File:  [gforth] / gforth / Attic / texinfo.tex
Revision 1.1: download - view: text, annotated - select for diffs
Tue Jan 10 18:57:47 1995 UTC (27 years, 8 months ago) by anton
Branches: MAIN
CVS tags: HEAD
Changes to make creation of info files possible
more documentation
included unistd.h in engine.c

    1: %% TeX macros to handle texinfo files
    2: 
    3: %   Copyright (C) 1985, 1986, 1988, 1990, 1991 Free Software Foundation, Inc.
    4: 
    5: %This texinfo.tex file is free software; you can redistribute it and/or
    6: %modify it under the terms of the GNU General Public License as
    7: %published by the Free Software Foundation; either version 2, or (at
    8: %your option) any later version.
    9: 
   10: %This texinfo.tex file is distributed in the hope that it will be
   11: %useful, but WITHOUT ANY WARRANTY; without even the implied warranty
   12: %of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   13: %General Public License for more details.
   14: 
   15: %You should have received a copy of the GNU General Public License
   16: %along with this texinfo.tex file; see the file COPYING.  If not, write
   17: %to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
   18: %USA.
   19: 
   20: 
   21: %In other words, you are welcome to use, share and improve this program.
   22: %You are forbidden to forbid anyone else to use, share and improve
   23: %what you give them.   Help stamp out software-hoarding!
   24: 
   25: \def\texinfoversion{2.72}
   26: \message{Loading texinfo package [Version \texinfoversion]:}
   27: \message{}
   28: 
   29: % Print the version number if in a .fmt file.
   30: \everyjob{\message{[Texinfo version \texinfoversion]}\message{}}
   31: 
   32: % Save some parts of plain tex whose names we will redefine.
   33: 
   34: \let\ptexlbrace=\{
   35: \let\ptexrbrace=\}
   36: \let\ptexdots=\dots
   37: \let\ptexdot=\.
   38: \let\ptexstar=\*
   39: \let\ptexend=\end
   40: \let\ptexbullet=\bullet
   41: \let\ptexb=\b
   42: \let\ptexc=\c
   43: \let\ptexi=\i
   44: \let\ptext=\t
   45: \let\ptexl=\l
   46: \let\ptexL=\L
   47: 
   48: \def\tie{\penalty 10000\ }     % Save plain tex definition of ~.
   49: 
   50: \message{Basics,}
   51: \chardef\other=12
   52: 
   53: % If this character appears in an error message or help string, it
   54: % starts a new line in the output.
   55: \newlinechar = `^^J
   56: 
   57: \hyphenation{ap-pen-dix}
   58: \hyphenation{mini-buf-fer mini-buf-fers}
   59: \hyphenation{eshell}
   60: 
   61: % Margin to add to right of even pages, to left of odd pages.
   62: \newdimen \bindingoffset  \bindingoffset=0pt
   63: \newdimen \normaloffset   \normaloffset=\hoffset
   64: \newdimen\pagewidth \newdimen\pageheight
   65: \pagewidth=\hsize \pageheight=\vsize
   66: 
   67: % Sometimes it is convenient to have everything in the transcript file
   68: % and nothing on the terminal.  We don't just call \tracingall here,
   69: % since that produces some useless output on the terminal.
   70: %
   71: \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
   72: \def\loggingall{\tracingcommands2 \tracingstats2 
   73:    \tracingpages1 \tracingoutput1 \tracinglostchars1 
   74:    \tracingmacros2 \tracingparagraphs1 \tracingrestores1 
   75:    \showboxbreadth\maxdimen\showboxdepth\maxdimen
   76: }%
   77: 
   78: %---------------------Begin change-----------------------
   79: %
   80: %%%% For @cropmarks command.
   81: % Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
   82: %
   83: \newdimen\cornerlong \newdimen\cornerthick
   84: \newdimen \topandbottommargin
   85: \newdimen \outerhsize \newdimen \outervsize
   86: \cornerlong=1pc\cornerthick=.3pt	% These set size of cropmarks
   87: \outerhsize=7in
   88: %\outervsize=9.5in
   89: % Alternative @smallbook page size is 9.25in
   90: \outervsize=9.25in
   91: \topandbottommargin=.75in
   92: %
   93: %---------------------End change-----------------------
   94: 
   95: % \onepageout takes a vbox as an argument.  Note that \pagecontents
   96: % does insertions itself, but you have to call it yourself.
   97: \chardef\PAGE=255  \output={\onepageout{\pagecontents\PAGE}}
   98: \def\onepageout#1{\hoffset=\normaloffset
   99: \ifodd\pageno  \advance\hoffset by \bindingoffset
  100: \else \advance\hoffset by -\bindingoffset\fi
  101: {\escapechar=`\\\relax % makes sure backslash is used in output files.
  102: \shipout\vbox{{\let\hsize=\pagewidth \makeheadline} \pagebody{#1}%
  103: {\let\hsize=\pagewidth \makefootline}}}%
  104: \advancepageno \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
  105: 
  106: %%%% For @cropmarks command %%%%
  107: 
  108: % Here is a modification of the main output routine for Near East Publications
  109: % This provides right-angle cropmarks at all four corners.
  110: % The contents of the page are centerlined into the cropmarks,
  111: % and any desired binding offset is added as an \hskip on either
  112: % site of the centerlined box.  (P. A. MacKay, 12 November, 1986)
  113: %
  114: \def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
  115: 		 \shipout
  116: 		 \vbox to \outervsize{\hsize=\outerhsize
  117:                  \vbox{\line{\ewtop\hfill\ewtop}}
  118:                  \nointerlineskip
  119:                  \line{\vbox{\moveleft\cornerthick\nstop}
  120:                        \hfill
  121:                        \vbox{\moveright\cornerthick\nstop}}
  122:                  \vskip \topandbottommargin
  123:                  \centerline{\ifodd\pageno\hskip\bindingoffset\fi
  124: 			\vbox{
  125: 			{\let\hsize=\pagewidth \makeheadline}
  126: 			\pagebody{#1}
  127: 			{\let\hsize=\pagewidth \makefootline}}
  128: 			\ifodd\pageno\else\hskip\bindingoffset\fi}
  129: 		 \vskip \topandbottommargin plus1fill minus1fill
  130:                  \boxmaxdepth\cornerthick
  131:                  \line{\vbox{\moveleft\cornerthick\nsbot}
  132:                        \hfill
  133:                        \vbox{\moveright\cornerthick\nsbot}}
  134:                  \nointerlineskip
  135:                  \vbox{\line{\ewbot\hfill\ewbot}}
  136: 	}
  137:   \advancepageno 
  138:   \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
  139: %
  140: % Do @cropmarks to get crop marks
  141: \def\cropmarks{\let\onepageout=\croppageout }
  142: 
  143: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
  144: {\catcode`\@ =11
  145: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
  146: \dimen@=\dp#1 \unvbox#1
  147: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
  148: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
  149: }
  150: 
  151: %
  152: % Here are the rules for the cropmarks.  Note that they are
  153: % offset so that the space between them is truly \outerhsize or \outervsize
  154: % (P. A. MacKay, 12 November, 1986)
  155: %
  156: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
  157: \def\nstop{\vbox
  158:   {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
  159: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
  160: \def\nsbot{\vbox
  161:   {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
  162: 
  163: % Parse an argument, then pass it to #1.
  164: % The argument can be delimited with [...] or with "..." or braces
  165: % or it can be a whole line.
  166: % #1 should be a macro which expects
  167: % an ordinary undelimited TeX argument.
  168: 
  169: \def\parsearg #1{\let\next=#1\begingroup\obeylines\futurelet\temp\parseargx}
  170: 
  171: \def\parseargx{%
  172: \ifx \obeyedspace\temp \aftergroup\parseargdiscardspace \else%
  173: \aftergroup \parseargline %
  174: \fi \endgroup}
  175: 
  176: {\obeyspaces %
  177: \gdef\parseargdiscardspace {\begingroup\obeylines\futurelet\temp\parseargx}}
  178: 
  179: \gdef\obeyedspace{\ }
  180: 
  181: \def\parseargline{\begingroup \obeylines \parsearglinex}
  182: {\obeylines %
  183: \gdef\parsearglinex #1^^M{\endgroup \next {#1}}}
  184: 
  185: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
  186: 
  187: %% These are used to keep @begin/@end levels from running away
  188: %% Call \inENV within environments (after a \begingroup)
  189: \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
  190: \def\ENVcheck{%
  191: \ifENV\errmessage{Still within an environment.  Type Return to continue.}
  192: \endgroup\fi} % This is not perfect, but it should reduce lossage
  193: 
  194: % @begin foo  is the same as @foo, for now.
  195: \newhelp\EMsimple{Type <Return> to continue}
  196: 
  197: \outer\def\begin{\parsearg\beginxxx}
  198: 
  199: \def\beginxxx #1{%
  200: \expandafter\ifx\csname #1\endcsname\relax
  201: {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
  202: \csname #1\endcsname\fi}
  203: 
  204: %% @end foo executes the definition of \Efoo.
  205: %% foo can be delimited by doublequotes or brackets.
  206: 
  207: \def\end{\parsearg\endxxx}
  208: 
  209: \def\endxxx #1{%
  210: \expandafter\ifx\csname E#1\endcsname\relax
  211: \expandafter\ifx\csname #1\endcsname\relax
  212: \errmessage{Undefined command @end #1}\else
  213: \errorE{#1}\fi\fi
  214: \csname E#1\endcsname}
  215: \def\errorE#1{
  216: {\errhelp=\EMsimple \errmessage{@end #1 not within #1 environment}}}
  217: 
  218: % Single-spacing is done by various environments.
  219: 
  220: \newskip\singlespaceskip \singlespaceskip = \baselineskip
  221: \def\singlespace{%
  222: {\advance \baselineskip by -\singlespaceskip
  223: \kern \baselineskip}%
  224: \baselineskip=\singlespaceskip
  225: }
  226: 
  227: %% Simple single-character @ commands
  228: 
  229: % @@ prints an @
  230: % Kludge this until the fonts are right (grr).
  231: \def\@{{\tt \char '100}}
  232: 
  233: % Define @` and @' to be the same as ` and '
  234: % but suppressing ligatures.
  235: \def\`{{`}}
  236: \def\'{{'}}
  237: 
  238: % Used to generate quoted braces.
  239: 
  240: \def\mylbrace {{\tt \char '173}}
  241: \def\myrbrace {{\tt \char '175}}
  242: \let\{=\mylbrace
  243: \let\}=\myrbrace
  244: 
  245: % @: forces normal size whitespace following.
  246: \def\:{\spacefactor=1000 }
  247: 
  248: % @* forces a line break.
  249: \def\*{\hfil\break\hbox{}\ignorespaces}
  250: 
  251: % @. is an end-of-sentence period.
  252: \def\.{.\spacefactor=3000 }
  253: 
  254: % @w prevents a word break.  Without the \leavevmode, @w at the
  255: % beginning of a paragraph, when TeX is still in vertical mode, would
  256: % produce a whole line of output instead of starting the paragraph.
  257: \def\w#1{\leavevmode\hbox{#1}}
  258: 
  259: % @group ... @end group forces ... to be all on one page, by enclosing
  260: % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box
  261: % to keep its height that of a normal line.  According to the rules for
  262: % \topskip (p.114 of the TeXbook), the glue inserted is
  263: % max (\topskip - \ht (first item), 0).  If that height is large,
  264: % therefore, no glue is inserted, and the space between the headline and
  265: % the text is small, which looks bad.
  266: % 
  267: \def\group{\begingroup
  268:   \ifnum\catcode13=\active \else
  269:     \errhelp = \groupinvalidhelp
  270:     \errmessage{@group invalid in context where filling is enabled}%
  271:   \fi
  272:   \def\Egroup{\egroup\endgroup}%
  273:   \vtop\bgroup
  274: }
  275: %
  276: % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
  277: % message, so this ends up printing `@group can only ...'.
  278: % 
  279: \newhelp\groupinvalidhelp{%
  280: group can only be used in environments such as @example,^^J%
  281: where each line of input produces a line of output.}
  282: 
  283: % @need space-in-mils
  284: % forces a page break if there is not space-in-mils remaining.
  285: 
  286: \newdimen\mil  \mil=0.001in
  287: 
  288: \def\need{\parsearg\needx}
  289: 
  290: % Old definition--didn't work.
  291: %\def\needx #1{\par %
  292: %% This method tries to make TeX break the page naturally
  293: %% if the depth of the box does not fit.
  294: %{\baselineskip=0pt%
  295: %\vtop to #1\mil{\vfil}\kern -#1\mil\penalty 10000
  296: %\prevdepth=-1000pt
  297: %}}
  298: 
  299: \def\needx#1{%
  300:   % Go into vertical mode, so we don't make a big box in the middle of a
  301:   % paragraph.
  302:   \par
  303:   %
  304:   % Don't add any leading before our big empty box, but allow a page
  305:   % break, since the best break might be right here.
  306:   \allowbreak
  307:   \nointerlineskip
  308:   \vtop to #1\mil{\vfil}%
  309:   % 
  310:   % TeX does not even consider page breaks if a penalty added to the
  311:   % main vertical list is 10000 or more.  But in order to see if the
  312:   % empty box we just added fits on the page, we must make it consider
  313:   % page breaks.  On the other hand, we don't want to actually break the
  314:   % page after the empty box.  So we use a penalty of 9999.
  315:   % 
  316:   % There is an extremely small chance that TeX will actually break the
  317:   % page at this \penalty, if there are no other feasible breakpoints in
  318:   % sight.  (If the user is using lots of big @group commands, which
  319:   % almost-but-not-quite fill up a page, TeX will have a hard time doing
  320:   % good page breaking, for example.)  However, I could not construct an
  321:   % example where a page broke at this \penalty; if it happens in a real
  322:   % document, then we can reconsider our strategy.
  323:   \penalty9999
  324:   %
  325:   % Back up by the size of the box, whether we did a page break or not.
  326:   \kern -#1\mil
  327:   %
  328:   % Do not allow a page break right after this kern.
  329:   \nobreak
  330: }
  331: 
  332: % @br   forces paragraph break
  333: 
  334: \let\br = \par
  335: 
  336: % @dots{}  output some dots
  337: 
  338: \def\dots{$\ldots$}
  339: 
  340: % @page    forces the start of a new page
  341: 
  342: \def\page{\par\vfill\supereject}
  343: 
  344: % @exdent text....
  345: % outputs text on separate line in roman font, starting at standard page margin
  346: 
  347: % This records the amount of indent in the innermost environment.
  348: % That's how much \exdent should take out.
  349: \newskip\exdentamount
  350: 
  351: % This defn is used inside fill environments such as @defun.
  352: \def\exdent{\parsearg\exdentyyy}
  353: \def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
  354: 
  355: % This defn is used inside nofill environments such as @example.
  356: \def\nofillexdent{\parsearg\nofillexdentyyy}
  357: \def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
  358: \leftline{\hskip\leftskip{\rm#1}}}}
  359: 
  360: %\hbox{{\rm#1}}\hfil\break}}
  361: 
  362: % @include file    insert text of that file as input.
  363: 
  364: \def\include{\parsearg\includezzz}
  365: \def\includezzz #1{{\def\thisfile{#1}\input #1
  366: }}
  367: 
  368: \def\thisfile{}
  369: 
  370: % @center line   outputs that line, centered
  371: 
  372: \def\center{\parsearg\centerzzz}
  373: \def\centerzzz #1{{\advance\hsize by -\leftskip
  374: \advance\hsize by -\rightskip
  375: \centerline{#1}}}
  376: 
  377: % @sp n   outputs n lines of vertical space
  378: 
  379: \def\sp{\parsearg\spxxx}
  380: \def\spxxx #1{\par \vskip #1\baselineskip}
  381: 
  382: % @comment ...line which is ignored...
  383: % @c is the same as @comment
  384: % @ignore ... @end ignore  is another way to write a comment
  385: 
  386: \def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
  387: \parsearg \commentxxx}
  388: 
  389: \def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
  390: 
  391: \let\c=\comment
  392: 
  393: % Prevent errors for section commands.
  394: % Used in @ignore and in failing conditionals.
  395: \def\ignoresections{%
  396: \let\chapter=\relax
  397: \let\unnumbered=\relax
  398: \let\top=\relax
  399: \let\unnumberedsec=\relax
  400: \let\unnumberedsection=\relax
  401: \let\unnumberedsubsec=\relax
  402: \let\unnumberedsubsection=\relax
  403: \let\unnumberedsubsubsec=\relax
  404: \let\unnumberedsubsubsection=\relax
  405: \let\section=\relax
  406: \let\subsec=\relax
  407: \let\subsubsec=\relax
  408: \let\subsection=\relax
  409: \let\subsubsection=\relax
  410: \let\appendix=\relax
  411: \let\appendixsec=\relax
  412: \let\appendixsection=\relax
  413: \let\appendixsubsec=\relax
  414: \let\appendixsubsection=\relax
  415: \let\appendixsubsubsec=\relax
  416: \let\appendixsubsubsection=\relax
  417: \let\contents=\relax
  418: \let\smallbook=\relax
  419: \let\titlepage=\relax
  420: }
  421: 
  422: \def\ignore{\begingroup\ignoresections
  423: % Make sure that spaces turn into tokens that match what \ignorexxx wants.
  424: \catcode32=10
  425: \ignorexxx}
  426: \long\def\ignorexxx #1\end ignore{\endgroup\ignorespaces}
  427: 
  428: \def\direntry{\begingroup\direntryxxx}
  429: \long\def\direntryxxx #1\end direntry{\endgroup\ignorespaces}
  430: 
  431: % Conditionals to test whether a flag is set.
  432: 
  433: \def\ifset{\begingroup\ignoresections\parsearg\ifsetxxx}
  434: 
  435: \def\ifsetxxx #1{\endgroup
  436: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\ifsetfail
  437: \else \let\temp=\relax \fi
  438: \temp}
  439: \def\Eifset{}
  440: \def\ifsetfail{\begingroup\ignoresections\ifsetfailxxx}
  441: \long\def\ifsetfailxxx #1\end ifset{\endgroup\ignorespaces}
  442: 
  443: \def\ifclear{\begingroup\ignoresections\parsearg\ifclearxxx}
  444: 
  445: \def\ifclearxxx #1{\endgroup
  446: \expandafter\ifx\csname IF#1\endcsname\relax \let\temp=\relax
  447: \else \let\temp=\ifclearfail \fi
  448: \temp}
  449: \def\Eifclear{}
  450: \def\ifclearfail{\begingroup\ignoresections\ifclearfailxxx}
  451: \long\def\ifclearfailxxx #1\end ifclear{\endgroup\ignorespaces}
  452: 
  453: % @set foo     to set the flag named foo.
  454: % @clear foo   to clear the flag named foo.
  455: \def\set{\parsearg\setxxx}
  456: \def\setxxx #1{
  457: \expandafter\let\csname IF#1\endcsname=\set}
  458: 
  459: \def\clear{\parsearg\clearxxx}
  460: \def\clearxxx #1{
  461: \expandafter\let\csname IF#1\endcsname=\relax}
  462: 
  463: % Some texinfo constructs that are trivial in tex
  464: 
  465: \def\iftex{}
  466: \def\Eiftex{}
  467: \def\ifinfo{\begingroup\ignoresections\ifinfoxxx}
  468: \long\def\ifinfoxxx #1\end ifinfo{\endgroup\ignorespaces}
  469: 
  470: \long\def\menu #1\end menu{}
  471: \def\asis#1{#1}
  472: 
  473: % @math means output in math mode.
  474: % We don't use $'s directly in the definition of \math because control
  475: % sequences like \math are expanded when the toc file is written.  Then,
  476: % we read the toc file back, the $'s will be normal characters (as they
  477: % should be, according to the definition of Texinfo).  So we must use a
  478: % control sequence to switch into and out of math mode.
  479: % 
  480: % This isn't quite enough for @math to work properly in indices, but it
  481: % seems unlikely it will ever be needed there.
  482: % 
  483: \let\implicitmath = $
  484: \def\math#1{\implicitmath #1\implicitmath}
  485: 
  486: \def\node{\ENVcheck\parsearg\nodezzz}
  487: \def\nodezzz#1{\nodexxx [#1,]}
  488: \def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
  489: \let\lastnode=\relax
  490: 
  491: \def\donoderef{\ifx\lastnode\relax\else
  492: \expandafter\expandafter\expandafter\setref{\lastnode}\fi
  493: \let\lastnode=\relax}
  494: 
  495: \def\unnumbnoderef{\ifx\lastnode\relax\else
  496: \expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
  497: \let\lastnode=\relax}
  498: 
  499: \def\appendixnoderef{\ifx\lastnode\relax\else
  500: \expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
  501: \let\lastnode=\relax}
  502: 
  503: \let\refill=\relax
  504:   
  505: % @setfilename is done at the beginning of every texinfo file.
  506: % So open here the files we need to have open while reading the input.
  507: % This makes it possible to make a .fmt file for texinfo.
  508: \def\setfilename{%
  509:    \readauxfile
  510:    \opencontents
  511:    \openindices
  512:    \fixbackslash  % Turn off hack to swallow `\input texinfo'.
  513:    \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
  514:    \comment % Ignore the actual filename.
  515: }
  516: 
  517: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
  518: 
  519: \def\inforef #1{\inforefzzz #1,,,,**}
  520: \def\inforefzzz #1,#2,#3,#4**{See Info file \file{\losespace#3{}},
  521:   node \samp{\losespace#1{}}}
  522: \def\losespace #1{#1}
  523: 
  524: \message{fonts,}
  525: 
  526: % Font-change commands.
  527: 
  528: % Texinfo supports the sans serif font style, which plain TeX does not.
  529: % So we set up a \sf analogous to plain's \rm, etc.
  530: \newfam\sffam
  531: \def\sf{\fam=\sffam \tensf}
  532: \let\li = \sf % Sometimes we call it \li, not \sf.
  533: 
  534: %% Try out Computer Modern fonts at \magstephalf
  535: \let\mainmagstep=\magstephalf
  536: 
  537: \ifx\bigger\relax
  538: \let\mainmagstep=\magstep1
  539: \font\textrm=cmr12
  540: \font\texttt=cmtt12
  541: \else
  542: \font\textrm=cmr10 scaled \mainmagstep
  543: \font\texttt=cmtt10 scaled \mainmagstep
  544: \fi
  545: % Instead of cmb10, you many want to use cmbx10.
  546: % cmbx10 is a prettier font on its own, but cmb10
  547: % looks better when embedded in a line with cmr10.
  548: \font\textbf=cmb10 scaled \mainmagstep 
  549: \font\textit=cmti10 scaled \mainmagstep
  550: \font\textsl=cmsl10 scaled \mainmagstep
  551: \font\textsf=cmss10 scaled \mainmagstep
  552: \font\textsc=cmcsc10 scaled \mainmagstep
  553: \font\texti=cmmi10 scaled \mainmagstep
  554: \font\textsy=cmsy10 scaled \mainmagstep
  555: 
  556: % A few fonts for @defun, etc.
  557: \font\defbf=cmbx10 scaled \magstep1 %was 1314
  558: \font\deftt=cmtt10 scaled \magstep1
  559: \def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
  560: 
  561: % Fonts for indices and small examples.
  562: % We actually use the slanted font rather than the italic, 
  563: % because texinfo normally uses the slanted fonts for that.
  564: % Do not make many font distinctions in general in the index, since they
  565: % aren't very useful.
  566: \font\ninett=cmtt9
  567: \font\indrm=cmr9
  568: \font\indit=cmsl9
  569: \let\indsl=\indit
  570: \let\indtt=\ninett
  571: \let\indsf=\indrm
  572: \let\indbf=\indrm
  573: \let\indsc=\indrm
  574: \font\indi=cmmi9
  575: \font\indsy=cmsy9
  576: 
  577: % Fonts for headings
  578: \font\chaprm=cmbx12 scaled \magstep2
  579: \font\chapit=cmti12 scaled \magstep2
  580: \font\chapsl=cmsl12 scaled \magstep2
  581: \font\chaptt=cmtt12 scaled \magstep2
  582: \font\chapsf=cmss12 scaled \magstep2
  583: \let\chapbf=\chaprm
  584: \font\chapsc=cmcsc10 scaled\magstep3
  585: \font\chapi=cmmi12 scaled \magstep2
  586: \font\chapsy=cmsy10 scaled \magstep3
  587: 
  588: \font\secrm=cmbx12 scaled \magstep1
  589: \font\secit=cmti12 scaled \magstep1
  590: \font\secsl=cmsl12 scaled \magstep1
  591: \font\sectt=cmtt12 scaled \magstep1
  592: \font\secsf=cmss12 scaled \magstep1
  593: \font\secbf=cmbx12 scaled \magstep1
  594: \font\secsc=cmcsc10 scaled\magstep2
  595: \font\seci=cmmi12 scaled \magstep1
  596: \font\secsy=cmsy10 scaled \magstep2
  597: 
  598: % \font\ssecrm=cmbx10 scaled \magstep1    % This size an font looked bad.
  599: % \font\ssecit=cmti10 scaled \magstep1    % The letters were too crowded.
  600: % \font\ssecsl=cmsl10 scaled \magstep1
  601: % \font\ssectt=cmtt10 scaled \magstep1
  602: % \font\ssecsf=cmss10 scaled \magstep1
  603: 
  604: %\font\ssecrm=cmb10 scaled 1315	% Note the use of cmb rather than cmbx.
  605: %\font\ssecit=cmti10 scaled 1315	% Also, the size is a little larger than
  606: %\font\ssecsl=cmsl10 scaled 1315	% being scaled magstep1.
  607: %\font\ssectt=cmtt10 scaled 1315
  608: %\font\ssecsf=cmss10 scaled 1315
  609: 
  610: %\let\ssecbf=\ssecrm
  611: 
  612: \font\ssecrm=cmbx12 scaled \magstephalf
  613: \font\ssecit=cmti12 scaled \magstephalf
  614: \font\ssecsl=cmsl12 scaled \magstephalf
  615: \font\ssectt=cmtt12 scaled \magstephalf
  616: \font\ssecsf=cmss12 scaled \magstephalf
  617: \font\ssecbf=cmbx12 scaled \magstephalf
  618: \font\ssecsc=cmcsc10 scaled \magstep1 
  619: \font\sseci=cmmi12 scaled \magstephalf
  620: \font\ssecsy=cmsy10 scaled \magstep1
  621: % The smallcaps and symbol fonts should actually be scaled \magstep1.5,
  622: % but that is not a standard magnification.
  623: 
  624: % Fonts for title page:
  625: \font\titlerm = cmbx12 scaled \magstep3
  626: \let\authorrm = \secrm
  627: 
  628: % In order for the font changes to affect most math symbols and letters,
  629: % we have to define the \textfont of the standard families.  Since
  630: % texinfo doesn't allow for producing subscripts and superscripts, we
  631: % don't bother to reset \scriptfont and \scriptscriptfont (which would
  632: % also require loading a lot more fonts).
  633: % 
  634: \def\resetmathfonts{%
  635:   \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
  636:   \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
  637:   \textfont\ttfam = \tentt \textfont\sffam = \tensf
  638: }
  639: 
  640: 
  641: % The font-changing commands redefine the meanings of \tenSTYLE, instead
  642: % of just \STYLE.  We do this so that font changes will continue to work
  643: % in math mode, where it is the current \fam that is relevant in most
  644: % cases, not the current.  Plain TeX does, for example,
  645: % \def\bf{\fam=\bffam \tenbf}  By redefining \tenbf, we obviate the need
  646: % to redefine \bf itself.  
  647: \def\textfonts{%
  648:   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
  649:   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
  650:   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy
  651:   \resetmathfonts}
  652: \def\chapfonts{%
  653:   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl 
  654:   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
  655:   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy
  656:   \resetmathfonts}
  657: \def\secfonts{%
  658:   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
  659:   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
  660:   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy
  661:   \resetmathfonts}
  662: \def\subsecfonts{%
  663:   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
  664:   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
  665:   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy
  666:   \resetmathfonts}
  667: \def\indexfonts{%
  668:   \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
  669:   \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
  670:   \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy
  671:   \resetmathfonts}
  672: 
  673: % Set up the default fonts, so we can use them for creating boxes.
  674: % 
  675: \textfonts
  676: 
  677: % Count depth in font-changes, for error checks
  678: \newcount\fontdepth \fontdepth=0
  679: 
  680: % Fonts for short table of contents.
  681: \font\shortcontrm=cmr12
  682: \font\shortcontbf=cmbx12
  683: \font\shortcontsl=cmsl12
  684: 
  685: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
  686: %% serif) and @ii for TeX italic
  687: 
  688: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
  689: % unless the following character is such as not to need one.
  690: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
  691: \def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
  692: 
  693: \let\i=\smartitalic
  694: \let\var=\smartitalic
  695: \let\dfn=\smartitalic
  696: \let\emph=\smartitalic
  697: \let\cite=\smartitalic
  698: 
  699: \def\b#1{{\bf #1}}
  700: \let\strong=\b
  701: 
  702: \def\t#1{{\tt \exhyphenpenalty=10000\rawbackslash \frenchspacing #1}\null}
  703: \let\ttfont = \t
  704: %\def\samp #1{`{\tt \rawbackslash \frenchspacing #1}'\null}
  705: \def\samp #1{`\tclose{#1}'\null}
  706: \def\key #1{{\tt \exhyphenpenalty=10000\uppercase{#1}}\null}
  707: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
  708: 
  709: \let\file=\samp
  710: 
  711: % @code is a modification of @t,
  712: % which makes spaces the same size as normal in the surrounding text.
  713: \newdimen\tclosesave
  714: \newdimen\tcloserm
  715: \def\tclose#1{{\rm \tcloserm=\fontdimen2\font \tt \tclosesave=\fontdimen2\font
  716: \fontdimen2\font=\tcloserm
  717: % prevent breaking lines at hyphens.
  718: \exhyphenpenalty=10000
  719: \def\ {{\fontdimen2\font=\tclosesave{} }}%
  720:  \rawbackslash \frenchspacing #1\fontdimen2\font=\tclosesave}\null}
  721: \let\code=\tclose
  722: %\let\exp=\tclose  %Was temporary
  723: 
  724: % @kbd is like @code, except that if the argument is just one @key command, 
  725: % then @kbd has no effect.
  726: 
  727: \def\xkey{\key}
  728: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
  729: \ifx\one\xkey\ifx\threex\three \key{#2}%
  730: \else\tclose{\look}\fi
  731: \else\tclose{\look}\fi}
  732: 
  733: % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the
  734: % argument is to make the input look right: @dmn{pt} instead of
  735: % @dmn{}pt.
  736: % 
  737: \def\dmn#1{\thinspace #1}
  738: 
  739: \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
  740: 
  741: \def\l#1{{\li #1}\null}		% 
  742: 
  743: \def\r#1{{\rm #1}}		% roman font
  744: % Use of \lowercase was suggested.
  745: \def\sc#1{{\smallcaps#1}}	% smallcaps font
  746: \def\ii#1{{\it #1}}		% italic font
  747: 
  748: \message{page headings,}
  749: 
  750: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
  751: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
  752: 
  753: % First the title page.  Must do @settitle before @titlepage.
  754: \def\titlefont#1{{\titlerm #1}}
  755: 
  756: \newtoks\realeverypar
  757: \newif\ifseenauthor
  758: \newif\iffinishedtitlepage
  759: 
  760: \def\titlepage{\begingroup \parindent=0pt \textfonts
  761:    \let\subtitlerm=\tenrm
  762: % I deinstalled the following change because \cmr12 is undefined.
  763: % This change was not in the ChangeLog anyway.  --rms.
  764: %   \let\subtitlerm=\cmr12
  765:    \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
  766:    %
  767:    \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
  768:    %
  769:    % Leave some space at the very top of the page.
  770:    \vglue\titlepagetopglue
  771:    %
  772:    % Now you can print the title using @title.
  773:    \def\title{\parsearg\titlezzz}%
  774:    \def\titlezzz##1{\leftline{\titlefont{##1}}
  775: 		    % print a rule at the page bottom also.
  776: 		    \finishedtitlepagefalse
  777: 		    \vskip4pt \hrule height 4pt \vskip4pt}%
  778:    % No rule at page bottom unless we print one at the top with @title.
  779:    \finishedtitlepagetrue
  780:    %
  781:    % Now you can put text using @subtitle.
  782:    \def\subtitle{\parsearg\subtitlezzz}%
  783:    \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
  784:    %
  785:    % @author should come last, but may come many times.
  786:    \def\author{\parsearg\authorzzz}%
  787:    \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
  788:       {\authorfont \leftline{##1}}}%
  789:    %  
  790:    % Most title ``pages'' are actually two pages long, with space
  791:    % at the top of the second.  We don't want the ragged left on the second.
  792:    \let\oldpage = \page
  793:    \def\page{%
  794:       \iffinishedtitlepage\else
  795: 	 \finishtitlepage
  796:       \fi
  797:       \oldpage
  798:       \let\page = \oldpage
  799:       \hbox{}}%
  800: %   \def\page{\oldpage \hbox{}}
  801: }
  802: 
  803: \def\Etitlepage{%
  804:    \iffinishedtitlepage\else
  805:       \finishtitlepage
  806:    \fi
  807:    % It is important to do the page break before ending the group,
  808:    % because the headline and footline are only empty inside the group.
  809:    % If we use the new definition of \page, we always get a blank page
  810:    % after the title page, which we certainly don't want.
  811:    \oldpage
  812:    \endgroup
  813:    \HEADINGSon
  814: }
  815: 
  816: \def\finishtitlepage{%
  817:    \vskip4pt \hrule height 2pt
  818:    \vskip\titlepagebottomglue
  819:    \finishedtitlepagetrue
  820: }
  821: 
  822: %%% Set up page headings and footings.
  823: 
  824: \let\thispage=\folio
  825: 
  826: \newtoks \evenheadline    % Token sequence for heading line of even pages
  827: \newtoks \oddheadline     % Token sequence for heading line of odd pages
  828: \newtoks \evenfootline    % Token sequence for footing line of even pages
  829: \newtoks \oddfootline     % Token sequence for footing line of odd pages
  830: 
  831: % Now make Tex use those variables
  832: \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
  833:                             \else \the\evenheadline \fi}}
  834: \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
  835:                             \else \the\evenfootline \fi}\HEADINGShook}
  836: \let\HEADINGShook=\relax
  837: 
  838: % Commands to set those variables.
  839: % For example, this is what  @headings on  does
  840: % @evenheading @thistitle|@thispage|@thischapter
  841: % @oddheading @thischapter|@thispage|@thistitle
  842: % @evenfooting @thisfile||
  843: % @oddfooting ||@thisfile
  844: 
  845: \def\evenheading{\parsearg\evenheadingxxx}
  846: \def\oddheading{\parsearg\oddheadingxxx}
  847: \def\everyheading{\parsearg\everyheadingxxx}
  848: 
  849: \def\evenfooting{\parsearg\evenfootingxxx}
  850: \def\oddfooting{\parsearg\oddfootingxxx}
  851: \def\everyfooting{\parsearg\everyfootingxxx}
  852: 
  853: {\catcode`\@=0 %
  854: 
  855: \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
  856: \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
  857: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  858: 
  859: \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
  860: \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
  861: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  862: 
  863: \gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
  864: \gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
  865: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
  866: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  867: 
  868: \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
  869: \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
  870: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  871: 
  872: \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
  873: \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
  874: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  875: 
  876: \gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
  877: \gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
  878: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
  879: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
  880: %
  881: }% unbind the catcode of @.
  882: 
  883: % @headings double	turns headings on for double-sided printing.
  884: % @headings single	turns headings on for single-sided printing.
  885: % @headings off		turns them off.
  886: % @headings on		same as @headings double, retained for compatibility.
  887: % @headings after	turns on double-sided headings after this page.
  888: % @headings doubleafter	turns on double-sided headings after this page.
  889: % @headings singleafter turns on single-sided headings after this page.
  890: % By default, they are off.
  891: 
  892: \def\headings #1 {\csname HEADINGS#1\endcsname}
  893: 
  894: \def\HEADINGSoff{
  895: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
  896: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
  897: \HEADINGSoff
  898: % When we turn headings on, set the page number to 1.
  899: % For double-sided printing, put current file name in lower left corner,
  900: % chapter name on inside top of right hand pages, document
  901: % title on inside top of left hand pages, and page numbers on outside top
  902: % edge of all pages.
  903: \def\HEADINGSdouble{
  904: %\pagealignmacro
  905: \global\pageno=1
  906: \global\evenfootline={\hfil}
  907: \global\oddfootline={\hfil}
  908: \global\evenheadline={\line{\folio\hfil\thistitle}}
  909: \global\oddheadline={\line{\thischapter\hfil\folio}}
  910: }
  911: % For single-sided printing, chapter title goes across top left of page,
  912: % page number on top right.
  913: \def\HEADINGSsingle{
  914: %\pagealignmacro
  915: \global\pageno=1
  916: \global\evenfootline={\hfil}
  917: \global\oddfootline={\hfil}
  918: \global\evenheadline={\line{\thischapter\hfil\folio}}
  919: \global\oddheadline={\line{\thischapter\hfil\folio}}
  920: }
  921: \def\HEADINGSon{\HEADINGSdouble}
  922: 
  923: \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
  924: \let\HEADINGSdoubleafter=\HEADINGSafter
  925: \def\HEADINGSdoublex{%
  926: \global\evenfootline={\hfil}
  927: \global\oddfootline={\hfil}
  928: \global\evenheadline={\line{\folio\hfil\thistitle}}
  929: \global\oddheadline={\line{\thischapter\hfil\folio}}
  930: }
  931: 
  932: \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
  933: \def\HEADINGSsinglex{%
  934: \global\evenfootline={\hfil}
  935: \global\oddfootline={\hfil}
  936: \global\evenheadline={\line{\thischapter\hfil\folio}}
  937: \global\oddheadline={\line{\thischapter\hfil\folio}}
  938: }
  939: 
  940: % Subroutines used in generating headings
  941: % Produces Day Month Year style of output.
  942: \def\today{\number\day\space
  943: \ifcase\month\or
  944: January\or February\or March\or April\or May\or June\or
  945: July\or August\or September\or October\or November\or December\fi
  946: \space\number\year}
  947: 
  948: % Use this if you want the Month Day, Year style of output.
  949: %\def\today{\ifcase\month\or
  950: %January\or February\or March\or April\or May\or June\or
  951: %July\or August\or September\or October\or November\or December\fi
  952: %\space\number\day, \number\year}
  953: 
  954: % @settitle line...  specifies the title of the document, for headings
  955: % It generates no output of its own
  956: 
  957: \def\thistitle{No Title}
  958: \def\settitle{\parsearg\settitlezzz}
  959: \def\settitlezzz #1{\gdef\thistitle{#1}}
  960: 
  961: \message{tables,}
  962: 
  963: % @tabs -- simple alignment
  964: 
  965: % These don't work.  For one thing, \+ is defined as outer.
  966: % So these macros cannot even be defined.
  967: 
  968: %\def\tabs{\parsearg\tabszzz}
  969: %\def\tabszzz #1{\settabs\+#1\cr}
  970: %\def\tabline{\parsearg\tablinezzz}
  971: %\def\tablinezzz #1{\+#1\cr}
  972: %\def\&{&}
  973: 
  974: % Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
  975: 
  976: % default indentation of table text
  977: \newdimen\tableindent \tableindent=.8in
  978: % default indentation of @itemize and @enumerate text
  979: \newdimen\itemindent  \itemindent=.3in
  980: % margin between end of table item and start of table text.
  981: \newdimen\itemmargin  \itemmargin=.1in
  982: 
  983: % used internally for \itemindent minus \itemmargin
  984: \newdimen\itemmax
  985: 
  986: % Note @table, @vtable, and @vtable define @item, @itemx, etc., with
  987: % these defs.
  988: % They also define \itemindex
  989: % to index the item name in whatever manner is desired (perhaps none).
  990: 
  991: \def\internalBitem{\smallbreak \parsearg\itemzzz}
  992: \def\internalBitemx{\par \parsearg\itemzzz}
  993: 
  994: \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
  995: \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \par \parsearg\xitemzzz}
  996: 
  997: \def\internalBkitem{\smallbreak \parsearg\kitemzzz}
  998: \def\internalBkitemx{\par \parsearg\kitemzzz}
  999: 
 1000: \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
 1001:                  \itemzzz {#1}}
 1002: 
 1003: \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
 1004:                  \itemzzz {#1}}
 1005: 
 1006: \def\itemzzz #1{\begingroup %
 1007:   \advance\hsize by -\rightskip
 1008:   \advance\hsize by -\tableindent
 1009:   \setbox0=\hbox{\itemfont{#1}}%
 1010:   \itemindex{#1}%
 1011:   \nobreak % This prevents a break before @itemx.
 1012:   %
 1013:   % Be sure we are not still in the middle of a paragraph.
 1014:   \parskip=0in
 1015:   \par
 1016:   %
 1017:   % If the item text does not fit in the space we have, put it on a line
 1018:   % by itself, and do not allow a page break either before or after that
 1019:   % line.  We do not start a paragraph here because then if the next
 1020:   % command is, e.g., @kindex, the whatsit would get put into the
 1021:   % horizontal list on a line by itself, resulting in extra blank space.
 1022:   \ifdim \wd0>\itemmax
 1023:     \setbox0=\hbox{\hskip \leftskip \hskip -\tableindent \unhbox0}\box0
 1024:     \nobreak
 1025:   \else
 1026:     % The item text fits into the space.  Start a paragraph, so that the
 1027:     % following text (if any) will end up on the same line.  Since that
 1028:     % text will be indented by \tableindent, we make the item text be in
 1029:     % a zero-width box.
 1030:     \noindent
 1031:     \rlap{\hskip -\tableindent\box0}%
 1032:   \fi
 1033:   \endgroup
 1034: }
 1035: 
 1036: \def\item{\errmessage{@item while not in a table}}
 1037: \def\itemx{\errmessage{@itemx while not in a table}}
 1038: \def\kitem{\errmessage{@kitem while not in a table}}
 1039: \def\kitemx{\errmessage{@kitemx while not in a table}}
 1040: \def\xitem{\errmessage{@xitem while not in a table}}
 1041: \def\xitemx{\errmessage{@xitemx while not in a table}}
 1042: 
 1043: %% Contains a kludge to get @end[description] to work
 1044: \def\description{\tablez{\dontindex}{1}{}{}{}{}}
 1045: 
 1046: \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
 1047: {\obeylines\obeyspaces%
 1048: \gdef\tablex #1^^M{%
 1049: \tabley\dontindex#1        \endtabley}}
 1050: 
 1051: \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
 1052: {\obeylines\obeyspaces%
 1053: \gdef\ftablex #1^^M{%
 1054: \tabley\fnitemindex#1        \endtabley
 1055: \def\Eftable{\endgraf\endgroup\afterenvbreak}%
 1056: \let\Etable=\relax}}
 1057: 
 1058: \def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
 1059: {\obeylines\obeyspaces%
 1060: \gdef\vtablex #1^^M{%
 1061: \tabley\vritemindex#1        \endtabley
 1062: \def\Evtable{\endgraf\endgroup\afterenvbreak}%
 1063: \let\Etable=\relax}}
 1064: 
 1065: \def\dontindex #1{}
 1066: \def\fnitemindex #1{\doind {fn}{\code{#1}}}%
 1067: \def\vritemindex #1{\doind {vr}{\code{#1}}}%
 1068: 
 1069: {\obeyspaces %
 1070: \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
 1071: \tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
 1072: 
 1073: \def\tablez #1#2#3#4#5#6{%
 1074: \aboveenvbreak %
 1075: \begingroup %
 1076: \def\Edescription{\Etable}% Neccessary kludge.
 1077: \let\itemindex=#1%
 1078: \ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
 1079: \ifnum 0#4>0 \tableindent=#4\mil \fi %
 1080: \ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
 1081: \def\itemfont{#2}%
 1082: \itemmax=\tableindent %
 1083: \advance \itemmax by -\itemmargin %
 1084: \advance \leftskip by \tableindent %
 1085: \exdentamount=\tableindent
 1086: \parindent = 0pt
 1087: \parskip = \smallskipamount
 1088: \ifdim \parskip=0pt \parskip=2pt \fi%
 1089: \def\Etable{\endgraf\endgroup\afterenvbreak}%
 1090: \let\item = \internalBitem %
 1091: \let\itemx = \internalBitemx %
 1092: \let\kitem = \internalBkitem %
 1093: \let\kitemx = \internalBkitemx %
 1094: \let\xitem = \internalBxitem %
 1095: \let\xitemx = \internalBxitemx %
 1096: }
 1097: 
 1098: % This is the counter used by @enumerate, which is really @itemize
 1099: 
 1100: \newcount \itemno
 1101: 
 1102: \def\itemize{\parsearg\itemizezzz}
 1103: 
 1104: \def\itemizezzz #1{%
 1105:   \begingroup % ended by the @end itemsize
 1106:   \itemizey {#1}{\Eitemize}
 1107: }
 1108: 
 1109: \def\itemizey #1#2{%
 1110: \aboveenvbreak %
 1111: \itemmax=\itemindent %
 1112: \advance \itemmax by -\itemmargin %
 1113: \advance \leftskip by \itemindent %
 1114: \exdentamount=\itemindent
 1115: \parindent = 0pt %
 1116: \parskip = \smallskipamount %
 1117: \ifdim \parskip=0pt \parskip=2pt \fi%
 1118: \def#2{\endgraf\endgroup\afterenvbreak}%
 1119: \def\itemcontents{#1}%
 1120: \let\item=\itemizeitem}
 1121: 
 1122: \def\bullet{$\ptexbullet$}
 1123: \def\minus{$-$}
 1124: 
 1125: % Set sfcode to normal for the chars that usually have another value.
 1126: % These are `.?!:;,'
 1127: \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
 1128:   \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
 1129: 
 1130: % \splitoff TOKENS\endmark defines \first to be the first token in
 1131: % TOKENS, and \rest to be the remainder.
 1132: % 
 1133: \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
 1134: 
 1135: % Allow an optional argument of an uppercase letter, lowercase letter,
 1136: % or number, to specify the first label in the enumerated list.  No
 1137: % argument is the same as `1'.
 1138: % 
 1139: \def\enumerate{\parsearg\enumeratezzz}
 1140: \def\enumeratezzz #1{\enumeratey #1  \endenumeratey}
 1141: \def\enumeratey #1 #2\endenumeratey{%
 1142:   \begingroup % ended by the @end enumerate
 1143:   %
 1144:   % If we were given no argument, pretend we were given `1'.
 1145:   \def\thearg{#1}%
 1146:   \ifx\thearg\empty \def\thearg{1}\fi
 1147:   %
 1148:   % Detect if the argument is a single token.  If so, it might be a
 1149:   % letter.  Otherwise, the only valid thing it can be is a number.
 1150:   % (We will always have one token, because of the test we just made.
 1151:   % This is a good thing, since \splitoff doesn't work given nothing at
 1152:   % all -- the first parameter is undelimited.)
 1153:   \expandafter\splitoff\thearg\endmark
 1154:   \ifx\rest\empty
 1155:     % Only one token in the argument.  It could still be anything.
 1156:     % A ``lowercase letter'' is one whose \lccode is nonzero.
 1157:     % An ``uppercase letter'' is one whose \lccode is both nonzero, and
 1158:     %   not equal to itself.
 1159:     % Otherwise, we assume it's a number.
 1160:     % 
 1161:     % We need the \relax at the end of the \ifnum lines to stop TeX from
 1162:     % continuing to look for a <number>.
 1163:     % 
 1164:     \ifnum\lccode\expandafter`\thearg=0\relax 
 1165:       \numericenumerate % a number (we hope)
 1166:     \else
 1167:       % It's a letter.
 1168:       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
 1169:         \lowercaseenumerate % lowercase letter
 1170:       \else
 1171:         \uppercaseenumerate % uppercase letter
 1172:       \fi
 1173:     \fi
 1174:   \else
 1175:     % Multiple tokens in the argument.  We hope it's a number.
 1176:     \numericenumerate
 1177:   \fi
 1178: }
 1179: 
 1180: % An @enumerate whose labels are integers.  The starting integer is
 1181: % given in \thearg.
 1182: % 
 1183: \def\numericenumerate{%
 1184:   \itemno = \thearg
 1185:   \startenumeration{\the\itemno}%
 1186: }
 1187: 
 1188: % The starting (lowercase) letter is in \thearg.
 1189: \def\lowercaseenumerate{%
 1190:   \itemno = \expandafter`\thearg
 1191:   \startenumeration{%
 1192:     % Be sure we're not beyond the end of the alphabet.
 1193:     \ifnum\itemno=0
 1194:       \errmessage{No more lowercase letters in @enumerate; get a bigger
 1195:                   alphabet}%
 1196:     \fi
 1197:     \char\lccode\itemno
 1198:   }%
 1199: }
 1200: 
 1201: % The starting (uppercase) letter is in \thearg.
 1202: \def\uppercaseenumerate{%
 1203:   \itemno = \expandafter`\thearg
 1204:   \startenumeration{%
 1205:     % Be sure we're not beyond the end of the alphabet.
 1206:     \ifnum\itemno=0
 1207:       \errmessage{No more uppercase letters in @enumerate; get a bigger
 1208:                   alphabet}
 1209:     \fi
 1210:     \char\uccode\itemno
 1211:   }%
 1212: }
 1213: 
 1214: % Call itemizey, adding a period to the first argument and supplying the
 1215: % common last two arguments.  Also subtract one from the initial value in
 1216: % \itemno, since @item increments \itemno.
 1217: % 
 1218: \def\startenumeration#1{%
 1219:   \advance\itemno by -1
 1220:   \itemizey{#1.}\Eenumerate\flushcr
 1221: }
 1222: 
 1223: % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
 1224: % to @enumerate.
 1225: % 
 1226: \def\alphaenumerate{\enumerate{a}}
 1227: \def\capsenumerate{\enumerate{A}}
 1228: \def\Ealphaenumerate{\Eenumerate}
 1229: \def\Ecapsenumerate{\Eenumerate}
 1230: 
 1231: % Definition of @item while inside @itemize.
 1232: 
 1233: \def\itemizeitem{%
 1234: \advance\itemno by 1
 1235: {\let\par=\endgraf \smallbreak}%
 1236: \ifhmode \errmessage{\in hmode at itemizeitem}\fi
 1237: {\parskip=0in \hskip 0pt
 1238: \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
 1239: \vadjust{\penalty 1200}}%
 1240: \flushcr}
 1241: 
 1242: \message{indexing,}
 1243: % Index generation facilities
 1244: 
 1245: % Define \newwrite to be identical to plain tex's \newwrite
 1246: % except not \outer, so it can be used within \newindex.
 1247: {\catcode`\@=11
 1248: \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
 1249: 
 1250: % \newindex {foo} defines an index named foo.
 1251: % It automatically defines \fooindex such that
 1252: % \fooindex ...rest of line... puts an entry in the index foo.
 1253: % It also defines \fooindfile to be the number of the output channel for
 1254: % the file that	accumulates this index.  The file's extension is foo.
 1255: % The name of an index should be no more than 2 characters long
 1256: % for the sake of vms.
 1257: 
 1258: \def\newindex #1{
 1259: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
 1260: \openout \csname#1indfile\endcsname \jobname.#1	% Open the file
 1261: \expandafter\xdef\csname#1index\endcsname{%	% Define \xxxindex
 1262: \noexpand\doindex {#1}}
 1263: }
 1264: 
 1265: % @defindex foo  ==  \newindex{foo}
 1266: 
 1267: \def\defindex{\parsearg\newindex}
 1268: 
 1269: % Define @defcodeindex, like @defindex except put all entries in @code.
 1270: 
 1271: \def\newcodeindex #1{
 1272: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
 1273: \openout \csname#1indfile\endcsname \jobname.#1	% Open the file
 1274: \expandafter\xdef\csname#1index\endcsname{%	% Define \xxxindex
 1275: \noexpand\docodeindex {#1}}
 1276: }
 1277: 
 1278: \def\defcodeindex{\parsearg\newcodeindex}
 1279: 
 1280: % @synindex foo bar    makes index foo feed into index bar.
 1281: % Do this instead of @defindex foo if you don't want it as a separate index.
 1282: \def\synindex #1 #2 {%
 1283: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
 1284: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
 1285: \expandafter\xdef\csname#1index\endcsname{%	% Define \xxxindex
 1286: \noexpand\doindex {#2}}%
 1287: }
 1288: 
 1289: % @syncodeindex foo bar   similar, but put all entries made for index foo
 1290: % inside @code.
 1291: \def\syncodeindex #1 #2 {%
 1292: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
 1293: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
 1294: \expandafter\xdef\csname#1index\endcsname{%	% Define \xxxindex
 1295: \noexpand\docodeindex {#2}}%
 1296: }
 1297: 
 1298: % Define \doindex, the driver for all \fooindex macros.
 1299: % Argument #1 is generated by the calling \fooindex macro,
 1300: %  and it is "foo", the name of the index.
 1301: 
 1302: % \doindex just uses \parsearg; it calls \doind for the actual work.
 1303: % This is because \doind is more useful to call from other macros.
 1304: 
 1305: % There is also \dosubind {index}{topic}{subtopic}
 1306: % which makes an entry in a two-level index such as the operation index.
 1307: 
 1308: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
 1309: \def\singleindexer #1{\doind{\indexname}{#1}}
 1310: 
 1311: % like the previous two, but they put @code around the argument.
 1312: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
 1313: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
 1314: 
 1315: \def\indexdummies{%
 1316: \def\_{{\realbackslash _}}%
 1317: \def\w{\realbackslash w }%
 1318: \def\bf{\realbackslash bf }%
 1319: \def\rm{\realbackslash rm }%
 1320: \def\sl{\realbackslash sl }%
 1321: \def\sf{\realbackslash sf}%
 1322: \def\tt{\realbackslash tt}%
 1323: \def\gtr{\realbackslash gtr}%
 1324: \def\less{\realbackslash less}%
 1325: \def\hat{\realbackslash hat}%
 1326: \def\char{\realbackslash char}%
 1327: \def\TeX{\realbackslash TeX}%
 1328: \def\dots{\realbackslash dots }%
 1329: \def\copyright{\realbackslash copyright }%
 1330: \def\tclose##1{\realbackslash tclose {##1}}%
 1331: \def\code##1{\realbackslash code {##1}}%
 1332: \def\samp##1{\realbackslash samp {##1}}%
 1333: \def\t##1{\realbackslash r {##1}}%
 1334: \def\r##1{\realbackslash r {##1}}%
 1335: \def\i##1{\realbackslash i {##1}}%
 1336: \def\b##1{\realbackslash b {##1}}%
 1337: \def\cite##1{\realbackslash cite {##1}}%
 1338: \def\key##1{\realbackslash key {##1}}%
 1339: \def\file##1{\realbackslash file {##1}}%
 1340: \def\var##1{\realbackslash var {##1}}%
 1341: \def\kbd##1{\realbackslash kbd {##1}}%
 1342: }
 1343: 
 1344: % \indexnofonts no-ops all font-change commands.
 1345: % This is used when outputting the strings to sort the index by.
 1346: \def\indexdummyfont#1{#1}
 1347: \def\indexdummytex{TeX}
 1348: \def\indexdummydots{...}
 1349: 
 1350: \def\indexnofonts{%
 1351: \let\w=\indexdummyfont
 1352: \let\t=\indexdummyfont
 1353: \let\r=\indexdummyfont
 1354: \let\i=\indexdummyfont
 1355: \let\b=\indexdummyfont
 1356: \let\emph=\indexdummyfont
 1357: \let\strong=\indexdummyfont
 1358: \let\cite=\indexdummyfont
 1359: \let\sc=\indexdummyfont
 1360: %Don't no-op \tt, since it isn't a user-level command
 1361: % and is used in the definitions of the active chars like <, >, |...
 1362: %\let\tt=\indexdummyfont
 1363: \let\tclose=\indexdummyfont
 1364: \let\code=\indexdummyfont
 1365: \let\file=\indexdummyfont
 1366: \let\samp=\indexdummyfont
 1367: \let\kbd=\indexdummyfont
 1368: \let\key=\indexdummyfont
 1369: \let\var=\indexdummyfont
 1370: \let\TeX=\indexdummytex
 1371: \let\dots=\indexdummydots
 1372: }
 1373: 
 1374: % To define \realbackslash, we must make \ not be an escape.
 1375: % We must first make another character (@) an escape
 1376: % so we do not become unable to do a definition.
 1377: 
 1378: {\catcode`\@=0 \catcode`\\=\other
 1379: @gdef@realbackslash{\}}
 1380: 
 1381: \let\indexbackslash=0  %overridden during \printindex.
 1382: 
 1383: \def\doind #1#2{%
 1384: {\count10=\lastpenalty %
 1385: {\indexdummies % Must do this here, since \bf, etc expand at this stage
 1386: \escapechar=`\\%
 1387: {\let\folio=0% Expand all macros now EXCEPT \folio
 1388: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
 1389: % so it will be output as is; and it will print as backslash in the indx.
 1390: %
 1391: % Now process the index-string once, with all font commands turned off,
 1392: % to get the string to sort the index by.
 1393: {\indexnofonts
 1394: \xdef\temp1{#2}%
 1395: }%
 1396: % Now produce the complete index entry.  We process the index-string again,
 1397: % this time with font commands expanded, to get what to print in the index.
 1398: \edef\temp{%
 1399: \write \csname#1indfile\endcsname{%
 1400: \realbackslash entry {\temp1}{\folio}{#2}}}%
 1401: \temp }%
 1402: }\penalty\count10}}
 1403: 
 1404: \def\dosubind #1#2#3{%
 1405: {\count10=\lastpenalty %
 1406: {\indexdummies % Must do this here, since \bf, etc expand at this stage
 1407: \escapechar=`\\%
 1408: {\let\folio=0%
 1409: \def\rawbackslashxx{\indexbackslash}%
 1410: %
 1411: % Now process the index-string once, with all font commands turned off,
 1412: % to get the string to sort the index by.
 1413: {\indexnofonts
 1414: \xdef\temp1{#2 #3}%
 1415: }%
 1416: % Now produce the complete index entry.  We process the index-string again,
 1417: % this time with font commands expanded, to get what to print in the index.
 1418: \edef\temp{%
 1419: \write \csname#1indfile\endcsname{%
 1420: \realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
 1421: \temp }%
 1422: }\penalty\count10}}
 1423: 
 1424: % The index entry written in the file actually looks like
 1425: %  \entry {sortstring}{page}{topic}
 1426: % or
 1427: %  \entry {sortstring}{page}{topic}{subtopic}
 1428: % The texindex program reads in these files and writes files
 1429: % containing these kinds of lines:
 1430: %  \initial {c}
 1431: %     before the first topic whose initial is c
 1432: %  \entry {topic}{pagelist}
 1433: %     for a topic that is used without subtopics
 1434: %  \primary {topic}
 1435: %     for the beginning of a topic that is used with subtopics
 1436: %  \secondary {subtopic}{pagelist}
 1437: %     for each subtopic.
 1438: 
 1439: % Define the user-accessible indexing commands 
 1440: % @findex, @vindex, @kindex, @cindex.
 1441: 
 1442: \def\findex {\fnindex}
 1443: \def\kindex {\kyindex}
 1444: \def\cindex {\cpindex}
 1445: \def\vindex {\vrindex}
 1446: \def\tindex {\tpindex}
 1447: \def\pindex {\pgindex}
 1448: 
 1449: \def\cindexsub {\begingroup\obeylines\cindexsub}
 1450: {\obeylines %
 1451: \gdef\cindexsub "#1" #2^^M{\endgroup %
 1452: \dosubind{cp}{#2}{#1}}}
 1453: 
 1454: % Define the macros used in formatting output of the sorted index material.
 1455: 
 1456: % This is what you call to cause a particular index to get printed.
 1457: % Write
 1458: % @unnumbered Function Index
 1459: % @printindex fn
 1460: 
 1461: \def\printindex{\parsearg\doprintindex}
 1462: 
 1463: \def\doprintindex#1{%
 1464:   \tex
 1465:   \dobreak \chapheadingskip {10000}
 1466:   \catcode`\%=\other\catcode`\&=\other\catcode`\#=\other
 1467:   \catcode`\$=\other\catcode`\_=\other
 1468:   \catcode`\~=\other
 1469:   %
 1470:   % The following don't help, since the chars were translated
 1471:   % when the raw index was written, and their fonts were discarded
 1472:   % due to \indexnofonts.
 1473:   %\catcode`\"=\active
 1474:   %\catcode`\^=\active
 1475:   %\catcode`\_=\active
 1476:   %\catcode`\|=\active
 1477:   %\catcode`\<=\active
 1478:   %\catcode`\>=\active
 1479:   % %
 1480:   \def\indexbackslash{\rawbackslashxx}
 1481:   \indexfonts\rm \tolerance=9500 \advance\baselineskip -1pt
 1482:   \begindoublecolumns
 1483:   %
 1484:   % See if the index file exists and is nonempty.
 1485:   \openin 1 \jobname.#1s
 1486:   \ifeof 1 
 1487:     % \enddoublecolumns gets confused if there is no text in the index,
 1488:     % and it loses the chapter title and the aux file entries for the
 1489:     % index.  The easiest way to prevent this problem is to make sure
 1490:     % there is some text.
 1491:     (Index is nonexistent)
 1492:     \else
 1493:     %
 1494:     % If the index file exists but is empty, then \openin leaves \ifeof
 1495:     % false.  We have to make TeX try to read something from the file, so
 1496:     % it can discover if there is anything in it.
 1497:     \read 1 to \temp
 1498:     \ifeof 1
 1499:       (Index is empty)
 1500:     \else
 1501:       \input \jobname.#1s
 1502:     \fi
 1503:   \fi
 1504:   \closein 1
 1505:   \enddoublecolumns
 1506:   \Etex
 1507: }
 1508: 
 1509: % These macros are used by the sorted index file itself.
 1510: % Change them to control the appearance of the index.
 1511: 
 1512: % Same as \bigskipamount except no shrink.
 1513: % \balancecolumns gets confused if there is any shrink.
 1514: \newskip\initialskipamount \initialskipamount 12pt plus4pt
 1515: 
 1516: \def\initial #1{%
 1517: {\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
 1518: \ifdim\lastskip<\initialskipamount
 1519: \removelastskip \penalty-200 \vskip \initialskipamount\fi
 1520: \line{\secbf#1\hfill}\kern 2pt\penalty10000}}
 1521: 
 1522: \def\entry #1#2{\begingroup
 1523:   \parfillskip=0in \parskip=0in \parindent=0in
 1524:   %
 1525:   % \hangindent is only relevant when the page number and the entry text
 1526:   % don't fit on one line.  In that case, bob suggests starting the dots
 1527:   % pretty far over on the line.
 1528:   % \hangafter is reset to 1 at the start of each paragraph.
 1529:   \hangindent=.75\hsize
 1530:   \noindent
 1531:   %
 1532:   % Don't break the text of the index entry.
 1533:   \hbox{#1}%
 1534:   %
 1535:   % If we must, put the page number on a line of its own, and fill out
 1536:   % this line with blank space.  (The \hfil is overwhelmed with the
 1537:   % fill leaders glue in \indexdotfill if the page number does fit.)
 1538:   \hfil\penalty50
 1539:   \null\nobreak\indexdotfill % Have leaders before the page number.
 1540:   %
 1541:   % The `\ ' here is removed by the implicit \unskip that TeX does as
 1542:   % part of (the primitive) \par.  Without, a spurious underfull \hbox ensues.
 1543:   \ #2% The page number ends the paragraph.
 1544:   \par
 1545: \endgroup}
 1546: 
 1547: % Like \dotfill except takes at least 1 em.
 1548: \def\indexdotfill{\cleaders
 1549:   \hbox{$\mathsurround=0pt \mkern1.5mu . \mkern1.5mu$}\hskip 1em plus 1fill}
 1550: 
 1551: \def\primary #1{\line{#1\hfil}}
 1552: 
 1553: \newskip\secondaryindent \secondaryindent=0.5cm
 1554: 
 1555: \def\secondary #1#2{
 1556: {\parfillskip=0in \parskip=0in
 1557: \hangindent =1in \hangafter=1
 1558: \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
 1559: }}
 1560: 
 1561: %% Define two-column mode, which is used in indexes.
 1562: %% Adapted from the TeXBook, page 416
 1563: \catcode `\@=11
 1564: 
 1565: \newbox\partialpage
 1566: 
 1567: \newdimen\doublecolumnhsize  \doublecolumnhsize = 3.11in
 1568: \newdimen\doublecolumnvsize  \doublecolumnvsize = 19.1in
 1569: \newdimen\availdimen@
 1570: 
 1571: \def\begindoublecolumns{\begingroup
 1572:   \output={\global\setbox\partialpage=
 1573:     \vbox{\unvbox255\kern -\topskip \kern \baselineskip}}\eject
 1574:   \output={\doublecolumnout}%
 1575:   \hsize=\doublecolumnhsize \vsize=\doublecolumnvsize}
 1576: \def\enddoublecolumns{\output={\balancecolumns}\eject
 1577:   \endgroup \pagegoal=\vsize}
 1578: 
 1579: \def\doublecolumnout{\splittopskip=\topskip \splitmaxdepth=\maxdepth
 1580:   \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
 1581:   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
 1582:   \onepageout\pagesofar \unvbox255 \penalty\outputpenalty}
 1583: \def\pagesofar{\unvbox\partialpage %
 1584:   \hsize=\doublecolumnhsize % have to restore this since output routine
 1585: %	      changes it to set cropmarks (P. A. MacKay, 12 Nov. 1986)
 1586:   \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
 1587: \def\balancecolumns{%
 1588: % Unset the glue.
 1589:   \setbox255=\vbox{\unvbox255}
 1590:   \dimen@=\ht255
 1591:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
 1592:   \divide\dimen@ by2
 1593:   \availdimen@=\pageheight \advance\availdimen@ by-\ht\partialpage
 1594: % If the remaining data is too big for one page,
 1595: % output one page normally, then work with what remains.
 1596:   \ifdim \dimen@>\availdimen@
 1597:    {
 1598:      \splittopskip=\topskip \splitmaxdepth=\maxdepth
 1599:      \dimen@=\pageheight \advance\dimen@ by-\ht\partialpage
 1600:      \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@
 1601:      \onepageout\pagesofar
 1602:    }
 1603: % Recompute size of what remains, in case we just output some of it.
 1604:   \dimen@=\ht255
 1605:   \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
 1606:   \divide\dimen@ by2
 1607:   \fi
 1608:   \setbox0=\vbox{\unvbox255}
 1609:   \splittopskip=\topskip
 1610:   {\vbadness=10000 \loop \global\setbox3=\copy0
 1611:     \global\setbox1=\vsplit3 to\dimen@
 1612:     \ifdim\ht3>\dimen@ \global\advance\dimen@ by1pt \repeat}
 1613:   \setbox0=\vbox to\dimen@{\unvbox1}  \setbox2=\vbox to\dimen@{\unvbox3}
 1614:   \pagesofar}
 1615: 
 1616: \catcode `\@=\other
 1617: \message{sectioning,}
 1618: % Define chapters, sections, etc.
 1619: 
 1620: \newcount \chapno
 1621: \newcount \secno        \secno=0
 1622: \newcount \subsecno     \subsecno=0
 1623: \newcount \subsubsecno  \subsubsecno=0
 1624: 
 1625: % This counter is funny since it counts through charcodes of letters A, B, ...
 1626: \newcount \appendixno  \appendixno = `\@
 1627: \def\appendixletter{\char\the\appendixno}
 1628: 
 1629: \newwrite \contentsfile
 1630: % This is called from \setfilename.
 1631: \def\opencontents{\openout \contentsfile = \jobname.toc}
 1632: 
 1633: % Each @chapter defines this as the name of the chapter.
 1634: % page headings and footings can use it.  @section does likewise
 1635: 
 1636: \def\thischapter{} \def\thissection{}
 1637: \def\seccheck#1{\if \pageno<0 %
 1638: \errmessage{@#1 not allowed after generating table of contents}\fi
 1639: %
 1640: }
 1641: 
 1642: \def\chapternofonts{%
 1643: \let\rawbackslash=\relax%
 1644: \let\frenchspacing=\relax%
 1645: \def\result{\realbackslash result}
 1646: \def\equiv{\realbackslash equiv}
 1647: \def\expansion{\realbackslash expansion}
 1648: \def\print{\realbackslash print}
 1649: \def\TeX{\realbackslash TeX}
 1650: \def\dots{\realbackslash dots}
 1651: \def\copyright{\realbackslash copyright}
 1652: \def\tt{\realbackslash tt}
 1653: \def\bf{\realbackslash bf }
 1654: \def\w{\realbackslash w}
 1655: \def\less{\realbackslash less}
 1656: \def\gtr{\realbackslash gtr}
 1657: \def\hat{\realbackslash hat}
 1658: \def\char{\realbackslash char}
 1659: \def\tclose##1{\realbackslash tclose {##1}}
 1660: \def\code##1{\realbackslash code {##1}}
 1661: \def\samp##1{\realbackslash samp {##1}}
 1662: \def\r##1{\realbackslash r {##1}}
 1663: \def\b##1{\realbackslash b {##1}}
 1664: \def\key##1{\realbackslash key {##1}}
 1665: \def\file##1{\realbackslash file {##1}}
 1666: \def\kbd##1{\realbackslash kbd {##1}}
 1667: % These are redefined because @smartitalic wouldn't work inside xdef.
 1668: \def\i##1{\realbackslash i {##1}}
 1669: \def\cite##1{\realbackslash cite {##1}}
 1670: \def\var##1{\realbackslash var {##1}}
 1671: \def\emph##1{\realbackslash emph {##1}}
 1672: \def\dfn##1{\realbackslash dfn {##1}}
 1673: }
 1674: 
 1675: \def\thischaptername{No Chapter Title}
 1676: \outer\def\chapter{\parsearg\chapterzzz}
 1677: \def\chapterzzz #1{\seccheck{chapter}%
 1678: \secno=0 \subsecno=0 \subsubsecno=0
 1679: \global\advance \chapno by 1 \message{Chapter \the\chapno}%
 1680: \chapmacro {#1}{\the\chapno}%
 1681: \gdef\thissection{#1}%
 1682: \gdef\thischaptername{#1}%
 1683: % We don't substitute the actual chapter name into \thischapter
 1684: % because we don't want its macros evaluated now.
 1685: \xdef\thischapter{Chapter \the\chapno: \noexpand\thischaptername}%
 1686: {\chapternofonts%
 1687: \edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
 1688: \escapechar=`\\%
 1689: \write \contentsfile \temp  %
 1690: \donoderef %
 1691: \global\let\section = \numberedsec
 1692: \global\let\subsection = \numberedsubsec
 1693: \global\let\subsubsection = \numberedsubsubsec
 1694: }}
 1695: 
 1696: \outer\def\appendix{\parsearg\appendixzzz}
 1697: \def\appendixzzz #1{\seccheck{appendix}%
 1698: \secno=0 \subsecno=0 \subsubsecno=0
 1699: \global\advance \appendixno by 1 \message{Appendix \appendixletter}%
 1700: \chapmacro {#1}{Appendix \appendixletter}%
 1701: \gdef\thissection{#1}%
 1702: \gdef\thischaptername{#1}%
 1703: \xdef\thischapter{Appendix \appendixletter: \noexpand\thischaptername}%
 1704: {\chapternofonts%
 1705: \edef\temp{{\realbackslash chapentry 
 1706:   {#1}{Appendix \appendixletter}{\noexpand\folio}}}%
 1707: \escapechar=`\\%
 1708: \write \contentsfile \temp  %
 1709: \appendixnoderef %
 1710: \global\let\section = \appendixsec
 1711: \global\let\subsection = \appendixsubsec
 1712: \global\let\subsubsection = \appendixsubsubsec
 1713: }}
 1714: 
 1715: \outer\def\top{\parsearg\unnumberedzzz}
 1716: \outer\def\unnumbered{\parsearg\unnumberedzzz}
 1717: \def\unnumberedzzz #1{\seccheck{unnumbered}%
 1718: \secno=0 \subsecno=0 \subsubsecno=0 \message{(#1)}
 1719: \unnumbchapmacro {#1}%
 1720: \gdef\thischapter{#1}\gdef\thissection{#1}%
 1721: {\chapternofonts%
 1722: \edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
 1723: \escapechar=`\\%
 1724: \write \contentsfile \temp  %
 1725: \unnumbnoderef %
 1726: \global\let\section = \unnumberedsec
 1727: \global\let\subsection = \unnumberedsubsec
 1728: \global\let\subsubsection = \unnumberedsubsubsec
 1729: }}
 1730: 
 1731: \outer\def\numberedsec{\parsearg\seczzz}
 1732: \def\seczzz #1{\seccheck{section}%
 1733: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
 1734: \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
 1735: {\chapternofonts%
 1736: \edef\temp{{\realbackslash secentry %
 1737: {#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
 1738: \escapechar=`\\%
 1739: \write \contentsfile \temp %
 1740: \donoderef %
 1741: \penalty 10000 %
 1742: }}
 1743: 
 1744: \outer\def\appendixsection{\parsearg\appendixsectionzzz}
 1745: \outer\def\appendixsec{\parsearg\appendixsectionzzz}
 1746: \def\appendixsectionzzz #1{\seccheck{appendixsection}%
 1747: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
 1748: \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
 1749: {\chapternofonts%
 1750: \edef\temp{{\realbackslash secentry %
 1751: {#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
 1752: \escapechar=`\\%
 1753: \write \contentsfile \temp %
 1754: \appendixnoderef %
 1755: \penalty 10000 %
 1756: }}
 1757: 
 1758: \outer\def\unnumberedsec{\parsearg\unnumberedseczzz}
 1759: \def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
 1760: \plainsecheading {#1}\gdef\thissection{#1}%
 1761: {\chapternofonts%
 1762: \edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
 1763: \escapechar=`\\%
 1764: \write \contentsfile \temp %
 1765: \unnumbnoderef %
 1766: \penalty 10000 %
 1767: }}
 1768: 
 1769: \outer\def\numberedsubsec{\parsearg\numberedsubseczzz}
 1770: \def\numberedsubseczzz #1{\seccheck{subsection}%
 1771: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
 1772: \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
 1773: {\chapternofonts%
 1774: \edef\temp{{\realbackslash subsecentry %
 1775: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
 1776: \escapechar=`\\%
 1777: \write \contentsfile \temp %
 1778: \donoderef %
 1779: \penalty 10000 %
 1780: }}
 1781: 
 1782: \outer\def\appendixsubsec{\parsearg\appendixsubseczzz}
 1783: \def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
 1784: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
 1785: \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
 1786: {\chapternofonts%
 1787: \edef\temp{{\realbackslash subsecentry %
 1788: {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
 1789: \escapechar=`\\%
 1790: \write \contentsfile \temp %
 1791: \appendixnoderef %
 1792: \penalty 10000 %
 1793: }}
 1794: 
 1795: \outer\def\unnumberedsubsec{\parsearg\unnumberedsubseczzz}
 1796: \def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
 1797: \plainsecheading {#1}\gdef\thissection{#1}%
 1798: {\chapternofonts%
 1799: \edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
 1800: \escapechar=`\\%
 1801: \write \contentsfile \temp %
 1802: \unnumbnoderef %
 1803: \penalty 10000 %
 1804: }}
 1805: 
 1806: \outer\def\numberedsubsubsec{\parsearg\numberedsubsubseczzz}
 1807: \def\numberedsubsubseczzz #1{\seccheck{subsubsection}%
 1808: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
 1809: \subsubsecheading {#1}
 1810:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
 1811: {\chapternofonts%
 1812: \edef\temp{{\realbackslash subsubsecentry %
 1813:   {#1}
 1814:   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}
 1815:   {\noexpand\folio}}}%
 1816: \escapechar=`\\%
 1817: \write \contentsfile \temp %
 1818: \donoderef %
 1819: \penalty 10000 %
 1820: }}
 1821: 
 1822: \outer\def\appendixsubsubsec{\parsearg\appendixsubsubseczzz}
 1823: \def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
 1824: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
 1825: \subsubsecheading {#1}
 1826:   {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
 1827: {\chapternofonts%
 1828: \edef\temp{{\realbackslash subsubsecentry{#1}%
 1829:   {\appendixletter}
 1830:   {\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%
 1831: \escapechar=`\\%
 1832: \write \contentsfile \temp %
 1833: \appendixnoderef %
 1834: \penalty 10000 %
 1835: }}
 1836: 
 1837: \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
 1838: \def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
 1839: \plainsecheading {#1}\gdef\thissection{#1}%
 1840: {\chapternofonts%
 1841: \edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
 1842: \escapechar=`\\%
 1843: \write \contentsfile \temp %
 1844: \unnumbnoderef %
 1845: \penalty 10000 %
 1846: }}
 1847: 
 1848: % These are variants which are not "outer", so they can appear in @ifinfo.
 1849: % Actually, they should now be obsolete; ordinary section commands should work.
 1850: \def\infotop{\parsearg\unnumberedzzz}
 1851: \def\infounnumbered{\parsearg\unnumberedzzz}
 1852: \def\infounnumberedsec{\parsearg\unnumberedseczzz}
 1853: \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
 1854: \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
 1855: 
 1856: \def\infoappendix{\parsearg\appendixzzz}
 1857: \def\infoappendixsec{\parsearg\appendixseczzz}
 1858: \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
 1859: \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
 1860: 
 1861: \def\infochapter{\parsearg\chapterzzz}
 1862: \def\infosection{\parsearg\sectionzzz}
 1863: \def\infosubsection{\parsearg\subsectionzzz}
 1864: \def\infosubsubsection{\parsearg\subsubsectionzzz}
 1865: 
 1866: % These macros control what the section commands do, according
 1867: % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
 1868: % Define them by default for a numbered chapter.
 1869: \global\let\section = \numberedsec
 1870: \global\let\subsection = \numberedsubsec
 1871: \global\let\subsubsection = \numberedsubsubsec
 1872: 
 1873: % Define @majorheading, @heading and @subheading
 1874: 
 1875: % NOTE on use of \vbox for chapter headings, section headings, and
 1876: % such:
 1877: %	1) We use \vbox rather than the earlier \line to permit
 1878: %	   overlong headings to fold.
 1879: %	2) \hyphenpenalty is set to 10000 because hyphenation in a
 1880: %	   heading is obnoxious; this forbids it.
 1881: %       3) Likewise, headings look best if no \parindent is used, and
 1882: %          if justification is not attempted.  Hence \raggedright.
 1883: 
 1884: 
 1885: \def\majorheading{\parsearg\majorheadingzzz}
 1886: \def\majorheadingzzz #1{%
 1887: {\advance\chapheadingskip by 10pt \chapbreak }%
 1888: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1889:                   \parindent=0pt\raggedright
 1890:                   \rm #1\hfill}}\bigskip \par\penalty 200}
 1891: 
 1892: \def\chapheading{\parsearg\chapheadingzzz}
 1893: \def\chapheadingzzz #1{\chapbreak %
 1894: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1895:                   \parindent=0pt\raggedright
 1896:                   \rm #1\hfill}}\bigskip \par\penalty 200}
 1897: 
 1898: \def\heading{\parsearg\secheadingi}
 1899: 
 1900: \def\subheading{\parsearg\subsecheadingi}
 1901: 
 1902: \def\subsubheading{\parsearg\subsubsecheadingi}
 1903: 
 1904: % These macros generate a chapter, section, etc. heading only
 1905: % (including whitespace, linebreaking, etc. around it),
 1906: % given all the information in convenient, parsed form.
 1907: 
 1908: %%% Args are the skip and penalty (usually negative)
 1909: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
 1910: 
 1911: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
 1912: 
 1913: %%% Define plain chapter starts, and page on/off switching for it
 1914: % Parameter controlling skip before chapter headings (if needed)
 1915: 
 1916: \newskip \chapheadingskip \chapheadingskip = 30pt plus 8pt minus 4pt
 1917: 
 1918: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
 1919: \def\chappager{\par\vfill\supereject}
 1920: \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
 1921: 
 1922: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
 1923: 
 1924: \def\CHAPPAGoff{
 1925: \global\let\pchapsepmacro=\chapbreak
 1926: \global\let\pagealignmacro=\chappager}
 1927: 
 1928: \def\CHAPPAGon{
 1929: \global\let\pchapsepmacro=\chappager
 1930: \global\let\pagealignmacro=\chappager
 1931: \global\def\HEADINGSon{\HEADINGSsingle}}
 1932: 
 1933: \def\CHAPPAGodd{
 1934: \global\let\pchapsepmacro=\chapoddpage
 1935: \global\let\pagealignmacro=\chapoddpage
 1936: \global\def\HEADINGSon{\HEADINGSdouble}}
 1937: 
 1938: \CHAPPAGon
 1939: 
 1940: \def\CHAPFplain{
 1941: \global\let\chapmacro=\chfplain
 1942: \global\let\unnumbchapmacro=\unnchfplain}
 1943: 
 1944: \def\chfplain #1#2{%
 1945:   \pchapsepmacro
 1946:   {%
 1947:     \chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1948:                      \parindent=0pt\raggedright
 1949:                      \rm #2\enspace #1}%
 1950:   }%
 1951:   \bigskip
 1952:   \penalty5000
 1953: }
 1954: 
 1955: \def\unnchfplain #1{%
 1956: \pchapsepmacro %
 1957: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1958:                   \parindent=0pt\raggedright
 1959:                   \rm #1\hfill}}\bigskip \par\penalty 10000 %
 1960: }
 1961: \CHAPFplain % The default
 1962: 
 1963: \def\unnchfopen #1{%
 1964: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1965:                        \parindent=0pt\raggedright
 1966:                        \rm #1\hfill}}\bigskip \par\penalty 10000 %
 1967: }
 1968: 
 1969: \def\chfopen #1#2{\chapoddpage {\chapfonts
 1970: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
 1971: \par\penalty 5000 %
 1972: }
 1973: 
 1974: \def\CHAPFopen{
 1975: \global\let\chapmacro=\chfopen
 1976: \global\let\unnumbchapmacro=\unnchfopen}
 1977: 
 1978: % Parameter controlling skip before section headings.
 1979: 
 1980: \newskip \subsecheadingskip  \subsecheadingskip = 17pt plus 8pt minus 4pt
 1981: \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
 1982: 
 1983: \newskip \secheadingskip  \secheadingskip = 21pt plus 8pt minus 4pt
 1984: \def\secheadingbreak{\dobreak \secheadingskip {-1000}}
 1985: 
 1986: % @paragraphindent  is defined for the Info formatting commands only.
 1987: \let\paragraphindent=\comment
 1988: 
 1989: % Section fonts are the base font at magstep2, which produces
 1990: % a size a bit more than 14 points in the default situation.	
 1991: 
 1992: \def\secheading #1#2#3{\secheadingi {#2.#3\enspace #1}}
 1993: \def\plainsecheading #1{\secheadingi {#1}}
 1994: \def\secheadingi #1{{\advance \secheadingskip by \parskip %
 1995: \secheadingbreak}%
 1996: {\secfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 1997:                  \parindent=0pt\raggedright
 1998:                  \rm #1\hfill}}%
 1999: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
 2000: 
 2001: 
 2002: % Subsection fonts are the base font at magstep1, 
 2003: % which produces a size of 12 points.
 2004: 
 2005: \def\subsecheading #1#2#3#4{\subsecheadingi {#2.#3.#4\enspace #1}}
 2006: \def\subsecheadingi #1{{\advance \subsecheadingskip by \parskip %
 2007: \subsecheadingbreak}%
 2008: {\subsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 2009:                      \parindent=0pt\raggedright
 2010:                      \rm #1\hfill}}%
 2011: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
 2012: 
 2013: \def\subsubsecfonts{\subsecfonts} % Maybe this should change:
 2014: 				  % Perhaps make sssec fonts scaled
 2015: 				  % magstep half
 2016: \def\subsubsecheading #1#2#3#4#5{\subsubsecheadingi {#2.#3.#4.#5\enspace #1}}
 2017: \def\subsubsecheadingi #1{{\advance \subsecheadingskip by \parskip %
 2018: \subsecheadingbreak}%
 2019: {\subsubsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
 2020:                        \parindent=0pt\raggedright
 2021:                        \rm #1\hfill}}%
 2022: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000}
 2023: 
 2024: 
 2025: \message{toc printing,}
 2026: 
 2027: % Finish up the main text and prepare to read what we've written
 2028: % to \contentsfile.
 2029: 
 2030: \newskip\contentsrightmargin \contentsrightmargin=1in
 2031: \def\startcontents#1{%
 2032:    \ifnum \pageno>0
 2033:       \pageno = -1		% Request roman numbered pages.
 2034:    \fi
 2035:    \pagealignmacro
 2036:    \immediate\closeout \contentsfile
 2037:    % Don't need to put `Contents' or `Short Contents' in the headline. 
 2038:    % It is abundantly clear what they are.
 2039:    \unnumbchapmacro{#1}\def\thischapter{}%
 2040:    \begingroup   		% Set up to handle contents files properly.
 2041:       \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11
 2042:       \raggedbottom             % Worry more about breakpoints than the bottom.
 2043:       \advance\hsize by -\contentsrightmargin % Don't use the full line length.
 2044: }
 2045: 
 2046:   
 2047: % Normal (long) toc.
 2048: \outer\def\contents{%
 2049:    \startcontents{Table of Contents}%
 2050:       \input \jobname.toc
 2051:    \endgroup
 2052:    \vfill \eject
 2053: }
 2054: 
 2055: % And just the chapters.
 2056: \outer\def\summarycontents{%
 2057:    \startcontents{Short Contents}%
 2058:       %
 2059:       \let\chapentry = \shortchapentry
 2060:       \let\unnumbchapentry = \shortunnumberedentry
 2061:       % We want a true roman here for the page numbers.
 2062:       \secfonts
 2063:       \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
 2064:       \rm
 2065:       \advance\baselineskip by 1pt % Open it up a little.
 2066:       \def\secentry ##1##2##3##4{}
 2067:       \def\unnumbsecentry ##1##2{}
 2068:       \def\subsecentry ##1##2##3##4##5{}
 2069:       \def\unnumbsubsecentry ##1##2{}
 2070:       \def\subsubsecentry ##1##2##3##4##5##6{}
 2071:       \def\unnumbsubsubsecentry ##1##2{}
 2072:       \input \jobname.toc
 2073:    \endgroup
 2074:    \vfill \eject
 2075: }
 2076: \let\shortcontents = \summarycontents
 2077: 
 2078: % These macros generate individual entries in the table of contents.
 2079: % The first argument is the chapter or section name.
 2080: % The last argument is the page number.
 2081: % The arguments in between are the chapter number, section number, ...
 2082: 
 2083: % Chapter-level things, for both the long and short contents.
 2084: \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
 2085: 
 2086: % See comments in \dochapentry re vbox and related settings
 2087: \def\shortchapentry#1#2#3{%
 2088:    \vbox{\hyphenpenalty=10000\tolerance=5000
 2089:     \parindent=0pt\strut\raggedright
 2090:     {#2\labelspace #1}\dotfill\doshortpageno{#3}}%
 2091: }
 2092: 
 2093: \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
 2094: \def\shortunnumberedentry#1#2{%
 2095:    \vbox{\hyphenpenalty=10000\tolerance=5000
 2096:     \parindent=0pt\strut\raggedright
 2097:     #1\dotfill\doshortpageno{#2}}%
 2098: }
 2099: 
 2100: % Sections.
 2101: \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
 2102: \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
 2103: 
 2104: % Subsections.
 2105: \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
 2106: \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
 2107: 
 2108: % And subsubsections.
 2109: \def\subsubsecentry#1#2#3#4#5#6{%
 2110:   \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
 2111: \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
 2112: 
 2113: 
 2114: % This parameter controls the indentation of the various levels.
 2115: \newdimen\tocindent \tocindent = 3pc
 2116: 
 2117: % Now for the actual typesetting. In all these, #1 is the text and #2 is the 
 2118: % page number.
 2119: %
 2120: % If the toc has to be broken over pages, we would want to be at chapters 
 2121: % if at all possible; hence the \penalty.
 2122: \def\dochapentry#1#2{%
 2123:    \penalty-300 \vskip\baselineskip
 2124:    % This \vbox (and similar ones in dosecentry etc.) used to be a
 2125:    % \line; changed to permit linebreaks for long headings.  See
 2126:    % comments above \majorheading.  Here we also use \strut to
 2127:    % keep the top end of the vbox from jamming up against the previous
 2128:    % entry in the table of contents.
 2129:    \vbox{\chapentryfonts
 2130:      \hyphenpenalty=10000\tolerance=5000 % this line and next introduced
 2131:      \parindent=0pt\strut\raggedright    % with \line -> \vbox change
 2132:      #1\dotfill
 2133:      \dopageno{#2}}%
 2134:    \nobreak\vskip .25\baselineskip
 2135: }
 2136: 
 2137: \def\dosecentry#1#2{%
 2138:    \vbox{\secentryfonts \leftskip=\tocindent
 2139:     \hyphenpenalty=10000\tolerance=5000
 2140:     \parindent=0pt\strut\raggedright #1\dotfill
 2141:     \dopageno{#2}}%
 2142: }
 2143: 
 2144: \def\dosubsecentry#1#2{%
 2145:    \vbox{\subsecentryfonts \leftskip=2\tocindent
 2146:     \hyphenpenalty=10000\tolerance=5000
 2147:     \parindent=0pt\strut\raggedright #1\dotfill
 2148:     \dopageno{#2}}%
 2149: }
 2150: 
 2151: \def\dosubsubsecentry#1#2{%
 2152:    \vbox{\subsubsecentryfonts \leftskip=3\tocindent
 2153:     \hyphenpenalty=10000\tolerance=5000
 2154:     \parindent=0pt\strut\raggedright #1\dotfill
 2155:     \dopageno{#2}}%
 2156: }
 2157: 
 2158: % Space between chapter (or whatever) number and the title.
 2159: \def\labelspace{\hskip1em \relax}
 2160: 
 2161: \def\dopageno#1{{\rm #1}}
 2162: \def\doshortpageno#1{{\rm #1}}
 2163: 
 2164: \def\chapentryfonts{\secfonts \rm}
 2165: \def\secentryfonts{\textfonts}
 2166: \let\subsecentryfonts = \textfonts
 2167: \let\subsubsecentryfonts = \textfonts
 2168: 
 2169: 
 2170: \message{environments,}
 2171: 
 2172: % Since these characters are used in examples, it should be an even number of 
 2173: % \tt widths. Each \tt character is 1en, so two makes it 1em.
 2174: % Furthermore, these definitions must come after we define our fonts.
 2175: \newbox\dblarrowbox    \newbox\longdblarrowbox
 2176: \newbox\pushcharbox    \newbox\bullbox
 2177: \newbox\equivbox       \newbox\errorbox
 2178: 
 2179: \let\ptexequiv = \equiv
 2180: 
 2181: %{\tentt
 2182: %\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
 2183: %\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
 2184: %\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
 2185: %\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
 2186: % Adapted from the manmac format (p.420 of TeXbook)
 2187: %\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
 2188: %                                      depth .1ex\hfil}
 2189: %}
 2190: 
 2191: \def\point{$\star$}
 2192: 
 2193: \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
 2194: \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
 2195: \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
 2196: 
 2197: \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
 2198: 
 2199: % Adapted from the TeXbook's \boxit.
 2200: {\tentt \global\dimen0 = 3em}% Width of the box.
 2201: \dimen2 = .55pt % Thickness of rules
 2202: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
 2203: \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
 2204: 
 2205: \global\setbox\errorbox=\hbox to \dimen0{\hfil
 2206:    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
 2207:    \advance\hsize by -2\dimen2 % Rules.
 2208:    \vbox{
 2209:       \hrule height\dimen2
 2210:       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text.
 2211:          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
 2212:          \kern3pt\vrule width\dimen2}% Space to right.
 2213:       \hrule height\dimen2}
 2214:     \hfil}
 2215: 
 2216: % The @error{} command.
 2217: \def\error{\leavevmode\lower.7ex\copy\errorbox}
 2218: 
 2219: % @tex ... @end tex    escapes into raw Tex temporarily.
 2220: % One exception: @ is still an escape character, so that @end tex works.
 2221: % But \@ or @@ will get a plain tex @ character.
 2222: 
 2223: \def\tex{\begingroup
 2224: \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
 2225: \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
 2226: \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
 2227: \catcode `\%=14
 2228: \catcode 43=12
 2229: \catcode`\"=12
 2230: \catcode`\==12
 2231: \catcode`\|=12
 2232: \catcode`\<=12
 2233: \catcode`\>=12
 2234: \escapechar=`\\
 2235: %
 2236: \let\{=\ptexlbrace
 2237: \let\}=\ptexrbrace
 2238: \let\.=\ptexdot
 2239: \let\*=\ptexstar
 2240: \let\dots=\ptexdots
 2241: \def\@{@}%
 2242: \let\bullet=\ptexbullet
 2243: \let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext \let\l=\ptexl
 2244: \let\L=\ptexL
 2245: %
 2246: \let\Etex=\endgroup}
 2247: 
 2248: % Define @lisp ... @endlisp.
 2249: % @lisp does a \begingroup so it can rebind things,
 2250: % including the definition of @endlisp (which normally is erroneous).
 2251: 
 2252: % Amount to narrow the margins by for @lisp.
 2253: \newskip\lispnarrowing \lispnarrowing=0.4in
 2254: 
 2255: % This is the definition that ^M gets inside @lisp
 2256: % phr: changed space to \null, to avoid overfull hbox problems.
 2257: {\obeyspaces%
 2258: \gdef\lisppar{\null\endgraf}}
 2259: 
 2260: % Cause \obeyspaces to make each Space cause a word-separation
 2261: % rather than the default which is that it acts punctuation.
 2262: % This is because space in tt font looks funny.
 2263: {\obeyspaces %
 2264: \gdef\sepspaces{\def {\ }}}
 2265: 
 2266: \newskip\aboveenvskipamount \aboveenvskipamount= 0pt
 2267: \def\aboveenvbreak{{\advance\aboveenvskipamount by \parskip
 2268: \endgraf \ifdim\lastskip<\aboveenvskipamount
 2269: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}}
 2270: 
 2271: \def\afterenvbreak{\endgraf \ifdim\lastskip<\aboveenvskipamount
 2272: \removelastskip \penalty-50 \vskip\aboveenvskipamount \fi}
 2273: 
 2274: % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins.
 2275: \let\nonarrowing=\relax
 2276: 
 2277: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 2278: % \cartouche: draw rectangle w/rounded corners around argument
 2279: \font\circle=lcircle10
 2280: \newdimen\circthick
 2281: \newdimen\cartouter\newdimen\cartinner
 2282: \newskip\normbskip\newskip\normpskip\newskip\normlskip
 2283: \circthick=\fontdimen8\circle
 2284: %
 2285: \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
 2286: \def\ctr{{\hskip 6pt\circle\char'010}}
 2287: \def\cbl{{\circle\char'012\hskip -6pt}}
 2288: \def\cbr{{\hskip 6pt\circle\char'011}}
 2289: \def\carttop{\hbox to \cartouter{\hskip\lskip
 2290: 	\ctl\leaders\hrule height\circthick\hfil\ctr
 2291: 	\hskip\rskip}}
 2292: \def\cartbot{\hbox to \cartouter{\hskip\lskip
 2293: 	\cbl\leaders\hrule height\circthick\hfil\cbr
 2294: 	\hskip\rskip}}
 2295: %
 2296: \newskip\lskip\newskip\rskip
 2297: 
 2298: \long\def\cartouche{%
 2299: \begingroup
 2300: 	\lskip=\leftskip \rskip=\rightskip
 2301: 	\leftskip=0pt\rightskip=0pt %we want these *outside*.
 2302: 	\cartinner=\hsize \advance\cartinner by-\lskip 
 2303: 		 	  \advance\cartinner by-\rskip
 2304: 	\cartouter=\hsize
 2305: 	\advance\cartouter by 18pt % allow for 3pt kerns on either
 2306: %				     side, and for 6pt waste from
 2307: %				     each corner char
 2308: 	\normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
 2309: 	% Flag to tell @lisp, etc., not to narrow margin.
 2310: 	\let\nonarrowing=\comment
 2311: 	\vbox\bgroup
 2312: 		\baselineskip=0pt\parskip=0pt\lineskip=0pt
 2313: 		\carttop
 2314: 		\hbox\bgroup
 2315: 			\hskip\lskip
 2316: 			\vrule\kern3pt
 2317: 			\vbox\bgroup
 2318: 				\hsize=\cartinner
 2319: 				\kern3pt
 2320: 				\begingroup
 2321: 					\baselineskip=\normbskip
 2322: 					\lineskip=\normlskip
 2323: 					\parskip=\normpskip
 2324: 					\vskip -\parskip
 2325: \def\Ecartouche{%
 2326: 				\endgroup
 2327: 				\kern3pt
 2328: 			\egroup
 2329: 			\kern3pt\vrule
 2330: 			\hskip\rskip
 2331: 		\egroup
 2332: 		\cartbot
 2333: 	\egroup
 2334: \endgroup
 2335: }}	
 2336: 
 2337: \def\lisp{\aboveenvbreak
 2338: \begingroup\inENV % This group ends at the end of the @lisp body
 2339: \hfuzz=12truept % Don't be fussy
 2340: % Make spaces be word-separators rather than space tokens.
 2341: \sepspaces %
 2342: % Single space lines
 2343: \singlespace %
 2344: % The following causes blank lines not to be ignored
 2345: % by adding a space to the end of each line.
 2346: \let\par=\lisppar
 2347: \def\Elisp{\endgroup\afterenvbreak}%
 2348: \parskip=0pt
 2349: % @cartouche defines \nonarrowing to inhibit narrowing
 2350: % at next level down.
 2351: \ifx\nonarrowing\relax
 2352: \advance \leftskip by \lispnarrowing
 2353: \exdentamount=\lispnarrowing
 2354: \let\exdent=\nofillexdent
 2355: \let\nonarrowing=\relax
 2356: \fi
 2357: \parindent=0pt
 2358: \obeyspaces \obeylines \tt \rawbackslash
 2359: \def\next##1{}\next}
 2360: 
 2361: 
 2362: \let\example=\lisp
 2363: \def\Eexample{\Elisp}
 2364: 
 2365: \let\smallexample=\lisp
 2366: \def\Esmallexample{\Elisp}
 2367: 
 2368: % Macro for 9 pt. examples, necessary to print with 5" lines.
 2369: % From Pavel@xerox.  This is not really used unless the
 2370: % @smallbook command is given.
 2371: 
 2372: \def\smalllispx{\aboveenvbreak\begingroup\inENV
 2373: %			This group ends at the end of the @lisp body
 2374: \hfuzz=12truept % Don't be fussy
 2375: % Make spaces be word-separators rather than space tokens.
 2376: \sepspaces %
 2377: % Single space lines
 2378: \singlespace %
 2379: % The following causes blank lines not to be ignored
 2380: % by adding a space to the end of each line.
 2381: \let\par=\lisppar
 2382: \def\Esmalllisp{\endgroup\afterenvbreak}%
 2383: %%%% Smaller baseline skip for small examples.
 2384: \baselineskip 10pt
 2385: \parskip=0pt
 2386: % @cartouche defines \nonarrowing to inhibit narrowing
 2387: % at next level down.
 2388: \ifx\nonarrowing\relax
 2389: \advance \leftskip by \lispnarrowing
 2390: \exdentamount=\lispnarrowing
 2391: \let\exdent=\nofillexdent
 2392: \let\nonarrowing=\relax
 2393: \fi
 2394: \parindent=0pt
 2395: \obeyspaces \obeylines \ninett \indexfonts \rawbackslash
 2396: \def\next##1{}\next}
 2397: 
 2398: % This is @display; same as @lisp except use roman font.
 2399: 
 2400: \def\display{\begingroup\inENV %This group ends at the end of the @display body
 2401: \aboveenvbreak
 2402: % Make spaces be word-separators rather than space tokens.
 2403: \sepspaces %
 2404: % Single space lines
 2405: \singlespace %
 2406: % The following causes blank lines not to be ignored
 2407: % by adding a space to the end of each line.
 2408: \let\par=\lisppar
 2409: \def\Edisplay{\endgroup\afterenvbreak}%
 2410: \parskip=0pt
 2411: % @cartouche defines \nonarrowing to inhibit narrowing
 2412: % at next level down.
 2413: \ifx\nonarrowing\relax
 2414: \advance \leftskip by \lispnarrowing
 2415: \exdentamount=\lispnarrowing
 2416: \let\exdent=\nofillexdent
 2417: \let\nonarrowing=\relax
 2418: \fi
 2419: \parindent=0pt
 2420: \obeyspaces \obeylines
 2421: \def\next##1{}\next}
 2422: 
 2423: % This is @format; same as @lisp except use roman font and don't narrow margins
 2424: 
 2425: \def\format{\begingroup\inENV %This group ends at the end of the @format body
 2426: \aboveenvbreak
 2427: % Make spaces be word-separators rather than space tokens.
 2428: \sepspaces %
 2429: \singlespace %
 2430: % The following causes blank lines not to be ignored
 2431: % by adding a space to the end of each line.
 2432: \let\par=\lisppar
 2433: \def\Eformat{\endgroup\afterenvbreak}
 2434: \parskip=0pt \parindent=0pt
 2435: \obeyspaces \obeylines
 2436: \def\next##1{}\next}
 2437: 
 2438: % @flushleft and @flushright
 2439: 
 2440: \def\flushleft{%
 2441: \begingroup\inENV %This group ends at the end of the @format body
 2442: \aboveenvbreak
 2443: % Make spaces be word-separators rather than space tokens.
 2444: \sepspaces %
 2445: % The following causes blank lines not to be ignored
 2446: % by adding a space to the end of each line.
 2447: % This also causes @ to work when the directive name
 2448: % is terminated by end of line.
 2449: \let\par=\lisppar
 2450: \def\Eflushleft{\endgroup\afterenvbreak}%
 2451: \parskip=0pt \parindent=0pt
 2452: \obeyspaces \obeylines
 2453: \def\next##1{}\next}
 2454: 
 2455: \def\flushright{%
 2456: \begingroup\inENV %This group ends at the end of the @format body
 2457: \aboveenvbreak
 2458: % Make spaces be word-separators rather than space tokens.
 2459: \sepspaces %
 2460: % The following causes blank lines not to be ignored
 2461: % by adding a space to the end of each line.
 2462: % This also causes @ to work when the directive name
 2463: % is terminated by end of line.
 2464: \let\par=\lisppar
 2465: \def\Eflushright{\endgroup\afterenvbreak}%
 2466: \parskip=0pt \parindent=0pt
 2467: \advance \leftskip by 0pt plus 1fill
 2468: \obeyspaces \obeylines
 2469: \def\next##1{}\next}
 2470: 
 2471: % @quotation - narrow the margins.
 2472: 
 2473: \def\quotation{%
 2474: \begingroup\inENV %This group ends at the end of the @quotation body
 2475: {\parskip=0pt  % because we will skip by \parskip too, later
 2476: \aboveenvbreak}%
 2477: \singlespace
 2478: \parindent=0pt
 2479: \def\Equotation{\par\endgroup\afterenvbreak}%
 2480: % @cartouche defines \nonarrowing to inhibit narrowing
 2481: % at next level down.
 2482: \ifx\nonarrowing\relax
 2483: \advance \leftskip by \lispnarrowing
 2484: \advance \rightskip by \lispnarrowing
 2485: \exdentamount=\lispnarrowing
 2486: \let\nonarrowing=\relax
 2487: \fi}
 2488: 
 2489: \message{defuns,}
 2490: % Define formatter for defuns
 2491: % First, allow user to change definition object font (\df) internally
 2492: \def\setdeffont #1 {\csname DEF#1\endcsname}
 2493: 
 2494: \newskip\defbodyindent \defbodyindent=.4in
 2495: \newskip\defargsindent \defargsindent=50pt
 2496: \newskip\deftypemargin \deftypemargin=12pt
 2497: \newskip\deflastargmargin \deflastargmargin=18pt
 2498: 
 2499: \newcount\parencount
 2500: % define \functionparens, which makes ( and ) and & do special things.
 2501: % \functionparens affects the group it is contained in.
 2502: \def\activeparens{%
 2503: \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
 2504: \catcode`\[=\active \catcode`\]=\active}
 2505: {\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
 2506: \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
 2507: \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
 2508: 
 2509: % Definitions of (, ) and & used in args for functions.
 2510: % This is the definition of ( outside of all parentheses.
 2511: \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
 2512: \global\advance\parencount by 1 }
 2513: %
 2514: % This is the definition of ( when already inside a level of parens.
 2515: \gdef\opnested{\char`\(\global\advance\parencount by 1 }
 2516: %
 2517: \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
 2518: % also in that case restore the outer-level definition of (.
 2519: \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
 2520: \global\advance \parencount by -1 }
 2521: % If we encounter &foo, then turn on ()-hacking afterwards
 2522: \gdef\amprm#1 {{\rm\&#1}\let(=\oprm \let)=\clrm\ }
 2523: %
 2524: \gdef\normalparens{\boldbrax\let&=\ampnr}
 2525: } % End of definition inside \activeparens
 2526: %% These parens (in \boldbrax) actually are a little bolder than the
 2527: %% contained text.  This is especially needed for [ and ]
 2528: \def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
 2529: \def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
 2530: 
 2531: % First, defname, which formats the header line itself.
 2532: % #1 should be the function name.
 2533: % #2 should be the type of definition, such as "Function".
 2534: 
 2535: \def\defname #1#2{%
 2536: % Get the values of \leftskip and \rightskip as they were
 2537: % outside the @def...
 2538: \dimen2=\leftskip
 2539: \advance\dimen2 by -\defbodyindent
 2540: \dimen3=\rightskip
 2541: \advance\dimen3 by -\defbodyindent
 2542: \noindent        %
 2543: \setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
 2544: \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
 2545: \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
 2546: \parshape 2 0in \dimen0 \defargsindent \dimen1     %
 2547: % Now output arg 2 ("Function" or some such)
 2548: % ending at \deftypemargin from the right margin,
 2549: % but stuck inside a box of width 0 so it does not interfere with linebreaking
 2550: {% Adjust \hsize to exclude the ambient margins,
 2551: % so that \rightline will obey them.
 2552: \advance \hsize by -\dimen2 \advance \hsize by -\dimen3
 2553: \rlap{\rightline{{\rm #2}\hskip \deftypemargin}}}%
 2554: % Make all lines underfull and no complaints:
 2555: \tolerance=10000 \hbadness=10000    
 2556: \advance\leftskip by -\defbodyindent
 2557: \exdentamount=\defbodyindent
 2558: {\df #1}\enskip        % Generate function name
 2559: }
 2560: 
 2561: % Actually process the body of a definition
 2562: % #1 should be the terminating control sequence, such as \Edefun.
 2563: % #2 should be the "another name" control sequence, such as \defunx.
 2564: % #3 should be the control sequence that actually processes the header,
 2565: %    such as \defunheader.
 2566: 
 2567: \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
 2568: \medbreak %
 2569: % Define the end token that this defining construct specifies
 2570: % so that it will exit this group.
 2571: \def#1{\endgraf\endgroup\medbreak}%
 2572: \def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
 2573: \parindent=0in
 2574: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2575: \exdentamount=\defbodyindent
 2576: \begingroup %
 2577: \catcode 61=\active %
 2578: \obeylines\activeparens\spacesplit#3}
 2579: 
 2580: \def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
 2581: \medbreak %
 2582: % Define the end token that this defining construct specifies
 2583: % so that it will exit this group.
 2584: \def#1{\endgraf\endgroup\medbreak}%
 2585: \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
 2586: \parindent=0in
 2587: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2588: \exdentamount=\defbodyindent
 2589: \begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
 2590: 
 2591: \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
 2592: \medbreak %
 2593: % Define the end token that this defining construct specifies
 2594: % so that it will exit this group.
 2595: \def#1{\endgraf\endgroup\medbreak}%
 2596: \def#2##1 ##2 {\def#4{##1}%
 2597: \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
 2598: \parindent=0in
 2599: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2600: \exdentamount=\defbodyindent
 2601: \begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
 2602: 
 2603: % These parsing functions are similar to the preceding ones
 2604: % except that they do not make parens into active characters.
 2605: % These are used for "variables" since they have no arguments.
 2606: 
 2607: \def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
 2608: \medbreak %
 2609: % Define the end token that this defining construct specifies
 2610: % so that it will exit this group.
 2611: \def#1{\endgraf\endgroup\medbreak}%
 2612: \def#2{\begingroup\obeylines\spacesplit#3}%
 2613: \parindent=0in
 2614: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2615: \exdentamount=\defbodyindent
 2616: \begingroup %
 2617: \catcode 61=\active %
 2618: \obeylines\spacesplit#3}
 2619: 
 2620: \def\defvrparsebody #1#2#3#4 {\begingroup\inENV %
 2621: \medbreak %
 2622: % Define the end token that this defining construct specifies
 2623: % so that it will exit this group.
 2624: \def#1{\endgraf\endgroup\medbreak}%
 2625: \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
 2626: \parindent=0in
 2627: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2628: \exdentamount=\defbodyindent
 2629: \begingroup\obeylines\spacesplit{#3{#4}}}
 2630: 
 2631: \def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
 2632: \medbreak %
 2633: % Define the end token that this defining construct specifies
 2634: % so that it will exit this group.
 2635: \def#1{\endgraf\endgroup\medbreak}%
 2636: \def#2##1 ##2 {\def#4{##1}%
 2637: \begingroup\obeylines\spacesplit{#3{##2}}}%
 2638: \parindent=0in
 2639: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
 2640: \exdentamount=\defbodyindent
 2641: \begingroup\obeylines\spacesplit{#3{#5}}}
 2642: 
 2643: % Split up #2 at the first space token.
 2644: % call #1 with two arguments:
 2645: %  the first is all of #2 before the space token,
 2646: %  the second is all of #2 after that space token.
 2647: % If #2 contains no space token, all of it is passed as the first arg
 2648: % and the second is passed as empty.
 2649: 
 2650: {\obeylines
 2651: \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
 2652: \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
 2653: \ifx\relax #3%
 2654: #1{#2}{}\else #1{#2}{#3#4}\fi}}
 2655: 
 2656: % So much for the things common to all kinds of definitions.
 2657: 
 2658: % Define @defun.
 2659: 
 2660: % First, define the processing that is wanted for arguments of \defun
 2661: % Use this to expand the args and terminate the paragraph they make up
 2662: 
 2663: \def\defunargs #1{\functionparens \sl
 2664: % Expand, preventing hyphenation at `-' chars.
 2665: % Note that groups don't affect changes in \hyphenchar.
 2666: \hyphenchar\tensl=0
 2667: #1%
 2668: \hyphenchar\tensl=45
 2669: \ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
 2670: \interlinepenalty=10000
 2671: \advance\rightskip by 0pt plus 1fil
 2672: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
 2673: }
 2674: 
 2675: \def\deftypefunargs #1{%
 2676: % Expand, preventing hyphenation at `-' chars.
 2677: % Note that groups don't affect changes in \hyphenchar.
 2678: \functionparens
 2679: \code{#1}%
 2680: \interlinepenalty=10000
 2681: \advance\rightskip by 0pt plus 1fil
 2682: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
 2683: }
 2684: 
 2685: % Do complete processing of one @defun or @defunx line already parsed.
 2686: 
 2687: % @deffn Command forward-char nchars
 2688: 
 2689: \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
 2690: 
 2691: \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
 2692: \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
 2693: \catcode 61=\other % Turn off change made in \defparsebody
 2694: }
 2695: 
 2696: % @defun == @deffn Function
 2697: 
 2698: \def\defun{\defparsebody\Edefun\defunx\defunheader}
 2699: 
 2700: \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
 2701: \begingroup\defname {#1}{Function}%
 2702: \defunargs {#2}\endgroup %
 2703: \catcode 61=\other % Turn off change made in \defparsebody
 2704: }
 2705: 
 2706: % @deftypefun int foobar (int @var{foo}, float @var{bar})
 2707: 
 2708: \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
 2709: 
 2710: % #1 is the data type.  #2 is the name and args.
 2711: \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
 2712: % #1 is the data type, #2 the name, #3 the args.
 2713: \def\deftypefunheaderx #1#2 #3\relax{%
 2714: \doind {fn}{\code{#2}}% Make entry in function index
 2715: \begingroup\defname {\code{#1} #2}{Function}%
 2716: \deftypefunargs {#3}\endgroup %
 2717: \catcode 61=\other % Turn off change made in \defparsebody
 2718: }
 2719: 
 2720: % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
 2721: 
 2722: \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
 2723: 
 2724: % #1 is the classification.  #2 is the data type.  #3 is the name and args.
 2725: \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
 2726: % #1 is the classification, #2 the data type, #3 the name, #4 the args.
 2727: \def\deftypefnheaderx #1#2#3 #4\relax{%
 2728: \doind {fn}{\code{#3}}% Make entry in function index
 2729: \begingroup\defname {\code{#2} #3}{#1}%
 2730: \deftypefunargs {#4}\endgroup %
 2731: \catcode 61=\other % Turn off change made in \defparsebody
 2732: }
 2733: 
 2734: % @defmac == @deffn Macro
 2735: 
 2736: \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
 2737: 
 2738: \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
 2739: \begingroup\defname {#1}{Macro}%
 2740: \defunargs {#2}\endgroup %
 2741: \catcode 61=\other % Turn off change made in \defparsebody
 2742: }
 2743: 
 2744: % @defspec == @deffn Special Form
 2745: 
 2746: \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
 2747: 
 2748: \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
 2749: \begingroup\defname {#1}{Special Form}%
 2750: \defunargs {#2}\endgroup %
 2751: \catcode 61=\other % Turn off change made in \defparsebody
 2752: }
 2753: 
 2754: % This definition is run if you use @defunx
 2755: % anywhere other than immediately after a @defun or @defunx.
 2756: 
 2757: \def\deffnx #1 {\errmessage{@deffnx in invalid context}}
 2758: \def\defunx #1 {\errmessage{@defunx in invalid context}}
 2759: \def\defmacx #1 {\errmessage{@defmacx in invalid context}}
 2760: \def\defspecx #1 {\errmessage{@defspecx in invalid context}}
 2761: \def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
 2762: \def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
 2763: 
 2764: % @defmethod, and so on
 2765: 
 2766: % @defop {Funny Method} foo-class frobnicate argument
 2767: 
 2768: \def\defop #1 {\def\defoptype{#1}%
 2769: \defopparsebody\Edefop\defopx\defopheader\defoptype}
 2770: 
 2771: \def\defopheader #1#2#3{%
 2772: \dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
 2773: \begingroup\defname {#2}{\defoptype{} on #1}%
 2774: \defunargs {#3}\endgroup %
 2775: }
 2776: 
 2777: % @defmethod == @defop Method
 2778: 
 2779: \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
 2780: 
 2781: \def\defmethodheader #1#2#3{%
 2782: \dosubind {fn}{\code{#2}}{on #1}% entry in function index
 2783: \begingroup\defname {#2}{Method on #1}%
 2784: \defunargs {#3}\endgroup %
 2785: }
 2786: 
 2787: % @defcv {Class Option} foo-class foo-flag
 2788: 
 2789: \def\defcv #1 {\def\defcvtype{#1}%
 2790: \defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
 2791: 
 2792: \def\defcvarheader #1#2#3{%
 2793: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
 2794: \begingroup\defname {#2}{\defcvtype{} of #1}%
 2795: \defvarargs {#3}\endgroup %
 2796: }
 2797: 
 2798: % @defivar == @defcv {Instance Variable}
 2799: 
 2800: \def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
 2801: 
 2802: \def\defivarheader #1#2#3{%
 2803: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
 2804: \begingroup\defname {#2}{Instance Variable of #1}%
 2805: \defvarargs {#3}\endgroup %
 2806: }
 2807: 
 2808: % These definitions are run if you use @defmethodx, etc.,
 2809: % anywhere other than immediately after a @defmethod, etc.
 2810: 
 2811: \def\defopx #1 {\errmessage{@defopx in invalid context}}
 2812: \def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
 2813: \def\defcvx #1 {\errmessage{@defcvx in invalid context}}
 2814: \def\defivarx #1 {\errmessage{@defivarx in invalid context}}
 2815: 
 2816: % Now @defvar
 2817: 
 2818: % First, define the processing that is wanted for arguments of @defvar.
 2819: % This is actually simple: just print them in roman.
 2820: % This must expand the args and terminate the paragraph they make up
 2821: \def\defvarargs #1{\normalparens #1%
 2822: \interlinepenalty=10000
 2823: \endgraf\penalty 10000\vskip -\parskip\penalty 10000}
 2824: 
 2825: % @defvr Counter foo-count
 2826: 
 2827: \def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
 2828: 
 2829: \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
 2830: \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
 2831: 
 2832: % @defvar == @defvr Variable
 2833: 
 2834: \def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
 2835: 
 2836: \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
 2837: \begingroup\defname {#1}{Variable}%
 2838: \defvarargs {#2}\endgroup %
 2839: }
 2840: 
 2841: % @defopt == @defvr {User Option}
 2842: 
 2843: \def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
 2844: 
 2845: \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
 2846: \begingroup\defname {#1}{User Option}%
 2847: \defvarargs {#2}\endgroup %
 2848: }
 2849: 
 2850: % @deftypevar int foobar
 2851: 
 2852: \def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
 2853: 
 2854: % #1 is the data type.  #2 is the name.
 2855: \def\deftypevarheader #1#2{%
 2856: \doind {vr}{\code{#2}}% Make entry in variables index
 2857: \begingroup\defname {\code{#1} #2}{Variable}%
 2858: \interlinepenalty=10000
 2859: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
 2860: \endgroup}
 2861: 
 2862: % @deftypevr {Global Flag} int enable
 2863: 
 2864: \def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
 2865: 
 2866: \def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
 2867: \begingroup\defname {\code{#2} #3}{#1}
 2868: \interlinepenalty=10000
 2869: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
 2870: \endgroup}
 2871: 
 2872: % This definition is run if you use @defvarx
 2873: % anywhere other than immediately after a @defvar or @defvarx.
 2874: 
 2875: \def\defvrx #1 {\errmessage{@defvrx in invalid context}}
 2876: \def\defvarx #1 {\errmessage{@defvarx in invalid context}}
 2877: \def\defoptx #1 {\errmessage{@defoptx in invalid context}}
 2878: \def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
 2879: \def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
 2880: 
 2881: % Now define @deftp
 2882: % Args are printed in bold, a slight difference from @defvar.
 2883: 
 2884: \def\deftpargs #1{\bf \defvarargs{#1}}
 2885: 
 2886: % @deftp Class window height width ...
 2887: 
 2888: \def\deftp{\defvrparsebody\Edeftp\deftpx\deftpheader}
 2889: 
 2890: \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
 2891: \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
 2892: 
 2893: % This definition is run if you use @deftpx, etc
 2894: % anywhere other than immediately after a @deftp, etc.
 2895: 
 2896: \def\deftpx #1 {\errmessage{@deftpx in invalid context}}
 2897: 
 2898: \message{cross reference,}
 2899: % Define cross-reference macros
 2900: \newwrite \auxfile
 2901: 
 2902: \newif\ifhavexrefs  % True if xref values are known.
 2903: \newif\ifwarnedxrefs  % True if we warned once that they aren't known.
 2904: 
 2905: % \setref{foo} defines a cross-reference point named foo.
 2906: 
 2907: \def\setref#1{%
 2908: %\dosetq{#1-title}{Ytitle}%
 2909: \dosetq{#1-pg}{Ypagenumber}%
 2910: \dosetq{#1-snt}{Ysectionnumberandtype}}
 2911: 
 2912: \def\unnumbsetref#1{%
 2913: %\dosetq{#1-title}{Ytitle}%
 2914: \dosetq{#1-pg}{Ypagenumber}%
 2915: \dosetq{#1-snt}{Ynothing}}
 2916: 
 2917: \def\appendixsetref#1{%
 2918: %\dosetq{#1-title}{Ytitle}%
 2919: \dosetq{#1-pg}{Ypagenumber}%
 2920: \dosetq{#1-snt}{Yappendixletterandtype}}
 2921: 
 2922: % \xref, \pxref, and \ref generate cross-references to specified points.
 2923: % For \xrefX, #1 is the node name, #2 the name of the Info
 2924: % cross-reference, #3 the printed node name, #4 the name of the Info
 2925: % file, #5 the name of the printed manual.  All but the node name can be
 2926: % omitted.
 2927: % 
 2928: \def\pxref#1{see \xrefX[#1,,,,,,,]}
 2929: \def\xref#1{See \xrefX[#1,,,,,,,]}
 2930: \def\ref#1{\xrefX[#1,,,,,,,]}
 2931: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup%
 2932: \def\printedmanual{\ignorespaces #5}%
 2933: \def\printednodename{\ignorespaces #3}%
 2934: %
 2935: \setbox1=\hbox{\printedmanual}%
 2936: \setbox0=\hbox{\printednodename}%
 2937: \ifdim \wd0=0pt%
 2938: \def\printednodename{\ignorespaces #1}%
 2939: %%% Uncommment the following line to make the actual chapter or section title
 2940: %%% appear inside the square brackets.
 2941: %\def\printednodename{#1-title}%
 2942: \fi%
 2943: %
 2944: %
 2945: % If we use \unhbox0 and \unhbox1 to print the node names, TeX does
 2946: % not insert empty discretionaries after hyphens, which means that it
 2947: % will not find a line break at a hyphen in a node names.  Since some
 2948: % manuals are best written with fairly long node names, containing
 2949: % hyphens, this is a loss.  Therefore, we simply give the text of
 2950: % the node name again, so it is as if TeX is seeing it for the first
 2951: % time.
 2952: \ifdim \wd1>0pt
 2953: section ``\printednodename'' in \cite{\printedmanual}%
 2954: \else%
 2955: \turnoffactive%
 2956: \refx{#1-snt}{} [\printednodename], page\tie\refx{#1-pg}{}%
 2957: \fi
 2958: \endgroup}
 2959: 
 2960: % \dosetq is the interface for calls from other macros
 2961: 
 2962: % Use \turnoffactive so that punctuation chars such as underscore
 2963: % work in node names.
 2964: \def\dosetq #1#2{{\let\folio=0 \turnoffactive%
 2965: \edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
 2966: \next}}
 2967: 
 2968: % \internalsetq {foo}{page} expands into
 2969: % CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
 2970: % When the aux file is read, ' is the escape character
 2971: 
 2972: \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
 2973: 
 2974: % Things to be expanded by \internalsetq
 2975: 
 2976: \def\Ypagenumber{\folio}
 2977: 
 2978: \def\Ytitle{\thischapter}
 2979: 
 2980: \def\Ynothing{}
 2981: 
 2982: \def\Ysectionnumberandtype{%
 2983: \ifnum\secno=0 Chapter\xreftie\the\chapno %
 2984: \else \ifnum \subsecno=0 Section\xreftie\the\chapno.\the\secno %
 2985: \else \ifnum \subsubsecno=0 %
 2986: Section\xreftie\the\chapno.\the\secno.\the\subsecno %
 2987: \else %
 2988: Section\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
 2989: \fi \fi \fi }
 2990: 
 2991: \def\Yappendixletterandtype{%
 2992: \ifnum\secno=0 Appendix\xreftie'char\the\appendixno{}%
 2993: \else \ifnum \subsecno=0 Section\xreftie'char\the\appendixno.\the\secno %
 2994: \else \ifnum \subsubsecno=0 %
 2995: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
 2996: \else %
 2997: Section\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
 2998: \fi \fi \fi }
 2999: 
 3000: \gdef\xreftie{'tie}
 3001: 
 3002: % Use TeX 3.0's \inputlineno to get the line number, for better error
 3003: % messages, but if we're using an old version of TeX, don't do anything.
 3004: % 
 3005: \ifx\inputlineno\thisisundefined
 3006:   \let\linenumber = \empty % Non-3.0.
 3007: \else
 3008:   \def\linenumber{\the\inputlineno:\space}
 3009: \fi
 3010: 
 3011: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
 3012: % If its value is nonempty, SUFFIX is output afterward.
 3013: 
 3014: \def\refx#1#2{%
 3015:   \expandafter\ifx\csname X#1\endcsname\relax
 3016:     % If not defined, say something at least.
 3017:     $\langle$un\-de\-fined$\rangle$%
 3018:     \ifhavexrefs
 3019:       \message{\linenumber Undefined cross reference `#1'.}%
 3020:     \else
 3021:       \ifwarnedxrefs\else
 3022:         \global\warnedxrefstrue
 3023:         \message{Cross reference values unknown; you must run TeX again.}%
 3024:       \fi
 3025:     \fi
 3026:   \else
 3027:     % It's defined, so just use it.
 3028:     \csname X#1\endcsname
 3029:   \fi
 3030:   #2% Output the suffix in any case.
 3031: }
 3032: 
 3033: % Read the last existing aux file, if any.  No error if none exists.
 3034: 
 3035: % This is the macro invoked by entries in the aux file.
 3036: \def\xrdef #1#2{
 3037: {\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
 3038: 
 3039: \def\readauxfile{%
 3040: \begingroup
 3041: \catcode `\^^@=\other
 3042: \catcode `\=\other
 3043: \catcode `\=\other
 3044: \catcode `\^^C=\other
 3045: \catcode `\^^D=\other
 3046: \catcode `\^^E=\other
 3047: \catcode `\^^F=\other
 3048: \catcode `\^^G=\other
 3049: \catcode `\^^H=\other
 3050: \catcode `\=\other
 3051: \catcode `\^^L=\other
 3052: \catcode `\=\other
 3053: \catcode `\=\other
 3054: \catcode `\=\other
 3055: \catcode `\=\other
 3056: \catcode `\=\other
 3057: \catcode `\=\other
 3058: \catcode `\=\other
 3059: \catcode `\=\other
 3060: \catcode `\=\other
 3061: \catcode `\=\other
 3062: \catcode `\=\other
 3063: \catcode `\=\other
 3064: \catcode 26=\other
 3065: \catcode `\^^[=\other
 3066: \catcode `\^^\=\other
 3067: \catcode `\^^]=\other
 3068: \catcode `\^^^=\other
 3069: \catcode `\^^_=\other
 3070: \catcode `\@=\other
 3071: \catcode `\^=\other
 3072: \catcode `\~=\other
 3073: \catcode `\[=\other
 3074: \catcode `\]=\other
 3075: \catcode`\"=\other
 3076: \catcode`\_=\other
 3077: \catcode`\|=\other
 3078: \catcode`\<=\other
 3079: \catcode`\>=\other
 3080: \catcode `\$=\other
 3081: \catcode `\#=\other
 3082: \catcode `\&=\other
 3083: % the aux file uses ' as the escape.
 3084: % Turn off \ as an escape so we do not lose on
 3085: % entries which were dumped with control sequences in their names.
 3086: % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
 3087: % Reference to such entries still does not work the way one would wish,
 3088: % but at least they do not bomb out when the aux file is read in.
 3089: \catcode `\{=1 \catcode `\}=2
 3090: \catcode `\%=\other
 3091: \catcode `\'=0
 3092: \catcode `\\=\other
 3093: \openin 1 \jobname.aux
 3094: \ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
 3095: \fi
 3096: % Open the new aux file.  Tex will close it automatically at exit.
 3097: \openout \auxfile=\jobname.aux
 3098: \endgroup}
 3099: 
 3100: 
 3101: % Footnotes.
 3102: 
 3103: \newcount \footnoteno
 3104: 
 3105: % The trailing space in the following definition for supereject is
 3106: % vital for proper filling; pages come out unaligned when you do a
 3107: % pagealignmacro call if that space before the closing brace is
 3108: % removed.
 3109: \def\supereject{\par\penalty -20000\footnoteno =0 }
 3110: 
 3111: % @footnotestyle is meaningful for info output only..
 3112: \let\footnotestyle=\comment
 3113: 
 3114: \let\ptexfootnote=\footnote
 3115: 
 3116: {\catcode `\@=11
 3117: \long\gdef\footnote #1{\global\advance \footnoteno by \@ne
 3118: \unskip
 3119: \edef\thisfootno{$^{\the\footnoteno}$}%
 3120: \let\@sf\empty
 3121: \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
 3122: \thisfootno\@sf \footnotezzz{#1}}
 3123: % \parsearg\footnotezzz}
 3124: 
 3125: \long\gdef\footnotezzz #1{\insert\footins{
 3126: \interlinepenalty\interfootnotelinepenalty
 3127: \splittopskip\ht\strutbox % top baseline for broken footnotes
 3128: \splitmaxdepth\dp\strutbox \floatingpenalty\@MM
 3129: \leftskip\z@skip \rightskip\z@skip \spaceskip\z@skip \xspaceskip\z@skip
 3130: \footstrut\parindent=\defaultparindent\hang\textindent{\thisfootno}#1\strut}}
 3131: 
 3132: }%end \catcode `\@=11
 3133: 
 3134: % End of control word definitions.
 3135: 
 3136: \message{and turning on texinfo input format.}
 3137: 
 3138: \def\openindices{%
 3139:    \newindex{cp}%
 3140:    \newcodeindex{fn}%
 3141:    \newcodeindex{vr}%
 3142:    \newcodeindex{tp}%
 3143:    \newcodeindex{ky}%
 3144:    \newcodeindex{pg}%
 3145: }
 3146: 
 3147: % Set some numeric style parameters, for 8.5 x 11 format.
 3148: 
 3149: %\hsize = 6.5in
 3150: \newdimen\defaultparindent \defaultparindent = 15pt
 3151: \parindent = \defaultparindent
 3152: \parskip 18pt plus 1pt
 3153: \baselineskip 15pt
 3154: \advance\topskip by 1.2cm
 3155: 
 3156: % Prevent underfull vbox error messages.
 3157: \vbadness=10000
 3158: 
 3159: % Following George Bush, just get rid of widows and orphans.
 3160: \widowpenalty=10000
 3161: \clubpenalty=10000
 3162: 
 3163: % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
 3164: % using an old version of TeX, don't do anything.  We want the amount of
 3165: % stretch added to depend on the line length, hence the dependence on
 3166: % \hsize.  This makes it come to about 9pt for the 8.5x11 format.
 3167: % 
 3168: \ifx\emergencystretch\thisisundefined \else
 3169:   \emergencystretch = \hsize
 3170:   \divide\emergencystretch by 45
 3171: \fi
 3172: 
 3173: % Use @smallbook to reset parameters for 7x9.5 format  (or else 7x9.25)
 3174: \def\smallbook{
 3175: \global\lispnarrowing = 0.3in
 3176: \global\baselineskip 12pt
 3177: \advance\topskip by -1cm
 3178: \global\parskip 3pt plus 1pt
 3179: \global\hsize = 5in
 3180: \global\doublecolumnhsize=2.4in \global\doublecolumnvsize=15.0in
 3181: \global\vsize=7.5in
 3182: \global\tolerance=700
 3183: \global\hfuzz=1pt
 3184: \global\contentsrightmargin=0pt
 3185: 
 3186: \global\pagewidth=\hsize
 3187: \global\pageheight=\vsize
 3188: 
 3189: \global\let\smalllisp=\smalllispx
 3190: \global\let\smallexample=\smalllispx
 3191: \global\def\Esmallexample{\Esmalllisp}
 3192: }
 3193: 
 3194: % Use @afourpaper to print on European A4 paper.
 3195: \def\afourpaper{
 3196: \global\tolerance=700
 3197: \global\hfuzz=1pt
 3198: \global\baselineskip=12pt
 3199: \global\parskip 15pt plus 1pt
 3200: 
 3201: \global\vsize= 53\baselineskip
 3202: \advance\vsize by \topskip
 3203: %\global\hsize=   5.85in     % A4 wide 10pt
 3204: \global\hsize=  6.5in
 3205: \global\outerhsize=\hsize
 3206: \global\advance\outerhsize by 0.5in
 3207: \global\outervsize=\vsize
 3208: \global\advance\outervsize by 0.6in
 3209: \global\doublecolumnhsize=\hsize
 3210: \global\divide\doublecolumnhsize by 2
 3211: \global\advance\doublecolumnhsize by -0.1in
 3212: \global\doublecolumnvsize=\vsize
 3213: \global\multiply\doublecolumnvsize by 2
 3214: \global\advance\doublecolumnvsize by 0.1in
 3215: 
 3216: \global\pagewidth=\hsize
 3217: \global\pageheight=\vsize
 3218: }
 3219: 
 3220: %% For a final copy, take out the rectangles
 3221: %% that mark overfull boxes (in case you have decided
 3222: %% that the text looks ok even though it passes the margin).
 3223: \def\finalout{\overfullrule=0pt}
 3224: 
 3225: % Define macros to output various characters with catcode for normal text.
 3226: \catcode`\"=\other
 3227: \catcode`\~=\other
 3228: \catcode`\^=\other
 3229: \catcode`\_=\other
 3230: \catcode`\|=\other
 3231: \catcode`\<=\other
 3232: \catcode`\>=\other
 3233: \catcode`\+=\other
 3234: \def\normaldoublequote{"}
 3235: \def\normaltilde{~}
 3236: \def\normalcaret{^}
 3237: \def\normalunderscore{_}
 3238: \def\normalverticalbar{|}
 3239: \def\normalless{<}
 3240: \def\normalgreater{>}
 3241: \def\normalplus{+}
 3242: 
 3243: % This macro is used to make a character print one way in ttfont
 3244: % where it can probably just be output, and another way in other fonts,
 3245: % where something hairier probably needs to be done.
 3246: %
 3247: % #1 is what to print if we are indeed using \tt; #2 is what to print
 3248: % otherwise.  Since all the Computer Modern typewriter fonts have zero
 3249: % interword stretch (and shrink), and it is reasonable to expect all
 3250: % typewriter fonts to have this, we can check that font parameter.
 3251: % 
 3252: \def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
 3253: 
 3254: % Turn off all special characters except @
 3255: % (and those which the user can use as if they were ordinary).
 3256: % Most of these we simply print from the \tt font, but for some, we can
 3257: % use math or other variants that look better in normal text.
 3258: 
 3259: \catcode`\"=\active
 3260: \def\activedoublequote{{\tt \char '042}}
 3261: \let"=\activedoublequote
 3262: \catcode`\~=\active
 3263: \def~{{\tt \char '176}}
 3264: \chardef\hat=`\^
 3265: \catcode`\^=\active
 3266: \def^{{\tt \hat}}
 3267: 
 3268: \catcode`\_=\active
 3269: \def_{\ifusingtt\normalunderscore\_}
 3270: % Subroutine for the previous macro.
 3271: \def\_{\lvvmode \kern.06em \vbox{\hrule width.3em height.1ex}}
 3272: 
 3273: % \lvvmode is equivalent in function to \leavevmode.
 3274: % Using \leavevmode runs into trouble when written out to
 3275: % an index file due to the expansion of \leavevmode into ``\unhbox
 3276: % \voidb@x'' ---which looks to TeX like ``\unhbox \voidb\x'' due to our
 3277: % magic tricks with @.
 3278: \def\lvvmode{\vbox to 0pt{}}
 3279: 
 3280: \catcode`\|=\active
 3281: \def|{{\tt \char '174}}
 3282: \chardef \less=`\<
 3283: \catcode`\<=\active
 3284: \def<{{\tt \less}}
 3285: \chardef \gtr=`\>
 3286: \catcode`\>=\active
 3287: \def>{{\tt \gtr}}
 3288: \catcode`\+=\active
 3289: \def+{{\tt \char 43}}
 3290: %\catcode 27=\active
 3291: %\def^^[{$\diamondsuit$}
 3292: 
 3293: % Used sometimes to turn off (effectively) the active characters
 3294: % even after parsing them.
 3295: \def\turnoffactive{\let"=\normaldoublequote
 3296: \let~=\normaltilde
 3297: \let^=\normalcaret
 3298: \let_=\normalunderscore
 3299: \let|=\normalverticalbar
 3300: \let<=\normalless
 3301: \let>=\normalgreater
 3302: \let+=\normalplus}
 3303: 
 3304: % Set up an active definition for =, but don't enable it most of the time.
 3305: {\catcode`\==\active
 3306: \global\def={{\tt \char 61}}}
 3307: 
 3308: \catcode`\@=0
 3309: 
 3310: % \rawbackslashxx output one backslash character in current font
 3311: \global\chardef\rawbackslashxx=`\\
 3312: %{\catcode`\\=\other
 3313: %@gdef@rawbackslashxx{\}}
 3314: 
 3315: % \rawbackslash redefines \ as input to do \rawbackslashxx.
 3316: {\catcode`\\=\active
 3317: @gdef@rawbackslash{@let\=@rawbackslashxx }}
 3318: 
 3319: % \normalbackslash outputs one backslash in fixed width font.
 3320: \def\normalbackslash{{\tt\rawbackslashxx}}
 3321: 
 3322: % Say @foo, not \foo, in error messages.
 3323: \escapechar=`\@
 3324: 
 3325: % \catcode 17=0   % Define control-q
 3326: \catcode`\\=\active
 3327: 
 3328: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
 3329: % That is what \eatinput is for; after that, the `\' should revert to printing 
 3330: % a backslash.
 3331: %
 3332: @gdef@eatinput input texinfo{@fixbackslash}
 3333: @global@let\ = @eatinput
 3334: 
 3335: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
 3336: % the first `\{ in the file would cause an error. This macro tries to fix 
 3337: % that, assuming it is called before the first `\' could plausibly occur.
 3338: % 
 3339: @gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi}
 3340: 
 3341: %% These look ok in all fonts, so just make them not special.  The @rm below
 3342: %% makes sure that the current font starts out as the newly loaded cmr10
 3343: @catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
 3344: 
 3345: @textfonts
 3346: @rm
 3347: 
 3348: @c Local variables:
 3349: @c page-delimiter: "^\\\\message"
 3350: @c End:

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