when you do a % pagealignmacro call if that space before the closing brace is % removed. (Generally, numeric constants should always be followed by a % space to prevent strange expansion errors.) defsupereject{parpenalty -20000footnoteno =0 }

% @footnotestyle is meaningful for info output only. letfootnotestyle=comment

{catcode `@=11 % % Auto-number footnotes. Otherwise like plain. gdeffootnote{%

\let\indent=\ptexindent
\let\noindent=\ptexnoindent
\global\advance\footnoteno by \@ne
\edef\thisfootno{$^{\the\footnoteno}$}%
%
% In case the footnote comes at the end of a sentence, preserve the
% extra spacing after we do the footnote number.
\let\@sf\empty
\ifhmode\edef\@sf{\spacefactor\the\spacefactor}\ptexslash\fi
%
% Remove inadvertent blank space before typesetting the footnote number.
\unskip
\thisfootno\@sf
\dofootnote

}%

% Don't bother with the trickery in plain.tex to not require the % footnote text as a parameter. Our footnotes don't need to be so general. % % Oh yes, they do; otherwise, @ifset (and anything else that uses % parseargline) fails inside footnotes because the tokens are fixed when % the footnote is read. –karl, 16nov96. % gdefdofootnote{%

\insert\footins\bgroup
% We want to typeset this text as a normal paragraph, even if the
% footnote reference occurs in (for example) a display environment.
% So reset some parameters.
\hsize=\pagewidth
\interlinepenalty\interfootnotelinepenalty
\splittopskip\ht\strutbox % top baseline for broken footnotes
\splitmaxdepth\dp\strutbox
\floatingpenalty\@MM
\leftskip\z@skip
\rightskip\z@skip
\spaceskip\z@skip
\xspaceskip\z@skip
\parindent\defaultparindent
%
\smallfonts \rm
%
% Because we use hanging indentation in footnotes, a @noindent appears
% to exdent this text, so make it be a no-op.  makeinfo does not use
% hanging indentation so @noindent can still be needed within footnote
% text after an @example or the like (not that this is good style).
\let\noindent = \relax
%
% Hang the footnote text off the number.  Use \everypar in case the
% footnote extends for more than one paragraph.
\everypar = {\hang}%
\textindent{\thisfootno}%
%
% Don't crash into the line above the footnote text.  Since this
% expands into a box, it must come within the paragraph, lest it
% provide a place where TeX can split the footnote.
\footstrut
\futurelet\next\fo@t

} }%end catcode `@=11

% In case a @footnote appears in a vbox, save the footnote text and create % the real insert just after the vbox finished. Otherwise, the insertion % would be lost. % Similarily, if a @footnote appears inside an alignment, save the footnote % text to a box and make the insert when a row of the table is finished. % And the same can be done for other insert classes. –kasal, 16nov03.

% Replace the insert primitive by a cheating macro. % Deeper inside, just make sure that the saved insertions are not spilled % out prematurely. % defstartsavinginserts{%

\ifx \insert\ptexinsert
  \let\insert\saveinsert
\else
  \let\checkinserts\relax
\fi

}

% This insert replacement works for both insertfootins{foo} and % insertfootinsbgroup fooegroup, but it doesn't work for insert27{foo}. % defsaveinsert#1{%

\edef\next{\noexpand\savetobox \makeSAVEname#1}%
\afterassignment\next
% swallow the left brace
\let\temp =

} defmakeSAVEname#1{makecsname{SAVEexpandaftergobblestring#1}} defsavetobox#1{globalsetbox#1 = vboxbgroup unvbox#1}

defchecksaveins#1{ifvoid#1else placesaveins#1fi}

defplacesaveins#1{%

\ptexinsert \csname\expandafter\gobblesave\string#1\endcsname
  {\box#1}%

}

% eat @SAVE – beware, all of them have catcode other: {

\def\dospecials{\do S\do A\do V\do E} \uncatcodespecials  %  ;-)
\gdef\gobblesave @SAVE{}

}

% initialization: defnewsaveins #1{%

\edef\next{\noexpand\newsaveinsX \makeSAVEname#1}%
\next

} defnewsaveinsX #1{%

\csname newbox\endcsname #1%
\expandafter\def\expandafter\checkinserts\expandafter{\checkinserts
  \checksaveins #1}%

}

% initialize: letcheckinsertsempty newsaveinsfootins newsaveinsmargin

% @image. We use the macros from epsf.tex to support this. % If epsf.tex is not installed and @image is used, we complain. % % Check for and read epsf.tex up front. If we read it only at @image % time, we might be inside a group, and then its definitions would get % undone and the next image would fail. openin 1 = epsf.tex ifeof 1 else

% Do not bother showing banner with epsf.tex v2.7k (available in
% doc/epsf.tex and on ctan).
\def\epsfannounce{\toks0 = }%
\input epsf.tex

fi closein 1 % % We will only complain once about lack of epsf.tex. newififwarnednoepsf newhelpnoepsfhelp{epsf.tex must be installed for images to

work.  It is also included in the Texinfo distribution, or you can get
it from ftp://tug.org/tex/epsf.tex.}

% defimage#1{%

\ifx\epsfbox\undefined
  \ifwarnednoepsf \else
    \errhelp = \noepsfhelp
    \errmessage{epsf.tex not found, images will be ignored}%
    \global\warnednoepsftrue
  \fi
\else
  \imagexxx #1,,,,,\finish
\fi

} % % Arguments to @image: % #1 is (mandatory) image filename; we tack on .eps extension. % #2 is (optional) width, #3 is (optional) height. % #4 is (ignored optional) html alt text. % #5 is (ignored optional) extension. % #6 is just the usual extra ignored arg for parsing this stuff. newififimagevmode defimagexxx#1,#2,#3,#4,#5,#6finish{begingroup

\catcode`\^^M = 5     % in case we're inside an example
\normalturnoffactive  % allow _ et al. in names
% If the image is by itself, center it.
\ifvmode
  \imagevmodetrue
  \nobreak\bigskip
  % Usually we'll have text after the image which will insert
  % \parskip glue, so insert it here too to equalize the space
  % above and below.
  \nobreak\vskip\parskip
  \nobreak
  \line\bgroup\hss
\fi
%
% Output the image.
\ifpdf
  \dopdfimage{#1}{#2}{#3}%
\else
  % \epsfbox itself resets \epsf?size at each figure.
  \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi
  \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi
  \epsfbox{#1.eps}%
\fi
%
\ifimagevmode \hss \egroup \bigbreak \fi  % space after the image

endgroup}

% @float FLOATTYPE,LABEL,LOC … @end float for displayed figures, tables, % etc. We don't actually implement floating yet, we always include the % float “here”. But it seemed the best name for the future. % envparseargdeffloat{eatcommaspaceeatcommaspacedofloat#1, , ,finish}

% There may be a space before second and/or third parameter; delete it. defeatcommaspace#1, {#1,}

% #1 is the optional FLOATTYPE, the text label for this float, typically % “Figure”, “Table”, “Example”, etc. Can't contain commas. If omitted, % this float will not be numbered and cannot be referred to. % % #2 is the optional xref label. Also must be present for the float to % be referable. % % #3 is the optional positioning argument; for now, it is ignored. It % will somehow specify the positions allowed to float to (here, top, bottom). % % We keep a separate counter for each FLOATTYPE, which we reset at each % chapter-level command. letresetallfloatnos=empty % defdofloat#1,#2,#3,#4finish{%

\let\thiscaption=\empty
\let\thisshortcaption=\empty
%
% don't lose footnotes inside @float.
%
% BEWARE: when the floats start float, we have to issue warning whenever an
% insert appears inside a float which could possibly float. --kasal, 26may04
%
\startsavinginserts
%
% We can't be used inside a paragraph.
\par
%
\vtop\bgroup
  \def\floattype{#1}%
  \def\floatlabel{#2}%
  \def\floatloc{#3}% we do nothing with this yet.
  %
  \ifx\floattype\empty
    \let\safefloattype=\empty
  \else
    {%
      % the floattype might have accents or other special characters,
      % but we need to use it in a control sequence name.
      \indexnofonts
      \turnoffactive
      \xdef\safefloattype{\floattype}%
    }%
  \fi
  %
  % If label is given but no type, we handle that as the empty type.
  \ifx\floatlabel\empty \else
    % We want each FLOATTYPE to be numbered separately (Figure 1,
    % Table 1, Figure 2, ...).  (And if no label, no number.)
    %
    \expandafter\getfloatno\csname\safefloattype floatno\endcsname
    \global\advance\floatno by 1
    %
    {%
      % This magic value for \thissection is output by \setref as the
      % XREFLABEL-title value.  \xrefX uses it to distinguish float
      % labels (which have a completely different output format) from
      % node and anchor labels.  And \xrdef uses it to construct the
      % lists of floats.
      %
      \edef\thissection{\floatmagic=\safefloattype}%
      \setref{\floatlabel}{Yfloat}%
    }%
  \fi
  %
  % start with \parskip glue, I guess.
  \vskip\parskip
  %
  % Don't suppress indentation if a float happens to start a section.
  \restorefirstparagraphindent

}

% we have these possibilities: % @float Foo,lbl & @caption{Cap}: Foo 1.1: Cap % @float Foo,lbl & no caption: Foo 1.1 % @float Foo & @caption{Cap}: Foo: Cap % @float Foo & no caption: Foo % @float ,lbl & Caption{Cap}: 1.1: Cap % @float ,lbl & no caption: 1.1 % @float & @caption{Cap}: Cap % @float & no caption: % defEfloat{%

  \let\floatident = \empty
  %
  % In all cases, if we have a float type, it comes first.
  \ifx\floattype\empty \else \def\floatident{\floattype}\fi
  %
  % If we have an xref label, the number comes next.
  \ifx\floatlabel\empty \else
    \ifx\floattype\empty \else % if also had float type, need tie first.
      \appendtomacro\floatident{\tie}%
    \fi
    % the number.
    \appendtomacro\floatident{\chaplevelprefix\the\floatno}%
  \fi
  %
  % Start the printed caption with what we've constructed in
  % \floatident, but keep it separate; we need \floatident again.
  \let\captionline = \floatident
  %
  \ifx\thiscaption\empty \else
    \ifx\floatident\empty \else
      \appendtomacro\captionline{: }% had ident, so need a colon between
    \fi
    %
    % caption text.
    \appendtomacro\captionline{\scanexp\thiscaption}%
  \fi
  %
  % If we have anything to print, print it, with space before.
  % Eventually this needs to become an \insert.
  \ifx\captionline\empty \else
    \vskip.5\parskip
    \captionline
    %
    % Space below caption.
    \vskip\parskip
  \fi
  %
  % If have an xref label, write the list of floats info.  Do this
  % after the caption, to avoid chance of it being a breakpoint.
  \ifx\floatlabel\empty \else
    % Write the text that goes in the lof to the aux file as
    % \floatlabel-lof.  Besides \floatident, we include the short
    % caption if specified, else the full caption if specified, else nothing.
    {%
      \atdummies
      % since we read the caption text in the macro world, where ^^M
      % is turned into a normal character, we have to scan it back, so
      % we don't write the literal three characters "^^M" into the aux file.
      \scanexp{%
        \xdef\noexpand\gtemp{%
          \ifx\thisshortcaption\empty
            \thiscaption
          \else
            \thisshortcaption
          \fi
        }%
      }%
      \immediate\write\auxfile{@xrdef{\floatlabel-lof}{\floatident
        \ifx\gtemp\empty \else : \gtemp \fi}}%
    }%
  \fi
\egroup  % end of \vtop
%
% place the captured inserts
%
% BEWARE: when the floats start float, we have to issue warning whenever an
% insert appears inside a float which could possibly float. --kasal, 26may04
%
\checkinserts

}

% Append the tokens #2 to the definition of macro #1, not expanding either. % defappendtomacro#1#2{%

\expandafter\def\expandafter#1\expandafter{#1#2}%

}

% @caption, @shortcaption % defcaption{docaptionthiscaption} defshortcaption{docaptionthisshortcaption} defdocaption{checkenvfloat bgroupscanargctxtdefcaption} defdefcaption#1#2{egroup def#1{#2}}

% The parameter is the control sequence identifying the counter we are % going to use. Create it if it doesn't exist and assign it to floatno. defgetfloatno#1{%

\ifx#1\relax
    % Haven't seen this figure type before.
    \csname newcount\endcsname #1%
    %
    % Remember to reset this floatno at the next chap.
    \expandafter\gdef\expandafter\resetallfloatnos
      \expandafter{\resetallfloatnos #1=0 }%
\fi
\let\floatno#1%

}

% setref calls this to get the XREFLABEL-snt value. We want an @xref % to the FLOATLABEL to expand to “Figure 3.1”. We call setref when we % first read the @float command. % defYfloat{floattype@tie chaplevelprefixthefloatno}%

% Magic string used for the XREFLABEL-title value, so xrefX can % distinguish floats from other xref types. deffloatmagic{!!float!!}

% #1 is the control sequence we are passed; we expand into a conditional % which is true if #1 represents a float ref. That is, the magic % thissection value which we setref above. % defiffloat#1{expandafterdoiffloat#1==finish} % % #1 is (maybe) the floatmagic string. If so, #2 will be the % (safe) float type for this float. We set iffloattype to #2. % defdoiffloat#1=#2=#3finish{%

\def\temp{#1}%
\def\iffloattype{#2}%
\ifx\temp\floatmagic

}

% @listoffloats FLOATTYPE - print a list of floats like a table of contents. % parseargdeflistoffloats{%

\def\floattype{#1}% floattype
{%
  % the floattype might have accents or other special characters,
  % but we need to use it in a control sequence name.
  \indexnofonts
  \turnoffactive
  \xdef\safefloattype{\floattype}%
}%
%
% \xrdef saves the floats as a \do-list in \floatlistSAFEFLOATTYPE.
\expandafter\ifx\csname floatlist\safefloattype\endcsname \relax
  \ifhavexrefs
    % if the user said @listoffloats foo but never @float foo.
    \message{\linenumber No `\safefloattype' floats to list.}%
  \fi
\else
  \begingroup
    \leftskip=\tocindent  % indent these entries like a toc
    \let\do=\listoffloatsdo
    \csname floatlist\safefloattype\endcsname
  \endgroup
\fi

}

% This is called on each entry in a list of floats. We're passed the % xref label, in the form LABEL-title, which is how we save it in the % aux file. We strip off the -title and look up XRLABEL-lof, which % has the text we're supposed to typeset here. % % Figures without xref labels will not be included in the list (since % they won't appear in the aux file). % deflistoffloatsdo#1{listoffloatsdoentry#1finish} deflistoffloatsdoentry#1-titlefinish{{%

% Can't fully expand XR#1-lof because it can contain anything.  Just
% pass the control sequence.  On the other hand, XR#1-pg is just the
% page number, and we want to fully expand that so we can get a link
% in pdf output.
\toksA = \expandafter{\csname XR#1-lof\endcsname}%
%
% use the same \entry macro we use to generate the TOC and index.
\edef\writeentry{\noexpand\entry{\the\toksA}{\csname XR#1-pg\endcsname}}%
\writeentry

}}

message{localization,} % and i18n.

% @documentlanguage is usually given very early, just after % @setfilename. If done too late, it may not override everything % properly. Single argument is the language abbreviation. % It would be nice if we could set up a hyphenation file here. % parseargdefdocumentlanguage{%

\tex % read txi-??.tex file in plain TeX.
  % Read the file if it exists.
  \openin 1 txi-#1.tex
  \ifeof 1
    \errhelp = \nolanghelp
    \errmessage{Cannot read language file txi-#1.tex}%
  \else
    \input txi-#1.tex
  \fi
  \closein 1
\endgroup

} newhelpnolanghelp{The given language definition file cannot be found or is empty. Maybe you need to install it? In the current directory should work if nowhere else does.}

% @documentencoding should change something in TeX eventually, most % likely, but for now just recognize it. letdocumentencoding = comment

% Page size parameters. % newdimendefaultparindent defaultparindent = 15pt

chapheadingskip = 15pt plus 4pt minus 2pt secheadingskip = 12pt plus 3pt minus 2pt subsecheadingskip = 9pt plus 2pt minus 2pt

% Prevent underfull vbox error messages. vbadness = 10000

% Don't be so finicky about underfull hboxes, either. hbadness = 2000

% Following George Bush, just get rid of widows and orphans. widowpenalty=10000 clubpenalty=10000

% Use TeX 3.0's emergencystretch to help line breaking, but if we're % using an old version of TeX, don't do anything. We want the amount of % stretch added to depend on the line length, hence the dependence on % hsize. We call this whenever the paper size is set. % defsetemergencystretch{%

\ifx\emergencystretch\thisisundefined
  % Allow us to assign to \emergencystretch anyway.
  \def\emergencystretch{\dimen0}%
\else
  \emergencystretch = .15\hsize
\fi

}

% Parameters in order: 1) textheight; 2) textwidth; % 3) voffset; 4) hoffset; 5) binding offset; 6) topskip; % 7) physical page height; 8) physical page width. % % We also call setleading{textleading}, so the caller should define % textleading. The caller should also set parskip. % definternalpagesizes#1#2#3#4#5#6#7#8{%

\voffset = #3\relax
\topskip = #6\relax
\splittopskip = \topskip
%
\vsize = #1\relax
\advance\vsize by \topskip
\outervsize = \vsize
\advance\outervsize by 2\topandbottommargin
\pageheight = \vsize
%
\hsize = #2\relax
\outerhsize = \hsize
\advance\outerhsize by 0.5in
\pagewidth = \hsize
%
\normaloffset = #4\relax
\bindingoffset = #5\relax
%
\ifpdf
  \pdfpageheight #7\relax
  \pdfpagewidth #8\relax
\fi
%
\setleading{\textleading}
%
\parindent = \defaultparindent
\setemergencystretch

}

% @letterpaper (the default). defletterpaper{{globaldefs = 1

\parskip = 3pt plus 2pt minus 1pt
\textleading = 13.2pt
%
% If page is nothing but text, make it come out even.
\internalpagesizes{46\baselineskip}{6in}%
                  {\voffset}{.25in}%
                  {\bindingoffset}{36pt}%
                  {11in}{8.5in}%

}}

% Use @smallbook to reset parameters for 7x9.25 trim size. defsmallbook{{globaldefs = 1

\parskip = 2pt plus 1pt
\textleading = 12pt
%
\internalpagesizes{7.5in}{5in}%
                  {\voffset}{.25in}%
                  {\bindingoffset}{16pt}%
                  {9.25in}{7in}%
%
\lispnarrowing = 0.3in
\tolerance = 700
\hfuzz = 1pt
\contentsrightmargin = 0pt
\defbodyindent = .5cm

}}

% Use @smallerbook to reset parameters for 6x9 trim size. % (Just testing, parameters still in flux.) defsmallerbook{{globaldefs = 1

\parskip = 1.5pt plus 1pt
\textleading = 12pt
%
\internalpagesizes{7.4in}{4.8in}%
                  {-.2in}{-.4in}%
                  {0pt}{14pt}%
                  {9in}{6in}%
%
\lispnarrowing = 0.25in
\tolerance = 700
\hfuzz = 1pt
\contentsrightmargin = 0pt
\defbodyindent = .4cm

}}

% Use @afourpaper to print on European A4 paper. defafourpaper{{globaldefs = 1

\parskip = 3pt plus 2pt minus 1pt
\textleading = 13.2pt
%
% Double-side printing via postscript on Laserjet 4050
% prints double-sided nicely when \bindingoffset=10mm and \hoffset=-6mm.
% To change the settings for a different printer or situation, adjust
% \normaloffset until the front-side and back-side texts align.  Then
% do the same for \bindingoffset.  You can set these for testing in
% your texinfo source file like this:
% @tex
% \global\normaloffset = -6mm
% \global\bindingoffset = 10mm
% @end tex
\internalpagesizes{51\baselineskip}{160mm}
                  {\voffset}{\hoffset}%
                  {\bindingoffset}{44pt}%
                  {297mm}{210mm}%
%
\tolerance = 700
\hfuzz = 1pt
\contentsrightmargin = 0pt
\defbodyindent = 5mm

}}

% Use @afivepaper to print on European A5 paper. % From romildo@urano.iceb.ufop.br, 2 July 2000. % He also recommends making @example and @lisp be small. defafivepaper{{globaldefs = 1

\parskip = 2pt plus 1pt minus 0.1pt
\textleading = 12.5pt
%
\internalpagesizes{160mm}{120mm}%
                  {\voffset}{\hoffset}%
                  {\bindingoffset}{8pt}%
                  {210mm}{148mm}%
%
\lispnarrowing = 0.2in
\tolerance = 800
\hfuzz = 1.2pt
\contentsrightmargin = 0pt
\defbodyindent = 2mm
\tableindent = 12mm

}}

% A specific text layout, 24x15cm overall, intended for A4 paper. defafourlatex{{globaldefs = 1

\afourpaper
\internalpagesizes{237mm}{150mm}%
                  {\voffset}{4.6mm}%
                  {\bindingoffset}{7mm}%
                  {297mm}{210mm}%
%
% Must explicitly reset to 0 because we call \afourpaper.
\globaldefs = 0

}}

% Use @afourwide to print on A4 paper in landscape format. defafourwide{{globaldefs = 1

\afourpaper
\internalpagesizes{241mm}{165mm}%
                  {\voffset}{-2.95mm}%
                  {\bindingoffset}{7mm}%
                  {297mm}{210mm}%
\globaldefs = 0

}}

% @pagesizes TEXTHEIGHT % Perhaps we should allow setting the margins, topskip, parskip, % and/or leading, also. Or perhaps we should compute them somehow. % parseargdefpagesizes{pagesizesyyy #1,,finish} defpagesizesyyy#1,#2,#3finish{{%

\setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi
\globaldefs = 1
%
\parskip = 3pt plus 2pt minus 1pt
\setleading{\textleading}%
%
\dimen0 = #1
\advance\dimen0 by \voffset
%
\dimen2 = \hsize
\advance\dimen2 by \normaloffset
%
\internalpagesizes{#1}{\hsize}%
                  {\voffset}{\normaloffset}%
                  {\bindingoffset}{44pt}%
                  {\dimen0}{\dimen2}%

}}

% Set default to letter. % letterpaper

message{and turning on texinfo input format.}

% Define macros to output various characters with catcode for normal text. catcode`"=other catcode`~=other catcode`^=other catcode`_=other catcode`|=other catcode`<=other catcode`>=other catcode`+=other catcode`$=other defnormaldoublequote{“} defnormaltilde{~} defnormalcaret{^} defnormalunderscore{_} defnormalverticalbar{|} defnormalless{<} defnormalgreater{>} defnormalplus{+} defnormaldollar{$}%$ font-lock fix

% This macro is used to make a character print one way in tt % (where it can probably be output as-is), and another way in other fonts, % where something hairier probably needs to be done. % % #1 is what to print if we are indeed using tt; #2 is what to print % otherwise. Since all the Computer Modern typewriter fonts have zero % interword stretch (and shrink), and it is reasonable to expect all % typewriter fonts to have this, we can check that font parameter. % defifusingtt#1#2{ifdim fontdimen3font=0pt #1else #2fi}

% Same as above, but check for italic font. Actually this also catches % non-italic slanted fonts since it is impossible to distinguish them from % italic fonts. But since this is only used by $ and it uses sl anyway % this is not a problem. defifusingit#1#2{ifdim fontdimen1font>0pt #1else #2fi}

% Turn off all special characters except @ % (and those which the user can use as if they were ordinary). % Most of these we simply print from the tt font, but for some, we can % use math or other variants that look better in normal text.

catcode`"=active defactivedoublequote{{ttchar34}} let“=activedoublequote catcode`~=active def~{{ttchar126}} chardefhat=`^ catcode`^=active def^{{tt hat}}

catcode`_=active def_{ifusingttnormalunderscore_} letrealunder=_ % Subroutine for the previous macro. def_{leavevmode kern.07em vbox{hrule width.3em height.1ex}kern .07em }

catcode`|=active def|{{ttchar124}} chardef less=`< catcode`<=active def<{{tt less}} chardef gtr=`> catcode`>=active def>{{tt gtr}} catcode`+=active def+{{tt char 43}} catcode`$=active def${ifusingit{{sl$}}normaldollar}%$ font-lock fix

% If a .fmt file is being used, characters that might appear in a file % name cannot be active until we have parsed the command line. % So turn them off again, and have everyjob (or @setfilename) turn them on. % otherifyactive is called near the end of this file. defotherifyactive{catcode`+=other catcode`_=other}

catcode`@=0

% backslashcurfont outputs one backslash character in current font, % as in char`\. globalchardefbackslashcurfont=`\ globalletrawbackslashxx=backslashcurfont % let existing .??s files work

% rawbackslash defines an active \ to do backslashcurfont. % otherbackslash defines an active \ to be a literal `' character with % catcode other. {catcode`\=active

@gdef@rawbackslash{@let\=@backslashcurfont}
@gdef@otherbackslash{@let\=@realbackslash}

}

% realbackslash is an actual character `' with catcode other, and % doublebackslash is two of them (for the pdf outlines). {catcode`\=other @gdef@realbackslash{} @gdef@doublebackslash{\}}

% normalbackslash outputs one backslash in fixed width font. defnormalbackslash{{ttbackslashcurfont}}

catcode`\=active

% Used sometimes to turn off (effectively) the active characters % even after parsing them. @def@turnoffactive{%

@let"=@normaldoublequote
@let\=@realbackslash
@let~=@normaltilde
@let^=@normalcaret
@let_=@normalunderscore
@let|=@normalverticalbar
@let<=@normalless
@let>=@normalgreater
@let+=@normalplus
@let$=@normaldollar %$ font-lock fix
@unsepspaces

}

% Same as @turnoffactive except outputs \ as {ttchar`\} instead of % the literal character `'. (Thus, \ is not expandable when this is in % effect.) % @def@normalturnoffactive{@turnoffactive @let=@normalbackslash}

% Make _ and + other characters, temporarily. % This is canceled by @fixbackslash. @otherifyactive

% If a .fmt file is being used, we don't want the `input texinfo' to show up. % That is what eatinput is for; after that, the `' should revert to printing % a backslash. % @gdef@eatinput input texinfo{@fixbackslash} @global@let\ = @eatinput

% On the other hand, perhaps the file did not have a `input texinfo'. Then % the first `{ in the file would cause an error. This macro tries to fix % that, assuming it is called before the first `' could plausibly occur. % Also turn back on active characters that might appear in the input % file name, in case not using a pre-dumped format. % @gdef@fixbackslash{%

@ifx\@eatinput @let\ = @normalbackslash @fi
@catcode`+=@active
@catcode`@_=@active

}

% Say @foo, not foo, in error messages. @escapechar = `@@

% These look ok in all fonts, so just make them not special. @catcode`@& = @other @catcode`@# = @other @catcode`@% = @other

@c Local variables: @c eval: (add-hook 'write-file-hooks 'time-stamp) @c page-delimiter: “^\\message” @c time-stamp-start: “def\\texinfoversion{” @c time-stamp-format: “%:y-%02m-%02d.%02H” @c time-stamp-end: “}” @c End:

@c vim:sw=2:

@ignore

arch-tag: e1b36e32-c96e-4135-a41a-0b2efa2ea115

@end ignore