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							5994 lines
						
					
					
						
							196 KiB
						
					
					
				| % texinfo.tex -- TeX macros to handle Texinfo files. | |
| % | |
| % Load plain if necessary, i.e., if running under initex. | |
| \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi | |
| % | |
| \def\texinfoversion{1999-10-01.07} | |
| % | |
| % Copyright (C) 1985, 86, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 | |
| % Free Software Foundation, Inc. | |
| % | |
| % This texinfo.tex file is free software; you can redistribute it and/or | |
| % modify it under the terms of the GNU General Public License as | |
| % published by the Free Software Foundation; either version 2, or (at | |
| % your option) any later version. | |
| % | |
| % This texinfo.tex file is distributed in the hope that it will be | |
| % useful, but WITHOUT ANY WARRANTY; without even the implied warranty | |
| % of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | |
| % General Public License for more details. | |
| % | |
| % You should have received a copy of the GNU General Public License | |
| % along with this texinfo.tex file; see the file COPYING.  If not, write | |
| % to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| % Boston, MA 02110-1301, USA. | |
| % | |
| % In other words, you are welcome to use, share and improve this program. | |
| % You are forbidden to forbid anyone else to use, share and improve | |
| % what you give them.   Help stamp out software-hoarding! | |
| % | |
| % Please try the latest version of texinfo.tex before submitting bug | |
| % reports; you can get the latest version from: | |
| %   ftp://ftp.gnu.org/gnu/texinfo.tex | |
| %   (and all GNU mirrors, see http://www.gnu.org/order/ftp.html) | |
| %   ftp://texinfo.org/tex/texinfo.tex | |
| %   ftp://us.ctan.org/macros/texinfo/texinfo.tex | |
| %   (and all CTAN mirrors, finger ctan@us.ctan.org for a list). | |
| %   /home/gd/gnu/doc/texinfo.tex on the GNU machines. | |
| % The texinfo.tex in any given Texinfo distribution could well be out | |
| % of date, so if that's what you're using, please check. | |
| % Texinfo has a small home page at http://texinfo.org/. | |
| % | |
| % Send bug reports to bug-texinfo@gnu.org.  Please include including a | |
| % complete document in each bug report with which we can reproduce the | |
| % problem.  Patches are, of course, greatly appreciated. | |
| % | |
| % To process a Texinfo manual with TeX, it's most reliable to use the | |
| % texi2dvi shell script that comes with the distribution.  For a simple | |
| % manual foo.texi, however, you can get away with this: | |
| %   tex foo.texi | |
| %   texindex foo.?? | |
| %   tex foo.texi | |
| %   tex foo.texi | |
| %   dvips foo.dvi -o # or whatever, to process the dvi file; this makes foo.ps. | |
| % The extra runs of TeX get the cross-reference information correct. | |
| % Sometimes one run after texindex suffices, and sometimes you need more | |
| % than two; texi2dvi does it as many times as necessary. | |
| % | |
| % It is possible to adapt texinfo.tex for other languages.  You can get | |
| % the existing language-specific files from ftp://ftp.gnu.org/gnu/texinfo/. | |
|  | |
| \message{Loading texinfo [version \texinfoversion]:} | |
| 
 | |
| % If in a .fmt file, print the version number | |
| % and turn on active characters that we couldn't do earlier because | |
| % they might have appeared in the input file name. | |
| \everyjob{\message{[Texinfo version \texinfoversion]}% | |
|   \catcode`+=\active \catcode`\_=\active} | |
| 
 | |
| % Save some parts of plain tex whose names we will redefine. | |
| \let\ptexb=\b | |
| \let\ptexbullet=\bullet | |
| \let\ptexc=\c | |
| \let\ptexcomma=\, | |
| \let\ptexdot=\. | |
| \let\ptexdots=\dots | |
| \let\ptexend=\end | |
| \let\ptexequiv=\equiv | |
| \let\ptexexclam=\! | |
| \let\ptexi=\i | |
| \let\ptexlbrace=\{ | |
| \let\ptexrbrace=\} | |
| \let\ptexstar=\* | |
| \let\ptext=\t | |
| 
 | |
| % We never want plain's outer \+ definition in Texinfo. | |
| % For @tex, we can use \tabalign. | |
| \let\+ = \relax | |
| 
 | |
| \message{Basics,} | |
| \chardef\other=12 | |
| 
 | |
| % If this character appears in an error message or help string, it | |
| % starts a new line in the output. | |
| \newlinechar = `^^J | |
| 
 | |
| % Set up fixed words for English if not already set. | |
| \ifx\putwordAppendix\undefined  \gdef\putwordAppendix{Appendix}\fi | |
| \ifx\putwordChapter\undefined   \gdef\putwordChapter{Chapter}\fi | |
| \ifx\putwordfile\undefined      \gdef\putwordfile{file}\fi | |
| \ifx\putwordin\undefined        \gdef\putwordin{in}\fi | |
| \ifx\putwordIndexIsEmpty\undefined     \gdef\putwordIndexIsEmpty{(Index is empty)}\fi | |
| \ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi | |
| \ifx\putwordInfo\undefined      \gdef\putwordInfo{Info}\fi | |
| \ifx\putwordInstanceVariableof\undefined \gdef\putwordInstanceVariableof{Instance Variable of}\fi | |
| \ifx\putwordMethodon\undefined  \gdef\putwordMethodon{Method on}\fi | |
| \ifx\putwordNoTitle\undefined   \gdef\putwordNoTitle{No Title}\fi | |
| \ifx\putwordof\undefined        \gdef\putwordof{of}\fi | |
| \ifx\putwordon\undefined        \gdef\putwordon{on}\fi | |
| \ifx\putwordpage\undefined      \gdef\putwordpage{page}\fi | |
| \ifx\putwordsection\undefined   \gdef\putwordsection{section}\fi | |
| \ifx\putwordSection\undefined   \gdef\putwordSection{Section}\fi | |
| \ifx\putwordsee\undefined       \gdef\putwordsee{see}\fi | |
| \ifx\putwordSee\undefined       \gdef\putwordSee{See}\fi | |
| \ifx\putwordShortTOC\undefined  \gdef\putwordShortTOC{Short Contents}\fi | |
| \ifx\putwordTOC\undefined       \gdef\putwordTOC{Table of Contents}\fi | |
| % | |
| \ifx\putwordMJan\undefined \gdef\putwordMJan{January}\fi | |
| \ifx\putwordMFeb\undefined \gdef\putwordMFeb{February}\fi | |
| \ifx\putwordMMar\undefined \gdef\putwordMMar{March}\fi | |
| \ifx\putwordMApr\undefined \gdef\putwordMApr{April}\fi | |
| \ifx\putwordMMay\undefined \gdef\putwordMMay{May}\fi | |
| \ifx\putwordMJun\undefined \gdef\putwordMJun{June}\fi | |
| \ifx\putwordMJul\undefined \gdef\putwordMJul{July}\fi | |
| \ifx\putwordMAug\undefined \gdef\putwordMAug{August}\fi | |
| \ifx\putwordMSep\undefined \gdef\putwordMSep{September}\fi | |
| \ifx\putwordMOct\undefined \gdef\putwordMOct{October}\fi | |
| \ifx\putwordMNov\undefined \gdef\putwordMNov{November}\fi | |
| \ifx\putwordMDec\undefined \gdef\putwordMDec{December}\fi | |
| % | |
| \ifx\putwordDefmac\undefined    \gdef\putwordDefmac{Macro}\fi | |
| \ifx\putwordDefspec\undefined   \gdef\putwordDefspec{Special Form}\fi | |
| \ifx\putwordDefvar\undefined    \gdef\putwordDefvar{Variable}\fi | |
| \ifx\putwordDefopt\undefined    \gdef\putwordDefopt{User Option}\fi | |
| \ifx\putwordDeftypevar\undefined\gdef\putwordDeftypevar{Variable}\fi | |
| \ifx\putwordDeffunc\undefined   \gdef\putwordDeffunc{Function}\fi | |
| \ifx\putwordDeftypefun\undefined\gdef\putwordDeftypefun{Function}\fi | |
| 
 | |
| % Ignore a token. | |
| % | |
| \def\gobble#1{} | |
| 
 | |
| \hyphenation{ap-pen-dix} | |
| \hyphenation{mini-buf-fer mini-buf-fers} | |
| \hyphenation{eshell} | |
| \hyphenation{white-space} | |
| 
 | |
| % Margin to add to right of even pages, to left of odd pages. | |
| \newdimen \bindingoffset | |
| \newdimen \normaloffset | |
| \newdimen\pagewidth \newdimen\pageheight | |
| 
 | |
| % Sometimes it is convenient to have everything in the transcript file | |
| % and nothing on the terminal.  We don't just call \tracingall here, | |
| % since that produces some useless output on the terminal. | |
| % | |
| \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}% | |
| \ifx\eTeXversion\undefined | |
| \def\loggingall{\tracingcommands2 \tracingstats2 | |
|    \tracingpages1 \tracingoutput1 \tracinglostchars1 | |
|    \tracingmacros2 \tracingparagraphs1 \tracingrestores1 | |
|    \showboxbreadth\maxdimen\showboxdepth\maxdimen | |
| }% | |
| \else | |
| \def\loggingall{\tracingcommands3 \tracingstats2 | |
|    \tracingpages1 \tracingoutput1 \tracinglostchars1 | |
|    \tracingmacros2 \tracingparagraphs1 \tracingrestores1 | |
|    \tracingscantokens1 \tracingassigns1 \tracingifs1 | |
|    \tracinggroups1 \tracingnesting2 | |
|    \showboxbreadth\maxdimen\showboxdepth\maxdimen | |
| }% | |
| \fi | |
| 
 | |
| % For @cropmarks command. | |
| % Do @cropmarks to get crop marks. | |
| % | |
| \newif\ifcropmarks | |
| \let\cropmarks = \cropmarkstrue | |
| % | |
| % Dimensions to add cropmarks at corners. | |
| % Added by P. A. MacKay, 12 Nov. 1986 | |
| % | |
| \newdimen\outerhsize \newdimen\outervsize % set by the paper size routines | |
| \newdimen\cornerlong  \cornerlong=1pc | |
| \newdimen\cornerthick \cornerthick=.3pt | |
| \newdimen\topandbottommargin \topandbottommargin=.75in | |
| 
 | |
| % Main output routine. | |
| \chardef\PAGE = 255 | |
| \output = {\onepageout{\pagecontents\PAGE}} | |
| 
 | |
| \newbox\headlinebox | |
| \newbox\footlinebox | |
| 
 | |
| % \onepageout takes a vbox as an argument.  Note that \pagecontents | |
| % does insertions, but you have to call it yourself. | |
| \def\onepageout#1{% | |
|   \ifcropmarks \hoffset=0pt \else \hoffset=\normaloffset \fi | |
|   % | |
|   \ifodd\pageno  \advance\hoffset by \bindingoffset | |
|   \else \advance\hoffset by -\bindingoffset\fi | |
|   % | |
|   % Do this outside of the \shipout so @code etc. will be expanded in | |
|   % the headline as they should be, not taken literally (outputting ''code). | |
|   \setbox\headlinebox = \vbox{\let\hsize=\pagewidth \makeheadline}% | |
|   \setbox\footlinebox = \vbox{\let\hsize=\pagewidth \makefootline}% | |
|   % | |
|   {% | |
|     % Have to do this stuff outside the \shipout because we want it to | |
|     % take effect in \write's, yet the group defined by the \vbox ends | |
|     % before the \shipout runs. | |
|     % | |
|     \escapechar = `\\     % use backslash in output files. | |
|     \indexdummies         % don't expand commands in the output. | |
|     \normalturnoffactive  % \ in index entries must not stay \, e.g., if | |
|                    % the page break happens to be in the middle of an example. | |
|     \shipout\vbox{% | |
|       \ifcropmarks \vbox to \outervsize\bgroup | |
|         \hsize = \outerhsize | |
|         \vskip-\topandbottommargin | |
|         \vtop to0pt{% | |
|           \line{\ewtop\hfil\ewtop}% | |
|           \nointerlineskip | |
|           \line{% | |
|             \vbox{\moveleft\cornerthick\nstop}% | |
|             \hfill | |
|             \vbox{\moveright\cornerthick\nstop}% | |
|           }% | |
|           \vss}% | |
|         \vskip\topandbottommargin | |
|         \line\bgroup | |
|           \hfil % center the page within the outer (page) hsize. | |
|           \ifodd\pageno\hskip\bindingoffset\fi | |
|           \vbox\bgroup | |
|       \fi | |
|       % | |
|       \unvbox\headlinebox | |
|       \pagebody{#1}% | |
|       \ifdim\ht\footlinebox > 0pt | |
|         % Only leave this space if the footline is nonempty. | |
|         % (We lessened \vsize for it in \oddfootingxxx.) | |
|         % The \baselineskip=24pt in plain's \makefootline has no effect. | |
|         \vskip 2\baselineskip | |
|         \unvbox\footlinebox | |
|       \fi | |
|       % | |
|       \ifpdfmakepagedest \pdfmkdest{\the\pageno} \fi | |
|       % | |
|       \ifcropmarks | |
|           \egroup % end of \vbox\bgroup | |
|         \hfil\egroup % end of (centering) \line\bgroup | |
|         \vskip\topandbottommargin plus1fill minus1fill | |
|         \boxmaxdepth = \cornerthick | |
|         \vbox to0pt{\vss | |
|           \line{% | |
|             \vbox{\moveleft\cornerthick\nsbot}% | |
|             \hfill | |
|             \vbox{\moveright\cornerthick\nsbot}% | |
|           }% | |
|           \nointerlineskip | |
|           \line{\ewbot\hfil\ewbot}% | |
|         }% | |
|       \egroup % \vbox from first cropmarks clause | |
|       \fi | |
|     }% end of \shipout\vbox | |
|   }% end of group with \turnoffactive | |
|   \advancepageno | |
|   \ifnum\outputpenalty>-20000 \else\dosupereject\fi | |
| } | |
| 
 | |
| \newinsert\margin \dimen\margin=\maxdimen | |
| 
 | |
| \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}} | |
| {\catcode`\@ =11 | |
| \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi | |
| % marginal hacks, juha@viisa.uucp (Juha Takala) | |
| \ifvoid\margin\else % marginal info is present | |
|   \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi | |
| \dimen@=\dp#1 \unvbox#1 | |
| \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi | |
| \ifr@ggedbottom \kern-\dimen@ \vfil \fi} | |
| } | |
| 
 | |
| % Here are the rules for the cropmarks.  Note that they are | |
| % offset so that the space between them is truly \outerhsize or \outervsize | |
| % (P. A. MacKay, 12 November, 1986) | |
| % | |
| \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong} | |
| \def\nstop{\vbox | |
|   {\hrule height\cornerthick depth\cornerlong width\cornerthick}} | |
| \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong} | |
| \def\nsbot{\vbox | |
|   {\hrule height\cornerlong depth\cornerthick width\cornerthick}} | |
| 
 | |
| % Parse an argument, then pass it to #1.  The argument is the rest of | |
| % the input line (except we remove a trailing comment).  #1 should be a | |
| % macro which expects an ordinary undelimited TeX argument. | |
| % | |
| \def\parsearg#1{% | |
|   \let\next = #1% | |
|   \begingroup | |
|     \obeylines | |
|     \futurelet\temp\parseargx | |
| } | |
| 
 | |
| % If the next token is an obeyed space (from an @example environment or | |
| % the like), remove it and recurse.  Otherwise, we're done. | |
| \def\parseargx{% | |
|   % \obeyedspace is defined far below, after the definition of \sepspaces. | |
|   \ifx\obeyedspace\temp | |
|     \expandafter\parseargdiscardspace | |
|   \else | |
|     \expandafter\parseargline | |
|   \fi | |
| } | |
| 
 | |
| % Remove a single space (as the delimiter token to the macro call). | |
| {\obeyspaces % | |
|  \gdef\parseargdiscardspace {\futurelet\temp\parseargx}} | |
| 
 | |
| {\obeylines % | |
|   \gdef\parseargline#1^^M{% | |
|     \endgroup % End of the group started in \parsearg. | |
|     % | |
|     % First remove any @c comment, then any @comment. | |
|     % Result of each macro is put in \toks0. | |
|     \argremovec #1\c\relax % | |
|     \expandafter\argremovecomment \the\toks0 \comment\relax % | |
|     % | |
|     % Call the caller's macro, saved as \next in \parsearg. | |
|     \expandafter\next\expandafter{\the\toks0}% | |
|   }% | |
| } | |
| 
 | |
| % Since all \c{,omment} does is throw away the argument, we can let TeX | |
| % do that for us.  The \relax here is matched by the \relax in the call | |
| % in \parseargline; it could be more or less anything, its purpose is | |
| % just to delimit the argument to the \c. | |
| \def\argremovec#1\c#2\relax{\toks0 = {#1}} | |
| \def\argremovecomment#1\comment#2\relax{\toks0 = {#1}} | |
| 
 | |
| % \argremovec{,omment} might leave us with trailing spaces, though; e.g., | |
| %    @end itemize  @c foo | |
| % will have two active spaces as part of the argument with the | |
| % `itemize'.  Here we remove all active spaces from #1, and assign the | |
| % result to \toks0. | |
| % | |
| % This loses if there are any *other* active characters besides spaces | |
| % in the argument -- _ ^ +, for example -- since they get expanded. | |
| % Fortunately, Texinfo does not define any such commands.  (If it ever | |
| % does, the catcode of the characters in questionwill have to be changed | |
| % here.)  But this means we cannot call \removeactivespaces as part of | |
| % \argremovec{,omment}, since @c uses \parsearg, and thus the argument | |
| % that \parsearg gets might well have any character at all in it. | |
| % | |
| \def\removeactivespaces#1{% | |
|   \begingroup | |
|     \ignoreactivespaces | |
|     \edef\temp{#1}% | |
|     \global\toks0 = \expandafter{\temp}% | |
|   \endgroup | |
| } | |
| 
 | |
| % Change the active space to expand to nothing. | |
| % | |
| \begingroup | |
|   \obeyspaces | |
|   \gdef\ignoreactivespaces{\obeyspaces\let =\empty} | |
| \endgroup | |
| 
 | |
| 
 | |
| \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next} | |
| 
 | |
| %% These are used to keep @begin/@end levels from running away | |
| %% Call \inENV within environments (after a \begingroup) | |
| \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi} | |
| \def\ENVcheck{% | |
| \ifENV\errmessage{Still within an environment; press RETURN to continue} | |
| \endgroup\fi} % This is not perfect, but it should reduce lossage | |
|  | |
| % @begin foo  is the same as @foo, for now. | |
| \newhelp\EMsimple{Press RETURN to continue.} | |
| 
 | |
| \outer\def\begin{\parsearg\beginxxx} | |
| 
 | |
| \def\beginxxx #1{% | |
| \expandafter\ifx\csname #1\endcsname\relax | |
| {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else | |
| \csname #1\endcsname\fi} | |
| 
 | |
| % @end foo executes the definition of \Efoo. | |
| % | |
| \def\end{\parsearg\endxxx} | |
| \def\endxxx #1{% | |
|   \removeactivespaces{#1}% | |
|   \edef\endthing{\the\toks0}% | |
|   % | |
|   \expandafter\ifx\csname E\endthing\endcsname\relax | |
|     \expandafter\ifx\csname \endthing\endcsname\relax | |
|       % There's no \foo, i.e., no ``environment'' foo. | |
|       \errhelp = \EMsimple | |
|       \errmessage{Undefined command `@end \endthing'}% | |
|     \else | |
|       \unmatchedenderror\endthing | |
|     \fi | |
|   \else | |
|     % Everything's ok; the right environment has been started. | |
|     \csname E\endthing\endcsname | |
|   \fi | |
| } | |
| 
 | |
| % There is an environment #1, but it hasn't been started.  Give an error. | |
| % | |
| \def\unmatchedenderror#1{% | |
|   \errhelp = \EMsimple | |
|   \errmessage{This `@end #1' doesn't have a matching `@#1'}% | |
| } | |
| 
 | |
| % Define the control sequence \E#1 to give an unmatched @end error. | |
| % | |
| \def\defineunmatchedend#1{% | |
|   \expandafter\def\csname E#1\endcsname{\unmatchedenderror{#1}}% | |
| } | |
| 
 | |
| 
 | |
| % Single-spacing is done by various environments (specifically, in | |
| % \nonfillstart and \quotations). | |
| \newskip\singlespaceskip \singlespaceskip = 12.5pt | |
| \def\singlespace{% | |
|   % Why was this kern here?  It messes up equalizing space above and below | |
|   % environments.  --karl, 6may93 | |
|   %{\advance \baselineskip by -\singlespaceskip | |
|   %\kern \baselineskip}% | |
|   \setleading \singlespaceskip | |
| } | |
| 
 | |
| %% Simple single-character @ commands | |
|  | |
| % @@ prints an @ | |
| % Kludge this until the fonts are right (grr). | |
| \def\@{{\tt\char64}} | |
| 
 | |
| % This is turned off because it was never documented | |
| % and you can use @w{...} around a quote to suppress ligatures. | |
| %% Define @` and @' to be the same as ` and ' | |
| %% but suppressing ligatures. | |
| %\def\`{{`}} | |
| %\def\'{{'}} | |
|  | |
| % Used to generate quoted braces. | |
| \def\mylbrace {{\tt\char123}} | |
| \def\myrbrace {{\tt\char125}} | |
| \let\{=\mylbrace | |
| \let\}=\myrbrace | |
| \begingroup | |
|   % Definitions to produce actual \{ & \} command in an index. | |
|   \catcode`\{ = 12 \catcode`\} = 12 | |
|   \catcode`\[ = 1 \catcode`\] = 2 | |
|   \catcode`\@ = 0 \catcode`\\ = 12 | |
|   @gdef@lbracecmd[\{]% | |
|   @gdef@rbracecmd[\}]% | |
| @endgroup | |
| 
 | |
| % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent | |
| % Others are defined by plain TeX: @` @' @" @^ @~ @= @v @H. | |
| \let\, = \c | |
| \let\dotaccent = \. | |
| \def\ringaccent#1{{\accent23 #1}} | |
| \let\tieaccent = \t | |
| \let\ubaraccent = \b | |
| \let\udotaccent = \d | |
| 
 | |
| % Other special characters: @questiondown @exclamdown | |
| % Plain TeX defines: @AA @AE @O @OE @L (and lowercase versions) @ss. | |
| \def\questiondown{?`} | |
| \def\exclamdown{!`} | |
| 
 | |
| % Dotless i and dotless j, used for accents. | |
| \def\imacro{i} | |
| \def\jmacro{j} | |
| \def\dotless#1{% | |
|   \def\temp{#1}% | |
|   \ifx\temp\imacro \ptexi | |
|   \else\ifx\temp\jmacro \j | |
|   \else \errmessage{@dotless can be used only with i or j}% | |
|   \fi\fi | |
| } | |
| 
 | |
| % Be sure we're in horizontal mode when doing a tie, since we make space | |
| % equivalent to this in @example-like environments. Otherwise, a space | |
| % at the beginning of a line will start with \penalty -- and | |
| % since \penalty is valid in vertical mode, we'd end up putting the | |
| % penalty on the vertical list instead of in the new paragraph. | |
| {\catcode`@ = 11 | |
|  % Avoid using \@M directly, because that causes trouble | |
|  % if the definition is written into an index file. | |
|  \global\let\tiepenalty = \@M | |
|  \gdef\tie{\leavevmode\penalty\tiepenalty\ } | |
| } | |
| 
 | |
| % @: forces normal size whitespace following. | |
| \def\:{\spacefactor=1000 } | |
| 
 | |
| % @* forces a line break. | |
| \def\*{\hfil\break\hbox{}\ignorespaces} | |
| 
 | |
| % @. is an end-of-sentence period. | |
| \def\.{.\spacefactor=3000 } | |
| 
 | |
| % @! is an end-of-sentence bang. | |
| \def\!{!\spacefactor=3000 } | |
| 
 | |
| % @? is an end-of-sentence query. | |
| \def\?{?\spacefactor=3000 } | |
| 
 | |
| % @w prevents a word break.  Without the \leavevmode, @w at the | |
| % beginning of a paragraph, when TeX is still in vertical mode, would | |
| % produce a whole line of output instead of starting the paragraph. | |
| \def\w#1{\leavevmode\hbox{#1}} | |
| 
 | |
| % @group ... @end group forces ... to be all on one page, by enclosing | |
| % it in a TeX vbox.  We use \vtop instead of \vbox to construct the box | |
| % to keep its height that of a normal line.  According to the rules for | |
| % \topskip (p.114 of the TeXbook), the glue inserted is | |
| % max (\topskip - \ht (first item), 0).  If that height is large, | |
| % therefore, no glue is inserted, and the space between the headline and | |
| % the text is small, which looks bad. | |
| % | |
| \def\group{\begingroup | |
|   \ifnum\catcode13=\active \else | |
|     \errhelp = \groupinvalidhelp | |
|     \errmessage{@group invalid in context where filling is enabled}% | |
|   \fi | |
|   % | |
|   % The \vtop we start below produces a box with normal height and large | |
|   % depth; thus, TeX puts \baselineskip glue before it, and (when the | |
|   % next line of text is done) \lineskip glue after it.  (See p.82 of | |
|   % the TeXbook.)  Thus, space below is not quite equal to space | |
|   % above.  But it's pretty close. | |
|   \def\Egroup{% | |
|     \egroup           % End the \vtop. | |
|     \endgroup         % End the \group. | |
|   }% | |
|   % | |
|   \vtop\bgroup | |
|     % We have to put a strut on the last line in case the @group is in | |
|     % the midst of an example, rather than completely enclosing it. | |
|     % Otherwise, the interline space between the last line of the group | |
|     % and the first line afterwards is too small.  But we can't put the | |
|     % strut in \Egroup, since there it would be on a line by itself. | |
|     % Hence this just inserts a strut at the beginning of each line. | |
|     \everypar = {\strut}% | |
|     % | |
|     % Since we have a strut on every line, we don't need any of TeX's | |
|     % normal interline spacing. | |
|     \offinterlineskip | |
|     % | |
|     % OK, but now we have to do something about blank | |
|     % lines in the input in @example-like environments, which normally | |
|     % just turn into \lisppar, which will insert no space now that we've | |
|     % turned off the interline space.  Simplest is to make them be an | |
|     % empty paragraph. | |
|     \ifx\par\lisppar | |
|       \edef\par{\leavevmode \par}% | |
|       % | |
|       % Reset ^^M's definition to new definition of \par. | |
|       \obeylines | |
|     \fi | |
|     % | |
|     % Do @comment since we are called inside an environment such as | |
|     % @example, where each end-of-line in the input causes an | |
|     % end-of-line in the output.  We don't want the end-of-line after | |
|     % the `@group' to put extra space in the output.  Since @group | |
|     % should appear on a line by itself (according to the Texinfo | |
|     % manual), we don't worry about eating any user text. | |
|     \comment | |
| } | |
| % | |
| % TeX puts in an \escapechar (i.e., `@') at the beginning of the help | |
| % message, so this ends up printing `@group can only ...'. | |
| % | |
| \newhelp\groupinvalidhelp{% | |
| group can only be used in environments such as @example,^^J% | |
| where each line of input produces a line of output.} | |
| 
 | |
| % @need space-in-mils | |
| % forces a page break if there is not space-in-mils remaining. | |
|  | |
| \newdimen\mil  \mil=0.001in | |
| 
 | |
| \def\need{\parsearg\needx} | |
| 
 | |
| % Old definition--didn't work. | |
| %\def\needx #1{\par % | |
| %% This method tries to make TeX break the page naturally | |
| %% if the depth of the box does not fit. | |
| %{\baselineskip=0pt% | |
| %\vtop to #1\mil{\vfil}\kern -#1\mil\nobreak | |
| %\prevdepth=-1000pt | |
| %}} | |
|  | |
| \def\needx#1{% | |
|   % Ensure vertical mode, so we don't make a big box in the middle of a | |
|   % paragraph. | |
|   \par | |
|   % | |
|   % If the @need value is less than one line space, it's useless. | |
|   \dimen0 = #1\mil | |
|   \dimen2 = \ht\strutbox | |
|   \advance\dimen2 by \dp\strutbox | |
|   \ifdim\dimen0 > \dimen2 | |
|     % | |
|     % Do a \strut just to make the height of this box be normal, so the | |
|     % normal leading is inserted relative to the preceding line. | |
|     % And a page break here is fine. | |
|     \vtop to #1\mil{\strut\vfil}% | |
|     % | |
|     % TeX does not even consider page breaks if a penalty added to the | |
|     % main vertical list is 10000 or more.  But in order to see if the | |
|     % empty box we just added fits on the page, we must make it consider | |
|     % page breaks.  On the other hand, we don't want to actually break the | |
|     % page after the empty box.  So we use a penalty of 9999. | |
|     % | |
|     % There is an extremely small chance that TeX will actually break the | |
|     % page at this \penalty, if there are no other feasible breakpoints in | |
|     % sight.  (If the user is using lots of big @group commands, which | |
|     % almost-but-not-quite fill up a page, TeX will have a hard time doing | |
|     % good page breaking, for example.)  However, I could not construct an | |
|     % example where a page broke at this \penalty; if it happens in a real | |
|     % document, then we can reconsider our strategy. | |
|     \penalty9999 | |
|     % | |
|     % Back up by the size of the box, whether we did a page break or not. | |
|     \kern -#1\mil | |
|     % | |
|     % Do not allow a page break right after this kern. | |
|     \nobreak | |
|   \fi | |
| } | |
| 
 | |
| % @br   forces paragraph break | |
|  | |
| \let\br = \par | |
| 
 | |
| % @dots{} output an ellipsis using the current font. | |
| % We do .5em per period so that it has the same spacing in a typewriter | |
| % font as three actual period characters. | |
| % | |
| \def\dots{% | |
|   \leavevmode | |
|   \hbox to 1.5em{% | |
|     \hskip 0pt plus 0.25fil minus 0.25fil | |
|     .\hss.\hss.% | |
|     \hskip 0pt plus 0.5fil minus 0.5fil | |
|   }% | |
| } | |
| 
 | |
| % @enddots{} is an end-of-sentence ellipsis. | |
| % | |
| \def\enddots{% | |
|   \leavevmode | |
|   \hbox to 2em{% | |
|     \hskip 0pt plus 0.25fil minus 0.25fil | |
|     .\hss.\hss.\hss.% | |
|     \hskip 0pt plus 0.5fil minus 0.5fil | |
|   }% | |
|   \spacefactor=3000 | |
| } | |
| 
 | |
| 
 | |
| % @page    forces the start of a new page | |
| % | |
| \def\page{\par\vfill\supereject} | |
| 
 | |
| % @exdent text.... | |
| % outputs text on separate line in roman font, starting at standard page margin | |
|  | |
| % This records the amount of indent in the innermost environment. | |
| % That's how much \exdent should take out. | |
| \newskip\exdentamount | |
| 
 | |
| % This defn is used inside fill environments such as @defun. | |
| \def\exdent{\parsearg\exdentyyy} | |
| \def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}} | |
| 
 | |
| % This defn is used inside nofill environments such as @example. | |
| \def\nofillexdent{\parsearg\nofillexdentyyy} | |
| \def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount | |
| \leftline{\hskip\leftskip{\rm#1}}}} | |
| 
 | |
| % @inmargin{TEXT} puts TEXT in the margin next to the current paragraph. | |
|  | |
| \def\inmargin#1{% | |
| \strut\vadjust{\nobreak\kern-\strutdepth | |
|   \vtop to \strutdepth{\baselineskip\strutdepth\vss | |
|   \llap{\rightskip=\inmarginspacing \vbox{\noindent #1}}\null}}} | |
| \newskip\inmarginspacing \inmarginspacing=1cm | |
| \def\strutdepth{\dp\strutbox} | |
| 
 | |
| %\hbox{{\rm#1}}\hfil\break}} | |
|  | |
| % @include file    insert text of that file as input. | |
| % Allow normal characters that  we make active in the argument (a file name). | |
| \def\include{\begingroup | |
|   \catcode`\\=12 | |
|   \catcode`~=12 | |
|   \catcode`^=12 | |
|   \catcode`_=12 | |
|   \catcode`|=12 | |
|   \catcode`<=12 | |
|   \catcode`>=12 | |
|   \catcode`+=12 | |
|   \parsearg\includezzz} | |
| % Restore active chars for included file. | |
| \def\includezzz#1{\endgroup\begingroup | |
|   % Read the included file in a group so nested @include's work. | |
|   \def\thisfile{#1}% | |
|   \input\thisfile | |
| \endgroup} | |
| 
 | |
| \def\thisfile{} | |
| 
 | |
| % @center line   outputs that line, centered | |
|  | |
| \def\center{\parsearg\centerzzz} | |
| \def\centerzzz #1{{\advance\hsize by -\leftskip | |
| \advance\hsize by -\rightskip | |
| \centerline{#1}}} | |
| 
 | |
| % @sp n   outputs n lines of vertical space | |
|  | |
| \def\sp{\parsearg\spxxx} | |
| \def\spxxx #1{\vskip #1\baselineskip} | |
| 
 | |
| % @comment ...line which is ignored... | |
| % @c is the same as @comment | |
| % @ignore ... @end ignore  is another way to write a comment | |
|  | |
| \def\comment{\begingroup \catcode`\^^M=\other% | |
| \catcode`\@=\other \catcode`\{=\other \catcode`\}=\other% | |
| \commentxxx} | |
| {\catcode`\^^M=\other \gdef\commentxxx#1^^M{\endgroup}} | |
| 
 | |
| \let\c=\comment | |
| 
 | |
| % @paragraphindent NCHARS | |
| % We'll use ems for NCHARS, close enough. | |
| % We cannot implement @paragraphindent asis, though. | |
| %  | |
| \def\asisword{asis} % no translation, these are keywords | |
| \def\noneword{none} | |
| % | |
| \def\paragraphindent{\parsearg\doparagraphindent} | |
| \def\doparagraphindent#1{% | |
|   \def\temp{#1}% | |
|   \ifx\temp\asisword | |
|   \else | |
|     \ifx\temp\noneword | |
|       \defaultparindent = 0pt | |
|     \else | |
|       \defaultparindent = #1em | |
|     \fi | |
|   \fi | |
|   \parindent = \defaultparindent | |
| } | |
| 
 | |
| % @exampleindent NCHARS | |
| % We'll use ems for NCHARS like @paragraphindent. | |
| % It seems @exampleindent asis isn't necessary, but | |
| % I preserve it to make it similar to @paragraphindent. | |
| \def\exampleindent{\parsearg\doexampleindent} | |
| \def\doexampleindent#1{% | |
|   \def\temp{#1}% | |
|   \ifx\temp\asisword | |
|   \else | |
|     \ifx\temp\noneword | |
|       \lispnarrowing = 0pt | |
|     \else | |
|       \lispnarrowing = #1em | |
|     \fi | |
|   \fi | |
| } | |
| 
 | |
| % @asis just yields its argument.  Used with @table, for example. | |
| % | |
| \def\asis#1{#1} | |
| 
 | |
| % @math means output in math mode. | |
| % We don't use $'s directly in the definition of \math because control | |
| % sequences like \math are expanded when the toc file is written.  Then, | |
| % we read the toc file back, the $'s will be normal characters (as they | |
| % should be, according to the definition of Texinfo).  So we must use a | |
| % control sequence to switch into and out of math mode. | |
| % | |
| % This isn't quite enough for @math to work properly in indices, but it | |
| % seems unlikely it will ever be needed there. | |
| % | |
| \let\implicitmath = $ | |
| \def\math#1{\implicitmath #1\implicitmath} | |
|  | |
| % @bullet and @minus need the same treatment as @math, just above. | |
| \def\bullet{\implicitmath\ptexbullet\implicitmath} | |
| \def\minus{\implicitmath-\implicitmath} | |
|  | |
| % @refill is a no-op. | |
| \let\refill=\relax | |
|  | |
| % If working on a large document in chapters, it is convenient to | |
| % be able to disable indexing, cross-referencing, and contents, for test runs. | |
| % This is done with @novalidate (before @setfilename). | |
| % | |
| \newif\iflinks \linkstrue % by default we want the aux files. | |
| \let\novalidate = \linksfalse | |
|  | |
| % @setfilename is done at the beginning of every texinfo file. | |
| % So open here the files we need to have open while reading the input. | |
| % This makes it possible to make a .fmt file for texinfo. | |
| \def\setfilename{% | |
|    \iflinks | |
|      \readauxfile | |
|    \fi % \openindices needs to do some work in any case. | |
|    \openindices | |
|    \fixbackslash  % Turn off hack to swallow `\input texinfo'. | |
|    \global\let\setfilename=\comment % Ignore extra @setfilename cmds. | |
|    % | |
|    % If texinfo.cnf is present on the system, read it. | |
|    % Useful for site-wide @afourpaper, etc. | |
|    % Just to be on the safe side, close the input stream before the \input. | |
|    \openin 1 texinfo.cnf | |
|    \ifeof1 \let\temp=\relax \else \def\temp{\input texinfo.cnf }\fi | |
|    \closein1 | |
|    \temp | |
|    % | |
|    \comment % Ignore the actual filename. | |
| } | |
|  | |
| % Called from \setfilename. | |
| % | |
| \def\openindices{% | |
|   \newindex{cp}% | |
|   \newcodeindex{fn}% | |
|   \newcodeindex{vr}% | |
|   \newcodeindex{tp}% | |
|   \newcodeindex{ky}% | |
|   \newcodeindex{pg}% | |
| } | |
|  | |
| % @bye. | |
| \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend} | |
|  | |
|  | |
| \message{pdf,} | |
| % adobe `portable' document format | |
| \newcount\tempnum | |
| \newcount\lnkcount | |
| \newtoks\filename | |
| \newcount\filenamelength | |
| \newcount\pgn | |
| \newtoks\toksA | |
| \newtoks\toksB | |
| \newtoks\toksC | |
| \newtoks\toksD | |
| \newbox\boxA | |
| \newcount\countA | |
| \newif\ifpdf | |
| \newif\ifpdfmakepagedest | |
|  | |
| \ifx\pdfoutput\undefined | |
|   \pdffalse | |
|   \let\pdfmkdest = \gobble | |
|   \let\pdfurl = \gobble | |
|   \let\endlink = \relax | |
|   \let\linkcolor = \relax | |
|   \let\pdfmakeoutlines = \relax | |
| \else | |
|   \pdftrue | |
|   \pdfoutput = 1 | |
|   \input pdfcolor | |
|   \def\dopdfimage#1#2#3{% | |
|     \def\imagewidth{#2}% | |
|     \def\imageheight{#3}% | |
|     \ifnum\pdftexversion < 14 | |
|       \pdfimage | |
|     \else | |
|       \pdfximage | |
|     \fi | |
|       \ifx\empty\imagewidth\else width \imagewidth \fi | |
|       \ifx\empty\imageheight\else height \imageheight \fi | |
|       {#1.pdf}% | |
|     \ifnum\pdftexversion < 14 \else | |
|       \pdfrefximage \pdflastximage | |
|     \fi} | |
|   \def\pdfmkdest#1{\pdfdest name{#1@} xyz} | |
|   \def\pdfmkpgn#1{#1@} | |
|   \let\linkcolor = \Cyan | |
|   \def\endlink{\Black\pdfendlink} | |
|   % Adding outlines to PDF; macros for calculating structure of outlines | |
|   % come from Petr Olsak | |
|   \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0% | |
|     \else \csname#1\endcsname \fi} | |
|   \def\advancenumber#1{\tempnum=\expnumber{#1}\relax | |
|     \advance\tempnum by1 | |
|     \expandafter\xdef\csname#1\endcsname{\the\tempnum}} | |
|   \def\pdfmakeoutlines{{% | |
|     \openin 1 \jobname.toc | |
|     \ifeof 1\else\bgroup | |
|       \closein 1  | |
|       \indexnofonts | |
|       \def\tt{} | |
|       % thanh's hack / proper braces in bookmarks   | |
|       \edef\mylbrace{\iftrue \string{\else}\fi}\let\{=\mylbrace | |
|       \edef\myrbrace{\iffalse{\else\string}\fi}\let\}=\myrbrace | |
|       % | |
|       \def\chapentry ##1##2##3{} | |
|       \def\unnumbchapentry ##1##2{} | |
|       \def\secentry ##1##2##3##4{\advancenumber{chap##2}} | |
|       \def\unnumbsecentry ##1##2{} | |
|       \def\subsecentry ##1##2##3##4##5{\advancenumber{sec##2.##3}} | |
|       \def\unnumbsubsecentry ##1##2{} | |
|       \def\subsubsecentry ##1##2##3##4##5##6{\advancenumber{subsec##2.##3.##4}} | |
|       \def\unnumbsubsubsecentry ##1##2{} | |
|       \input \jobname.toc | |
|       \def\chapentry ##1##2##3{% | |
|         \pdfoutline goto name{\pdfmkpgn{##3}}count-\expnumber{chap##2}{##1}} | |
|       \def\unnumbchapentry ##1##2{% | |
|         \pdfoutline goto name{\pdfmkpgn{##2}}{##1}} | |
|       \def\secentry ##1##2##3##4{% | |
|         \pdfoutline goto name{\pdfmkpgn{##4}}count-\expnumber{sec##2.##3}{##1}} | |
|       \def\unnumbsecentry ##1##2{% | |
|         \pdfoutline goto name{\pdfmkpgn{##2}}{##1}} | |
|       \def\subsecentry ##1##2##3##4##5{% | |
|         \pdfoutline goto name{\pdfmkpgn{##5}}count-\expnumber{subsec##2.##3.##4}{##1}} | |
|       \def\unnumbsubsecentry ##1##2{% | |
|         \pdfoutline goto name{\pdfmkpgn{##2}}{##1}} | |
|       \def\subsubsecentry ##1##2##3##4##5##6{% | |
|         \pdfoutline goto name{\pdfmkpgn{##6}}{##1}} | |
|       \def\unnumbsubsubsecentry ##1##2{% | |
|         \pdfoutline goto name{\pdfmkpgn{##2}}{##1}} | |
|       \input \jobname.toc | |
|     \egroup\fi | |
|   }} | |
|   \def\makelinks #1,{% | |
|     \def\params{#1}\def\E{END}% | |
|     \ifx\params\E | |
|       \let\nextmakelinks=\relax | |
|     \else | |
|       \let\nextmakelinks=\makelinks | |
|       \ifnum\lnkcount>0,\fi | |
|       \picknum{#1}% | |
|       \startlink attr{/Border [0 0 0]}  | |
|         goto name{\pdfmkpgn{\the\pgn}}% | |
|       \linkcolor #1% | |
|       \advance\lnkcount by 1% | |
|       \endlink | |
|     \fi | |
|     \nextmakelinks | |
|   } | |
|   \def\picknum#1{\expandafter\pn#1} | |
|   \def\pn#1{% | |
|     \def\p{#1}% | |
|     \ifx\p\lbrace | |
|       \let\nextpn=\ppn | |
|     \else | |
|       \let\nextpn=\ppnn | |
|       \def\first{#1} | |
|     \fi | |
|     \nextpn | |
|   } | |
|   \def\ppn#1{\pgn=#1\gobble} | |
|   \def\ppnn{\pgn=\first} | |
|   \def\pdfmklnk#1{\lnkcount=0\makelinks #1,END,} | |
|   \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks} | |
|   \def\skipspaces#1{\def\PP{#1}\def\D{|}% | |
|     \ifx\PP\D\let\nextsp\relax | |
|     \else\let\nextsp\skipspaces | |
|       \ifx\p\space\else\addtokens{\filename}{\PP}% | |
|         \advance\filenamelength by 1 | |
|       \fi | |
|     \fi | |
|     \nextsp} | |
|   \def\getfilename#1{\filenamelength=0\expandafter\skipspaces#1|\relax} | |
|   \ifnum\pdftexversion < 14 | |
|     \let \startlink \pdfannotlink | |
|   \else | |
|     \let \startlink \pdfstartlink | |
|   \fi | |
|   \def\pdfurl#1{% | |
|     \begingroup | |
|       \normalturnoffactive\def\@{@}% | |
|       \leavevmode\Red | |
|       \startlink attr{/Border [0 0 0]}% | |
|         user{/Subtype /Link /A << /S /URI /URI (#1) >>}% | |
|         % #1 | |
|     \endgroup} | |
|   \def\pdfgettoks#1.{\setbox\boxA=\hbox{\toksA={#1.}\toksB={}\maketoks}} | |
|   \def\addtokens#1#2{\edef\addtoks{\noexpand#1={\the#1#2}}\addtoks} | |
|   \def\adn#1{\addtokens{\toksC}{#1}\global\countA=1\let\next=\maketoks} | |
|   \def\poptoks#1#2|ENDTOKS|{\let\first=#1\toksD={#1}\toksA={#2}} | |
|   \def\maketoks{% | |
|     \expandafter\poptoks\the\toksA|ENDTOKS| | |
|     \ifx\first0\adn0 | |
|     \else\ifx\first1\adn1 \else\ifx\first2\adn2 \else\ifx\first3\adn3 | |
|     \else\ifx\first4\adn4 \else\ifx\first5\adn5 \else\ifx\first6\adn6 | |
|     \else\ifx\first7\adn7 \else\ifx\first8\adn8 \else\ifx\first9\adn9  | |
|     \else | |
|       \ifnum0=\countA\else\makelink\fi | |
|       \ifx\first.\let\next=\done\else | |
|         \let\next=\maketoks | |
|         \addtokens{\toksB}{\the\toksD} | |
|         \ifx\first,\addtokens{\toksB}{\space}\fi | |
|       \fi | |
|     \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi | |
|     \next} | |
|   \def\makelink{\addtokens{\toksB}% | |
|     {\noexpand\pdflink{\the\toksC}}\toksC={}\global\countA=0} | |
|   \def\pdflink#1{% | |
|     \startlink attr{/Border [0 0 0]} goto name{\mkpgn{#1}} | |
|     \linkcolor #1\endlink} | |
|   \def\mkpgn#1{#1@}  | |
|   \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st} | |
| \fi % \ifx\pdfoutput | |
|  | |
|  | |
| \message{fonts,} | |
| % Font-change commands. | |
|  | |
| % Texinfo sort of supports the sans serif font style, which plain TeX does not. | |
| % So we set up a \sf analogous to plain's \rm, etc. | |
| \newfam\sffam | |
| \def\sf{\fam=\sffam \tensf} | |
| \let\li = \sf % Sometimes we call it \li, not \sf. | |
|  | |
| % We don't need math for this one. | |
| \def\ttsl{\tenttsl} | |
|  | |
| % Use Computer Modern fonts at \magstephalf (11pt). | |
| \newcount\mainmagstep | |
| \mainmagstep=\magstephalf | |
|  | |
| % Set the font macro #1 to the font named #2, adding on the | |
| % specified font prefix (normally `cm'). | |
| % #3 is the font's design size, #4 is a scale factor | |
| \def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4} | |
|  | |
| % Use cm as the default font prefix. | |
| % To specify the font prefix, you must define \fontprefix | |
| % before you read in texinfo.tex. | |
| \ifx\fontprefix\undefined | |
| \def\fontprefix{cm} | |
| \fi | |
| % Support font families that don't use the same naming scheme as CM. | |
| \def\rmshape{r} | |
| \def\rmbshape{bx}               %where the normal face is bold | |
| \def\bfshape{b} | |
| \def\bxshape{bx} | |
| \def\ttshape{tt} | |
| \def\ttbshape{tt} | |
| \def\ttslshape{sltt} | |
| \def\itshape{ti} | |
| \def\itbshape{bxti} | |
| \def\slshape{sl} | |
| \def\slbshape{bxsl} | |
| \def\sfshape{ss} | |
| \def\sfbshape{ss} | |
| \def\scshape{csc} | |
| \def\scbshape{csc} | |
|  | |
| \ifx\bigger\relax | |
| \let\mainmagstep=\magstep1 | |
| \setfont\textrm\rmshape{12}{1000} | |
| \setfont\texttt\ttshape{12}{1000} | |
| \else | |
| \setfont\textrm\rmshape{10}{\mainmagstep} | |
| \setfont\texttt\ttshape{10}{\mainmagstep} | |
| \fi | |
| % Instead of cmb10, you many want to use cmbx10. | |
| % cmbx10 is a prettier font on its own, but cmb10 | |
| % looks better when embedded in a line with cmr10. | |
| \setfont\textbf\bfshape{10}{\mainmagstep} | |
| \setfont\textit\itshape{10}{\mainmagstep} | |
| \setfont\textsl\slshape{10}{\mainmagstep} | |
| \setfont\textsf\sfshape{10}{\mainmagstep} | |
| \setfont\textsc\scshape{10}{\mainmagstep} | |
| \setfont\textttsl\ttslshape{10}{\mainmagstep} | |
| \font\texti=cmmi10 scaled \mainmagstep | |
| \font\textsy=cmsy10 scaled \mainmagstep | |
|  | |
| % A few fonts for @defun, etc. | |
| \setfont\defbf\bxshape{10}{\magstep1} %was 1314 | |
| \setfont\deftt\ttshape{10}{\magstep1} | |
| \def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf} | |
|  | |
| % Fonts for indices, footnotes, small examples (9pt). | |
| \setfont\smallrm\rmshape{9}{1000} | |
| \setfont\smalltt\ttshape{9}{1000} | |
| \setfont\smallbf\bfshape{10}{900} | |
| \setfont\smallit\itshape{9}{1000} | |
| \setfont\smallsl\slshape{9}{1000} | |
| \setfont\smallsf\sfshape{9}{1000} | |
| \setfont\smallsc\scshape{10}{900} | |
| \setfont\smallttsl\ttslshape{10}{900} | |
| \font\smalli=cmmi9 | |
| \font\smallsy=cmsy9 | |
|  | |
| % Fonts for title page: | |
| \setfont\titlerm\rmbshape{12}{\magstep3} | |
| \setfont\titleit\itbshape{10}{\magstep4} | |
| \setfont\titlesl\slbshape{10}{\magstep4} | |
| \setfont\titlett\ttbshape{12}{\magstep3} | |
| \setfont\titlettsl\ttslshape{10}{\magstep4} | |
| \setfont\titlesf\sfbshape{17}{\magstep1} | |
| \let\titlebf=\titlerm | |
| \setfont\titlesc\scbshape{10}{\magstep4} | |
| \font\titlei=cmmi12 scaled \magstep3 | |
| \font\titlesy=cmsy10 scaled \magstep4 | |
| \def\authorrm{\secrm} | |
|  | |
| % Chapter (and unnumbered) fonts (17.28pt). | |
| \setfont\chaprm\rmbshape{12}{\magstep2} | |
| \setfont\chapit\itbshape{10}{\magstep3} | |
| \setfont\chapsl\slbshape{10}{\magstep3} | |
| \setfont\chaptt\ttbshape{12}{\magstep2} | |
| \setfont\chapttsl\ttslshape{10}{\magstep3} | |
| \setfont\chapsf\sfbshape{17}{1000} | |
| \let\chapbf=\chaprm | |
| \setfont\chapsc\scbshape{10}{\magstep3} | |
| \font\chapi=cmmi12 scaled \magstep2 | |
| \font\chapsy=cmsy10 scaled \magstep3 | |
|  | |
| % Section fonts (14.4pt). | |
| \setfont\secrm\rmbshape{12}{\magstep1} | |
| \setfont\secit\itbshape{10}{\magstep2} | |
| \setfont\secsl\slbshape{10}{\magstep2} | |
| \setfont\sectt\ttbshape{12}{\magstep1} | |
| \setfont\secttsl\ttslshape{10}{\magstep2} | |
| \setfont\secsf\sfbshape{12}{\magstep1} | |
| \let\secbf\secrm | |
| \setfont\secsc\scbshape{10}{\magstep2} | |
| \font\seci=cmmi12 scaled \magstep1 | |
| \font\secsy=cmsy10 scaled \magstep2 | |
|  | |
| % \setfont\ssecrm\bxshape{10}{\magstep1}    % This size an font looked bad. | |
| % \setfont\ssecit\itshape{10}{\magstep1}    % The letters were too crowded. | |
| % \setfont\ssecsl\slshape{10}{\magstep1} | |
| % \setfont\ssectt\ttshape{10}{\magstep1} | |
| % \setfont\ssecsf\sfshape{10}{\magstep1} | |
|  | |
| %\setfont\ssecrm\bfshape{10}{1315}      % Note the use of cmb rather than cmbx. | |
| %\setfont\ssecit\itshape{10}{1315}      % Also, the size is a little larger than | |
| %\setfont\ssecsl\slshape{10}{1315}      % being scaled magstep1. | |
| %\setfont\ssectt\ttshape{10}{1315} | |
| %\setfont\ssecsf\sfshape{10}{1315} | |
|  | |
| %\let\ssecbf=\ssecrm | |
|  | |
| % Subsection fonts (13.15pt). | |
| \setfont\ssecrm\rmbshape{12}{\magstephalf} | |
| \setfont\ssecit\itbshape{10}{1315} | |
| \setfont\ssecsl\slbshape{10}{1315} | |
| \setfont\ssectt\ttbshape{12}{\magstephalf} | |
| \setfont\ssecttsl\ttslshape{10}{1315} | |
| \setfont\ssecsf\sfbshape{12}{\magstephalf} | |
| \let\ssecbf\ssecrm | |
| \setfont\ssecsc\scbshape{10}{\magstep1} | |
| \font\sseci=cmmi12 scaled \magstephalf | |
| \font\ssecsy=cmsy10 scaled 1315 | |
| % The smallcaps and symbol fonts should actually be scaled \magstep1.5, | |
| % but that is not a standard magnification. | |
|  | |
| % In order for the font changes to affect most math symbols and letters, | |
| % we have to define the \textfont of the standard families.  Since | |
| % texinfo doesn't allow for producing subscripts and superscripts, we | |
| % don't bother to reset \scriptfont and \scriptscriptfont (which would | |
| % also require loading a lot more fonts). | |
| % | |
| \def\resetmathfonts{% | |
|   \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy | |
|   \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf | |
|   \textfont\ttfam = \tentt \textfont\sffam = \tensf | |
| } | |
|  | |
|  | |
| % The font-changing commands redefine the meanings of \tenSTYLE, instead | |
| % of just \STYLE.  We do this so that font changes will continue to work | |
| % in math mode, where it is the current \fam that is relevant in most | |
| % cases, not the current font.  Plain TeX does \def\bf{\fam=\bffam | |
| % \tenbf}, for example.  By redefining \tenbf, we obviate the need to | |
| % redefine \bf itself. | |
| \def\textfonts{% | |
|   \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl | |
|   \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc | |
|   \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy \let\tenttsl=\textttsl | |
|   \resetmathfonts} | |
| \def\titlefonts{% | |
|   \let\tenrm=\titlerm \let\tenit=\titleit \let\tensl=\titlesl | |
|   \let\tenbf=\titlebf \let\tentt=\titlett \let\smallcaps=\titlesc | |
|   \let\tensf=\titlesf \let\teni=\titlei \let\tensy=\titlesy | |
|   \let\tenttsl=\titlettsl | |
|   \resetmathfonts \setleading{25pt}} | |
| \def\titlefont#1{{\titlefonts\rm #1}} | |
| \def\chapfonts{% | |
|   \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl | |
|   \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc | |
|   \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl | |
|   \resetmathfonts \setleading{19pt}} | |
| \def\secfonts{% | |
|   \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl | |
|   \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc | |
|   \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy \let\tenttsl=\secttsl | |
|   \resetmathfonts \setleading{16pt}} | |
| \def\subsecfonts{% | |
|   \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl | |
|   \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc | |
|   \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy \let\tenttsl=\ssecttsl | |
|   \resetmathfonts \setleading{15pt}} | |
| \let\subsubsecfonts = \subsecfonts % Maybe make sssec fonts scaled magstephalf? | |
| \def\smallfonts{% | |
|   \let\tenrm=\smallrm \let\tenit=\smallit \let\tensl=\smallsl | |
|   \let\tenbf=\smallbf \let\tentt=\smalltt \let\smallcaps=\smallsc | |
|   \let\tensf=\smallsf \let\teni=\smalli \let\tensy=\smallsy | |
|   \let\tenttsl=\smallttsl | |
|   \resetmathfonts \setleading{11pt}} | |
|  | |
| % Set up the default fonts, so we can use them for creating boxes. | |
| % | |
| \textfonts | |
|  | |
| % Define these so they can be easily changed for other fonts. | |
| \def\angleleft{$\langle$} | |
| \def\angleright{$\rangle$} | |
|  | |
| % Count depth in font-changes, for error checks | |
| \newcount\fontdepth \fontdepth=0 | |
|  | |
| % Fonts for short table of contents. | |
| \setfont\shortcontrm\rmshape{12}{1000} | |
| \setfont\shortcontbf\bxshape{12}{1000} | |
| \setfont\shortcontsl\slshape{12}{1000} | |
|  | |
| %% Add scribe-like font environments, plus @l for inline lisp (usually sans | |
| %% serif) and @ii for TeX italic | |
|  | |
| % \smartitalic{ARG} outputs arg in italics, followed by an italic correction | |
| % unless the following character is such as not to need one. | |
| \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi} | |
| \def\smartslanted#1{{\sl #1}\futurelet\next\smartitalicx} | |
| \def\smartitalic#1{{\it #1}\futurelet\next\smartitalicx} | |
|  | |
| \let\i=\smartitalic | |
| \let\var=\smartslanted | |
| \let\dfn=\smartslanted | |
| \let\emph=\smartitalic | |
| \let\cite=\smartslanted | |
|  | |
| \def\b#1{{\bf #1}} | |
| \let\strong=\b | |
|  | |
| % We can't just use \exhyphenpenalty, because that only has effect at | |
| % the end of a paragraph.  Restore normal hyphenation at the end of the | |
| % group within which \nohyphenation is presumably called. | |
| % | |
| \def\nohyphenation{\hyphenchar\font = -1  \aftergroup\restorehyphenation} | |
| \def\restorehyphenation{\hyphenchar\font = `- } | |
|  | |
| \def\t#1{% | |
|   {\tt \rawbackslash \frenchspacing #1}% | |
|   \null | |
| } | |
| \let\ttfont=\t | |
| \def\samp#1{`\tclose{#1}'\null} | |
| \setfont\keyrm\rmshape{8}{1000} | |
| \font\keysy=cmsy9 | |
| \def\key#1{{\keyrm\textfont2=\keysy \leavevmode\hbox{% | |
|   \raise0.4pt\hbox{\angleleft}\kern-.08em\vtop{% | |
|     \vbox{\hrule\kern-0.4pt | |
|      \hbox{\raise0.4pt\hbox{\vphantom{\angleleft}}#1}}% | |
|     \kern-0.4pt\hrule}% | |
|   \kern-.06em\raise0.4pt\hbox{\angleright}}}} | |
| % The old definition, with no lozenge: | |
| %\def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null} | |
| \def\ctrl #1{{\tt \rawbackslash \hat}#1} | |
|  | |
| % @file, @option are the same as @samp. | |
| \let\file=\samp | |
| \let\option=\samp | |
|  | |
| % @code is a modification of @t, | |
| % which makes spaces the same size as normal in the surrounding text. | |
| \def\tclose#1{% | |
|   {% | |
|     % Change normal interword space to be same as for the current font. | |
|     \spaceskip = \fontdimen2\font | |
|     % | |
|     % Switch to typewriter. | |
|     \tt | |
|     % | |
|     % But `\ ' produces the large typewriter interword space. | |
|     \def\ {{\spaceskip = 0pt{} }}% | |
|     % | |
|     % Turn off hyphenation. | |
|     \nohyphenation | |
|     % | |
|     \rawbackslash | |
|     \frenchspacing | |
|     #1% | |
|   }% | |
|   \null | |
| } | |
|  | |
| % We *must* turn on hyphenation at `-' and `_' in \code. | |
| % Otherwise, it is too hard to avoid overfull hboxes | |
| % in the Emacs manual, the Library manual, etc. | |
|  | |
| % Unfortunately, TeX uses one parameter (\hyphenchar) to control | |
| % both hyphenation at - and hyphenation within words. | |
| % We must therefore turn them both off (\tclose does that) | |
| % and arrange explicitly to hyphenate at a dash. | |
| %  -- rms. | |
| { | |
|   \catcode`\-=\active | |
|   \catcode`\_=\active | |
|   % | |
|   \global\def\code{\begingroup | |
|     \catcode`\-=\active \let-\codedash | |
|     \catcode`\_=\active \let_\codeunder | |
|     \codex | |
|   } | |
|   % | |
|   % If we end up with any active - characters when handling the index, | |
|   % just treat them as a normal -. | |
|   \global\def\indexbreaks{\catcode`\-=\active \let-\realdash} | |
| } | |
|  | |
| \def\realdash{-} | |
| \def\codedash{-\discretionary{}{}{}} | |
| \def\codeunder{\ifusingtt{\normalunderscore\discretionary{}{}{}}{\_}} | |
| \def\codex #1{\tclose{#1}\endgroup} | |
|  | |
| %\let\exp=\tclose  %Was temporary | |
|  | |
| % @kbd is like @code, except that if the argument is just one @key command, | |
| % then @kbd has no effect. | |
|  | |
| % @kbdinputstyle -- arg is `distinct' (@kbd uses slanted tty font always), | |
| %   `example' (@kbd uses ttsl only inside of @example and friends), | |
| %   or `code' (@kbd uses normal tty font always). | |
| \def\kbdinputstyle{\parsearg\kbdinputstylexxx} | |
| \def\kbdinputstylexxx#1{% | |
|   \def\arg{#1}% | |
|   \ifx\arg\worddistinct | |
|     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl}% | |
|   \else\ifx\arg\wordexample | |
|     \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\tt}% | |
|   \else\ifx\arg\wordcode | |
|     \gdef\kbdexamplefont{\tt}\gdef\kbdfont{\tt}% | |
|   \fi\fi\fi | |
| } | |
| \def\worddistinct{distinct} | |
| \def\wordexample{example} | |
| \def\wordcode{code} | |
|  | |
| % Default is kbdinputdistinct.  (Too much of a hassle to call the macro, | |
| % the catcodes are wrong for parsearg to work.) | |
| \gdef\kbdexamplefont{\ttsl}\gdef\kbdfont{\ttsl} | |
|  | |
| \def\xkey{\key} | |
| \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}% | |
| \ifx\one\xkey\ifx\threex\three \key{#2}% | |
| \else{\tclose{\kbdfont\look}}\fi | |
| \else{\tclose{\kbdfont\look}}\fi} | |
|  | |
| % For @url, @env, @command quotes seem unnecessary, so use \code. | |
| \let\url=\code | |
| \let\env=\code | |
| \let\command=\code | |
|  | |
| % @uref (abbreviation for `urlref') takes an optional (comma-separated) | |
| % second argument specifying the text to display and an optional third | |
| % arg as text to display instead of (rather than in addition to) the url | |
| % itself.  First (mandatory) arg is the url.  Perhaps eventually put in | |
| % a hypertex \special here. | |
| % | |
| \def\uref#1{\douref #1,,,\finish} | |
| \def\douref#1,#2,#3,#4\finish{\begingroup | |
|   \unsepspaces | |
|   \pdfurl{#1}% | |
|   \setbox0 = \hbox{\ignorespaces #3}% | |
|   \ifdim\wd0 > 0pt | |
|     \unhbox0 % third arg given, show only that | |
|   \else | |
|     \setbox0 = \hbox{\ignorespaces #2}% | |
|     \ifdim\wd0 > 0pt | |
|       \ifpdf | |
|         \unhbox0             % PDF: 2nd arg given, show only it | |
|       \else | |
|         \unhbox0\ (\code{#1})% DVI: 2nd arg given, show both it and url | |
|       \fi | |
|     \else | |
|       \code{#1}% only url given, so show it | |
|     \fi | |
|   \fi | |
|   \endlink | |
| \endgroup} | |
|  | |
| % rms does not like angle brackets --karl, 17may97. | |
| % So now @email is just like @uref, unless we are pdf. | |
| %  | |
| %\def\email#1{\angleleft{\tt #1}\angleright} | |
| \ifpdf | |
|   \def\email#1{\doemail#1,,\finish} | |
|   \def\doemail#1,#2,#3\finish{\begingroup | |
|     \unsepspaces | |
|     \pdfurl{mailto:#1}% | |
|     \setbox0 = \hbox{\ignorespaces #2}% | |
|     \ifdim\wd0>0pt\unhbox0\else\code{#1}\fi | |
|     \endlink | |
|   \endgroup} | |
| \else | |
|   \let\email=\uref | |
| \fi | |
|  | |
| % Check if we are currently using a typewriter font.  Since all the | |
| % Computer Modern typewriter fonts have zero interword stretch (and | |
| % shrink), and it is reasonable to expect all typewriter fonts to have | |
| % this property, we can check that font parameter. | |
| % | |
| \def\ifmonospace{\ifdim\fontdimen3\font=0pt } | |
|  | |
| % Typeset a dimension, e.g., `in' or `pt'.  The only reason for the | |
| % argument is to make the input look right: @dmn{pt} instead of @dmn{}pt. | |
| % | |
| \def\dmn#1{\thinspace #1} | |
|  | |
| \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par} | |
|  | |
| % @l was never documented to mean ``switch to the Lisp font'', | |
| % and it is not used as such in any manual I can find.  We need it for | |
| % Polish suppressed-l.  --karl, 22sep96. | |
| %\def\l#1{{\li #1}\null} | |
|  | |
| % Explicit font changes: @r, @sc, undocumented @ii. | |
| \def\r#1{{\rm #1}}              % roman font | |
| \def\sc#1{{\smallcaps#1}}       % smallcaps font | |
| \def\ii#1{{\it #1}}             % italic font | |
|  | |
| % @acronym downcases the argument and prints in smallcaps. | |
| \def\acronym#1{{\smallcaps \lowercase{#1}}} | |
|  | |
| % @pounds{} is a sterling sign. | |
| \def\pounds{{\it\$}} | |
|  | |
|  | |
| \message{page headings,} | |
|  | |
| \newskip\titlepagetopglue \titlepagetopglue = 1.5in | |
| \newskip\titlepagebottomglue \titlepagebottomglue = 2pc | |
|  | |
| % First the title page.  Must do @settitle before @titlepage. | |
| \newif\ifseenauthor | |
| \newif\iffinishedtitlepage | |
|  | |
| % Do an implicit @contents or @shortcontents after @end titlepage if the | |
| % user says @setcontentsaftertitlepage or @setshortcontentsaftertitlepage. | |
| % | |
| \newif\ifsetcontentsaftertitlepage | |
|  \let\setcontentsaftertitlepage = \setcontentsaftertitlepagetrue | |
| \newif\ifsetshortcontentsaftertitlepage | |
|  \let\setshortcontentsaftertitlepage = \setshortcontentsaftertitlepagetrue | |
|  | |
| \def\shorttitlepage{\parsearg\shorttitlepagezzz} | |
| \def\shorttitlepagezzz #1{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}% | |
|         \endgroup\page\hbox{}\page} | |
|  | |
| \def\titlepage{\begingroup \parindent=0pt \textfonts | |
|    \let\subtitlerm=\tenrm | |
|    \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}% | |
|    % | |
|    \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}% | |
|    % | |
|    % Leave some space at the very top of the page. | |
|    \vglue\titlepagetopglue | |
|    % | |
|    % Now you can print the title using @title. | |
|    \def\title{\parsearg\titlezzz}% | |
|    \def\titlezzz##1{\leftline{\titlefonts\rm ##1} | |
|                     % print a rule at the page bottom also. | |
|                     \finishedtitlepagefalse | |
|                     \vskip4pt \hrule height 4pt width \hsize \vskip4pt}% | |
|    % No rule at page bottom unless we print one at the top with @title. | |
|    \finishedtitlepagetrue | |
|    % | |
|    % Now you can put text using @subtitle. | |
|    \def\subtitle{\parsearg\subtitlezzz}% | |
|    \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}% | |
|    % | |
|    % @author should come last, but may come many times. | |
|    \def\author{\parsearg\authorzzz}% | |
|    \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi | |
|       {\authorfont \leftline{##1}}}% | |
|    % | |
|    % Most title ``pages'' are actually two pages long, with space | |
|    % at the top of the second.  We don't want the ragged left on the second. | |
|    \let\oldpage = \page | |
|    \def\page{% | |
|       \iffinishedtitlepage\else | |
|          \finishtitlepage | |
|       \fi | |
|       \oldpage | |
|       \let\page = \oldpage | |
|       \hbox{}}% | |
| %   \def\page{\oldpage \hbox{}} | |
| } | |
|  | |
| \def\Etitlepage{% | |
|    \iffinishedtitlepage\else | |
|       \finishtitlepage | |
|    \fi | |
|    % It is important to do the page break before ending the group, | |
|    % because the headline and footline are only empty inside the group. | |
|    % If we use the new definition of \page, we always get a blank page | |
|    % after the title page, which we certainly don't want. | |
|    \oldpage | |
|    \endgroup | |
|    % | |
|    % If they want short, they certainly want long too. | |
|    \ifsetshortcontentsaftertitlepage | |
|      \shortcontents | |
|      \contents | |
|      \global\let\shortcontents = \relax | |
|      \global\let\contents = \relax | |
|    \fi | |
|    % | |
|    \ifsetcontentsaftertitlepage | |
|      \contents | |
|      \global\let\contents = \relax | |
|      \global\let\shortcontents = \relax | |
|    \fi | |
|    % | |
|    \ifpdf \pdfmakepagedesttrue \fi | |
|    % | |
|    \HEADINGSon | |
| } | |
|  | |
| \def\finishtitlepage{% | |
|    \vskip4pt \hrule height 2pt width \hsize | |
|    \vskip\titlepagebottomglue | |
|    \finishedtitlepagetrue | |
| } | |
|  | |
| %%% Set up page headings and footings. | |
|  | |
| \let\thispage=\folio | |
|  | |
| \newtoks\evenheadline    % headline on even pages | |
| \newtoks\oddheadline     % headline on odd pages | |
| \newtoks\evenfootline    % footline on even pages | |
| \newtoks\oddfootline     % footline on odd pages | |
|  | |
| % Now make Tex use those variables | |
| \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline | |
|                             \else \the\evenheadline \fi}} | |
| \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline | |
|                             \else \the\evenfootline \fi}\HEADINGShook} | |
| \let\HEADINGShook=\relax | |
|  | |
| % Commands to set those variables. | |
| % For example, this is what  @headings on  does | |
| % @evenheading @thistitle|@thispage|@thischapter | |
| % @oddheading @thischapter|@thispage|@thistitle | |
| % @evenfooting @thisfile|| | |
| % @oddfooting ||@thisfile | |
|  | |
| \def\evenheading{\parsearg\evenheadingxxx} | |
| \def\oddheading{\parsearg\oddheadingxxx} | |
| \def\everyheading{\parsearg\everyheadingxxx} | |
|  | |
| \def\evenfooting{\parsearg\evenfootingxxx} | |
| \def\oddfooting{\parsearg\oddfootingxxx} | |
| \def\everyfooting{\parsearg\everyfootingxxx} | |
|  | |
| {\catcode`\@=0 % | |
|  | |
| \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish} | |
| \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{% | |
| \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} | |
|  | |
| \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish} | |
| \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{% | |
| \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} | |
|  | |
| \gdef\everyheadingxxx#1{\oddheadingxxx{#1}\evenheadingxxx{#1}}% | |
|  | |
| \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish} | |
| \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{% | |
| \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}} | |
|  | |
| \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish} | |
| \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{% | |
|   \global\oddfootline = {\rlap{\centerline{#2}}\line{#1\hfil#3}}% | |
|   % | |
|   % Leave some space for the footline.  Hopefully ok to assume | |
|   % @evenfooting will not be used by itself. | |
|   \global\advance\pageheight by -\baselineskip | |
|   \global\advance\vsize by -\baselineskip | |
| } | |
|  | |
| \gdef\everyfootingxxx#1{\oddfootingxxx{#1}\evenfootingxxx{#1}} | |
| % | |
| }% unbind the catcode of @. | |
|  | |
| % @headings double      turns headings on for double-sided printing. | |
| % @headings single      turns headings on for single-sided printing. | |
| % @headings off         turns them off. | |
| % @headings on          same as @headings double, retained for compatibility. | |
| % @headings after       turns on double-sided headings after this page. | |
| % @headings doubleafter turns on double-sided headings after this page. | |
| % @headings singleafter turns on single-sided headings after this page. | |
| % By default, they are off at the start of a document, | |
| % and turned `on' after @end titlepage. | |
|  | |
| \def\headings #1 {\csname HEADINGS#1\endcsname} | |
|  | |
| \def\HEADINGSoff{ | |
| \global\evenheadline={\hfil} \global\evenfootline={\hfil} | |
| \global\oddheadline={\hfil} \global\oddfootline={\hfil}} | |
| \HEADINGSoff | |
| % When we turn headings on, set the page number to 1. | |
| % For double-sided printing, put current file name in lower left corner, | |
| % chapter name on inside top of right hand pages, document | |
| % title on inside top of left hand pages, and page numbers on outside top | |
| % edge of all pages. | |
| \def\HEADINGSdouble{ | |
| \global\pageno=1 | |
| \global\evenfootline={\hfil} | |
| \global\oddfootline={\hfil} | |
| \global\evenheadline={\line{\folio\hfil\thistitle}} | |
| \global\oddheadline={\line{\thischapter\hfil\folio}} | |
| \global\let\contentsalignmacro = \chapoddpage | |
| } | |
| \let\contentsalignmacro = \chappager | |
|  | |
| % For single-sided printing, chapter title goes across top left of page, | |
| % page number on top right. | |
| \def\HEADINGSsingle{ | |
| \global\pageno=1 | |
| \global\evenfootline={\hfil} | |
| \global\oddfootline={\hfil} | |
| \global\evenheadline={\line{\thischapter\hfil\folio}} | |
| \global\oddheadline={\line{\thischapter\hfil\folio}} | |
| \global\let\contentsalignmacro = \chappager | |
| } | |
| \def\HEADINGSon{\HEADINGSdouble} | |
|  | |
| \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex} | |
| \let\HEADINGSdoubleafter=\HEADINGSafter | |
| \def\HEADINGSdoublex{% | |
| \global\evenfootline={\hfil} | |
| \global\oddfootline={\hfil} | |
| \global\evenheadline={\line{\folio\hfil\thistitle}} | |
| \global\oddheadline={\line{\thischapter\hfil\folio}} | |
| \global\let\contentsalignmacro = \chapoddpage | |
| } | |
|  | |
| \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex} | |
| \def\HEADINGSsinglex{% | |
| \global\evenfootline={\hfil} | |
| \global\oddfootline={\hfil} | |
| \global\evenheadline={\line{\thischapter\hfil\folio}} | |
| \global\oddheadline={\line{\thischapter\hfil\folio}} | |
| \global\let\contentsalignmacro = \chappager | |
| } | |
|  | |
| % Subroutines used in generating headings | |
| % Produces Day Month Year style of output. | |
| \def\today{% | |
|   \number\day\space | |
|   \ifcase\month | |
|   \or\putwordMJan\or\putwordMFeb\or\putwordMMar\or\putwordMApr | |
|   \or\putwordMMay\or\putwordMJun\or\putwordMJul\or\putwordMAug | |
|   \or\putwordMSep\or\putwordMOct\or\putwordMNov\or\putwordMDec | |
|   \fi | |
|   \space\number\year} | |
|  | |
| % @settitle line...  specifies the title of the document, for headings. | |
| % It generates no output of its own. | |
| \def\thistitle{\putwordNoTitle} | |
| \def\settitle{\parsearg\settitlezzz} | |
| \def\settitlezzz #1{\gdef\thistitle{#1}} | |
|  | |
|  | |
| \message{tables,} | |
| % Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x). | |
|  | |
| % default indentation of table text | |
| \newdimen\tableindent \tableindent=.8in | |
| % default indentation of @itemize and @enumerate text | |
| \newdimen\itemindent  \itemindent=.3in | |
| % margin between end of table item and start of table text. | |
| \newdimen\itemmargin  \itemmargin=.1in | |
|  | |
| % used internally for \itemindent minus \itemmargin | |
| \newdimen\itemmax | |
|  | |
| % Note @table, @vtable, and @vtable define @item, @itemx, etc., with | |
| % these defs. | |
| % They also define \itemindex | |
| % to index the item name in whatever manner is desired (perhaps none). | |
|  | |
| \newif\ifitemxneedsnegativevskip | |
|  | |
| \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi} | |
|  | |
| \def\internalBitem{\smallbreak \parsearg\itemzzz} | |
| \def\internalBitemx{\itemxpar \parsearg\itemzzz} | |
|  | |
| \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz} | |
| \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \itemxpar \parsearg\xitemzzz} | |
|  | |
| \def\internalBkitem{\smallbreak \parsearg\kitemzzz} | |
| \def\internalBkitemx{\itemxpar \parsearg\kitemzzz} | |
|  | |
| \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}% | |
|                  \itemzzz {#1}} | |
|  | |
| \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}% | |
|                  \itemzzz {#1}} | |
|  | |
| \def\itemzzz #1{\begingroup % | |
|   \advance\hsize by -\rightskip | |
|   \advance\hsize by -\tableindent | |
|   \setbox0=\hbox{\itemfont{#1}}% | |
|   \itemindex{#1}% | |
|   \nobreak % This prevents a break before @itemx. | |
|   % | |
|   % If the item text does not fit in the space we have, put it on a line | |
|   % by itself, and do not allow a page break either before or after that | |
|   % line.  We do not start a paragraph here because then if the next | |
|   % command is, e.g., @kindex, the whatsit would get put into the | |
|   % horizontal list on a line by itself, resulting in extra blank space. | |
|   \ifdim \wd0>\itemmax | |
|     % | |
|     % Make this a paragraph so we get the \parskip glue and wrapping, | |
|     % but leave it ragged-right. | |
|     \begingroup | |
|       \advance\leftskip by-\tableindent | |
|       \advance\hsize by\tableindent | |
|       \advance\rightskip by0pt plus1fil | |
|       \leavevmode\unhbox0\par | |
|     \endgroup | |
|     % | |
|     % We're going to be starting a paragraph, but we don't want the | |
|     % \parskip glue -- logically it's part of the @item we just started. | |
|     \nobreak \vskip-\parskip | |
|     % | |
|     % Stop a page break at the \parskip glue coming up.  Unfortunately | |
|     % we can't prevent a possible page break at the following | |
|     % \baselineskip glue. | |
|     \nobreak | |
|     \endgroup | |
|     \itemxneedsnegativevskipfalse | |
|   \else | |
|     % The item text fits into the space.  Start a paragraph, so that the | |
|     % following text (if any) will end up on the same line. | |
|     \noindent | |
|     % Do this with kerns and \unhbox so that if there is a footnote in | |
|     % the item text, it can migrate to the main vertical list and | |
|     % eventually be printed. | |
|     \nobreak\kern-\tableindent | |
|     \dimen0 = \itemmax  \advance\dimen0 by \itemmargin \advance\dimen0 by -\wd0 | |
|     \unhbox0 | |
|     \nobreak\kern\dimen0 | |
|     \endgroup | |
|     \itemxneedsnegativevskiptrue | |
|   \fi | |
| } | |
|  | |
| \def\item{\errmessage{@item while not in a table}} | |
| \def\itemx{\errmessage{@itemx while not in a table}} | |
| \def\kitem{\errmessage{@kitem while not in a table}} | |
| \def\kitemx{\errmessage{@kitemx while not in a table}} | |
| \def\xitem{\errmessage{@xitem while not in a table}} | |
| \def\xitemx{\errmessage{@xitemx while not in a table}} | |
|  | |
| % Contains a kludge to get @end[description] to work. | |
| \def\description{\tablez{\dontindex}{1}{}{}{}{}} | |
|  | |
| % @table, @ftable, @vtable. | |
| \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex} | |
| {\obeylines\obeyspaces% | |
| \gdef\tablex #1^^M{% | |
| \tabley\dontindex#1        \endtabley}} | |
|  | |
| \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex} | |
| {\obeylines\obeyspaces% | |
| \gdef\ftablex #1^^M{% | |
| \tabley\fnitemindex#1        \endtabley | |
| \def\Eftable{\endgraf\afterenvbreak\endgroup}% | |
| \let\Etable=\relax}} | |
|  | |
| \def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex} | |
| {\obeylines\obeyspaces% | |
| \gdef\vtablex #1^^M{% | |
| \tabley\vritemindex#1        \endtabley | |
| \def\Evtable{\endgraf\afterenvbreak\endgroup}% | |
| \let\Etable=\relax}} | |
|  | |
| \def\dontindex #1{} | |
| \def\fnitemindex #1{\doind {fn}{\code{#1}}}% | |
| \def\vritemindex #1{\doind {vr}{\code{#1}}}% | |
|  | |
| {\obeyspaces % | |
| \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup% | |
| \tablez{#1}{#2}{#3}{#4}{#5}{#6}}} | |
|  | |
| \def\tablez #1#2#3#4#5#6{% | |
| \aboveenvbreak % | |
| \begingroup % | |
| \def\Edescription{\Etable}% Necessary kludge. | |
| \let\itemindex=#1% | |
| \ifnum 0#3>0 \advance \leftskip by #3\mil \fi % | |
| \ifnum 0#4>0 \tableindent=#4\mil \fi % | |
| \ifnum 0#5>0 \advance \rightskip by #5\mil \fi % | |
| \def\itemfont{#2}% | |
| \itemmax=\tableindent % | |
| \advance \itemmax by -\itemmargin % | |
| \advance \leftskip by \tableindent % | |
| \exdentamount=\tableindent | |
| \parindent = 0pt | |
| \parskip = \smallskipamount | |
| \ifdim \parskip=0pt \parskip=2pt \fi% | |
| \def\Etable{\endgraf\afterenvbreak\endgroup}% | |
| \let\item = \internalBitem % | |
| \let\itemx = \internalBitemx % | |
| \let\kitem = \internalBkitem % | |
| \let\kitemx = \internalBkitemx % | |
| \let\xitem = \internalBxitem % | |
| \let\xitemx = \internalBxitemx % | |
| } | |
|  | |
| % This is the counter used by @enumerate, which is really @itemize | |
|  | |
| \newcount \itemno | |
|  | |
| \def\itemize{\parsearg\itemizezzz} | |
|  | |
| \def\itemizezzz #1{% | |
|   \begingroup % ended by the @end itemize | |
|   \itemizey {#1}{\Eitemize} | |
| } | |
|  | |
| \def\itemizey #1#2{% | |
| \aboveenvbreak % | |
| \itemmax=\itemindent % | |
| \advance \itemmax by -\itemmargin % | |
| \advance \leftskip by \itemindent % | |
| \exdentamount=\itemindent | |
| \parindent = 0pt % | |
| \parskip = \smallskipamount % | |
| \ifdim \parskip=0pt \parskip=2pt \fi% | |
| \def#2{\endgraf\afterenvbreak\endgroup}% | |
| \def\itemcontents{#1}% | |
| \let\item=\itemizeitem} | |
|  | |
| % Set sfcode to normal for the chars that usually have another value. | |
| % These are `.?!:;,' | |
| \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000 | |
|   \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 } | |
|  | |
| % \splitoff TOKENS\endmark defines \first to be the first token in | |
| % TOKENS, and \rest to be the remainder. | |
| % | |
| \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}% | |
|  | |
| % Allow an optional argument of an uppercase letter, lowercase letter, | |
| % or number, to specify the first label in the enumerated list.  No | |
| % argument is the same as `1'. | |
| % | |
| \def\enumerate{\parsearg\enumeratezzz} | |
| \def\enumeratezzz #1{\enumeratey #1  \endenumeratey} | |
| \def\enumeratey #1 #2\endenumeratey{% | |
|   \begingroup % ended by the @end enumerate | |
|   % | |
|   % If we were given no argument, pretend we were given `1'. | |
|   \def\thearg{#1}% | |
|   \ifx\thearg\empty \def\thearg{1}\fi | |
|   % | |
|   % Detect if the argument is a single token.  If so, it might be a | |
|   % letter.  Otherwise, the only valid thing it can be is a number. | |
|   % (We will always have one token, because of the test we just made. | |
|   % This is a good thing, since \splitoff doesn't work given nothing at | |
|   % all -- the first parameter is undelimited.) | |
|   \expandafter\splitoff\thearg\endmark | |
|   \ifx\rest\empty | |
|     % Only one token in the argument.  It could still be anything. | |
|     % A ``lowercase letter'' is one whose \lccode is nonzero. | |
|     % An ``uppercase letter'' is one whose \lccode is both nonzero, and | |
|     %   not equal to itself. | |
|     % Otherwise, we assume it's a number. | |
|     % | |
|     % We need the \relax at the end of the \ifnum lines to stop TeX from | |
|     % continuing to look for a <number>. | |
|     % | |
|     \ifnum\lccode\expandafter`\thearg=0\relax | |
|       \numericenumerate % a number (we hope) | |
|     \else | |
|       % It's a letter. | |
|       \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax | |
|         \lowercaseenumerate % lowercase letter | |
|       \else | |
|         \uppercaseenumerate % uppercase letter | |
|       \fi | |
|     \fi | |
|   \else | |
|     % Multiple tokens in the argument.  We hope it's a number. | |
|     \numericenumerate | |
|   \fi | |
| } | |
|  | |
| % An @enumerate whose labels are integers.  The starting integer is | |
| % given in \thearg. | |
| % | |
| \def\numericenumerate{% | |
|   \itemno = \thearg | |
|   \startenumeration{\the\itemno}% | |
| } | |
|  | |
| % The starting (lowercase) letter is in \thearg. | |
| \def\lowercaseenumerate{% | |
|   \itemno = \expandafter`\thearg | |
|   \startenumeration{% | |
|     % Be sure we're not beyond the end of the alphabet. | |
|     \ifnum\itemno=0 | |
|       \errmessage{No more lowercase letters in @enumerate; get a bigger | |
|                   alphabet}% | |
|     \fi | |
|     \char\lccode\itemno | |
|   }% | |
| } | |
|  | |
| % The starting (uppercase) letter is in \thearg. | |
| \def\uppercaseenumerate{% | |
|   \itemno = \expandafter`\thearg | |
|   \startenumeration{% | |
|     % Be sure we're not beyond the end of the alphabet. | |
|     \ifnum\itemno=0 | |
|       \errmessage{No more uppercase letters in @enumerate; get a bigger | |
|                   alphabet} | |
|     \fi | |
|     \char\uccode\itemno | |
|   }% | |
| } | |
|  | |
| % Call itemizey, adding a period to the first argument and supplying the | |
| % common last two arguments.  Also subtract one from the initial value in | |
| % \itemno, since @item increments \itemno. | |
| % | |
| \def\startenumeration#1{% | |
|   \advance\itemno by -1 | |
|   \itemizey{#1.}\Eenumerate\flushcr | |
| } | |
|  | |
| % @alphaenumerate and @capsenumerate are abbreviations for giving an arg | |
| % to @enumerate. | |
| % | |
| \def\alphaenumerate{\enumerate{a}} | |
| \def\capsenumerate{\enumerate{A}} | |
| \def\Ealphaenumerate{\Eenumerate} | |
| \def\Ecapsenumerate{\Eenumerate} | |
|  | |
| % Definition of @item while inside @itemize. | |
|  | |
| \def\itemizeitem{% | |
| \advance\itemno by 1 | |
| {\let\par=\endgraf \smallbreak}% | |
| \ifhmode \errmessage{In hmode at itemizeitem}\fi | |
| {\parskip=0in \hskip 0pt | |
| \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}% | |
| \vadjust{\penalty 1200}}% | |
| \flushcr} | |
|  | |
| % @multitable macros | |
| % Amy Hendrickson, 8/18/94, 3/6/96 | |
| % | |
| % @multitable ... @end multitable will make as many columns as desired. | |
| % Contents of each column will wrap at width given in preamble.  Width | |
| % can be specified either with sample text given in a template line, | |
| % or in percent of \hsize, the current width of text on page. | |
|  | |
| % Table can continue over pages but will only break between lines. | |
|  | |
| % To make preamble: | |
| % | |
| % Either define widths of columns in terms of percent of \hsize: | |
| %   @multitable @columnfractions .25 .3 .45 | |
| %   @item ... | |
| % | |
| %   Numbers following @columnfractions are the percent of the total | |
| %   current hsize to be used for each column. You may use as many | |
| %   columns as desired. | |
|  | |
|  | |
| % Or use a template: | |
| %   @multitable {Column 1 template} {Column 2 template} {Column 3 template} | |
| %   @item ... | |
| %   using the widest term desired in each column. | |
| % | |
| % For those who want to use more than one line's worth of words in | |
| % the preamble, break the line within one argument and it | |
| % will parse correctly, i.e., | |
| % | |
| %     @multitable {Column 1 template} {Column 2 template} {Column 3 | |
| %      template} | |
| % Not: | |
| %     @multitable {Column 1 template} {Column 2 template} | |
| %      {Column 3 template} | |
|  | |
| % Each new table line starts with @item, each subsequent new column | |
| % starts with @tab. Empty columns may be produced by supplying @tab's | |
| % with nothing between them for as many times as empty columns are needed, | |
| % ie, @tab@tab@tab will produce two empty columns. | |
|  | |
| % @item, @tab, @multitable or @end multitable do not need to be on their | |
| % own lines, but it will not hurt if they are. | |
|  | |
| % Sample multitable: | |
|  | |
| %   @multitable {Column 1 template} {Column 2 template} {Column 3 template} | |
| %   @item first col stuff @tab second col stuff @tab third col | |
| %   @item | |
| %   first col stuff | |
| %   @tab | |
| %   second col stuff | |
| %   @tab | |
| %   third col | |
| %   @item first col stuff @tab second col stuff | |
| %   @tab Many paragraphs of text may be used in any column. | |
| % | |
| %         They will wrap at the width determined by the template. | |
| %   @item@tab@tab This will be in third column. | |
| %   @end multitable | |
|  | |
| % Default dimensions may be reset by user. | |
| % @multitableparskip is vertical space between paragraphs in table. | |
| % @multitableparindent is paragraph indent in table. | |
| % @multitablecolmargin is horizontal space to be left between columns. | |
| % @multitablelinespace is space to leave between table items, baseline | |
| %                                                            to baseline. | |
| %   0pt means it depends on current normal line spacing. | |
| % | |
| \newskip\multitableparskip | |
| \newskip\multitableparindent | |
| \newdimen\multitablecolspace | |
| \newskip\multitablelinespace | |
| \multitableparskip=0pt | |
| \multitableparindent=6pt | |
| \multitablecolspace=12pt | |
| \multitablelinespace=0pt | |
|  | |
| % Macros used to set up halign preamble: | |
| % | |
| \let\endsetuptable\relax | |
| \def\xendsetuptable{\endsetuptable} | |
| \let\columnfractions\relax | |
| \def\xcolumnfractions{\columnfractions} | |
| \newif\ifsetpercent | |
|  | |
| % #1 is the part of the @columnfraction before the decimal point, which | |
| % is presumably either 0 or the empty string (but we don't check, we | |
| % just throw it away).  #2 is the decimal part, which we use as the | |
| % percent of \hsize for this column. | |
| \def\pickupwholefraction#1.#2 {% | |
|   \global\advance\colcount by 1 | |
|   \expandafter\xdef\csname col\the\colcount\endcsname{.#2\hsize}% | |
|   \setuptable | |
| } | |
|  | |
| \newcount\colcount | |
| \def\setuptable#1{% | |
|   \def\firstarg{#1}% | |
|   \ifx\firstarg\xendsetuptable | |
|     \let\go = \relax | |
|   \else | |
|     \ifx\firstarg\xcolumnfractions | |
|       \global\setpercenttrue | |
|     \else | |
|       \ifsetpercent | |
|          \let\go\pickupwholefraction | |
|       \else | |
|          \global\advance\colcount by 1 | |
|          \setbox0=\hbox{#1\unskip }% Add a normal word space as a separator; | |
|                             % typically that is always in the input, anyway. | |
|          \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}% | |
|       \fi | |
|     \fi | |
|     \ifx\go\pickupwholefraction | |
|       % Put the argument back for the \pickupwholefraction call, so | |
|       % we'll always have a period there to be parsed. | |
|       \def\go{\pickupwholefraction#1}% | |
|     \else | |
|       \let\go = \setuptable | |
|     \fi% | |
|   \fi | |
|   \go | |
| } | |
|  | |
| % This used to have \hskip1sp.  But then the space in a template line is | |
| % not enough.  That is bad.  So let's go back to just & until we | |
| % encounter the problem it was intended to solve again. | |
| % --karl, nathan@acm.org, 20apr99. | |
| \def\tab{&} | |
|  | |
| % @multitable ... @end multitable definitions: | |
| % | |
| \def\multitable{\parsearg\dotable} | |
| \def\dotable#1{\bgroup | |
|   \vskip\parskip | |
|   \let\item\crcr | |
|   \tolerance=9500 | |
|   \hbadness=9500 | |
|   \setmultitablespacing | |
|   \parskip=\multitableparskip | |
|   \parindent=\multitableparindent | |
|   \overfullrule=0pt | |
|   \global\colcount=0 | |
|   \def\Emultitable{\global\setpercentfalse\cr\egroup\egroup}% | |
|   % | |
|   % To parse everything between @multitable and @item: | |
|   \setuptable#1 \endsetuptable | |
|   % | |
|   % \everycr will reset column counter, \colcount, at the end of | |
|   % each line. Every column entry will cause \colcount to advance by one. | |
|   % The table preamble | |
|   % looks at the current \colcount to find the correct column width. | |
|   \everycr{\noalign{% | |
|   % | |
|   % \filbreak%% keeps underfull box messages off when table breaks over pages. | |
|   % Maybe so, but it also creates really weird page breaks when the table | |
|   % breaks over pages. Wouldn't \vfil be better?  Wait until the problem | |
|   % manifests itself, so it can be fixed for real --karl. | |
|     \global\colcount=0\relax}}% | |
|   % | |
|   % This preamble sets up a generic column definition, which will | |
|   % be used as many times as user calls for columns. | |
|   % \vtop will set a single line and will also let text wrap and | |
|   % continue for many paragraphs if desired. | |
|   \halign\bgroup&\global\advance\colcount by 1\relax | |
|     \multistrut\vtop{\hsize=\expandafter\csname col\the\colcount\endcsname | |
|   % | |
|   % In order to keep entries from bumping into each other | |
|   % we will add a \leftskip of \multitablecolspace to all columns after | |
|   % the first one. | |
|   % | |
|   % If a template has been used, we will add \multitablecolspace | |
|   % to the width of each template entry. | |
|   % | |
|   % If the user has set preamble in terms of percent of \hsize we will | |
|   % use that dimension as the width of the column, and the \leftskip | |
|   % will keep entries from bumping into each other.  Table will start at | |
|   % left margin and final column will justify at right margin. | |
|   % | |
|   % Make sure we don't inherit \rightskip from the outer environment. | |
|   \rightskip=0pt | |
|   \ifnum\colcount=1 | |
|     % The first column will be indented with the surrounding text. | |
|     \advance\hsize by\leftskip | |
|   \else | |
|     \ifsetpercent \else | |
|       % If user has not set preamble in terms of percent of \hsize | |
|       % we will advance \hsize by \multitablecolspace. | |
|       \advance\hsize by \multitablecolspace | |
|     \fi | |
|    % In either case we will make \leftskip=\multitablecolspace: | |
|   \leftskip=\multitablecolspace | |
|   \fi | |
|   % Ignoring space at the beginning and end avoids an occasional spurious | |
|   % blank line, when TeX decides to break the line at the space before the | |
|   % box from the multistrut, so the strut ends up on a line by itself. | |
|   % For example: | |
|   % @multitable @columnfractions .11 .89 | |
|   % @item @code{#} | |
|   % @tab Legal holiday which is valid in major parts of the whole country. | |
|   % Is automatically provided with highlighting sequences respectively marking | |
|   % characters. | |
|   \noindent\ignorespaces##\unskip\multistrut}\cr | |
| } | |
|  | |
| \def\setmultitablespacing{% test to see if user has set \multitablelinespace. | |
| % If so, do nothing. If not, give it an appropriate dimension based on | |
| % current baselineskip. | |
| \ifdim\multitablelinespace=0pt | |
| \setbox0=\vbox{X}\global\multitablelinespace=\the\baselineskip | |
| \global\advance\multitablelinespace by-\ht0 | |
| %% strut to put in table in case some entry doesn't have descenders, | |
| %% to keep lines equally spaced | |
| \let\multistrut = \strut | |
| \else | |
| %% FIXME: what is \box0 supposed to be? | |
| \gdef\multistrut{\vrule height\multitablelinespace depth\dp0 | |
| width0pt\relax} \fi | |
| %% Test to see if parskip is larger than space between lines of | |
| %% table. If not, do nothing. | |
| %%        If so, set to same dimension as multitablelinespace. | |
| \ifdim\multitableparskip>\multitablelinespace | |
| \global\multitableparskip=\multitablelinespace | |
| \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller | |
|                                       %% than skip between lines in the table. | |
| \fi% | |
| \ifdim\multitableparskip=0pt | |
| \global\multitableparskip=\multitablelinespace | |
| \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller | |
|                                       %% than skip between lines in the table. | |
| \fi} | |
|  | |
|  | |
| \message{conditionals,} | |
| % Prevent errors for section commands. | |
| % Used in @ignore and in failing conditionals. | |
| \def\ignoresections{% | |
|   \let\chapter=\relax | |
|   \let\unnumbered=\relax | |
|   \let\top=\relax | |
|   \let\unnumberedsec=\relax | |
|   \let\unnumberedsection=\relax | |
|   \let\unnumberedsubsec=\relax | |
|   \let\unnumberedsubsection=\relax | |
|   \let\unnumberedsubsubsec=\relax | |
|   \let\unnumberedsubsubsection=\relax | |
|   \let\section=\relax | |
|   \let\subsec=\relax | |
|   \let\subsubsec=\relax | |
|   \let\subsection=\relax | |
|   \let\subsubsection=\relax | |
|   \let\appendix=\relax | |
|   \let\appendixsec=\relax | |
|   \let\appendixsection=\relax | |
|   \let\appendixsubsec=\relax | |
|   \let\appendixsubsection=\relax | |
|   \let\appendixsubsubsec=\relax | |
|   \let\appendixsubsubsection=\relax | |
|   \let\contents=\relax | |
|   \let\smallbook=\relax | |
|   \let\titlepage=\relax | |
| } | |
|  | |
| % Used in nested conditionals, where we have to parse the Texinfo source | |
| % and so want to turn off most commands, in case they are used | |
| % incorrectly. | |
| % | |
| \def\ignoremorecommands{% | |
|   \let\defcodeindex = \relax | |
|   \let\defcv = \relax | |
|   \let\deffn = \relax | |
|   \let\deffnx = \relax | |
|   \let\defindex = \relax | |
|   \let\defivar = \relax | |
|   \let\defmac = \relax | |
|   \let\defmethod = \relax | |
|   \let\defop = \relax | |
|   \let\defopt = \relax | |
|   \let\defspec = \relax | |
|   \let\deftp = \relax | |
|   \let\deftypefn = \relax | |
|   \let\deftypefun = \relax | |
|   \let\deftypeivar = \relax | |
|   \let\deftypeop = \relax | |
|   \let\deftypevar = \relax | |
|   \let\deftypevr = \relax | |
|   \let\defun = \relax | |
|   \let\defvar = \relax | |
|   \let\defvr = \relax | |
|   \let\ref = \relax | |
|   \let\xref = \relax | |
|   \let\printindex = \relax | |
|   \let\pxref = \relax | |
|   \let\settitle = \relax | |
|   \let\setchapternewpage = \relax | |
|   \let\setchapterstyle = \relax | |
|   \let\everyheading = \relax | |
|   \let\evenheading = \relax | |
|   \let\oddheading = \relax | |
|   \let\everyfooting = \relax | |
|   \let\evenfooting = \relax | |
|   \let\oddfooting = \relax | |
|   \let\headings = \relax | |
|   \let\include = \relax | |
|   \let\lowersections = \relax | |
|   \let\down = \relax | |
|   \let\raisesections = \relax | |
|   \let\up = \relax | |
|   \let\set = \relax | |
|   \let\clear = \relax | |
|   \let\item = \relax | |
| } | |
|  | |
| % Ignore @ignore ... @end ignore. | |
| % | |
| \def\ignore{\doignore{ignore}} | |
|  | |
| % Ignore @ifinfo, @ifhtml, @ifnottex, @html, @menu, and @direntry text. | |
| % | |
| \def\ifinfo{\doignore{ifinfo}} | |
| \def\ifhtml{\doignore{ifhtml}} | |
| \def\ifnottex{\doignore{ifnottex}} | |
| \def\html{\doignore{html}} | |
| \def\menu{\doignore{menu}} | |
| \def\direntry{\doignore{direntry}} | |
|  | |
| % @dircategory CATEGORY  -- specify a category of the dir file | |
| % which this file should belong to.  Ignore this in TeX. | |
| \let\dircategory = \comment | |
|  | |
| % Ignore text until a line `@end #1'. | |
| % | |
| \def\doignore#1{\begingroup | |
|   % Don't complain about control sequences we have declared \outer. | |
|   \ignoresections | |
|   % | |
|   % Define a command to swallow text until we reach `@end #1'. | |
|   % This @ is a catcode 12 token (that is the normal catcode of @ in | |
|   % this texinfo.tex file).  We change the catcode of @ below to match. | |
|   \long\def\doignoretext##1@end #1{\enddoignore}% | |
|   % | |
|   % Make sure that spaces turn into tokens that match what \doignoretext wants. | |
|   \catcode32 = 10 | |
|   % | |
|   % Ignore braces, too, so mismatched braces don't cause trouble. | |
|   \catcode`\{ = 9 | |
|   \catcode`\} = 9 | |
|   % | |
|   % We must not have @c interpreted as a control sequence. | |
|   \catcode`\@ = 12 | |
|   % | |
|   % Make the letter c a comment character so that the rest of the line | |
|   % will be ignored. This way, the document can have (for example) | |
|   %   @c @end ifinfo | |
|   % and the @end ifinfo will be properly ignored. | |
|   % (We've just changed @ to catcode 12.) | |
|   \catcode`\c = 14 | |
|   % | |
|   % And now expand that command. | |
|   \doignoretext | |
| } | |
|  | |
| % What we do to finish off ignored text. | |
| % | |
| \def\enddoignore{\endgroup\ignorespaces}% | |
|  | |
| \newif\ifwarnedobs\warnedobsfalse | |
| \def\obstexwarn{% | |
|   \ifwarnedobs\relax\else | |
|   % We need to warn folks that they may have trouble with TeX 3.0. | |
|   % This uses \immediate\write16 rather than \message to get newlines. | |
|     \immediate\write16{} | |
|     \immediate\write16{WARNING: for users of Unix TeX 3.0!} | |
|     \immediate\write16{This manual trips a bug in TeX version 3.0 (tex hangs).} | |
|     \immediate\write16{If you are running another version of TeX, relax.} | |
|     \immediate\write16{If you are running Unix TeX 3.0, kill this TeX process.} | |
|     \immediate\write16{  Then upgrade your TeX installation if you can.} | |
|     \immediate\write16{  (See ftp://ftp.gnu.org/pub/gnu/TeX.README.)} | |
|     \immediate\write16{If you are stuck with version 3.0, run the} | |
|     \immediate\write16{  script ``tex3patch'' from the Texinfo distribution} | |
|     \immediate\write16{  to use a workaround.} | |
|     \immediate\write16{} | |
|     \global\warnedobstrue | |
|     \fi | |
| } | |
|  | |
| % **In TeX 3.0, setting text in \nullfont hangs tex.  For a | |
| % workaround (which requires the file ``dummy.tfm'' to be installed), | |
| % uncomment the following line: | |
| %%%%%\font\nullfont=dummy\let\obstexwarn=\relax | |
|  | |
| % Ignore text, except that we keep track of conditional commands for | |
| % purposes of nesting, up to an `@end #1' command. | |
| % | |
| \def\nestedignore#1{% | |
|   \obstexwarn | |
|   % We must actually expand the ignored text to look for the @end | |
|   % command, so that nested ignore constructs work.  Thus, we put the | |
|   % text into a \vbox and then do nothing with the result.  To minimize | |
|   % the change of memory overflow, we follow the approach outlined on | |
|   % page 401 of the TeXbook: make the current font be a dummy font. | |
|   % | |
|   \setbox0 = \vbox\bgroup | |
|     % Don't complain about control sequences we have declared \outer. | |
|     \ignoresections | |
|     % | |
|     % Define `@end #1' to end the box, which will in turn undefine the | |
|     % @end command again. | |
|     \expandafter\def\csname E#1\endcsname{\egroup\ignorespaces}% | |
|     % | |
|     % We are going to be parsing Texinfo commands.  Most cause no | |
|     % trouble when they are used incorrectly, but some commands do | |
|     % complicated argument parsing or otherwise get confused, so we | |
|     % undefine them. | |
|     % | |
|     % We can't do anything about stray @-signs, unfortunately; | |
|     % they'll produce `undefined control sequence' errors. | |
|     \ignoremorecommands | |
|     % | |
|     % Set the current font to be \nullfont, a TeX primitive, and define | |
|     % all the font commands to also use \nullfont.  We don't use | |
|     % dummy.tfm, as suggested in the TeXbook, because not all sites | |
|     % might have that installed.  Therefore, math mode will still | |
|     % produce output, but that should be an extremely small amount of | |
|     % stuff compared to the main input. | |
|     % | |
|     \nullfont | |
|     \let\tenrm=\nullfont \let\tenit=\nullfont \let\tensl=\nullfont | |
|     \let\tenbf=\nullfont \let\tentt=\nullfont \let\smallcaps=\nullfont | |
|     \let\tensf=\nullfont | |
|     % Similarly for index fonts (mostly for their use in smallexample). | |
|     \let\smallrm=\nullfont \let\smallit=\nullfont \let\smallsl=\nullfont | |
|     \let\smallbf=\nullfont \let\smalltt=\nullfont \let\smallsc=\nullfont | |
|     \let\smallsf=\nullfont | |
|     % | |
|     % Don't complain when characters are missing from the fonts. | |
|     \tracinglostchars = 0 | |
|     % | |
|     % Don't bother to do space factor calculations. | |
|     \frenchspacing | |
|     % | |
|     % Don't report underfull hboxes. | |
|     \hbadness = 10000 | |
|     % | |
|     % Do minimal line-breaking. | |
|     \pretolerance = 10000 | |
|     % | |
|     % Do not execute instructions in @tex | |
|     \def\tex{\doignore{tex}}% | |
|     % Do not execute macro definitions. | |
|     % `c' is a comment character, so the word `macro' will get cut off. | |
|     \def\macro{\doignore{ma}}% | |
| } | |
|  | |
| % @set VAR sets the variable VAR to an empty value. | |
| % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE. | |
| % | |
| % Since we want to separate VAR from REST-OF-LINE (which might be | |
| % empty), we can't just use \parsearg; we have to insert a space of our | |
| % own to delimit the rest of the line, and then take it out again if we | |
| % didn't need it.  Make sure the catcode of space is correct to avoid | |
| % losing inside @example, for instance. | |
| % | |
| \def\set{\begingroup\catcode` =10 | |
|   \catcode`\-=12 \catcode`\_=12 % Allow - and _ in VAR. | |
|   \parsearg\setxxx} | |
| \def\setxxx#1{\setyyy#1 \endsetyyy} | |
| \def\setyyy#1 #2\endsetyyy{% | |
|   \def\temp{#2}% | |
|   \ifx\temp\empty \global\expandafter\let\csname SET#1\endcsname = \empty | |
|   \else \setzzz{#1}#2\endsetzzz % Remove the trailing space \setxxx inserted. | |
|   \fi | |
|   \endgroup | |
| } | |
| % Can't use \xdef to pre-expand #2 and save some time, since \temp or | |
| % \next or other control sequences that we've defined might get us into | |
| % an infinite loop. Consider `@set foo @cite{bar}'. | |
| \def\setzzz#1#2 \endsetzzz{\expandafter\gdef\csname SET#1\endcsname{#2}} | |
|  | |
| % @clear VAR clears (i.e., unsets) the variable VAR. | |
| % | |
| \def\clear{\parsearg\clearxxx} | |
| \def\clearxxx#1{\global\expandafter\let\csname SET#1\endcsname=\relax} | |
|  | |
| % @value{foo} gets the text saved in variable foo. | |
| { | |
|   \catcode`\_ = \active | |
|   % | |
|   % We might end up with active _ or - characters in the argument if | |
|   % we're called from @code, as @code{@value{foo-bar_}}.  So \let any | |
|   % such active characters to their normal equivalents. | |
|   \gdef\value{\begingroup | |
|     \catcode`\-=12 \catcode`\_=12 | |
|     \indexbreaks \let_\normalunderscore | |
|     \valuexxx} | |
| } | |
| \def\valuexxx#1{\expandablevalue{#1}\endgroup} | |
|  | |
| % We have this subroutine so that we can handle at least some @value's | |
| % properly in indexes (we \let\value to this in \indexdummies).  Ones | |
| % whose names contain - or _ still won't work, but we can't do anything | |
| % about that.  The command has to be fully expandable, since the result | |
| % winds up in the index file.  This means that if the variable's value | |
| % contains other Texinfo commands, it's almost certain it will fail | |
| % (although perhaps we could fix that with sufficient work to do a | |
| % one-level expansion on the result, instead of complete). | |
| % | |
| \def\expandablevalue#1{% | |
|   \expandafter\ifx\csname SET#1\endcsname\relax | |
|     {[No value for ``#1'']}% | |
|   \else | |
|     \csname SET#1\endcsname | |
|   \fi | |
| } | |
|  | |
| % @ifset VAR ... @end ifset reads the `...' iff VAR has been defined | |
| % with @set. | |
| % | |
| \def\ifset{\parsearg\ifsetxxx} | |
| \def\ifsetxxx #1{% | |
|   \expandafter\ifx\csname SET#1\endcsname\relax | |
|     \expandafter\ifsetfail | |
|   \else | |
|     \expandafter\ifsetsucceed | |
|   \fi | |
| } | |
| \def\ifsetsucceed{\conditionalsucceed{ifset}} | |
| \def\ifsetfail{\nestedignore{ifset}} | |
| \defineunmatchedend{ifset} | |
|  | |
| % @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been | |
| % defined with @set, or has been undefined with @clear. | |
| % | |
| \def\ifclear{\parsearg\ifclearxxx} | |
| \def\ifclearxxx #1{% | |
|   \expandafter\ifx\csname SET#1\endcsname\relax | |
|     \expandafter\ifclearsucceed | |
|   \else | |
|     \expandafter\ifclearfail | |
|   \fi | |
| } | |
| \def\ifclearsucceed{\conditionalsucceed{ifclear}} | |
| \def\ifclearfail{\nestedignore{ifclear}} | |
| \defineunmatchedend{ifclear} | |
|  | |
| % @iftex, @ifnothtml, @ifnotinfo always succeed; we read the text | |
| % following, through the first @end iftex (etc.).  Make `@end iftex' | |
| % (etc.) valid only after an @iftex. | |
| % | |
| \def\iftex{\conditionalsucceed{iftex}} | |
| \def\ifnothtml{\conditionalsucceed{ifnothtml}} | |
| \def\ifnotinfo{\conditionalsucceed{ifnotinfo}} | |
| \defineunmatchedend{iftex} | |
| \defineunmatchedend{ifnothtml} | |
| \defineunmatchedend{ifnotinfo} | |
|  | |
| % We can't just want to start a group at @iftex (for example) and end it | |
| % at @end iftex, since then @set commands inside the conditional have no | |
| % effect (they'd get reverted at the end of the group).  So we must | |
| % define \Eiftex to redefine itself to be its previous value.  (We can't | |
| % just define it to fail again with an ``unmatched end'' error, since | |
| % the @ifset might be nested.) | |
| % | |
| \def\conditionalsucceed#1{% | |
|   \edef\temp{% | |
|     % Remember the current value of \E#1. | |
|     \let\nece{prevE#1} = \nece{E#1}% | |
|     % | |
|     % At the `@end #1', redefine \E#1 to be its previous value. | |
|     \def\nece{E#1}{\let\nece{E#1} = \nece{prevE#1}}% | |
|   }% | |
|   \temp | |
| } | |
|  | |
| % We need to expand lots of \csname's, but we don't want to expand the | |
| % control sequences after we've constructed them. | |
| % | |
| \def\nece#1{\expandafter\noexpand\csname#1\endcsname} | |
|  | |
| % @defininfoenclose. | |
| \let\definfoenclose=\comment | |
|  | |
|  | |
| \message{indexing,} | |
| % Index generation facilities | |
|  | |
| % Define \newwrite to be identical to plain tex's \newwrite | |
| % except not \outer, so it can be used within \newindex. | |
| {\catcode`\@=11 | |
| \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}} | |
|  | |
| % \newindex {foo} defines an index named foo. | |
| % It automatically defines \fooindex such that | |
| % \fooindex ...rest of line... puts an entry in the index foo. | |
| % It also defines \fooindfile to be the number of the output channel for | |
| % the file that accumulates this index.  The file's extension is foo. | |
| % The name of an index should be no more than 2 characters long | |
| % for the sake of vms. | |
| % | |
| \def\newindex#1{% | |
|   \iflinks | |
|     \expandafter\newwrite \csname#1indfile\endcsname | |
|     \openout \csname#1indfile\endcsname \jobname.#1 % Open the file | |
|   \fi | |
|   \expandafter\xdef\csname#1index\endcsname{%     % Define @#1index | |
|     \noexpand\doindex{#1}} | |
| } | |
|  | |
| % @defindex foo  ==  \newindex{foo} | |
|  | |
| \def\defindex{\parsearg\newindex} | |
|  | |
| % Define @defcodeindex, like @defindex except put all entries in @code. | |
|  | |
| \def\newcodeindex#1{% | |
|   \iflinks | |
|     \expandafter\newwrite \csname#1indfile\endcsname | |
|     \openout \csname#1indfile\endcsname \jobname.#1 | |
|   \fi | |
|   \expandafter\xdef\csname#1index\endcsname{% | |
|     \noexpand\docodeindex{#1}} | |
| } | |
|  | |
| \def\defcodeindex{\parsearg\newcodeindex} | |
|  | |
| % @synindex foo bar    makes index foo feed into index bar. | |
| % Do this instead of @defindex foo if you don't want it as a separate index. | |
| % The \closeout helps reduce unnecessary open files; the limit on the | |
| % Acorn RISC OS is a mere 16 files. | |
| \def\synindex#1 #2 {% | |
|   \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname | |
|   \expandafter\closeout\csname#1indfile\endcsname | |
|   \expandafter\let\csname#1indfile\endcsname=\synindexfoo | |
|   \expandafter\xdef\csname#1index\endcsname{% define \xxxindex | |
|     \noexpand\doindex{#2}}% | |
| } | |
|  | |
| % @syncodeindex foo bar   similar, but put all entries made for index foo | |
| % inside @code. | |
| \def\syncodeindex#1 #2 {% | |
|   \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname | |
|   \expandafter\closeout\csname#1indfile\endcsname | |
|   \expandafter\let\csname#1indfile\endcsname=\synindexfoo | |
|   \expandafter\xdef\csname#1index\endcsname{% define \xxxindex | |
|     \noexpand\docodeindex{#2}}% | |
| } | |
|  | |
| % Define \doindex, the driver for all \fooindex macros. | |
| % Argument #1 is generated by the calling \fooindex macro, | |
| %  and it is "foo", the name of the index. | |
|  | |
| % \doindex just uses \parsearg; it calls \doind for the actual work. | |
| % This is because \doind is more useful to call from other macros. | |
|  | |
| % There is also \dosubind {index}{topic}{subtopic} | |
| % which makes an entry in a two-level index such as the operation index. | |
|  | |
| \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer} | |
| \def\singleindexer #1{\doind{\indexname}{#1}} | |
|  | |
| % like the previous two, but they put @code around the argument. | |
| \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer} | |
| \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}} | |
|  | |
| \def\indexdummies{% | |
| \def\ { }% | |
| % Take care of the plain tex accent commands. | |
| \def\"{\realbackslash "}% | |
| \def\`{\realbackslash `}% | |
| \def\'{\realbackslash '}% | |
| \def\^{\realbackslash ^}% | |
| \def\~{\realbackslash ~}% | |
| \def\={\realbackslash =}% | |
| \def\b{\realbackslash b}% | |
| \def\c{\realbackslash c}% | |
| \def\d{\realbackslash d}% | |
| \def\u{\realbackslash u}% | |
| \def\v{\realbackslash v}% | |
| \def\H{\realbackslash H}% | |
| % Take care of the plain tex special European modified letters. | |
| \def\oe{\realbackslash oe}% | |
| \def\ae{\realbackslash ae}% | |
| \def\aa{\realbackslash aa}% | |
| \def\OE{\realbackslash OE}% | |
| \def\AE{\realbackslash AE}% | |
| \def\AA{\realbackslash AA}% | |
| \def\o{\realbackslash o}% | |
| \def\O{\realbackslash O}% | |
| \def\l{\realbackslash l}% | |
| \def\L{\realbackslash L}% | |
| \def\ss{\realbackslash ss}% | |
| % Take care of texinfo commands likely to appear in an index entry. | |
| % (Must be a way to avoid doing expansion at all, and thus not have to | |
| % laboriously list every single command here.) | |
| \def\@{@}% will be @@ when we switch to @ as escape char. | |
| % Need these in case \tex is in effect and \{ is a \delimiter again. | |
| % But can't use \lbracecmd and \rbracecmd because texindex assumes | |
| % braces and backslashes are used only as delimiters.   | |
| \let\{ = \mylbrace | |
| \let\} = \myrbrace | |
| \def\_{{\realbackslash _}}% | |
| \def\w{\realbackslash w }% | |
| \def\bf{\realbackslash bf }% | |
| %\def\rm{\realbackslash rm }% | |
| \def\sl{\realbackslash sl }% | |
| \def\sf{\realbackslash sf}% | |
| \def\tt{\realbackslash tt}% | |
| \def\gtr{\realbackslash gtr}% | |
| \def\less{\realbackslash less}% | |
| \def\hat{\realbackslash hat}% | |
| \def\TeX{\realbackslash TeX}% | |
| \def\dots{\realbackslash dots }% | |
| \def\result{\realbackslash result}% | |
| \def\equiv{\realbackslash equiv}% | |
| \def\expansion{\realbackslash expansion}% | |
| \def\print{\realbackslash print}% | |
| \def\error{\realbackslash error}% | |
| \def\point{\realbackslash point}% | |
| \def\copyright{\realbackslash copyright}% | |
| \def\tclose##1{\realbackslash tclose {##1}}% | |
| \def\code##1{\realbackslash code {##1}}% | |
| \def\uref##1{\realbackslash uref {##1}}% | |
| \def\url##1{\realbackslash url {##1}}% | |
| \def\env##1{\realbackslash env {##1}}% | |
| \def\command##1{\realbackslash command {##1}}% | |
| \def\option##1{\realbackslash option {##1}}% | |
| \def\dotless##1{\realbackslash dotless {##1}}% | |
| \def\samp##1{\realbackslash samp {##1}}% | |
| \def\,##1{\realbackslash ,{##1}}% | |
| \def\t##1{\realbackslash t {##1}}% | |
| \def\r##1{\realbackslash r {##1}}% | |
| \def\i##1{\realbackslash i {##1}}% | |
| \def\b##1{\realbackslash b {##1}}% | |
| \def\sc##1{\realbackslash sc {##1}}% | |
| \def\cite##1{\realbackslash cite {##1}}% | |
| \def\key##1{\realbackslash key {##1}}% | |
| \def\file##1{\realbackslash file {##1}}% | |
| \def\var##1{\realbackslash var {##1}}% | |
| \def\kbd##1{\realbackslash kbd {##1}}% | |
| \def\dfn##1{\realbackslash dfn {##1}}% | |
| \def\emph##1{\realbackslash emph {##1}}% | |
| \def\acronym##1{\realbackslash acronym {##1}}% | |
| % | |
| % Handle some cases of @value -- where the variable name does not | |
| % contain - or _, and the value does not contain any | |
| % (non-fully-expandable) commands. | |
| \let\value = \expandablevalue | |
| % | |
| \unsepspaces | |
| % Turn off macro expansion | |
| \turnoffmacros | |
| } | |
|  | |
| % If an index command is used in an @example environment, any spaces | |
| % therein should become regular spaces in the raw index file, not the | |
| % expansion of \tie (\\leavevmode \penalty \@M \ ). | |
| {\obeyspaces | |
|  \gdef\unsepspaces{\obeyspaces\let =\space}} | |
|  | |
| % \indexnofonts no-ops all font-change commands. | |
| % This is used when outputting the strings to sort the index by. | |
| \def\indexdummyfont#1{#1} | |
| \def\indexdummytex{TeX} | |
| \def\indexdummydots{...} | |
|  | |
| \def\indexnofonts{% | |
| % Just ignore accents. | |
| \let\,=\indexdummyfont | |
| \let\"=\indexdummyfont | |
| \let\`=\indexdummyfont | |
| \let\'=\indexdummyfont | |
| \let\^=\indexdummyfont | |
| \let\~=\indexdummyfont | |
| \let\==\indexdummyfont | |
| \let\b=\indexdummyfont | |
| \let\c=\indexdummyfont | |
| \let\d=\indexdummyfont | |
| \let\u=\indexdummyfont | |
| \let\v=\indexdummyfont | |
| \let\H=\indexdummyfont | |
| \let\dotless=\indexdummyfont | |
| % Take care of the plain tex special European modified letters. | |
| \def\oe{oe}% | |
| \def\ae{ae}% | |
| \def\aa{aa}% | |
| \def\OE{OE}% | |
| \def\AE{AE}% | |
| \def\AA{AA}% | |
| \def\o{o}% | |
| \def\O{O}% | |
| \def\l{l}% | |
| \def\L{L}% | |
| \def\ss{ss}% | |
| \let\w=\indexdummyfont | |
| \let\t=\indexdummyfont | |
| \let\r=\indexdummyfont | |
| \let\i=\indexdummyfont | |
| \let\b=\indexdummyfont | |
| \let\emph=\indexdummyfont | |
| \let\strong=\indexdummyfont | |
| \let\cite=\indexdummyfont | |
| \let\sc=\indexdummyfont | |
| %Don't no-op \tt, since it isn't a user-level command | |
| % and is used in the definitions of the active chars like <, >, |... | |
| %\let\tt=\indexdummyfont | |
| \let\tclose=\indexdummyfont | |
| \let\code=\indexdummyfont | |
| \let\url=\indexdummyfont | |
| \let\uref=\indexdummyfont | |
| \let\env=\indexdummyfont | |
| \let\acronym=\indexdummyfont | |
| \let\command=\indexdummyfont | |
| \let\option=\indexdummyfont | |
| \let\file=\indexdummyfont | |
| \let\samp=\indexdummyfont | |
| \let\kbd=\indexdummyfont | |
| \let\key=\indexdummyfont | |
| \let\var=\indexdummyfont | |
| \let\TeX=\indexdummytex | |
| \let\dots=\indexdummydots | |
| \def\@{@}% | |
| } | |
|  | |
| % To define \realbackslash, we must make \ not be an escape. | |
| % We must first make another character (@) an escape | |
| % so we do not become unable to do a definition. | |
|  | |
| {\catcode`\@=0 \catcode`\\=\other | |
|  @gdef@realbackslash{\}} | |
|  | |
| \let\indexbackslash=0  %overridden during \printindex. | |
| \let\SETmarginindex=\relax % put index entries in margin (undocumented)? | |
|  | |
| % For \ifx comparisons. | |
| \def\emptymacro{\empty} | |
|  | |
| % Most index entries go through here, but \dosubind is the general case. | |
| % | |
| \def\doind#1#2{\dosubind{#1}{#2}\empty} | |
|  | |
| % Workhorse for all \fooindexes. | |
| % #1 is name of index, #2 is stuff to put there, #3 is subentry -- | |
| % \empty if called from \doind, as we usually are.  The main exception | |
| % is with defuns, which call us directly. | |
| % | |
| \def\dosubind#1#2#3{% | |
|   % Put the index entry in the margin if desired. | |
|   \ifx\SETmarginindex\relax\else | |
|     \insert\margin{\hbox{\vrule height8pt depth3pt width0pt #2}}% | |
|   \fi | |
|   {% | |
|     \count255=\lastpenalty | |
|     {% | |
|       \indexdummies % Must do this here, since \bf, etc expand at this stage | |
|       \escapechar=`\\ | |
|       {% | |
|         \let\folio = 0% We will expand all macros now EXCEPT \folio. | |
|         \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now | |
|         % so it will be output as is; and it will print as backslash. | |
|         % | |
|         \def\thirdarg{#3}% | |
|         % | |
|         % If third arg is present, precede it with space in sort key. | |
|         \ifx\thirdarg\emptymacro | |
|           \let\subentry = \empty | |
|         \else | |
|           \def\subentry{ #3}% | |
|         \fi | |
|         % | |
|         % First process the index entry with all font commands turned | |
|         % off to get the string to sort by. | |
|         {\indexnofonts \xdef\indexsorttmp{#2\subentry}}% | |
|         % | |
|         % Now the real index entry with the fonts. | |
|         \toks0 = {#2}% | |
|         % | |
|         % If third (subentry) arg is present, add it to the index | |
|         % string.  And include a space. | |
|         \ifx\thirdarg\emptymacro \else | |
|           \toks0 = \expandafter{\the\toks0 \space #3}% | |
|         \fi | |
|         % | |
|         % Set up the complete index entry, with both the sort key | |
|         % and the original text, including any font commands.  We write | |
|         % three arguments to \entry to the .?? file, texindex reduces to | |
|         % two when writing the .??s sorted result. | |
|         \edef\temp{% | |
|           \write\csname#1indfile\endcsname{% | |
|             \realbackslash entry{\indexsorttmp}{\folio}{\the\toks0}}% | |
|         }% | |
|         % | |
|         % If a skip is the last thing on the list now, preserve it | |
|         % by backing up by \lastskip, doing the \write, then inserting | |
|         % the skip again.  Otherwise, the whatsit generated by the | |
|         % \write will make \lastskip zero.  The result is that sequences | |
|         % like this: | |
|         % @end defun | |
|         % @tindex whatever | |
|         % @defun ... | |
|         % will have extra space inserted, because the \medbreak in the | |
|         % start of the @defun won't see the skip inserted by the @end of | |
|         % the previous defun. | |
|         % | |
|         % But don't do any of this if we're not in vertical mode.  We | |
|         % don't want to do a \vskip and prematurely end a paragraph. | |
|         % | |
|         % Avoid page breaks due to these extra skips, too. | |
|         % | |
|         \iflinks | |
|           \ifvmode | |
|             \skip0 = \lastskip | |
|             \ifdim\lastskip = 0pt \else \nobreak\vskip-\lastskip \fi | |
|           \fi | |
|           % | |
|           \temp % do the write | |
|           % | |
|           % | |
|           \ifvmode \ifdim\skip0 = 0pt \else \nobreak\vskip\skip0 \fi \fi | |
|         \fi | |
|       }% | |
|     }% | |
|     \penalty\count255 | |
|   }% | |
| } | |
|  | |
| % The index entry written in the file actually looks like | |
| %  \entry {sortstring}{page}{topic} | |
| % or | |
| %  \entry {sortstring}{page}{topic}{subtopic} | |
| % The texindex program reads in these files and writes files | |
| % containing these kinds of lines: | |
| %  \initial {c} | |
| %     before the first topic whose initial is c | |
| %  \entry {topic}{pagelist} | |
| %     for a topic that is used without subtopics | |
| %  \primary {topic} | |
| %     for the beginning of a topic that is used with subtopics | |
| %  \secondary {subtopic}{pagelist} | |
| %     for each subtopic. | |
|  | |
| % Define the user-accessible indexing commands | |
| % @findex, @vindex, @kindex, @cindex. | |
|  | |
| \def\findex {\fnindex} | |
| \def\kindex {\kyindex} | |
| \def\cindex {\cpindex} | |
| \def\vindex {\vrindex} | |
| \def\tindex {\tpindex} | |
| \def\pindex {\pgindex} | |
|  | |
| \def\cindexsub {\begingroup\obeylines\cindexsub} | |
| {\obeylines % | |
| \gdef\cindexsub "#1" #2^^M{\endgroup % | |
| \dosubind{cp}{#2}{#1}}} | |
|  | |
| % Define the macros used in formatting output of the sorted index material. | |
|  | |
| % @printindex causes a particular index (the ??s file) to get printed. | |
| % It does not print any chapter heading (usually an @unnumbered). | |
| % | |
| \def\printindex{\parsearg\doprintindex} | |
| \def\doprintindex#1{\begingroup | |
|   \dobreak \chapheadingskip{10000}% | |
|   % | |
|   \smallfonts \rm | |
|   \tolerance = 9500 | |
|   \indexbreaks | |
|   % | |
|   % See if the index file exists and is nonempty. | |
|   % Change catcode of @ here so that if the index file contains | |
|   % \initial {@} | |
|   % as its first line, TeX doesn't complain about mismatched braces | |
|   % (because it thinks @} is a control sequence). | |
|   \catcode`\@ = 11 | |
|   \openin 1 \jobname.#1s | |
|   \ifeof 1 | |
|     % \enddoublecolumns gets confused if there is no text in the index, | |
|     % and it loses the chapter title and the aux file entries for the | |
|     % index.  The easiest way to prevent this problem is to make sure | |
|     % there is some text. | |
|     \putwordIndexNonexistent | |
|   \else | |
|     % | |
|     % If the index file exists but is empty, then \openin leaves \ifeof | |
|     % false.  We have to make TeX try to read something from the file, so | |
|     % it can discover if there is anything in it. | |
|     \read 1 to \temp | |
|     \ifeof 1 | |
|       \putwordIndexIsEmpty | |
|     \else | |
|       % Index files are almost Texinfo source, but we use \ as the escape | |
|       % character.  It would be better to use @, but that's too big a change | |
|       % to make right now. | |
|       \def\indexbackslash{\rawbackslashxx}% | |
|       \catcode`\\ = 0 | |
|       \escapechar = `\\ | |
|       \begindoublecolumns | |
|       \input \jobname.#1s | |
|       \enddoublecolumns | |
|     \fi | |
|   \fi | |
|   \closein 1 | |
| \endgroup} | |
|  | |
| % These macros are used by the sorted index file itself. | |
| % Change them to control the appearance of the index. | |
|  | |
| \def\initial#1{{% | |
|   % Some minor font changes for the special characters. | |
|   \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt | |
|   % | |
|   % Remove any glue we may have, we'll be inserting our own. | |
|   \removelastskip | |
|   % | |
|   % We like breaks before the index initials, so insert a bonus. | |
|   \penalty -300 | |
|   % | |
|   % Typeset the initial.  Making this add up to a whole number of | |
|   % baselineskips increases the chance of the dots lining up from column | |
|   % to column.  It still won't often be perfect, because of the stretch | |
|   % we need before each entry, but it's better. | |
|   % | |
|   % No shrink because it confuses \balancecolumns. | |
|   \vskip 1.67\baselineskip plus .5\baselineskip | |
|   \leftline{\secbf #1}% | |
|   \vskip .33\baselineskip plus .1\baselineskip | |
|   % | |
|   % Do our best not to break after the initial. | |
|   \nobreak | |
| }} | |
|  | |
| % This typesets a paragraph consisting of #1, dot leaders, and then #2 | |
| % flush to the right margin.  It is used for index and table of contents | |
| % entries.  The paragraph is indented by \leftskip. | |
| % | |
| \def\entry#1#2{\begingroup | |
|   % | |
|   % Start a new paragraph if necessary, so our assignments below can't | |
|   % affect previous text. | |
|   \par | |
|   % | |
|   % Do not fill out the last line with white space. | |
|   \parfillskip = 0in | |
|   % | |
|   % No extra space above this paragraph. | |
|   \parskip = 0in | |
|   % | |
|   % Do not prefer a separate line ending with a hyphen to fewer lines. | |
|   \finalhyphendemerits = 0 | |
|   % | |
|   % \hangindent is only relevant when the entry text and page number | |
|   % don't both fit on one line.  In that case, bob suggests starting the | |
|   % dots pretty far over on the line.  Unfortunately, a large | |
|   % indentation looks wrong when the entry text itself is broken across | |
|   % lines.  So we use a small indentation and put up with long leaders. | |
|   % | |
|   % \hangafter is reset to 1 (which is the value we want) at the start | |
|   % of each paragraph, so we need not do anything with that. | |
|   \hangindent = 2em | |
|   % | |
|   % When the entry text needs to be broken, just fill out the first line | |
|   % with blank space. | |
|   \rightskip = 0pt plus1fil | |
|   % | |
|   % A bit of stretch before each entry for the benefit of balancing columns. | |
|   \vskip 0pt plus1pt | |
|   % | |
|   % Start a ``paragraph'' for the index entry so the line breaking | |
|   % parameters we've set above will have an effect. | |
|   \noindent | |
|   % | |
|   % Insert the text of the index entry.  TeX will do line-breaking on it. | |
|   #1% | |
|   % The following is kludged to not output a line of dots in the index if | |
|   % there are no page numbers.  The next person who breaks this will be | |
|   % cursed by a Unix daemon. | |
|   \def\tempa{{\rm }}% | |
|   \def\tempb{#2}% | |
|   \edef\tempc{\tempa}% | |
|   \edef\tempd{\tempb}% | |
|   \ifx\tempc\tempd\ \else% | |
|     % | |
|     % If we must, put the page number on a line of its own, and fill out | |
|     % this line with blank space.  (The \hfil is overwhelmed with the | |
|     % fill leaders glue in \indexdotfill if the page number does fit.) | |
|     \hfil\penalty50 | |
|     \null\nobreak\indexdotfill % Have leaders before the page number. | |
|     % | |
|     % The `\ ' here is removed by the implicit \unskip that TeX does as | |
|     % part of (the primitive) \par.  Without it, a spurious underfull | |
|     % \hbox ensues. | |
|     \ifpdf | |
|       \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph. | |
|     \else | |
|       \ #2% The page number ends the paragraph. | |
|     \fi | |
|   \fi% | |
|   \par | |
| \endgroup} | |
|  | |
| % Like \dotfill except takes at least 1 em. | |
| \def\indexdotfill{\cleaders | |
|   \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill} | |
|  | |
| \def\primary #1{\line{#1\hfil}} | |
|  | |
| \newskip\secondaryindent \secondaryindent=0.5cm | |
|  | |
| \def\secondary #1#2{ | |
| {\parfillskip=0in \parskip=0in | |
| \hangindent =1in \hangafter=1 | |
| \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par | |
| }} | |
|  | |
| % Define two-column mode, which we use to typeset indexes. | |
| % Adapted from the TeXbook, page 416, which is to say, | |
| % the manmac.tex format used to print the TeXbook itself. | |
| \catcode`\@=11 | |
|  | |
| \newbox\partialpage | |
| \newdimen\doublecolumnhsize | |
|  | |
| \def\begindoublecolumns{\begingroup % ended by \enddoublecolumns | |
|   % Grab any single-column material above us. | |
|   \output = {% | |
|     % | |
|     % Here is a possibility not foreseen in manmac: if we accumulate a | |
|     % whole lot of material, we might end up calling this \output | |
|     % routine twice in a row (see the doublecol-lose test, which is | |
|     % essentially a couple of indexes with @setchapternewpage off).  In | |
|     % that case we just ship out what is in \partialpage with the normal | |
|     % output routine.  Generally, \partialpage will be empty when this | |
|     % runs and this will be a no-op.  See the indexspread.tex test case. | |
|     \ifvoid\partialpage \else | |
|       \onepageout{\pagecontents\partialpage}% | |
|     \fi | |
|     % | |
|     \global\setbox\partialpage = \vbox{% | |
|       % Unvbox the main output page. | |
|       \unvbox\PAGE | |
|       \kern-\topskip \kern\baselineskip | |
|     }% | |
|   }% | |
|   \eject % run that output routine to set \partialpage | |
|   % | |
|   % Use the double-column output routine for subsequent pages. | |
|   \output = {\doublecolumnout}% | |
|   % | |
|   % Change the page size parameters.  We could do this once outside this | |
|   % routine, in each of @smallbook, @afourpaper, and the default 8.5x11 | |
|   % format, but then we repeat the same computation.  Repeating a couple | |
|   % of assignments once per index is clearly meaningless for the | |
|   % execution time, so we may as well do it in one place. | |
|   % | |
|   % First we halve the line length, less a little for the gutter between | |
|   % the columns.  We compute the gutter based on the line length, so it | |
|   % changes automatically with the paper format.  The magic constant | |
|   % below is chosen so that the gutter has the same value (well, +-<1pt) | |
|   % as it did when we hard-coded it. | |
|   % | |
|   % We put the result in a separate register, \doublecolumhsize, so we | |
|   % can restore it in \pagesofar, after \hsize itself has (potentially) | |
|   % been clobbered. | |
|   % | |
|   \doublecolumnhsize = \hsize | |
|     \advance\doublecolumnhsize by -.04154\hsize | |
|     \divide\doublecolumnhsize by 2 | |
|   \hsize = \doublecolumnhsize | |
|   % | |
|   % Double the \vsize as well.  (We don't need a separate register here, | |
|   % since nobody clobbers \vsize.) | |
|   \advance\vsize by -\ht\partialpage | |
|   \vsize = 2\vsize | |
| } | |
|  | |
| % The double-column output routine for all double-column pages except | |
| % the last. | |
| % | |
| \def\doublecolumnout{% | |
|   \splittopskip=\topskip \splitmaxdepth=\maxdepth | |
|   % Get the available space for the double columns -- the normal | |
|   % (undoubled) page height minus any material left over from the | |
|   % previous page. | |
|   \dimen@ = \vsize | |
|   \divide\dimen@ by 2 | |
|   % | |
|   % box0 will be the left-hand column, box2 the right. | |
|   \setbox0=\vsplit255 to\dimen@ \setbox2=\vsplit255 to\dimen@ | |
|   \onepageout\pagesofar | |
|   \unvbox255 | |
|   \penalty\outputpenalty | |
| } | |
| \def\pagesofar{% | |
|   % Re-output the contents of the output page -- any previous material, | |
|   % followed by the two boxes we just split, in box0 and box2. | |
|   \unvbox\partialpage | |
|   % | |
|   \hsize = \doublecolumnhsize | |
|   \wd0=\hsize \wd2=\hsize | |
|   \hbox to\pagewidth{\box0\hfil\box2}% | |
| } | |
| \def\enddoublecolumns{% | |
|   \output = {% | |
|     % Split the last of the double-column material.  Leave it on the | |
|     % current page, no automatic page break. | |
|     \balancecolumns | |
|     % | |
|     % If we end up splitting too much material for the current page, | |
|     % though, there will be another page break right after this \output | |
|     % invocation ends.  Having called \balancecolumns once, we do not | |
|     % want to call it again.  Therefore, reset \output to its normal | |
|     % definition right away.  (We hope \balancecolumns will never be | |
|     % called on to balance too much material, but if it is, this makes | |
|     % the output somewhat more palatable.) | |
|     \global\output = {\onepageout{\pagecontents\PAGE}}% | |
|   }% | |
|   \eject | |
|   \endgroup % started in \begindoublecolumns | |
|   % | |
|   % \pagegoal was set to the doubled \vsize above, since we restarted | |
|   % the current page.  We're now back to normal single-column | |
|   % typesetting, so reset \pagegoal to the normal \vsize (after the | |
|   % \endgroup where \vsize got restored). | |
|   \pagegoal = \vsize | |
| } | |
| \def\balancecolumns{% | |
|   % Called at the end of the double column material. | |
|   \setbox0 = \vbox{\unvbox255}% like \box255 but more efficient, see p.120. | |
|   \dimen@ = \ht0 | |
|   \advance\dimen@ by \topskip | |
|   \advance\dimen@ by-\baselineskip | |
|   \divide\dimen@ by 2 % target to split to | |
|   %debug\message{final 2-column material height=\the\ht0, target=\the\dimen@.}% | |
|   \splittopskip = \topskip | |
|   % Loop until we get a decent breakpoint. | |
|   {% | |
|     \vbadness = 10000 | |
|     \loop | |
|       \global\setbox3 = \copy0 | |
|       \global\setbox1 = \vsplit3 to \dimen@ | |
|     \ifdim\ht3>\dimen@ | |
|       \global\advance\dimen@ by 1pt | |
|     \repeat | |
|   }% | |
|   %debug\message{split to \the\dimen@, column heights: \the\ht1, \the\ht3.}% | |
|   \setbox0=\vbox to\dimen@{\unvbox1}% | |
|   \setbox2=\vbox to\dimen@{\unvbox3}% | |
|   % | |
|   \pagesofar | |
| } | |
| \catcode`\@ = \other | |
|  | |
|  | |
| \message{sectioning,} | |
| % Chapters, sections, etc. | |
|  | |
| \newcount\chapno | |
| \newcount\secno        \secno=0 | |
| \newcount\subsecno     \subsecno=0 | |
| \newcount\subsubsecno  \subsubsecno=0 | |
|  | |
| % This counter is funny since it counts through charcodes of letters A, B, ... | |
| \newcount\appendixno  \appendixno = `\@ | |
| % \def\appendixletter{\char\the\appendixno} | |
| % We do the following for the sake of pdftex, which needs the actual | |
| % letter in the expansion, not just typeset. | |
| \def\appendixletter{% | |
|   \ifnum\appendixno=`A A% | |
|   \else\ifnum\appendixno=`B B% | |
|   \else\ifnum\appendixno=`C C% | |
|   \else\ifnum\appendixno=`D D% | |
|   \else\ifnum\appendixno=`E E% | |
|   \else\ifnum\appendixno=`F F% | |
|   \else\ifnum\appendixno=`G G% | |
|   \else\ifnum\appendixno=`H H% | |
|   \else\ifnum\appendixno=`I I% | |
|   \else\ifnum\appendixno=`J J% | |
|   \else\ifnum\appendixno=`K K% | |
|   \else\ifnum\appendixno=`L L% | |
|   \else\ifnum\appendixno=`M M% | |
|   \else\ifnum\appendixno=`N N% | |
|   \else\ifnum\appendixno=`O O% | |
|   \else\ifnum\appendixno=`P P% | |
|   \else\ifnum\appendixno=`Q Q% | |
|   \else\ifnum\appendixno=`R R% | |
|   \else\ifnum\appendixno=`S S% | |
|   \else\ifnum\appendixno=`T T% | |
|   \else\ifnum\appendixno=`U U% | |
|   \else\ifnum\appendixno=`V V% | |
|   \else\ifnum\appendixno=`W W% | |
|   \else\ifnum\appendixno=`X X% | |
|   \else\ifnum\appendixno=`Y Y% | |
|   \else\ifnum\appendixno=`Z Z% | |
|   % The \the is necessary, despite appearances, because \appendixletter is | |
|   % expanded while writing the .toc file.  \char\appendixno is not | |
|   % expandable, thus it is written literally, thus all appendixes come out | |
|   % with the same letter (or @) in the toc without it. | |
|   \else\char\the\appendixno | |
|   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi | |
|   \fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi} | |
|  | |
| % Each @chapter defines this as the name of the chapter. | |
| % page headings and footings can use it.  @section does likewise. | |
| \def\thischapter{} | |
| \def\thissection{} | |
|  | |
| \newcount\absseclevel % used to calculate proper heading level | |
| \newcount\secbase\secbase=0 % @raise/lowersections modify this count | |
|  | |
| % @raisesections: treat @section as chapter, @subsection as section, etc. | |
| \def\raisesections{\global\advance\secbase by -1} | |
| \let\up=\raisesections % original BFox name | |
|  | |
| % @lowersections: treat @chapter as section, @section as subsection, etc. | |
| \def\lowersections{\global\advance\secbase by 1} | |
| \let\down=\lowersections % original BFox name | |
|  | |
| % Choose a numbered-heading macro | |
| % #1 is heading level if unmodified by @raisesections or @lowersections | |
| % #2 is text for heading | |
| \def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1 | |
| \ifcase\absseclevel | |
|   \chapterzzz{#2} | |
| \or | |
|   \seczzz{#2} | |
| \or | |
|   \numberedsubseczzz{#2} | |
| \or | |
|   \numberedsubsubseczzz{#2} | |
| \else | |
|   \ifnum \absseclevel<0 | |
|     \chapterzzz{#2} | |
|   \else | |
|     \numberedsubsubseczzz{#2} | |
|   \fi | |
| \fi | |
| } | |
|  | |
| % like \numhead, but chooses appendix heading levels | |
| \def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1 | |
| \ifcase\absseclevel | |
|   \appendixzzz{#2} | |
| \or | |
|   \appendixsectionzzz{#2} | |
| \or | |
|   \appendixsubseczzz{#2} | |
| \or | |
|   \appendixsubsubseczzz{#2} | |
| \else | |
|   \ifnum \absseclevel<0 | |
|     \appendixzzz{#2} | |
|   \else | |
|     \appendixsubsubseczzz{#2} | |
|   \fi | |
| \fi | |
| } | |
|  | |
| % like \numhead, but chooses numberless heading levels | |
| \def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1 | |
| \ifcase\absseclevel | |
|   \unnumberedzzz{#2} | |
| \or | |
|   \unnumberedseczzz{#2} | |
| \or | |
|   \unnumberedsubseczzz{#2} | |
| \or | |
|   \unnumberedsubsubseczzz{#2} | |
| \else | |
|   \ifnum \absseclevel<0 | |
|     \unnumberedzzz{#2} | |
|   \else | |
|     \unnumberedsubsubseczzz{#2} | |
|   \fi | |
| \fi | |
| } | |
|  | |
| % @chapter, @appendix, @unnumbered. | |
| \def\thischaptername{No Chapter Title} | |
| \outer\def\chapter{\parsearg\chapteryyy} | |
| \def\chapteryyy #1{\numhead0{#1}} % normally numhead0 calls chapterzzz | |
| \def\chapterzzz #1{% | |
| \secno=0 \subsecno=0 \subsubsecno=0 | |
| \global\advance \chapno by 1 \message{\putwordChapter\space \the\chapno}% | |
| \chapmacro {#1}{\the\chapno}% | |
| \gdef\thissection{#1}% | |
| \gdef\thischaptername{#1}% | |
| % We don't substitute the actual chapter name into \thischapter | |
| % because we don't want its macros evaluated now. | |
| \xdef\thischapter{\putwordChapter{} \the\chapno: \noexpand\thischaptername}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}% | |
|                                   {\the\chapno}}}% | |
| \temp | |
| \donoderef | |
| \global\let\section = \numberedsec | |
| \global\let\subsection = \numberedsubsec | |
| \global\let\subsubsection = \numberedsubsubsec | |
| } | |
|  | |
| \outer\def\appendix{\parsearg\appendixyyy} | |
| \def\appendixyyy #1{\apphead0{#1}} % normally apphead0 calls appendixzzz | |
| \def\appendixzzz #1{% | |
| \secno=0 \subsecno=0 \subsubsecno=0 | |
| \global\advance \appendixno by 1 | |
| \message{\putwordAppendix\space \appendixletter}% | |
| \chapmacro {#1}{\putwordAppendix{} \appendixletter}% | |
| \gdef\thissection{#1}% | |
| \gdef\thischaptername{#1}% | |
| \xdef\thischapter{\putwordAppendix{} \appendixletter: \noexpand\thischaptername}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash chapentry{\the\toks0}% | |
|                        {\putwordAppendix{} \appendixletter}}}% | |
| \temp | |
| \appendixnoderef | |
| \global\let\section = \appendixsec | |
| \global\let\subsection = \appendixsubsec | |
| \global\let\subsubsection = \appendixsubsubsec | |
| } | |
|  | |
| % @centerchap is like @unnumbered, but the heading is centered. | |
| \outer\def\centerchap{\parsearg\centerchapyyy} | |
| \def\centerchapyyy #1{{\let\unnumbchapmacro=\centerchapmacro \unnumberedyyy{#1}}} | |
|  | |
| % @top is like @unnumbered. | |
| \outer\def\top{\parsearg\unnumberedyyy} | |
|  | |
| \outer\def\unnumbered{\parsearg\unnumberedyyy} | |
| \def\unnumberedyyy #1{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz | |
| \def\unnumberedzzz #1{% | |
| \secno=0 \subsecno=0 \subsubsecno=0 | |
| % | |
| % This used to be simply \message{#1}, but TeX fully expands the | |
| % argument to \message.  Therefore, if #1 contained @-commands, TeX | |
| % expanded them.  For example, in `@unnumbered The @cite{Book}', TeX | |
| % expanded @cite (which turns out to cause errors because \cite is meant | |
| % to be executed, not expanded). | |
| % | |
| % Anyway, we don't want the fully-expanded definition of @cite to appear | |
| % as a result of the \message, we just want `@cite' itself.  We use | |
| % \the<toks register> to achieve this: TeX expands \the<toks> only once, | |
| % simply yielding the contents of <toks register>.  (We also do this for | |
| % the toc entries.) | |
| \toks0 = {#1}\message{(\the\toks0)}% | |
| % | |
| \unnumbchapmacro {#1}% | |
| \gdef\thischapter{#1}\gdef\thissection{#1}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash unnumbchapentry{\the\toks0}}}% | |
| \temp | |
| \unnumbnoderef | |
| \global\let\section = \unnumberedsec | |
| \global\let\subsection = \unnumberedsubsec | |
| \global\let\subsubsection = \unnumberedsubsubsec | |
| } | |
|  | |
| % Sections. | |
| \outer\def\numberedsec{\parsearg\secyyy} | |
| \def\secyyy #1{\numhead1{#1}} % normally calls seczzz | |
| \def\seczzz #1{% | |
| \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 % | |
| \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}% | |
|                                   {\the\chapno}{\the\secno}}}% | |
| \temp | |
| \donoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\appendixsection{\parsearg\appendixsecyyy} | |
| \outer\def\appendixsec{\parsearg\appendixsecyyy} | |
| \def\appendixsecyyy #1{\apphead1{#1}} % normally calls appendixsectionzzz | |
| \def\appendixsectionzzz #1{% | |
| \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 % | |
| \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash secentry{\the\toks0}% | |
|                                   {\appendixletter}{\the\secno}}}% | |
| \temp | |
| \appendixnoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\unnumberedsec{\parsearg\unnumberedsecyyy} | |
| \def\unnumberedsecyyy #1{\unnmhead1{#1}} % normally calls unnumberedseczzz | |
| \def\unnumberedseczzz #1{% | |
| \plainsecheading {#1}\gdef\thissection{#1}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash unnumbsecentry{\the\toks0}}}% | |
| \temp | |
| \unnumbnoderef | |
| \nobreak | |
| } | |
|  | |
| % Subsections. | |
| \outer\def\numberedsubsec{\parsearg\numberedsubsecyyy} | |
| \def\numberedsubsecyyy #1{\numhead2{#1}} % normally calls numberedsubseczzz | |
| \def\numberedsubseczzz #1{% | |
| \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 % | |
| \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}% | |
|                                     {\the\chapno}{\the\secno}{\the\subsecno}}}% | |
| \temp | |
| \donoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\appendixsubsec{\parsearg\appendixsubsecyyy} | |
| \def\appendixsubsecyyy #1{\apphead2{#1}} % normally calls appendixsubseczzz | |
| \def\appendixsubseczzz #1{% | |
| \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 % | |
| \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash subsecentry{\the\toks0}% | |
|                                 {\appendixletter}{\the\secno}{\the\subsecno}}}% | |
| \temp | |
| \appendixnoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\unnumberedsubsec{\parsearg\unnumberedsubsecyyy} | |
| \def\unnumberedsubsecyyy #1{\unnmhead2{#1}} %normally calls unnumberedsubseczzz | |
| \def\unnumberedsubseczzz #1{% | |
| \plainsubsecheading {#1}\gdef\thissection{#1}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsecentry% | |
|                                     {\the\toks0}}}% | |
| \temp | |
| \unnumbnoderef | |
| \nobreak | |
| } | |
|  | |
| % Subsubsections. | |
| \outer\def\numberedsubsubsec{\parsearg\numberedsubsubsecyyy} | |
| \def\numberedsubsubsecyyy #1{\numhead3{#1}} % normally numberedsubsubseczzz | |
| \def\numberedsubsubseczzz #1{% | |
| \gdef\thissection{#1}\global\advance \subsubsecno by 1 % | |
| \subsubsecheading {#1} | |
|   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}% | |
|   {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}% | |
| \temp | |
| \donoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\appendixsubsubsec{\parsearg\appendixsubsubsecyyy} | |
| \def\appendixsubsubsecyyy #1{\apphead3{#1}} % normally appendixsubsubseczzz | |
| \def\appendixsubsubseczzz #1{% | |
| \gdef\thissection{#1}\global\advance \subsubsecno by 1 % | |
| \subsubsecheading {#1} | |
|   {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash subsubsecentry{\the\toks0}% | |
|   {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}}}% | |
| \temp | |
| \appendixnoderef | |
| \nobreak | |
| } | |
|  | |
| \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubsecyyy} | |
| \def\unnumberedsubsubsecyyy #1{\unnmhead3{#1}} %normally unnumberedsubsubseczzz | |
| \def\unnumberedsubsubseczzz #1{% | |
| \plainsubsubsecheading {#1}\gdef\thissection{#1}% | |
| \toks0 = {#1}% | |
| \edef\temp{\noexpand\writetocentry{\realbackslash unnumbsubsubsecentry% | |
|                                     {\the\toks0}}}% | |
| \temp | |
| \unnumbnoderef | |
| \nobreak | |
| } | |
|  | |
| % These are variants which are not "outer", so they can appear in @ifinfo. | |
| % Actually, they should now be obsolete; ordinary section commands should work. | |
| \def\infotop{\parsearg\unnumberedzzz} | |
| \def\infounnumbered{\parsearg\unnumberedzzz} | |
| \def\infounnumberedsec{\parsearg\unnumberedseczzz} | |
| \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz} | |
| \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz} | |
|  | |
| \def\infoappendix{\parsearg\appendixzzz} | |
| \def\infoappendixsec{\parsearg\appendixseczzz} | |
| \def\infoappendixsubsec{\parsearg\appendixsubseczzz} | |
| \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz} | |
|  | |
| \def\infochapter{\parsearg\chapterzzz} | |
| \def\infosection{\parsearg\sectionzzz} | |
| \def\infosubsection{\parsearg\subsectionzzz} | |
| \def\infosubsubsection{\parsearg\subsubsectionzzz} | |
|  | |
| % These macros control what the section commands do, according | |
| % to what kind of chapter we are in (ordinary, appendix, or unnumbered). | |
| % Define them by default for a numbered chapter. | |
| \global\let\section = \numberedsec | |
| \global\let\subsection = \numberedsubsec | |
| \global\let\subsubsection = \numberedsubsubsec | |
|  | |
| % Define @majorheading, @heading and @subheading | |
|  | |
| % NOTE on use of \vbox for chapter headings, section headings, and such: | |
| %       1) We use \vbox rather than the earlier \line to permit | |
| %          overlong headings to fold. | |
| %       2) \hyphenpenalty is set to 10000 because hyphenation in a | |
| %          heading is obnoxious; this forbids it. | |
| %       3) Likewise, headings look best if no \parindent is used, and | |
| %          if justification is not attempted.  Hence \raggedright. | |
|  | |
|  | |
| \def\majorheading{\parsearg\majorheadingzzz} | |
| \def\majorheadingzzz #1{% | |
| {\advance\chapheadingskip by 10pt \chapbreak }% | |
| {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 | |
|                   \parindent=0pt\raggedright | |
|                   \rm #1\hfill}}\bigskip \par\penalty 200} | |
|  | |
| \def\chapheading{\parsearg\chapheadingzzz} | |
| \def\chapheadingzzz #1{\chapbreak % | |
| {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 | |
|                   \parindent=0pt\raggedright | |
|                   \rm #1\hfill}}\bigskip \par\penalty 200} | |
|  | |
| % @heading, @subheading, @subsubheading. | |
| \def\heading{\parsearg\plainsecheading} | |
| \def\subheading{\parsearg\plainsubsecheading} | |
| \def\subsubheading{\parsearg\plainsubsubsecheading} | |
|  | |
| % These macros generate a chapter, section, etc. heading only | |
| % (including whitespace, linebreaking, etc. around it), | |
| % given all the information in convenient, parsed form. | |
|  | |
| %%% Args are the skip and penalty (usually negative) | |
| \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi} | |
|  | |
| \def\setchapterstyle #1 {\csname CHAPF#1\endcsname} | |
|  | |
| %%% Define plain chapter starts, and page on/off switching for it | |
| % Parameter controlling skip before chapter headings (if needed) | |
|  | |
| \newskip\chapheadingskip | |
|  | |
| \def\chapbreak{\dobreak \chapheadingskip {-4000}} | |
| \def\chappager{\par\vfill\supereject} | |
| \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi} | |
|  | |
| \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname} | |
|  | |
| \def\CHAPPAGoff{% | |
| \global\let\contentsalignmacro = \chappager | |
| \global\let\pchapsepmacro=\chapbreak | |
| \global\let\pagealignmacro=\chappager} | |
|  | |
| \def\CHAPPAGon{% | |
| \global\let\contentsalignmacro = \chappager | |
| \global\let\pchapsepmacro=\chappager | |
| \global\let\pagealignmacro=\chappager | |
| \global\def\HEADINGSon{\HEADINGSsingle}} | |
|  | |
| \def\CHAPPAGodd{ | |
| \global\let\contentsalignmacro = \chapoddpage | |
| \global\let\pchapsepmacro=\chapoddpage | |
| \global\let\pagealignmacro=\chapoddpage | |
| \global\def\HEADINGSon{\HEADINGSdouble}} | |
|  | |
| \CHAPPAGon | |
|  | |
| \def\CHAPFplain{ | |
| \global\let\chapmacro=\chfplain | |
| \global\let\unnumbchapmacro=\unnchfplain | |
| \global\let\centerchapmacro=\centerchfplain} | |
|  | |
| % Plain chapter opening. | |
| % #1 is the text, #2 the chapter number or empty if unnumbered. | |
| \def\chfplain#1#2{% | |
|   \pchapsepmacro | |
|   {% | |
|     \chapfonts \rm | |
|     \def\chapnum{#2}% | |
|     \setbox0 = \hbox{#2\ifx\chapnum\empty\else\enspace\fi}% | |
|     \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright | |
|           \hangindent = \wd0 \centerparametersmaybe | |
|           \unhbox0 #1\par}% | |
|   }% | |
|   \nobreak\bigskip % no page break after a chapter title | |
|   \nobreak | |
| } | |
|  | |
| % Plain opening for unnumbered. | |
| \def\unnchfplain#1{\chfplain{#1}{}} | |
|  | |
| % @centerchap -- centered and unnumbered. | |
| \let\centerparametersmaybe = \relax | |
| \def\centerchfplain#1{{% | |
|   \def\centerparametersmaybe{% | |
|     \advance\rightskip by 3\rightskip | |
|     \leftskip = \rightskip | |
|     \parfillskip = 0pt | |
|   }% | |
|   \chfplain{#1}{}% | |
| }} | |
|  | |
| \CHAPFplain % The default | |
|  | |
| \def\unnchfopen #1{% | |
| \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 | |
|                        \parindent=0pt\raggedright | |
|                        \rm #1\hfill}}\bigskip \par\nobreak | |
| } | |
|  | |
| \def\chfopen #1#2{\chapoddpage {\chapfonts | |
| \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}% | |
| \par\penalty 5000 % | |
| } | |
|  | |
| \def\centerchfopen #1{% | |
| \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000 | |
|                        \parindent=0pt | |
|                        \hfill {\rm #1}\hfill}}\bigskip \par\nobreak | |
| } | |
|  | |
| \def\CHAPFopen{ | |
| \global\let\chapmacro=\chfopen | |
| \global\let\unnumbchapmacro=\unnchfopen | |
| \global\let\centerchapmacro=\centerchfopen} | |
|  | |
|  | |
| % Section titles. | |
| \newskip\secheadingskip | |
| \def\secheadingbreak{\dobreak \secheadingskip {-1000}} | |
| \def\secheading#1#2#3{\sectionheading{sec}{#2.#3}{#1}} | |
| \def\plainsecheading#1{\sectionheading{sec}{}{#1}} | |
|  | |
| % Subsection titles. | |
| \newskip \subsecheadingskip | |
| \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}} | |
| \def\subsecheading#1#2#3#4{\sectionheading{subsec}{#2.#3.#4}{#1}} | |
| \def\plainsubsecheading#1{\sectionheading{subsec}{}{#1}} | |
|  | |
| % Subsubsection titles. | |
| \let\subsubsecheadingskip = \subsecheadingskip | |
| \let\subsubsecheadingbreak = \subsecheadingbreak | |
| \def\subsubsecheading#1#2#3#4#5{\sectionheading{subsubsec}{#2.#3.#4.#5}{#1}} | |
| \def\plainsubsubsecheading#1{\sectionheading{subsubsec}{}{#1}} | |
|  | |
|  | |
| % Print any size section title. | |
| % | |
| % #1 is the section type (sec/subsec/subsubsec), #2 is the section | |
| % number (maybe empty), #3 the text. | |
| \def\sectionheading#1#2#3{% | |
|   {% | |
|     \expandafter\advance\csname #1headingskip\endcsname by \parskip | |
|     \csname #1headingbreak\endcsname | |
|   }% | |
|   {% | |
|     % Switch to the right set of fonts. | |
|     \csname #1fonts\endcsname \rm | |
|     % | |
|     % Only insert the separating space if we have a section number. | |
|     \def\secnum{#2}% | |
|     \setbox0 = \hbox{#2\ifx\secnum\empty\else\enspace\fi}% | |
|     % | |
|     \vbox{\hyphenpenalty=10000 \tolerance=5000 \parindent=0pt \raggedright | |
|           \hangindent = \wd0 % zero if no section number | |
|           \unhbox0 #3}% | |
|   }% | |
|   \ifdim\parskip<10pt \nobreak\kern10pt\nobreak\kern-\parskip\fi \nobreak | |
| } | |
|  | |
|  | |
| \message{toc,} | |
| % Table of contents. | |
| \newwrite\tocfile | |
|  | |
| % Write an entry to the toc file, opening it if necessary. | |
| % Called from @chapter, etc.  We supply {\folio} at the end of the | |
| % argument, which will end up as the last argument to the \...entry macro. | |
| % | |
| % We open the .toc file here instead of at @setfilename or any other | |
| % given time so that @contents can be put in the document anywhere. | |
| % | |
| \newif\iftocfileopened | |
| \def\writetocentry#1{% | |
|   \iftocfileopened\else | |
|     \immediate\openout\tocfile = \jobname.toc | |
|     \global\tocfileopenedtrue | |
|   \fi | |
|   \iflinks \write\tocfile{#1{\folio}}\fi | |
| } | |
|  | |
| \newskip\contentsrightmargin \contentsrightmargin=1in | |
| \newcount\savepageno | |
| \newcount\lastnegativepageno \lastnegativepageno = -1 | |
|  | |
| % Finish up the main text and prepare to read what we've written | |
| % to \tocfile. | |
| % | |
| \def\startcontents#1{% | |
|    % If @setchapternewpage on, and @headings double, the contents should | |
|    % start on an odd page, unlike chapters.  Thus, we maintain | |
|    % \contentsalignmacro in parallel with \pagealignmacro. | |
|    % From: Torbjorn Granlund <tege@matematik.su.se> | |
|    \contentsalignmacro | |
|    \immediate\closeout\tocfile | |
|    % | |
|    % Don't need to put `Contents' or `Short Contents' in the headline. | |
|    % It is abundantly clear what they are. | |
|    \unnumbchapmacro{#1}\def\thischapter{}% | |
|    \savepageno = \pageno | |
|    \begingroup                  % Set up to handle contents files properly. | |
|       \catcode`\\=0  \catcode`\{=1  \catcode`\}=2  \catcode`\@=11 | |
|       % We can't do this, because then an actual ^ in a section | |
|       % title fails, e.g., @chapter ^ -- exponentiation.  --karl, 9jul97. | |
|       %\catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi | |
|       \raggedbottom             % Worry more about breakpoints than the bottom. | |
|       \advance\hsize by -\contentsrightmargin % Don't use the full line length. | |
|       % | |
|       % Roman numerals for page numbers. | |
|       \ifnum \pageno>0 \pageno = \lastnegativepageno \fi | |
| } | |
|  | |
|  | |
| % Normal (long) toc. | |
| \def\contents{% | |
|    \startcontents{\putwordTOC}% | |
|      \openin 1 \jobname.toc | |
|      \ifeof 1 \else | |
|        \closein 1 | |
|        \input \jobname.toc | |
|      \fi | |
|      \vfill \eject | |
|      \contentsalignmacro % in case @setchapternewpage odd is in effect | |
|      \pdfmakeoutlines | |
|    \endgroup | |
|    \lastnegativepageno = \pageno | |
|    \pageno = \savepageno | |
| } | |
|  | |
| % And just the chapters. | |
| \def\summarycontents{% | |
|    \startcontents{\putwordShortTOC}% | |
|       % | |
|       \let\chapentry = \shortchapentry | |
|       \let\unnumbchapentry = \shortunnumberedentry | |
|       % We want a true roman here for the page numbers. | |
|       \secfonts | |
|       \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl | |
|       \rm | |
|       \hyphenpenalty = 10000 | |
|       \advance\baselineskip by 1pt % Open it up a little. | |
|       \def\secentry ##1##2##3##4{} | |
|       \def\unnumbsecentry ##1##2{} | |
|       \def\subsecentry ##1##2##3##4##5{} | |
|       \def\unnumbsubsecentry ##1##2{} | |
|       \def\subsubsecentry ##1##2##3##4##5##6{} | |
|       \def\unnumbsubsubsecentry ##1##2{} | |
|       \openin 1 \jobname.toc | |
|       \ifeof 1 \else | |
|         \closein 1 | |
|         \input \jobname.toc | |
|       \fi | |
|      \vfill \eject | |
|      \contentsalignmacro % in case @setchapternewpage odd is in effect | |
|    \endgroup | |
|    \lastnegativepageno = \pageno | |
|    \pageno = \savepageno | |
| } | |
| \let\shortcontents = \summarycontents | |
|  | |
| \ifpdf | |
|   \pdfcatalog{/PageMode /UseOutlines}% | |
| \fi | |
|  | |
| % These macros generate individual entries in the table of contents. | |
| % The first argument is the chapter or section name. | |
| % The last argument is the page number. | |
| % The arguments in between are the chapter number, section number, ... | |
|  | |
| % Chapter-level things, for both the long and short contents. | |
| \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}} | |
|  | |
| % See comments in \dochapentry re vbox and related settings | |
| \def\shortchapentry#1#2#3{% | |
|   \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno\bgroup#3\egroup}% | |
| } | |
|  | |
| % Typeset the label for a chapter or appendix for the short contents. | |
| % The arg is, e.g. `Appendix A' for an appendix, or `3' for a chapter. | |
| % We could simplify the code here by writing out an \appendixentry | |
| % command in the toc file for appendices, instead of using \chapentry | |
| % for both, but it doesn't seem worth it. | |
| % | |
| \newdimen\shortappendixwidth | |
| % | |
| \def\shortchaplabel#1{% | |
|   % Compute width of word "Appendix", may change with language. | |
|   \setbox0 = \hbox{\shortcontrm \putwordAppendix}% | |
|   \shortappendixwidth = \wd0 | |
|   % | |
|   % We typeset #1 in a box of constant width, regardless of the text of | |
|   % #1, so the chapter titles will come out aligned. | |
|   \setbox0 = \hbox{#1}% | |
|   \dimen0 = \ifdim\wd0 > \shortappendixwidth \shortappendixwidth \else 0pt \fi | |
|   % | |
|   % This space should be plenty, since a single number is .5em, and the | |
|   % widest letter (M) is 1em, at least in the Computer Modern fonts. | |
|   % (This space doesn't include the extra space that gets added after | |
|   % the label; that gets put in by \shortchapentry above.) | |
|   \advance\dimen0 by 1.1em | |
|   \hbox to \dimen0{#1\hfil}% | |
| } | |
|  | |
| \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}} | |
| \def\shortunnumberedentry#1#2{\tocentry{#1}{\doshortpageno\bgroup#2\egroup}} | |
|  | |
| % Sections. | |
| \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}} | |
| \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}} | |
|  | |
| % Subsections. | |
| \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}} | |
| \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}} | |
|  | |
| % And subsubsections. | |
| \def\subsubsecentry#1#2#3#4#5#6{% | |
|   \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}} | |
| \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}} | |
|  | |
| % This parameter controls the indentation of the various levels. | |
| \newdimen\tocindent \tocindent = 3pc | |
|  | |
| % Now for the actual typesetting. In all these, #1 is the text and #2 is the | |
| % page number. | |
| % | |
| % If the toc has to be broken over pages, we want it to be at chapters | |
| % if at all possible; hence the \penalty. | |
| \def\dochapentry#1#2{% | |
|    \penalty-300 \vskip1\baselineskip plus.33\baselineskip minus.25\baselineskip | |
|    \begingroup | |
|      \chapentryfonts | |
|      \tocentry{#1}{\dopageno\bgroup#2\egroup}% | |
|    \endgroup | |
|    \nobreak\vskip .25\baselineskip plus.1\baselineskip | |
| } | |
|  | |
| \def\dosecentry#1#2{\begingroup | |
|   \secentryfonts \leftskip=\tocindent | |
|   \tocentry{#1}{\dopageno\bgroup#2\egroup}% | |
| \endgroup} | |
|  | |
| \def\dosubsecentry#1#2{\begingroup | |
|   \subsecentryfonts \leftskip=2\tocindent | |
|   \tocentry{#1}{\dopageno\bgroup#2\egroup}% | |
| \endgroup} | |
|  | |
| \def\dosubsubsecentry#1#2{\begingroup | |
|   \subsubsecentryfonts \leftskip=3\tocindent | |
|   \tocentry{#1}{\dopageno\bgroup#2\egroup}% | |
| \endgroup} | |
|  | |
| % Final typesetting of a toc entry; we use the same \entry macro as for | |
| % the index entries, but we want to suppress hyphenation here.  (We | |
| % can't do that in the \entry macro, since index entries might consist | |
| % of hyphenated-identifiers-that-do-not-fit-on-a-line-and-nothing-else.) | |
| \def\tocentry#1#2{\begingroup | |
|   \vskip 0pt plus1pt % allow a little stretch for the sake of nice page breaks | |
|   % Do not use \turnoffactive in these arguments.  Since the toc is | |
|   % typeset in cmr, so characters such as _ would come out wrong; we | |
|   % have to do the usual translation tricks. | |
|   \entry{#1}{#2}% | |
| \endgroup} | |
|  | |
| % Space between chapter (or whatever) number and the title. | |
| \def\labelspace{\hskip1em \relax} | |
|  | |
| \def\dopageno#1{{\rm #1}} | |
| \def\doshortpageno#1{{\rm #1}} | |
|  | |
| \def\chapentryfonts{\secfonts \rm} | |
| \def\secentryfonts{\textfonts} | |
| \let\subsecentryfonts = \textfonts | |
| \let\subsubsecentryfonts = \textfonts | |
|  | |
|  | |
| \message{environments,} | |
| % @foo ... @end foo. | |
|  | |
| % Since these characters are used in examples, it should be an even number of | |
| % \tt widths. Each \tt character is 1en, so two makes it 1em. | |
| % Furthermore, these definitions must come after we define our fonts. | |
| \newbox\dblarrowbox    \newbox\longdblarrowbox | |
| \newbox\pushcharbox    \newbox\bullbox | |
| \newbox\equivbox       \newbox\errorbox | |
|  | |
| %{\tentt | |
| %\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil} | |
| %\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil} | |
| %\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil} | |
| %\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil} | |
| % Adapted from the manmac format (p.420 of TeXbook) | |
| %\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex | |
| %                                      depth .1ex\hfil} | |
| %} | |
|  | |
| % @point{}, @result{}, @expansion{}, @print{}, @equiv{}. | |
| \def\point{$\star$} | |
| \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}} | |
| \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}} | |
| \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}} | |
| \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}} | |
|  | |
| % Adapted from the TeXbook's \boxit. | |
| {\tentt \global\dimen0 = 3em}% Width of the box. | |
| \dimen2 = .55pt % Thickness of rules | |
| % The text. (`r' is open on the right, `e' somewhat less so on the left.) | |
| \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt} | |
|  | |
| \global\setbox\errorbox=\hbox to \dimen0{\hfil | |
|    \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right. | |
|    \advance\hsize by -2\dimen2 % Rules. | |
|    \vbox{ | |
|       \hrule height\dimen2 | |
|       \hbox{\vrule width\dimen2 \kern3pt          % Space to left of text. | |
|          \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below. | |
|          \kern3pt\vrule width\dimen2}% Space to right. | |
|       \hrule height\dimen2} | |
|     \hfil} | |
|  | |
| % The @error{} command. | |
| \def\error{\leavevmode\lower.7ex\copy\errorbox} | |
|  | |
| % @tex ... @end tex    escapes into raw Tex temporarily. | |
| % One exception: @ is still an escape character, so that @end tex works. | |
| % But \@ or @@ will get a plain tex @ character. | |
|  | |
| \def\tex{\begingroup | |
|   \catcode `\\=0 \catcode `\{=1 \catcode `\}=2 | |
|   \catcode `\$=3 \catcode `\&=4 \catcode `\#=6 | |
|   \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie | |
|   \catcode `\%=14 | |
|   \catcode 43=12 % plus | |
|   \catcode`\"=12 | |
|   \catcode`\==12 | |
|   \catcode`\|=12 | |
|   \catcode`\<=12 | |
|   \catcode`\>=12 | |
|   \escapechar=`\\ | |
|   % | |
|   \let\b=\ptexb | |
|   \let\bullet=\ptexbullet | |
|   \let\c=\ptexc | |
|   \let\,=\ptexcomma | |
|   \let\.=\ptexdot | |
|   \let\dots=\ptexdots | |
|   \let\equiv=\ptexequiv | |
|   \let\!=\ptexexclam | |
|   \let\i=\ptexi | |
|   \let\{=\ptexlbrace | |
|   \let\+=\tabalign | |
|   \let\}=\ptexrbrace | |
|   \let\*=\ptexstar | |
|   \let\t=\ptext | |
|   % | |
|   \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}% | |
|   \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}% | |
|   \def\@{@}% | |
| \let\Etex=\endgroup} | |
|  | |
| % Define @lisp ... @endlisp. | |
| % @lisp does a \begingroup so it can rebind things, | |
| % including the definition of @endlisp (which normally is erroneous). | |
|  | |
| % Amount to narrow the margins by for @lisp. | |
| \newskip\lispnarrowing \lispnarrowing=0.4in | |
|  | |
| % This is the definition that ^^M gets inside @lisp, @example, and other | |
| % such environments.  \null is better than a space, since it doesn't | |
| % have any width. | |
| \def\lisppar{\null\endgraf} | |
|  | |
| % Make each space character in the input produce a normal interword | |
| % space in the output.  Don't allow a line break at this space, as this | |
| % is used only in environments like @example, where each line of input | |
| % should produce a line of output anyway. | |
| % | |
| {\obeyspaces % | |
| \gdef\sepspaces{\obeyspaces\let =\tie}} | |
|  | |
| % Define \obeyedspace to be our active space, whatever it is.  This is | |
| % for use in \parsearg. | |
| {\sepspaces% | |
| \global\let\obeyedspace= } | |
|  | |
| % This space is always present above and below environments. | |
| \newskip\envskipamount \envskipamount = 0pt | |
|  | |
| % Make spacing and below environment symmetrical.  We use \parskip here | |
| % to help in doing that, since in @example-like environments \parskip | |
| % is reset to zero; thus the \afterenvbreak inserts no space -- but the | |
| % start of the next paragraph will insert \parskip | |
| % | |
| \def\aboveenvbreak{{\advance\envskipamount by \parskip | |
| \endgraf \ifdim\lastskip<\envskipamount | |
| \removelastskip \penalty-50 \vskip\envskipamount \fi}} | |
|  | |
| \let\afterenvbreak = \aboveenvbreak | |
|  | |
| % \nonarrowing is a flag.  If "set", @lisp etc don't narrow margins. | |
| \let\nonarrowing=\relax | |
|  | |
| % @cartouche ... @end cartouche: draw rectangle w/rounded corners around | |
| % environment contents. | |
| \font\circle=lcircle10 | |
| \newdimen\circthick | |
| \newdimen\cartouter\newdimen\cartinner | |
| \newskip\normbskip\newskip\normpskip\newskip\normlskip | |
| \circthick=\fontdimen8\circle | |
| % | |
| \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth | |
| \def\ctr{{\hskip 6pt\circle\char'010}} | |
| \def\cbl{{\circle\char'012\hskip -6pt}} | |
| \def\cbr{{\hskip 6pt\circle\char'011}} | |
| \def\carttop{\hbox to \cartouter{\hskip\lskip | |
|         \ctl\leaders\hrule height\circthick\hfil\ctr | |
|         \hskip\rskip}} | |
| \def\cartbot{\hbox to \cartouter{\hskip\lskip | |
|         \cbl\leaders\hrule height\circthick\hfil\cbr | |
|         \hskip\rskip}} | |
| % | |
| \newskip\lskip\newskip\rskip | |
|  | |
| \long\def\cartouche{% | |
| \begingroup | |
|         \lskip=\leftskip \rskip=\rightskip | |
|         \leftskip=0pt\rightskip=0pt %we want these *outside*. | |
|         \cartinner=\hsize \advance\cartinner by-\lskip | |
|                           \advance\cartinner by-\rskip | |
|         \cartouter=\hsize | |
|         \advance\cartouter by 18.4pt % allow for 3pt kerns on either | |
| %                                    side, and for 6pt waste from | |
| %                                    each corner char, and rule thickness | |
|         \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip | |
|         % Flag to tell @lisp, etc., not to narrow margin. | |
|         \let\nonarrowing=\comment | |
|         \vbox\bgroup | |
|                 \baselineskip=0pt\parskip=0pt\lineskip=0pt | |
|                 \carttop | |
|                 \hbox\bgroup | |
|                         \hskip\lskip | |
|                         \vrule\kern3pt | |
|                         \vbox\bgroup | |
|                                 \hsize=\cartinner | |
|                                 \kern3pt | |
|                                 \begingroup | |
|                                         \baselineskip=\normbskip | |
|                                         \lineskip=\normlskip | |
|                                         \parskip=\normpskip | |
|                                         \vskip -\parskip | |
| \def\Ecartouche{% | |
|                                 \endgroup | |
|                                 \kern3pt | |
|                         \egroup | |
|                         \kern3pt\vrule | |
|                         \hskip\rskip | |
|                 \egroup | |
|                 \cartbot | |
|         \egroup | |
| \endgroup | |
| }} | |
|  | |
|  | |
| % This macro is called at the beginning of all the @example variants, | |
| % inside a group. | |
| \def\nonfillstart{% | |
|   \aboveenvbreak | |
|   \inENV % This group ends at the end of the body | |
|   \hfuzz = 12pt % Don't be fussy | |
|   \sepspaces % Make spaces be word-separators rather than space tokens. | |
|   \singlespace | |
|   \let\par = \lisppar % don't ignore blank lines | |
|   \obeylines % each line of input is a line of output | |
|   \parskip = 0pt | |
|   \parindent = 0pt | |
|   \emergencystretch = 0pt % don't try to avoid overfull boxes | |
|   % @cartouche defines \nonarrowing to inhibit narrowing | |
|   % at next level down. | |
|   \ifx\nonarrowing\relax | |
|     \advance \leftskip by \lispnarrowing | |
|     \exdentamount=\lispnarrowing | |
|     \let\exdent=\nofillexdent | |
|     \let\nonarrowing=\relax | |
|   \fi | |
| } | |
|  | |
| % Define the \E... control sequence only if we are inside the particular | |
| % environment, so the error checking in \end will work. | |
| % | |
| % To end an @example-like environment, we first end the paragraph (via | |
| % \afterenvbreak's vertical glue), and then the group.  That way we keep | |
| % the zero \parskip that the environments set -- \parskip glue will be | |
| % inserted at the beginning of the next paragraph in the document, after | |
| % the environment. | |
| % | |
| \def\nonfillfinish{\afterenvbreak\endgroup} | |
|  | |
| % @lisp: indented, narrowed, typewriter font. | |
| \def\lisp{\begingroup | |
|   \nonfillstart | |
|   \let\Elisp = \nonfillfinish | |
|   \tt | |
|   \let\kbdfont = \kbdexamplefont % Allow @kbd to do something special. | |
|   \gobble       % eat return | |
| } | |
|  | |
| % @example: Same as @lisp. | |
| \def\example{\begingroup \def\Eexample{\nonfillfinish\endgroup}\lisp} | |
|  | |
| % @small... is usually equivalent to the non-small (@smallbook | |
| % redefines).  We must call \example (or whatever) last in the | |
| % definition, since it reads the return following the @example (or | |
| % whatever) command. | |
| % | |
| % This actually allows (for example) @end display inside an | |
| % @smalldisplay.  Too bad, but makeinfo will catch the error anyway. | |
| % | |
| \def\smalldisplay{\begingroup\def\Esmalldisplay{\nonfillfinish\endgroup}\display} | |
| \def\smallexample{\begingroup\def\Esmallexample{\nonfillfinish\endgroup}\lisp} | |
| \def\smallformat{\begingroup\def\Esmallformat{\nonfillfinish\endgroup}\format} | |
| \def\smalllisp{\begingroup\def\Esmalllisp{\nonfillfinish\endgroup}\lisp} | |
|  | |
| % Real @smallexample and @smalllisp (when @smallbook): use smaller fonts. | |
| % Originally contributed by Pavel@xerox. | |
| \def\smalllispx{\begingroup | |
|   \def\Esmalllisp{\nonfillfinish\endgroup}% | |
|   \def\Esmallexample{\nonfillfinish\endgroup}% | |
|   \smallfonts | |
|   \lisp | |
| } | |
|  | |
| % @display: same as @lisp except keep current font. | |
| % | |
| \def\display{\begingroup | |
|   \nonfillstart | |
|   \let\Edisplay = \nonfillfinish | |
|   \gobble | |
| } | |
|  | |
| % @smalldisplay (when @smallbook): @display plus smaller fonts. | |
| % | |
| \def\smalldisplayx{\begingroup | |
|   \def\Esmalldisplay{\nonfillfinish\endgroup}% | |
|   \smallfonts \rm | |
|   \display | |
| } | |
|  | |
| % @format: same as @display except don't narrow margins. | |
| % | |
| \def\format{\begingroup | |
|   \let\nonarrowing = t | |
|   \nonfillstart | |
|   \let\Eformat = \nonfillfinish | |
|   \gobble | |
| } | |
|  | |
| % @smallformat (when @smallbook): @format plus smaller fonts. | |
| % | |
| \def\smallformatx{\begingroup | |
|   \def\Esmallformat{\nonfillfinish\endgroup}% | |
|   \smallfonts \rm | |
|   \format | |
| } | |
|  | |
| % @flushleft (same as @format). | |
| % | |
| \def\flushleft{\begingroup \def\Eflushleft{\nonfillfinish\endgroup}\format} | |
|  | |
| % @flushright. | |
| % | |
| \def\flushright{\begingroup | |
|   \let\nonarrowing = t | |
|   \nonfillstart | |
|   \let\Eflushright = \nonfillfinish | |
|   \advance\leftskip by 0pt plus 1fill | |
|   \gobble | |
| } | |
|  | |
| % @quotation does normal linebreaking (hence we can't use \nonfillstart) | |
| % and narrows the margins. | |
| % | |
| \def\quotation{% | |
|   \begingroup\inENV %This group ends at the end of the @quotation body | |
|   {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip | |
|   \singlespace | |
|   \parindent=0pt | |
|   % We have retained a nonzero parskip for the environment, since we're | |
|   % doing normal filling. So to avoid extra space below the environment... | |
|   \def\Equotation{\parskip = 0pt \nonfillfinish}% | |
|   % | |
|   % @cartouche defines \nonarrowing to inhibit narrowing at next level down. | |
|   \ifx\nonarrowing\relax | |
|     \advance\leftskip by \lispnarrowing | |
|     \advance\rightskip by \lispnarrowing | |
|     \exdentamount = \lispnarrowing | |
|     \let\nonarrowing = \relax | |
|   \fi | |
| } | |
|  | |
|  | |
| \message{defuns,} | |
| % @defun etc. | |
|  | |
| % Allow user to change definition object font (\df) internally | |
| \def\setdeffont #1 {\csname DEF#1\endcsname} | |
|  | |
| \newskip\defbodyindent \defbodyindent=.4in | |
| \newskip\defargsindent \defargsindent=50pt | |
| \newskip\deftypemargin \deftypemargin=12pt | |
| \newskip\deflastargmargin \deflastargmargin=18pt | |
|  | |
| \newcount\parencount | |
| % define \functionparens, which makes ( and ) and & do special things. | |
| % \functionparens affects the group it is contained in. | |
| \def\activeparens{% | |
| \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active | |
| \catcode`\[=\active \catcode`\]=\active} | |
| 
 | |
| % Make control sequences which act like normal parenthesis chars. | |
| \let\lparen = ( \let\rparen = ) | |
| 
 | |
| {\activeparens % Now, smart parens don't turn on until &foo (see \amprm) | |
|  | |
| % Be sure that we always have a definition for `(', etc.  For example, | |
| % if the fn name has parens in it, \boldbrax will not be in effect yet, | |
| % so TeX would otherwise complain about undefined control sequence. | |
| \global\let(=\lparen \global\let)=\rparen | |
| \global\let[=\lbrack \global\let]=\rbrack | |
| 
 | |
| \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 } | |
| \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb} | |
| % This is used to turn on special parens | |
| % but make & act ordinary (given that it's active). | |
| \gdef\boldbraxnoamp{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb\let&=\ampnr} | |
| 
 | |
| % Definitions of (, ) and & used in args for functions. | |
| % This is the definition of ( outside of all parentheses. | |
| \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested | |
|   \global\advance\parencount by 1 | |
| } | |
| % | |
| % This is the definition of ( when already inside a level of parens. | |
| \gdef\opnested{\char`\(\global\advance\parencount by 1 } | |
| % | |
| \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0. | |
|   % also in that case restore the outer-level definition of (. | |
|   \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi | |
|   \global\advance \parencount by -1 } | |
| % If we encounter &foo, then turn on ()-hacking afterwards | |
| \gdef\amprm#1 {{\rm\}\let(=\oprm \let)=\clrm\ } | |
| % | |
| \gdef\normalparens{\boldbrax\let&=\ampnr} | |
| } % End of definition inside \activeparens | |
| %% These parens (in \boldbrax) actually are a little bolder than the | |
| %% contained text.  This is especially needed for [ and ] | |
| \def\opnr{{\sf\char`\(}\global\advance\parencount by 1 } | |
| \def\clnr{{\sf\char`\)}\global\advance\parencount by -1 } | |
| \let\ampnr = \& | |
| \def\lbrb{{\bf\char`\[}} | |
| \def\rbrb{{\bf\char`\]}} | |
| 
 | |
| % Active &'s sneak into the index arguments, so make sure it's defined. | |
| { | |
|   \catcode`& = 13 | |
|   \global\let& = \ampnr | |
| } | |
| 
 | |
| % First, defname, which formats the header line itself. | |
| % #1 should be the function name. | |
| % #2 should be the type of definition, such as "Function". | |
|  | |
| \def\defname #1#2{% | |
| % Get the values of \leftskip and \rightskip as they were | |
| % outside the @def... | |
| \dimen2=\leftskip | |
| \advance\dimen2 by -\defbodyindent | |
| \noindent | |
| \setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}% | |
| \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line | |
| \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations | |
| \parshape 2 0in \dimen0 \defargsindent \dimen1 | |
| % Now output arg 2 ("Function" or some such) | |
| % ending at \deftypemargin from the right margin, | |
| % but stuck inside a box of width 0 so it does not interfere with linebreaking | |
| {% Adjust \hsize to exclude the ambient margins, | |
| % so that \rightline will obey them. | |
| \advance \hsize by -\dimen2 | |
| \rlap{\rightline{{\rm #2}\hskip -1.25pc }}}% | |
| % Make all lines underfull and no complaints: | |
| \tolerance=10000 \hbadness=10000 | |
| \advance\leftskip by -\defbodyindent | |
| \exdentamount=\defbodyindent | |
| {\df #1}\enskip        % Generate function name | |
| } | |
| 
 | |
| % Actually process the body of a definition | |
| % #1 should be the terminating control sequence, such as \Edefun. | |
| % #2 should be the "another name" control sequence, such as \defunx. | |
| % #3 should be the control sequence that actually processes the header, | |
| %    such as \defunheader. | |
|  | |
| \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody | |
| \medbreak % | |
| % Define the end token that this defining construct specifies | |
| % so that it will exit this group. | |
| \def#1{\endgraf\endgroup\medbreak}% | |
| \def#2{\begingroup\obeylines\activeparens\spacesplit#3}% | |
| \parindent=0in | |
| \advance\leftskip by \defbodyindent | |
| \exdentamount=\defbodyindent | |
| \begingroup % | |
| \catcode 61=\active % 61 is `=' | |
| \obeylines\activeparens\spacesplit#3} | |
| 
 | |
| % #1 is the \E... control sequence to end the definition (which we define). | |
| % #2 is the \...x control sequence for consecutive fns (which we define). | |
| % #3 is the control sequence to call to resume processing. | |
| % #4, delimited by the space, is the class name. | |
| % | |
| \def\defmethparsebody#1#2#3#4 {\begingroup\inENV % | |
| \medbreak % | |
| % Define the end token that this defining construct specifies | |
| % so that it will exit this group. | |
| \def#1{\endgraf\endgroup\medbreak}% | |
| \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}% | |
| \parindent=0in | |
| \advance\leftskip by \defbodyindent | |
| \exdentamount=\defbodyindent | |
| \begingroup\obeylines\activeparens\spacesplit{#3{#4}}} | |
| 
 | |
| % Used for @deftypemethod and @deftypeivar. | |
| % #1 is the \E... control sequence to end the definition (which we define). | |
| % #2 is the \...x control sequence for consecutive fns (which we define). | |
| % #3 is the control sequence to call to resume processing. | |
| % #4, delimited by a space, is the class name. | |
| % #5 is the method's return type. | |
| % | |
| \def\deftypemethparsebody#1#2#3#4 #5 {\begingroup\inENV | |
|   \medbreak | |
|   \def#1{\endgraf\endgroup\medbreak}% | |
|   \def#2##1 ##2 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}{##2}}}% | |
|   \parindent=0in | |
|   \advance\leftskip by \defbodyindent | |
|   \exdentamount=\defbodyindent | |
|   \begingroup\obeylines\activeparens\spacesplit{#3{#4}{#5}}} | |
| 
 | |
| % Used for @deftypeop.  The change from \deftypemethparsebody is an | |
| % extra argument at the beginning which is the `category', instead of it | |
| % being the hardwired string `Method' or `Instance Variable'.  We have | |
| % to account for this both in the \...x definition and in parsing the | |
| % input at hand.  Thus also need a control sequence (passed as #5) for | |
| % the \E... definition to assign the category name to. | |
| %  | |
| \def\deftypeopparsebody#1#2#3#4#5 #6 {\begingroup\inENV | |
|   \medbreak | |
|   \def#1{\endgraf\endgroup\medbreak}% | |
|   \def#2##1 ##2 ##3 {% | |
|     \def#4{##1}% | |
|     \begingroup\obeylines\activeparens\spacesplit{#3{##2}{##3}}}% | |
|   \parindent=0in | |
|   \advance\leftskip by \defbodyindent | |
|   \exdentamount=\defbodyindent | |
|   \begingroup\obeylines\activeparens\spacesplit{#3{#5}{#6}}} | |
| 
 | |
| \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV % | |
| \medbreak % | |
| % Define the end token that this defining construct specifies | |
| % so that it will exit this group. | |
| \def#1{\endgraf\endgroup\medbreak}% | |
| \def#2##1 ##2 {\def#4{##1}% | |
| \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}% | |
| \parindent=0in | |
| \advance\leftskip by \defbodyindent | |
| \exdentamount=\defbodyindent | |
| \begingroup\obeylines\activeparens\spacesplit{#3{#5}}} | |
| 
 | |
| % These parsing functions are similar to the preceding ones | |
| % except that they do not make parens into active characters. | |
| % These are used for "variables" since they have no arguments. | |
|  | |
| \def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody | |
| \medbreak % | |
| % Define the end token that this defining construct specifies | |
| % so that it will exit this group. | |
| \def#1{\endgraf\endgroup\medbreak}% | |
| \def#2{\begingroup\obeylines\spacesplit#3}% | |
| \parindent=0in | |
| \advance\leftskip by \defbodyindent | |
| \exdentamount=\defbodyindent | |
| \begingroup % | |
| \catcode 61=\active % | |
| \obeylines\spacesplit#3} | |
| 
 | |
| % This is used for \def{tp,vr}parsebody.  It could probably be used for | |
| % some of the others, too, with some judicious conditionals. | |
| % | |
| \def\parsebodycommon#1#2#3{% | |
|   \begingroup\inENV % | |
|   \medbreak % | |
|   % Define the end token that this defining construct specifies | |
|   % so that it will exit this group. | |
|   \def#1{\endgraf\endgroup\medbreak}% | |
|   \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}% | |
|   \parindent=0in | |
|   \advance\leftskip by \defbodyindent | |
|   \exdentamount=\defbodyindent | |
|   \begingroup\obeylines | |
| } | |
| 
 | |
| \def\defvrparsebody#1#2#3#4 {% | |
|   \parsebodycommon{#1}{#2}{#3}% | |
|   \spacesplit{#3{#4}}% | |
| } | |
| 
 | |
| % This loses on `@deftp {Data Type} {struct termios}' -- it thinks the | |
| % type is just `struct', because we lose the braces in `{struct | |
| % termios}' when \spacesplit reads its undelimited argument.  Sigh. | |
| % \let\deftpparsebody=\defvrparsebody | |
| % | |
| % So, to get around this, we put \empty in with the type name.  That | |
| % way, TeX won't find exactly `{...}' as an undelimited argument, and | |
| % won't strip off the braces. | |
| % | |
| \def\deftpparsebody #1#2#3#4 {% | |
|   \parsebodycommon{#1}{#2}{#3}% | |
|   \spacesplit{\parsetpheaderline{#3{#4}}}\empty | |
| } | |
| 
 | |
| % Fine, but then we have to eventually remove the \empty *and* the | |
| % braces (if any).  That's what this does. | |
| % | |
| \def\removeemptybraces\empty#1\relax{#1} | |
| 
 | |
| % After \spacesplit has done its work, this is called -- #1 is the final | |
| % thing to call, #2 the type name (which starts with \empty), and #3 | |
| % (which might be empty) the arguments. | |
| % | |
| \def\parsetpheaderline#1#2#3{% | |
|   #1{\removeemptybraces#2\relax}{#3}% | |
| }% | |
|  | |
| \def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV % | |
| \medbreak % | |
| % Define the end token that this defining construct specifies | |
| % so that it will exit this group. | |
| \def#1{\endgraf\endgroup\medbreak}% | |
| \def#2##1 ##2 {\def#4{##1}% | |
| \begingroup\obeylines\spacesplit{#3{##2}}}% | |
| \parindent=0in | |
| \advance\leftskip by \defbodyindent | |
| \exdentamount=\defbodyindent | |
| \begingroup\obeylines\spacesplit{#3{#5}}} | |
| 
 | |
| % Split up #2 at the first space token. | |
| % call #1 with two arguments: | |
| %  the first is all of #2 before the space token, | |
| %  the second is all of #2 after that space token. | |
| % If #2 contains no space token, all of it is passed as the first arg | |
| % and the second is passed as empty. | |
|  | |
| {\obeylines | |
| \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}% | |
| \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{% | |
| \ifx\relax #3% | |
| #1{#2}{}\else #1{#2}{#3#4}\fi}} | |
| 
 | |
| % So much for the things common to all kinds of definitions. | |
|  | |
| % Define @defun. | |
|  | |
| % First, define the processing that is wanted for arguments of \defun | |
| % Use this to expand the args and terminate the paragraph they make up | |
|  | |
| \def\defunargs#1{\functionparens \sl | |
| % Expand, preventing hyphenation at `-' chars. | |
| % Note that groups don't affect changes in \hyphenchar. | |
| % Set the font temporarily and use \font in case \setfont made \tensl a macro. | |
| {\tensl\hyphenchar\font=0}% | |
| #1% | |
| {\tensl\hyphenchar\font=45}% | |
| \ifnum\parencount=0 \else \errmessage{Unbalanced parentheses in @def}\fi% | |
| \interlinepenalty=10000 | |
| \advance\rightskip by 0pt plus 1fil | |
| \endgraf\nobreak\vskip -\parskip\nobreak | |
| } | |
| 
 | |
| \def\deftypefunargs #1{% | |
| % Expand, preventing hyphenation at `-' chars. | |
| % Note that groups don't affect changes in \hyphenchar. | |
| % Use \boldbraxnoamp, not \functionparens, so that & is not special. | |
| \boldbraxnoamp | |
| \tclose{#1}% avoid \code because of side effects on active chars | |
| \interlinepenalty=10000 | |
| \advance\rightskip by 0pt plus 1fil | |
| \endgraf\nobreak\vskip -\parskip\nobreak | |
| } | |
| 
 | |
| % Do complete processing of one @defun or @defunx line already parsed. | |
|  | |
| % @deffn Command forward-char nchars | |
|  | |
| \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader} | |
| 
 | |
| \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}% | |
| \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
| 
 | |
| % @defun == @deffn Function | |
|  | |
| \def\defun{\defparsebody\Edefun\defunx\defunheader} | |
| 
 | |
| \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index | |
| \begingroup\defname {#1}{\putwordDeffunc}% | |
| \defunargs {#2}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
| 
 | |
| % @deftypefun int foobar (int @var{foo}, float @var{bar}) | |
|  | |
| \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader} | |
| 
 | |
| % #1 is the data type.  #2 is the name and args. | |
| \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax} | |
| % #1 is the data type, #2 the name, #3 the args. | |
| \def\deftypefunheaderx #1#2 #3\relax{% | |
| \doind {fn}{\code{#2}}% Make entry in function index | |
| \begingroup\defname {\defheaderxcond#1\relax$$$#2}{\putwordDeftypefun}% | |
| \deftypefunargs {#3}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
|  | |
| % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar}) | |
|  | |
| \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader} | |
|  | |
| % \defheaderxcond#1\relax$$$ | |
| % puts #1 in @code, followed by a space, but does nothing if #1 is null. | |
| \def\defheaderxcond#1#2$$${\ifx#1\relax\else\code{#1#2} \fi} | |
|  | |
| % #1 is the classification.  #2 is the data type.  #3 is the name and args. | |
| \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax} | |
| % #1 is the classification, #2 the data type, #3 the name, #4 the args. | |
| \def\deftypefnheaderx #1#2#3 #4\relax{% | |
| \doind {fn}{\code{#3}}% Make entry in function index | |
| \begingroup | |
| \normalparens % notably, turn off `&' magic, which prevents | |
| %               at least some C++ text from working | |
| \defname {\defheaderxcond#2\relax$$$#3}{#1}% | |
| \deftypefunargs {#4}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
|  | |
| % @defmac == @deffn Macro | |
|  | |
| \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader} | |
|  | |
| \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index | |
| \begingroup\defname {#1}{\putwordDefmac}% | |
| \defunargs {#2}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
|  | |
| % @defspec == @deffn Special Form | |
|  | |
| \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader} | |
|  | |
| \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index | |
| \begingroup\defname {#1}{\putwordDefspec}% | |
| \defunargs {#2}\endgroup % | |
| \catcode 61=\other % Turn off change made in \defparsebody | |
| } | |
|  | |
| % @defop CATEGORY CLASS OPERATION ARG... | |
| % | |
| \def\defop #1 {\def\defoptype{#1}% | |
| \defopparsebody\Edefop\defopx\defopheader\defoptype} | |
| % | |
| \def\defopheader#1#2#3{% | |
| \dosubind {fn}{\code{#2}}{\putwordon\ #1}% Make entry in function index | |
| \begingroup\defname {#2}{\defoptype\ \putwordon\ #1}% | |
| \defunargs {#3}\endgroup % | |
| } | |
|  | |
| % @deftypeop CATEGORY CLASS TYPE OPERATION ARG... | |
| % | |
| \def\deftypeop #1 {\def\deftypeopcategory{#1}% | |
|   \deftypeopparsebody\Edeftypeop\deftypeopx\deftypeopheader | |
|                        \deftypeopcategory} | |
| % | |
| % #1 is the class name, #2 the data type, #3 the operation name, #4 the args. | |
| \def\deftypeopheader#1#2#3#4{% | |
|   \dosubind{fn}{\code{#3}}{\putwordon\ \code{#1}}% entry in function index | |
|   \begingroup | |
|     \defname{\defheaderxcond#2\relax$$$#3} | |
|             {\deftypeopcategory\ \putwordon\ \code{#1}}% | |
|     \deftypefunargs{#4}% | |
|   \endgroup | |
| } | |
|  | |
| % @deftypemethod CLASS TYPE METHOD ARG... | |
| % | |
| \def\deftypemethod{% | |
|   \deftypemethparsebody\Edeftypemethod\deftypemethodx\deftypemethodheader} | |
| % | |
| % #1 is the class name, #2 the data type, #3 the method name, #4 the args. | |
| \def\deftypemethodheader#1#2#3#4{% | |
|   \dosubind{fn}{\code{#3}}{\putwordon\ \code{#1}}% entry in function index | |
|   \begingroup | |
|     \defname{\defheaderxcond#2\relax$$$#3}{\putwordMethodon\ \code{#1}}% | |
|     \deftypefunargs{#4}% | |
|   \endgroup | |
| } | |
|  | |
| % @deftypeivar CLASS TYPE VARNAME | |
| % | |
| \def\deftypeivar{% | |
|   \deftypemethparsebody\Edeftypeivar\deftypeivarx\deftypeivarheader} | |
| % | |
| % #1 is the class name, #2 the data type, #3 the variable name. | |
| \def\deftypeivarheader#1#2#3{% | |
|   \dosubind{vr}{\code{#3}}{\putwordof\ \code{#1}}% entry in variable index | |
|   \begingroup | |
|     \defname{#3}{\putwordInstanceVariableof\ \code{#1}}% | |
|     \defvarargs{#3}% | |
|   \endgroup | |
| } | |
|  | |
| % @defmethod == @defop Method | |
| % | |
| \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader} | |
| % | |
| % #1 is the class name, #2 the method name, #3 the args. | |
| \def\defmethodheader#1#2#3{% | |
|   \dosubind{fn}{\code{#2}}{\putwordon\ \code{#1}}% entry in function index | |
|   \begingroup | |
|     \defname{#2}{\putwordMethodon\ \code{#1}}% | |
|     \defunargs{#3}% | |
|   \endgroup | |
| } | |
|  | |
| % @defcv {Class Option} foo-class foo-flag | |
|  | |
| \def\defcv #1 {\def\defcvtype{#1}% | |
| \defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype} | |
|  | |
| \def\defcvarheader #1#2#3{% | |
| \dosubind {vr}{\code{#2}}{\putwordof\ #1}% Make entry in var index | |
| \begingroup\defname {#2}{\defcvtype\ \putwordof\ #1}% | |
| \defvarargs {#3}\endgroup % | |
| } | |
|  | |
| % @defivar CLASS VARNAME == @defcv {Instance Variable} CLASS VARNAME | |
| % | |
| \def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader} | |
| % | |
| \def\defivarheader#1#2#3{% | |
|   \dosubind {vr}{\code{#2}}{\putwordof\ #1}% entry in var index | |
|   \begingroup | |
|     \defname{#2}{\putwordInstanceVariableof\ #1}% | |
|     \defvarargs{#3}% | |
|   \endgroup | |
| } | |
|  | |
| % @defvar | |
| % First, define the processing that is wanted for arguments of @defvar. | |
| % This is actually simple: just print them in roman. | |
| % This must expand the args and terminate the paragraph they make up | |
| \def\defvarargs #1{\normalparens #1% | |
| \interlinepenalty=10000 | |
| \endgraf\nobreak\vskip -\parskip\nobreak} | |
|  | |
| % @defvr Counter foo-count | |
|  | |
| \def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader} | |
|  | |
| \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}% | |
| \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup} | |
|  | |
| % @defvar == @defvr Variable | |
|  | |
| \def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader} | |
|  | |
| \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index | |
| \begingroup\defname {#1}{\putwordDefvar}% | |
| \defvarargs {#2}\endgroup % | |
| } | |
|  | |
| % @defopt == @defvr {User Option} | |
|  | |
| \def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader} | |
|  | |
| \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index | |
| \begingroup\defname {#1}{\putwordDefopt}% | |
| \defvarargs {#2}\endgroup % | |
| } | |
|  | |
| % @deftypevar int foobar | |
|  | |
| \def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader} | |
|  | |
| % #1 is the data type.  #2 is the name, perhaps followed by text that | |
| % is actually part of the data type, which should not be put into the index. | |
| \def\deftypevarheader #1#2{% | |
| \dovarind#2 \relax% Make entry in variables index | |
| \begingroup\defname {\defheaderxcond#1\relax$$$#2}{\putwordDeftypevar}% | |
| \interlinepenalty=10000 | |
| \endgraf\nobreak\vskip -\parskip\nobreak | |
| \endgroup} | |
| \def\dovarind#1 #2\relax{\doind{vr}{\code{#1}}} | |
|  | |
| % @deftypevr {Global Flag} int enable | |
|  | |
| \def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader} | |
|  | |
| \def\deftypevrheader #1#2#3{\dovarind#3 \relax% | |
| \begingroup\defname {\defheaderxcond#2\relax$$$#3}{#1} | |
| \interlinepenalty=10000 | |
| \endgraf\nobreak\vskip -\parskip\nobreak | |
| \endgroup} | |
|  | |
| % Now define @deftp | |
| % Args are printed in bold, a slight difference from @defvar. | |
|  | |
| \def\deftpargs #1{\bf \defvarargs{#1}} | |
|  | |
| % @deftp Class window height width ... | |
|  | |
| \def\deftp{\deftpparsebody\Edeftp\deftpx\deftpheader} | |
|  | |
| \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}% | |
| \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup} | |
|  | |
| % These definitions are used if you use @defunx (etc.) | |
| % anywhere other than immediately after a @defun or @defunx. | |
| %  | |
| \def\defcvx#1 {\errmessage{@defcvx in invalid context}} | |
| \def\deffnx#1 {\errmessage{@deffnx in invalid context}} | |
| \def\defivarx#1 {\errmessage{@defivarx in invalid context}} | |
| \def\defmacx#1 {\errmessage{@defmacx in invalid context}} | |
| \def\defmethodx#1 {\errmessage{@defmethodx in invalid context}} | |
| \def\defoptx #1 {\errmessage{@defoptx in invalid context}} | |
| \def\defopx#1 {\errmessage{@defopx in invalid context}} | |
| \def\defspecx#1 {\errmessage{@defspecx in invalid context}} | |
| \def\deftpx#1 {\errmessage{@deftpx in invalid context}} | |
| \def\deftypefnx#1 {\errmessage{@deftypefnx in invalid context}} | |
| \def\deftypefunx#1 {\errmessage{@deftypefunx in invalid context}} | |
| \def\deftypeivarx#1 {\errmessage{@deftypeivarx in invalid context}} | |
| \def\deftypemethodx#1 {\errmessage{@deftypemethodx in invalid context}} | |
| \def\deftypeopx#1 {\errmessage{@deftypeopx in invalid context}} | |
| \def\deftypevarx#1 {\errmessage{@deftypevarx in invalid context}} | |
| \def\deftypevrx#1 {\errmessage{@deftypevrx in invalid context}} | |
| \def\defunx#1 {\errmessage{@defunx in invalid context}} | |
| \def\defvarx#1 {\errmessage{@defvarx in invalid context}} | |
| \def\defvrx#1 {\errmessage{@defvrx in invalid context}} | |
|  | |
|  | |
| \message{macros,} | |
| % @macro. | |
|  | |
| % To do this right we need a feature of e-TeX, \scantokens, | |
| % which we arrange to emulate with a temporary file in ordinary TeX. | |
| \ifx\eTeXversion\undefined | |
|  \newwrite\macscribble | |
|  \def\scanmacro#1{% | |
|    \begingroup \newlinechar`\^^M | |
|    % Undo catcode changes of \startcontents and \doprintindex | |
|    \catcode`\@=0 \catcode`\\=12 \escapechar=`\@ | |
|    % Append \endinput to make sure that TeX does not see the ending newline. | |
|    \toks0={#1\endinput}% | |
|    \immediate\openout\macscribble=\jobname.tmp | |
|    \immediate\write\macscribble{\the\toks0}% | |
|    \immediate\closeout\macscribble | |
|    \let\xeatspaces\eatspaces | |
|    \input \jobname.tmp | |
|    \endgroup | |
| } | |
| \else | |
| \def\scanmacro#1{% | |
| \begingroup \newlinechar`\^^M | |
| % Undo catcode changes of \startcontents and \doprintindex | |
| \catcode`\@=0 \catcode`\\=12 \escapechar=`\@ | |
| \let\xeatspaces\eatspaces\scantokens{#1\endinput}\endgroup} | |
| \fi | |
|  | |
| \newcount\paramno   % Count of parameters | |
| \newtoks\macname    % Macro name | |
| \newif\ifrecursive  % Is it recursive? | |
| \def\macrolist{}    % List of all defined macros in the form | |
|                     % \do\macro1\do\macro2... | |
|  | |
| % Utility routines. | |
| % Thisdoes \let #1 = #2, except with \csnames. | |
| \def\cslet#1#2{% | |
| \expandafter\expandafter | |
| \expandafter\let | |
| \expandafter\expandafter | |
| \csname#1\endcsname | |
| \csname#2\endcsname} | |
|  | |
| % Trim leading and trailing spaces off a string. | |
| % Concepts from aro-bend problem 15 (see CTAN). | |
| {\catcode`\@=11 | |
| \gdef\eatspaces #1{\expandafter\trim@\expandafter{#1 }} | |
| \gdef\trim@ #1{\trim@@ @#1 @ #1 @ @@} | |
| \gdef\trim@@ #1@ #2@ #3@@{\trim@@@\empty #2 @} | |
| \def\unbrace#1{#1} | |
| \unbrace{\gdef\trim@@@ #1 } #2@{#1} | |
| } | |
|  | |
| % Trim a single trailing ^^M off a string. | |
| {\catcode`\^^M=12\catcode`\Q=3% | |
| \gdef\eatcr #1{\eatcra #1Q^^MQ}% | |
| \gdef\eatcra#1^^MQ{\eatcrb#1Q}% | |
| \gdef\eatcrb#1Q#2Q{#1}% | |
| } | |
|  | |
| % Macro bodies are absorbed as an argument in a context where | |
| % all characters are catcode 10, 11 or 12, except \ which is active | |
| % (as in normal texinfo). It is necessary to change the definition of \. | |
|  | |
| % It's necessary to have hard CRs when the macro is executed. This is | |
| % done by  making ^^M (\endlinechar) catcode 12 when reading the macro | |
| % body, and then making it the \newlinechar in \scanmacro. | |
|  | |
| \def\macrobodyctxt{% | |
|   \catcode`\~=12 | |
|   \catcode`\^=12 | |
|   \catcode`\_=12 | |
|   \catcode`\|=12 | |
|   \catcode`\<=12 | |
|   \catcode`\>=12 | |
|   \catcode`\+=12 | |
|   \catcode`\{=12 | |
|   \catcode`\}=12 | |
|   \catcode`\@=12 | |
|   \catcode`\^^M=12 | |
|   \usembodybackslash} | |
|  | |
| \def\macroargctxt{% | |
|   \catcode`\~=12 | |
|   \catcode`\^=12 | |
|   \catcode`\_=12 | |
|   \catcode`\|=12 | |
|   \catcode`\<=12 | |
|   \catcode`\>=12 | |
|   \catcode`\+=12 | |
|   \catcode`\@=12 | |
|   \catcode`\\=12} | |
|  | |
| % \mbodybackslash is the definition of \ in @macro bodies. | |
| % It maps \foo\ => \csname macarg.foo\endcsname => #N | |
| % where N is the macro parameter number. | |
| % We define \csname macarg.\endcsname to be \realbackslash, so | |
| % \\ in macro replacement text gets you a backslash. | |
|  | |
| {\catcode`@=0 @catcode`@\=@active | |
|  @gdef@usembodybackslash{@let\=@mbodybackslash} | |
|  @gdef@mbodybackslash#1\{@csname macarg.#1@endcsname} | |
| } | |
| \expandafter\def\csname macarg.\endcsname{\realbackslash} | |
|  | |
| \def\macro{\recursivefalse\parsearg\macroxxx} | |
| \def\rmacro{\recursivetrue\parsearg\macroxxx} | |
|  | |
| \def\macroxxx#1{% | |
|   \getargs{#1}%           now \macname is the macname and \argl the arglist | |
|   \ifx\argl\empty       % no arguments | |
|      \paramno=0% | |
|   \else | |
|      \expandafter\parsemargdef \argl;% | |
|   \fi | |
|   \if1\csname ismacro.\the\macname\endcsname | |
|      \message{Warning: redefining \the\macname}% | |
|   \else | |
|      \expandafter\ifx\csname \the\macname\endcsname \relax | |
|      \else \errmessage{The name \the\macname\space is reserved}\fi | |
|      \global\cslet{macsave.\the\macname}{\the\macname}% | |
|      \global\expandafter\let\csname ismacro.\the\macname\endcsname=1% | |
|      % Add the macroname to \macrolist | |
|      \toks0 = \expandafter{\macrolist\do}% | |
|      \xdef\macrolist{\the\toks0 | |
|        \expandafter\noexpand\csname\the\macname\endcsname}% | |
|   \fi | |
|   \begingroup \macrobodyctxt | |
|   \ifrecursive \expandafter\parsermacbody | |
|   \else \expandafter\parsemacbody | |
|   \fi} | |
|  | |
| \def\unmacro{\parsearg\unmacroxxx} | |
| \def\unmacroxxx#1{% | |
|   \if1\csname ismacro.#1\endcsname | |
|     \global\cslet{#1}{macsave.#1}% | |
|     \global\expandafter\let \csname ismacro.#1\endcsname=0% | |
|     % Remove the macro name from \macrolist | |
|     \begingroup | |
|       \edef\tempa{\expandafter\noexpand\csname#1\endcsname}% | |
|       \def\do##1{% | |
|         \def\tempb{##1}% | |
|         \ifx\tempa\tempb | |
|           % remove this | |
|         \else | |
|           \toks0 = \expandafter{\newmacrolist\do}% | |
|           \edef\newmacrolist{\the\toks0\expandafter\noexpand\tempa}% | |
|         \fi}% | |
|       \def\newmacrolist{}% | |
|       % Execute macro list to define \newmacrolist | |
|       \macrolist | |
|       \global\let\macrolist\newmacrolist | |
|     \endgroup | |
|   \else | |
|     \errmessage{Macro #1 not defined}% | |
|   \fi | |
| } | |
|  | |
| % This makes use of the obscure feature that if the last token of a | |
| % <parameter list> is #, then the preceding argument is delimited by | |
| % an opening brace, and that opening brace is not consumed. | |
| \def\getargs#1{\getargsxxx#1{}} | |
| \def\getargsxxx#1#{\getmacname #1 \relax\getmacargs} | |
| \def\getmacname #1 #2\relax{\macname={#1}} | |
| \def\getmacargs#1{\def\argl{#1}} | |
|  | |
| % Parse the optional {params} list.  Set up \paramno and \paramlist | |
| % so \defmacro knows what to do.  Define \macarg.blah for each blah | |
| % in the params list, to be ##N where N is the position in that list. | |
| % That gets used by \mbodybackslash (above). | |
|  | |
| % We need to get `macro parameter char #' into several definitions. | |
| % The technique used is stolen from LaTeX:  let \hash be something | |
| % unexpandable, insert that wherever you need a #, and then redefine | |
| % it to # just before using the token list produced. | |
| % | |
| % The same technique is used to protect \eatspaces till just before | |
| % the macro is used. | |
|  | |
| \def\parsemargdef#1;{\paramno=0\def\paramlist{}% | |
|         \let\hash\relax\let\xeatspaces\relax\parsemargdefxxx#1,;,} | |
| \def\parsemargdefxxx#1,{% | |
|   \if#1;\let\next=\relax | |
|   \else \let\next=\parsemargdefxxx | |
|     \advance\paramno by 1% | |
|     \expandafter\edef\csname macarg.\eatspaces{#1}\endcsname | |
|         {\xeatspaces{\hash\the\paramno}}% | |
|     \edef\paramlist{\paramlist\hash\the\paramno,}% | |
|   \fi\next} | |
|  | |
| % These two commands read recursive and nonrecursive macro bodies. | |
| % (They're different since rec and nonrec macros end differently.) | |
|  | |
| \long\def\parsemacbody#1@end macro% | |
| {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}% | |
| \long\def\parsermacbody#1@end rmacro% | |
| {\xdef\temp{\eatcr{#1}}\endgroup\defmacro}% | |
|  | |
| % This defines the macro itself. There are six cases: recursive and | |
| % nonrecursive macros of zero, one, and many arguments. | |
| % Much magic with \expandafter here. | |
| % \xdef is used so that macro definitions will survive the file | |
| % they're defined in; @include reads the file inside a group. | |
| \def\defmacro{% | |
|   \let\hash=##% convert placeholders to macro parameter chars | |
|   \ifrecursive | |
|     \ifcase\paramno | |
|     % 0 | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|         \noexpand\scanmacro{\temp}}% | |
|     \or % 1 | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|          \bgroup\noexpand\macroargctxt | |
|          \noexpand\braceorline | |
|          \expandafter\noexpand\csname\the\macname xxx\endcsname}% | |
|       \expandafter\xdef\csname\the\macname xxx\endcsname##1{% | |
|          \egroup\noexpand\scanmacro{\temp}}% | |
|     \else % many | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|          \bgroup\noexpand\macroargctxt | |
|          \noexpand\csname\the\macname xx\endcsname}% | |
|       \expandafter\xdef\csname\the\macname xx\endcsname##1{% | |
|           \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}% | |
|       \expandafter\expandafter | |
|       \expandafter\xdef | |
|       \expandafter\expandafter | |
|         \csname\the\macname xxx\endcsname | |
|           \paramlist{\egroup\noexpand\scanmacro{\temp}}% | |
|     \fi | |
|   \else | |
|     \ifcase\paramno | |
|     % 0 | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|         \noexpand\norecurse{\the\macname}% | |
|         \noexpand\scanmacro{\temp}\egroup}% | |
|     \or % 1 | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|          \bgroup\noexpand\macroargctxt | |
|          \noexpand\braceorline | |
|          \expandafter\noexpand\csname\the\macname xxx\endcsname}% | |
|       \expandafter\xdef\csname\the\macname xxx\endcsname##1{% | |
|         \egroup | |
|         \noexpand\norecurse{\the\macname}% | |
|         \noexpand\scanmacro{\temp}\egroup}% | |
|     \else % many | |
|       \expandafter\xdef\csname\the\macname\endcsname{% | |
|          \bgroup\noexpand\macroargctxt | |
|          \expandafter\noexpand\csname\the\macname xx\endcsname}% | |
|       \expandafter\xdef\csname\the\macname xx\endcsname##1{% | |
|           \expandafter\noexpand\csname\the\macname xxx\endcsname ##1,}% | |
|       \expandafter\expandafter | |
|       \expandafter\xdef | |
|       \expandafter\expandafter | |
|       \csname\the\macname xxx\endcsname | |
|       \paramlist{% | |
|           \egroup | |
|           \noexpand\norecurse{\the\macname}% | |
|           \noexpand\scanmacro{\temp}\egroup}% | |
|     \fi | |
|   \fi} | |
|  | |
| \def\norecurse#1{\bgroup\cslet{#1}{macsave.#1}} | |
|  | |
| % \braceorline decides whether the next nonwhitespace character is a | |
| % {.  If so it reads up to the closing }, if not, it reads the whole | |
| % line.  Whatever was read is then fed to the next control sequence | |
| % as an argument (by \parsebrace or \parsearg) | |
| \def\braceorline#1{\let\next=#1\futurelet\nchar\braceorlinexxx} | |
| \def\braceorlinexxx{% | |
|   \ifx\nchar\bgroup\else | |
|     \expandafter\parsearg | |
|   \fi \next} | |
|  | |
| % We mant to disable all macros during \shipout so that they are not | |
| % expanded by \write. | |
| \def\turnoffmacros{\begingroup \def\do##1{\let\noexpand##1=\relax}% | |
|   \edef\next{\macrolist}\expandafter\endgroup\next} | |
|  | |
|  | |
| % @alias. | |
| % We need some trickery to remove the optional spaces around the equal | |
| % sign.  Just make them active and then expand them all to nothing. | |
| \def\alias{\begingroup\obeyspaces\parsearg\aliasxxx} | |
| \def\aliasxxx #1{\aliasyyy#1\relax} | |
| \def\aliasyyy #1=#2\relax{\ignoreactivespaces | |
| \edef\next{\global\let\expandafter\noexpand\csname#1\endcsname=% | |
|            \expandafter\noexpand\csname#2\endcsname}% | |
| \expandafter\endgroup\next} | |
|  | |
|  | |
| \message{cross references,} | |
| % @xref etc. | |
|  | |
| \newwrite\auxfile | |
|  | |
| \newif\ifhavexrefs    % True if xref values are known. | |
| \newif\ifwarnedxrefs  % True if we warned once that they aren't known. | |
|  | |
| % @inforef is relatively simple. | |
| \def\inforef #1{\inforefzzz #1,,,,**} | |
| \def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}}, | |
|   node \samp{\ignorespaces#1{}}} | |
|  | |
| % @node's job is to define \lastnode. | |
| \def\node{\ENVcheck\parsearg\nodezzz} | |
| \def\nodezzz#1{\nodexxx [#1,]} | |
| \def\nodexxx[#1,#2]{\gdef\lastnode{#1}} | |
| \let\nwnode=\node | |
| \let\lastnode=\relax | |
|  | |
| % The sectioning commands (@chapter, etc.) call these. | |
| \def\donoderef{% | |
|   \ifx\lastnode\relax\else | |
|     \expandafter\expandafter\expandafter\setref{\lastnode}% | |
|       {Ysectionnumberandtype}% | |
|     \global\let\lastnode=\relax | |
|   \fi | |
| } | |
| \def\unnumbnoderef{% | |
|   \ifx\lastnode\relax\else | |
|     \expandafter\expandafter\expandafter\setref{\lastnode}{Ynothing}% | |
|     \global\let\lastnode=\relax | |
|   \fi | |
| } | |
| \def\appendixnoderef{% | |
|   \ifx\lastnode\relax\else | |
|     \expandafter\expandafter\expandafter\setref{\lastnode}% | |
|       {Yappendixletterandtype}% | |
|     \global\let\lastnode=\relax | |
|   \fi | |
| } | |
|  | |
|  | |
| % @anchor{NAME} -- define xref target at arbitrary point. | |
| % | |
| \newcount\savesfregister | |
| \gdef\savesf{\relax \ifhmode \savesfregister=\spacefactor \fi} | |
| \gdef\restoresf{\relax \ifhmode \spacefactor=\savesfregister \fi} | |
| \gdef\anchor#1{\savesf \setref{#1}{Ynothing}\restoresf \ignorespaces} | |
|  | |
| % \setref{NAME}{SNT} defines a cross-reference point NAME, namely | |
| % NAME-title, NAME-pg, and NAME-SNT.  Called from \foonoderef.  We have | |
| % to set \indexdummies so commands such as @code in a section title | |
| % aren't expanded.  It would be nicer not to expand the titles in the | |
| % first place, but there's so many layers that that is hard to do. | |
| % | |
| \def\setref#1#2{{% | |
|   \indexdummies | |
|   \pdfmkdest{#1}% | |
|   \dosetq{#1-title}{Ytitle}% | |
|   \dosetq{#1-pg}{Ypagenumber}% | |
|   \dosetq{#1-snt}{#2}% | |
| }} | |
|  | |
| % @xref, @pxref, and @ref generate cross-references.  For \xrefX, #1 is | |
| % the node name, #2 the name of the Info cross-reference, #3 the printed | |
| % node name, #4 the name of the Info file, #5 the name of the printed | |
| % manual.  All but the node name can be omitted. | |
| % | |
| \def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]} | |
| \def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]} | |
| \def\ref#1{\xrefX[#1,,,,,,,]} | |
| \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup | |
|   \unsepspaces | |
|   \def\printedmanual{\ignorespaces #5}% | |
|   \def\printednodename{\ignorespaces #3}% | |
|   \setbox1=\hbox{\printedmanual}% | |
|   \setbox0=\hbox{\printednodename}% | |
|   \ifdim \wd0 = 0pt | |
|     % No printed node name was explicitly given. | |
|     \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax | |
|       % Use the node name inside the square brackets. | |
|       \def\printednodename{\ignorespaces #1}% | |
|     \else | |
|       % Use the actual chapter/section title appear inside | |
|       % the square brackets.  Use the real section title if we have it. | |
|       \ifdim \wd1 > 0pt | |
|         % It is in another manual, so we don't have it. | |
|         \def\printednodename{\ignorespaces #1}% | |
|       \else | |
|         \ifhavexrefs | |
|           % We know the real title if we have the xref values. | |
|           \def\printednodename{\refx{#1-title}{}}% | |
|         \else | |
|           % Otherwise just copy the Info node name. | |
|           \def\printednodename{\ignorespaces #1}% | |
|         \fi% | |
|       \fi | |
|     \fi | |
|   \fi | |
|   % | |
|   % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not | |
|   % insert empty discretionaries after hyphens, which means that it will | |
|   % not find a line break at a hyphen in a node names.  Since some manuals | |
|   % are best written with fairly long node names, containing hyphens, this | |
|   % is a loss.  Therefore, we give the text of the node name again, so it | |
|   % is as if TeX is seeing it for the first time. | |
|   \ifpdf | |
|     \leavevmode | |
|     \getfilename{#4}% | |
|     \ifnum\filenamelength>0 | |
|       \startlink attr{/Border [0 0 0]}% | |
|         goto file{\the\filename.pdf} name{#1@}% | |
|     \else | |
|       \startlink attr{/Border [0 0 0]}% | |
|         goto name{#1@}% | |
|     \fi | |
|     \linkcolor | |
|   \fi | |
|   % | |
|   \ifdim \wd1 > 0pt | |
|     \putwordsection{} ``\printednodename'' \putwordin{} \cite{\printedmanual}% | |
|   \else | |
|     % _ (for example) has to be the character _ for the purposes of the | |
|     % control sequence corresponding to the node, but it has to expand | |
|     % into the usual \leavevmode...\vrule stuff for purposes of | |
|     % printing. So we \turnoffactive for the \refx-snt, back on for the | |
|     % printing, back off for the \refx-pg. | |
|     {\normalturnoffactive | |
|      % Only output a following space if the -snt ref is nonempty; for | |
|      % @unnumbered and @anchor, it won't be. | |
|      \setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}% | |
|      \ifdim \wd2 > 0pt \refx{#1-snt}\space\fi | |
|     }% | |
|     % [mynode], | |
|     [\printednodename],\space | |
|     % page 3 | |
|     \turnoffactive \putwordpage\tie\refx{#1-pg}{}% | |
|   \fi | |
|   \endlink | |
| \endgroup} | |
|  | |
| % \dosetq is the interface for calls from other macros | |
|  | |
| % Use \normalturnoffactive so that punctuation chars such as underscore | |
| % and backslash work in node names.  (\turnoffactive doesn't do \.) | |
| \def\dosetq#1#2{% | |
|   {\let\folio=0% | |
|    \normalturnoffactive | |
|    \edef\next{\write\auxfile{\internalsetq{#1}{#2}}}% | |
|    \iflinks | |
|      \next | |
|    \fi | |
|   }% | |
| } | |
|  | |
| % \internalsetq {foo}{page} expands into | |
| % CHARACTERS 'xrdef {foo}{...expansion of \Ypage...} | |
| % When the aux file is read, ' is the escape character | |
|  | |
| \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}} | |
|  | |
| % Things to be expanded by \internalsetq | |
|  | |
| \def\Ypagenumber{\folio} | |
|  | |
| \def\Ytitle{\thissection} | |
|  | |
| \def\Ynothing{} | |
|  | |
| \def\Ysectionnumberandtype{% | |
| \ifnum\secno=0 \putwordChapter\xreftie\the\chapno % | |
| \else \ifnum \subsecno=0 \putwordSection\xreftie\the\chapno.\the\secno % | |
| \else \ifnum \subsubsecno=0 % | |
| \putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno % | |
| \else % | |
| \putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno % | |
| \fi \fi \fi } | |
|  | |
| \def\Yappendixletterandtype{% | |
| \ifnum\secno=0 \putwordAppendix\xreftie'char\the\appendixno{}% | |
| \else \ifnum \subsecno=0 \putwordSection\xreftie'char\the\appendixno.\the\secno % | |
| \else \ifnum \subsubsecno=0 % | |
| \putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno % | |
| \else % | |
| \putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno % | |
| \fi \fi \fi } | |
|  | |
| \gdef\xreftie{'tie} | |
|  | |
| % Use TeX 3.0's \inputlineno to get the line number, for better error | |
| % messages, but if we're using an old version of TeX, don't do anything. | |
| % | |
| \ifx\inputlineno\thisisundefined | |
|   \let\linenumber = \empty % Non-3.0. | |
| \else | |
|   \def\linenumber{\the\inputlineno:\space} | |
| \fi | |
|  | |
| % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME. | |
| % If its value is nonempty, SUFFIX is output afterward. | |
|  | |
| \def\refx#1#2{% | |
|   \expandafter\ifx\csname X#1\endcsname\relax | |
|     % If not defined, say something at least. | |
|     \angleleft un\-de\-fined\angleright | |
|     \iflinks | |
|       \ifhavexrefs | |
|         \message{\linenumber Undefined cross reference `#1'.}% | |
|       \else | |
|         \ifwarnedxrefs\else | |
|           \global\warnedxrefstrue | |
|           \message{Cross reference values unknown; you must run TeX again.}% | |
|         \fi | |
|       \fi | |
|     \fi | |
|   \else | |
|     % It's defined, so just use it. | |
|     \csname X#1\endcsname | |
|   \fi | |
|   #2% Output the suffix in any case. | |
| } | |
|  | |
| % This is the macro invoked by entries in the aux file. | |
| % | |
| \def\xrdef#1{\begingroup | |
|   % Reenable \ as an escape while reading the second argument. | |
|   \catcode`\\ = 0 | |
|   \afterassignment\endgroup | |
|   \expandafter\gdef\csname X#1\endcsname | |
| } | |
|  | |
| % Read the last existing aux file, if any.  No error if none exists. | |
| \def\readauxfile{\begingroup | |
|   \catcode`\^^@=\other | |
|   \catcode`\^^A=\other | |
|   \catcode`\^^B=\other | |
|   \catcode`\^^C=\other | |
|   \catcode`\^^D=\other | |
|   \catcode`\^^E=\other | |
|   \catcode`\^^F=\other | |
|   \catcode`\^^G=\other | |
|   \catcode`\^^H=\other | |
|   \catcode`\^^K=\other | |
|   \catcode`\^^L=\other | |
|   \catcode`\^^N=\other | |
|   \catcode`\^^P=\other | |
|   \catcode`\^^Q=\other | |
|   \catcode`\^^R=\other | |
|   \catcode`\^^S=\other | |
|   \catcode`\^^T=\other | |
|   \catcode`\^^U=\other | |
|   \catcode`\^^V=\other | |
|   \catcode`\^^W=\other | |
|   \catcode`\^^X=\other | |
|   \catcode`\^^Z=\other | |
|   \catcode`\^^[=\other | |
|   \catcode`\^^\=\other | |
|   \catcode`\^^]=\other | |
|   \catcode`\^^^=\other | |
|   \catcode`\^^_=\other | |
|   \catcode`\@=\other | |
|   \catcode`\^=\other | |
|   % It was suggested to define this as 7, which would allow ^^e4 etc. | |
|   % in xref tags, i.e., node names.  But since ^^e4 notation isn't | |
|   % supported in the main text, it doesn't seem desirable.  Furthermore, | |
|   % that is not enough: for node names that actually contain a ^ | |
|   % character, we would end up writing a line like this: 'xrdef {'hat | |
|   % b-title}{'hat b} and \xrdef does a \csname...\endcsname on the first | |
|   % argument, and \hat is not an expandable control sequence.  It could | |
|   % all be worked out, but why?  Either we support ^^ or we don't. | |
|   % | |
|   % The other change necessary for this was to define \auxhat: | |
|   % \def\auxhat{\def^{'hat }}% extra space so ok if followed by letter | |
|   % and then to call \auxhat in \setq. | |
|   % | |
|   \catcode`\~=\other | |
|   \catcode`\[=\other | |
|   \catcode`\]=\other | |
|   \catcode`\"=\other | |
|   \catcode`\_=\other | |
|   \catcode`\|=\other | |
|   \catcode`\<=\other | |
|   \catcode`\>=\other | |
|   \catcode`\$=\other | |
|   \catcode`\#=\other | |
|   \catcode`\&=\other | |
|   \catcode`+=\other % avoid \+ for paranoia even though we've turned it off | |
|   % Make the characters 128-255 be printing characters | |
|   {% | |
|     \count 1=128 | |
|     \def\loop{% | |
|       \catcode\count 1=\other | |
|       \advance\count 1 by 1 | |
|       \ifnum \count 1<256 \loop \fi | |
|     }% | |
|   }% | |
|   % The aux file uses ' as the escape (for now). | |
|   % Turn off \ as an escape so we do not lose on | |
|   % entries which were dumped with control sequences in their names. | |
|   % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^ | |
|   % Reference to such entries still does not work the way one would wish, | |
|   % but at least they do not bomb out when the aux file is read in. | |
|   \catcode`\{=1 | |
|   \catcode`\}=2 | |
|   \catcode`\%=\other | |
|   \catcode`\'=0 | |
|   \catcode`\\=\other | |
|   % | |
|   \openin 1 \jobname.aux | |
|   \ifeof 1 \else | |
|     \closein 1 | |
|     \input \jobname.aux | |
|     \global\havexrefstrue | |
|     \global\warnedobstrue | |
|   \fi | |
|   % Open the new aux file.  TeX will close it automatically at exit. | |
|   \openout\auxfile=\jobname.aux | |
| \endgroup} | |
| 
 | |
| 
 | |
| % Footnotes. | |
|  | |
| \newcount \footnoteno | |
| 
 | |
| % The trailing space in the following definition for supereject is | |
| % vital for proper filling; pages come out unaligned when you do a | |
| % pagealignmacro call if that space before the closing brace is | |
| % removed. (Generally, numeric constants should always be followed by a | |
| % space to prevent strange expansion errors.) | |
| \def\supereject{\par\penalty -20000\footnoteno =0 } | |
| 
 | |
| % @footnotestyle is meaningful for info output only. | |
| \let\footnotestyle=\comment | |
| 
 | |
| \let\ptexfootnote=\footnote | |
| 
 | |
| {\catcode `\@=11 | |
| % | |
| % Auto-number footnotes.  Otherwise like plain. | |
| \gdef\footnote{% | |
|   \global\advance\footnoteno by \@ne | |
|   \edef\thisfootno{$^{\the\footnoteno}$}% | |
|   % | |
|   % In case the footnote comes at the end of a sentence, preserve the | |
|   % extra spacing after we do the footnote number. | |
|   \let\@sf\empty | |
|   \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi | |
|   % | |
|   % Remove inadvertent blank space before typesetting the footnote number. | |
|   \unskip | |
|   \thisfootno\@sf | |
|   \footnotezzz | |
| }% | |
|  | |
| % Don't bother with the trickery in plain.tex to not require the | |
| % footnote text as a parameter.  Our footnotes don't need to be so general. | |
| % | |
| % Oh yes, they do; otherwise, @ifset and anything else that uses | |
| % \parseargline fail inside footnotes because the tokens are fixed when | |
| % the footnote is read.  --karl, 16nov96. | |
| % | |
| \long\gdef\footnotezzz{\insert\footins\bgroup | |
|   % We want to typeset this text as a normal paragraph, even if the | |
|   % footnote reference occurs in (for example) a display environment. | |
|   % So reset some parameters. | |
|   \interlinepenalty\interfootnotelinepenalty | |
|   \splittopskip\ht\strutbox % top baseline for broken footnotes | |
|   \splitmaxdepth\dp\strutbox | |
|   \floatingpenalty\@MM | |
|   \leftskip\z@skip | |
|   \rightskip\z@skip | |
|   \spaceskip\z@skip | |
|   \xspaceskip\z@skip | |
|   \parindent\defaultparindent | |
|   % | |
|   \smallfonts \rm | |
|   % | |
|   % Hang the footnote text off the number. | |
|   \hang | |
|   \textindent{\thisfootno}% | |
|   % | |
|   % Don't crash into the line above the footnote text.  Since this | |
|   % expands into a box, it must come within the paragraph, lest it | |
|   % provide a place where TeX can split the footnote. | |
|   \footstrut | |
|   \futurelet\next\fo@t | |
| } | |
| \def\fo@t{\ifcat\bgroup\noexpand\next \let\next\f@@t | |
|   \else\let\next\f@t\fi \next} | |
| \def\f@@t{\bgroup\aftergroup\@foot\let\next} | |
| \def\f@t#1{#1\@foot} | |
| \def\@foot{\strut\par\egroup} | |
| 
 | |
| }%end \catcode `\@=11 | |
|  | |
| % Set the baselineskip to #1, and the lineskip and strut size | |
| % correspondingly.  There is no deep meaning behind these magic numbers | |
| % used as factors; they just match (closely enough) what Knuth defined. | |
| % | |
| \def\lineskipfactor{.08333} | |
| \def\strutheightpercent{.70833} | |
| \def\strutdepthpercent {.29167} | |
| % | |
| \def\setleading#1{% | |
|   \normalbaselineskip = #1\relax | |
|   \normallineskip = \lineskipfactor\normalbaselineskip | |
|   \normalbaselines | |
|   \setbox\strutbox =\hbox{% | |
|     \vrule width0pt height\strutheightpercent\baselineskip | |
|                     depth \strutdepthpercent \baselineskip | |
|   }% | |
| } | |
| 
 | |
| % @| inserts a changebar to the left of the current line.  It should | |
| % surround any changed text.  This approach does *not* work if the | |
| % change spans more than two lines of output.  To handle that, we would | |
| % have adopt a much more difficult approach (putting marks into the main | |
| % vertical list for the beginning and end of each change). | |
| % | |
| \def\|{% | |
|   % \vadjust can only be used in horizontal mode. | |
|   \leavevmode | |
|   % | |
|   % Append this vertical mode material after the current line in the output. | |
|   \vadjust{% | |
|     % We want to insert a rule with the height and depth of the current | |
|     % leading; that is exactly what \strutbox is supposed to record. | |
|     \vskip-\baselineskip | |
|     % | |
|     % \vadjust-items are inserted at the left edge of the type.  So | |
|     % the \llap here moves out into the left-hand margin. | |
|     \llap{% | |
|       % | |
|       % For a thicker or thinner bar, change the `1pt'. | |
|       \vrule height\baselineskip width1pt | |
|       % | |
|       % This is the space between the bar and the text. | |
|       \hskip 12pt | |
|     }% | |
|   }% | |
| } | |
| 
 | |
| % For a final copy, take out the rectangles | |
| % that mark overfull boxes (in case you have decided | |
| % that the text looks ok even though it passes the margin). | |
| % | |
| \def\finalout{\overfullrule=0pt} | |
| 
 | |
| % @image.  We use the macros from epsf.tex to support this. | |
| % If epsf.tex is not installed and @image is used, we complain. | |
| % | |
| % Check for and read epsf.tex up front.  If we read it only at @image | |
| % time, we might be inside a group, and then its definitions would get | |
| % undone and the next image would fail. | |
| \openin 1 = epsf.tex | |
| \ifeof 1 \else | |
|   \closein 1 | |
|   % Do not bother showing banner with post-v2.7 epsf.tex (available in | |
|   % doc/epsf.tex until it shows up on ctan). | |
|   \def\epsfannounce{\toks0 = }% | |
|   \input epsf.tex | |
| \fi | |
| % | |
| % We will only complain once about lack of epsf.tex. | |
| \newif\ifwarnednoepsf | |
| \newhelp\noepsfhelp{epsf.tex must be installed for images to | |
|   work.  It is also included in the Texinfo distribution, or you can get | |
|   it from ftp://tug.org/tex/epsf.tex.} | |
| % | |
| \def\image#1{% | |
|   \ifx\epsfbox\undefined | |
|     \ifwarnednoepsf \else | |
|       \errhelp = \noepsfhelp | |
|       \errmessage{epsf.tex not found, images will be ignored}% | |
|       \global\warnednoepsftrue | |
|     \fi | |
|   \else | |
|     \imagexxx #1,,,\finish | |
|   \fi | |
| } | |
| % | |
| % Arguments to @image: | |
| % #1 is (mandatory) image filename; we tack on .eps extension. | |
| % #2 is (optional) width, #3 is (optional) height. | |
| % #4 is just the usual extra ignored arg for parsing this stuff. | |
| \def\imagexxx#1,#2,#3,#4\finish{% | |
|   \ifpdf | |
|     \centerline{\dopdfimage{#1}{#2}{#3}}% | |
|   \else | |
|     % \epsfbox itself resets \epsf?size at each figure. | |
|     \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \epsfxsize=#2\relax \fi | |
|     \setbox0 = \hbox{\ignorespaces #3}\ifdim\wd0 > 0pt \epsfysize=#3\relax \fi | |
|     \begingroup | |
|       \catcode`\^^M = 5 % in case we're inside an example | |
|       % If the image is by itself, center it. | |
|       \ifvmode | |
|         \nobreak\bigskip | |
|         % Usually we'll have text after the image which will insert | |
|         % \parskip glue, so insert it here too to equalize the space | |
|         % above and below.  | |
|         \nobreak\vskip\parskip | |
|         \nobreak | |
|         \centerline{\epsfbox{#1.eps}}% | |
|         \bigbreak | |
|       \else | |
|         % In the middle of a paragraph, no extra space. | |
|         \epsfbox{#1.eps}% | |
|       \fi | |
|     \endgroup | |
|   \fi | |
| } | |
| 
 | |
| 
 | |
| \message{localization,} | |
| % and i18n. | |
|  | |
| % @documentlanguage is usually given very early, just after | |
| % @setfilename.  If done too late, it may not override everything | |
| % properly.  Single argument is the language abbreviation. | |
| % It would be nice if we could set up a hyphenation file here. | |
| % | |
| \def\documentlanguage{\parsearg\dodocumentlanguage} | |
| \def\dodocumentlanguage#1{% | |
|   \tex % read txi-??.tex file in plain TeX. | |
|   % Read the file if it exists. | |
|   \openin 1 txi-#1.tex | |
|   \ifeof1 | |
|     \errhelp = \nolanghelp | |
|     \errmessage{Cannot read language file txi-#1.tex}% | |
|     \let\temp = \relax | |
|   \else | |
|     \def\temp{\input txi-#1.tex }% | |
|   \fi | |
|   \temp | |
|   \endgroup | |
| } | |
| \newhelp\nolanghelp{The given language definition file cannot be found or | |
| is empty.  Maybe you need to install it?  In the current directory | |
| should work if nowhere else does.} | |
| 
 | |
| 
 | |
| % @documentencoding should change something in TeX eventually, most | |
| % likely, but for now just recognize it. | |
| \let\documentencoding = \comment | |
| 
 | |
| 
 | |
| % Page size parameters. | |
| % | |
| \newdimen\defaultparindent \defaultparindent = 15pt | |
| 
 | |
| \chapheadingskip = 15pt plus 4pt minus 2pt | |
| \secheadingskip = 12pt plus 3pt minus 2pt | |
| \subsecheadingskip = 9pt plus 2pt minus 2pt | |
| 
 | |
| % Prevent underfull vbox error messages. | |
| \vbadness = 10000 | |
| 
 | |
| % Don't be so finicky about underfull hboxes, either. | |
| \hbadness = 2000 | |
| 
 | |
| % Following George Bush, just get rid of widows and orphans. | |
| \widowpenalty=10000 | |
| \clubpenalty=10000 | |
| 
 | |
| % Use TeX 3.0's \emergencystretch to help line breaking, but if we're | |
| % using an old version of TeX, don't do anything.  We want the amount of | |
| % stretch added to depend on the line length, hence the dependence on | |
| % \hsize.  We call this whenever the paper size is set. | |
| % | |
| \def\setemergencystretch{% | |
|   \ifx\emergencystretch\thisisundefined | |
|     % Allow us to assign to \emergencystretch anyway. | |
|     \def\emergencystretch{\dimen0}% | |
|   \else | |
|     \emergencystretch = .15\hsize | |
|   \fi | |
| } | |
| 
 | |
| % Parameters in order: 1) textheight; 2) textwidth; 3) voffset; | |
| % 4) hoffset; 5) binding offset; 6) topskip.  Then whoever calls us can | |
| % set \parskip and call \setleading for \baselineskip. | |
| % | |
| \def\internalpagesizes#1#2#3#4#5#6{% | |
|   \voffset = #3\relax | |
|   \topskip = #6\relax | |
|   \splittopskip = \topskip | |
|   % | |
|   \vsize = #1\relax | |
|   \advance\vsize by \topskip | |
|   \outervsize = \vsize | |
|   \advance\outervsize by 2\topandbottommargin | |
|   \pageheight = \vsize | |
|   % CLN wants a little wider page, hence we enlarge the width by 0.6in... | |
|   \hsize = #2\relax | |
|   \outerhsize = \hsize | |
|   \advance\outerhsize by 0.5in | |
|   \advance\hsize by 0.6in | |
|   \pagewidth = \hsize | |
|   % ...wich also calls for a change in the hoffset. | |
|   \normaloffset = #4\relax | |
|   \advance\normaloffset by -0.3in | |
|   \bindingoffset = #5\relax | |
|   % | |
|   \parindent = \defaultparindent | |
|   \setemergencystretch | |
| } | |
| 
 | |
| % @letterpaper (the default). | |
| \def\letterpaper{{\globaldefs = 1 | |
|   \parskip = 3pt plus 2pt minus 1pt | |
|   \setleading{13.2pt}% | |
|   % | |
|   % If page is nothing but text, make it come out even. | |
|   \internalpagesizes{46\baselineskip}{6in}{\voffset}{.25in}{\bindingoffset}{36pt}% | |
| }} | |
| 
 | |
| % Use @smallbook to reset parameters for 7x9.5 (or so) format. | |
| \def\smallbook{{\globaldefs = 1 | |
|   \parskip = 2pt plus 1pt | |
|   \setleading{12pt}% | |
|   % | |
|   \internalpagesizes{7.5in}{5.in}{\voffset}{.25in}{\bindingoffset}{16pt}% | |
|   % | |
|   \lispnarrowing = 0.3in | |
|   \tolerance = 700 | |
|   \hfuzz = 1pt | |
|   \contentsrightmargin = 0pt | |
|   \deftypemargin = 0pt | |
|   \defbodyindent = .5cm | |
|   % | |
|   \let\smalldisplay = \smalldisplayx | |
|   \let\smallexample = \smalllispx | |
|   \let\smallformat = \smallformatx | |
|   \let\smalllisp = \smalllispx | |
| }} | |
| 
 | |
| % Use @afourpaper to print on European A4 paper. | |
| \def\afourpaper{{\globaldefs = 1 | |
|   \setleading{12pt}% | |
|   \parskip = 3pt plus 2pt minus 1pt | |
|   % | |
|   \internalpagesizes{53\baselineskip}{160mm}{\voffset}{4mm}{\bindingoffset}{44pt}% | |
|   % | |
|   \tolerance = 700 | |
|   \hfuzz = 1pt | |
| }} | |
| 
 | |
| % A specific text layout, 24x15cm overall, intended for A4 paper.  Top margin | |
| % 29mm, hence bottom margin 28mm, nominal side margin 3cm. | |
| \def\afourlatex{{\globaldefs = 1 | |
|   \setleading{13.6pt}% | |
|   % | |
|   \afourpaper | |
|   \internalpagesizes{237mm}{150mm}{3.6mm}{3.6mm}{3mm}{7mm}% | |
|   % | |
|   \globaldefs = 0 | |
| }} | |
| 
 | |
| % Use @afourwide to print on European A4 paper in wide format. | |
| \def\afourwide{% | |
|   \afourpaper | |
|   \internalpagesizes{6.5in}{9.5in}{\hoffset}{\normaloffset}{\bindingoffset}{7mm}% | |
|   % | |
|   \globaldefs = 0 | |
| } | |
| 
 | |
| % @pagesizes TEXTHEIGHT[,TEXTWIDTH] | |
| % Perhaps we should allow setting the margins, \topskip, \parskip, | |
| % and/or leading, also. Or perhaps we should compute them somehow. | |
| % | |
| \def\pagesizes{\parsearg\pagesizesxxx} | |
| \def\pagesizesxxx#1{\pagesizesyyy #1,,\finish} | |
| \def\pagesizesyyy#1,#2,#3\finish{{% | |
|   \setbox0 = \hbox{\ignorespaces #2}\ifdim\wd0 > 0pt \hsize=#2\relax \fi | |
|   \globaldefs = 1 | |
|   % | |
|   \parskip = 3pt plus 2pt minus 1pt | |
|   \setleading{13.2pt}% | |
|   % | |
|   \internalpagesizes{#1}{\hsize}{\voffset}{\normaloffset}{\bindingoffset}{44pt}% | |
| }} | |
| 
 | |
| % Set default to letter. | |
| % | |
| \letterpaper | |
| 
 | |
| 
 | |
| \message{and turning on texinfo input format.} | |
| 
 | |
| % Define macros to output various characters with catcode for normal text. | |
| \catcode`\"=\other | |
| \catcode`\~=\other | |
| \catcode`\^=\other | |
| \catcode`\_=\other | |
| \catcode`\|=\other | |
| \catcode`\<=\other | |
| \catcode`\>=\other | |
| \catcode`\+=\other | |
| \catcode`\$=\other | |
| \def\normaldoublequote{"} | |
| \def\normaltilde{~} | |
| \def\normalcaret{^} | |
| \def\normalunderscore{_} | |
| \def\normalverticalbar{|} | |
| \def\normalless{<} | |
| \def\normalgreater{>} | |
| \def\normalplus{+} | |
| \def\normaldollar{$} | |
|  | |
| % This macro is used to make a character print one way in ttfont | |
| % where it can probably just be output, and another way in other fonts, | |
| % where something hairier probably needs to be done. | |
| % | |
| % #1 is what to print if we are indeed using \tt; #2 is what to print | |
| % otherwise.  Since all the Computer Modern typewriter fonts have zero | |
| % interword stretch (and shrink), and it is reasonable to expect all | |
| % typewriter fonts to have this, we can check that font parameter. | |
| % | |
| \def\ifusingtt#1#2{\ifdim \fontdimen3\font=0pt #1\else #2\fi} | |
|  | |
| % Same as above, but check for italic font.  Actually this also catches | |
| % non-italic slanted fonts since it is impossible to distinguish them from | |
| % italic fonts.  But since this is only used by $ and it uses \sl anyway | |
| % this is not a problem. | |
| \def\ifusingit#1#2{\ifdim \fontdimen1\font>0pt #1\else #2\fi} | |
|  | |
| % Turn off all special characters except @ | |
| % (and those which the user can use as if they were ordinary). | |
| % Most of these we simply print from the \tt font, but for some, we can | |
| % use math or other variants that look better in normal text. | |
|  | |
| \catcode`\"=\active | |
| \def\activedoublequote{{\tt\char34}} | |
| \let"=\activedoublequote | |
| \catcode`\~=\active | |
| \def~{{\tt\char126}} | |
| \chardef\hat=`\^ | |
| \catcode`\^=\active | |
| \def^{{\tt \hat}} | |
|  | |
| \catcode`\_=\active | |
| \def_{\ifusingtt\normalunderscore\_} | |
| % Subroutine for the previous macro. | |
| \def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}} | |
|  | |
| \catcode`\|=\active | |
| \def|{{\tt\char124}} | |
| \chardef \less=`\< | |
| \catcode`\<=\active | |
| \def<{{\tt \less}} | |
| \chardef \gtr=`\> | |
| \catcode`\>=\active | |
| \def>{{\tt \gtr}} | |
| \catcode`\+=\active | |
| \def+{{\tt \char 43}} | |
| \catcode`\$=\active | |
| \def${\ifusingit{{\sl\$}}\normaldollar} | |
| %\catcode 27=\active | |
| %\def^^[{$\diamondsuit$} | |
|  | |
| % Set up an active definition for =, but don't enable it most of the time. | |
| {\catcode`\==\active | |
| \global\def={{\tt \char 61}}} | |
| 
 | |
| \catcode`+=\active | |
| \catcode`\_=\active | |
| 
 | |
| % If a .fmt file is being used, characters that might appear in a file | |
| % name cannot be active until we have parsed the command line. | |
| % So turn them off again, and have \everyjob (or @setfilename) turn them on. | |
| % \otherifyactive is called near the end of this file. | |
| \def\otherifyactive{\catcode`+=\other \catcode`\_=\other} | |
| 
 | |
| \catcode`\@=0 | |
| 
 | |
| % \rawbackslashxx output one backslash character in current font | |
| \global\chardef\rawbackslashxx=`\\ | |
| %{\catcode`\\=\other | |
| %@gdef@rawbackslashxx{\}} | |
|  | |
| % \rawbackslash redefines \ as input to do \rawbackslashxx. | |
| {\catcode`\\=\active | |
| @gdef@rawbackslash{@let\=@rawbackslashxx }} | |
| 
 | |
| % \normalbackslash outputs one backslash in fixed width font. | |
| \def\normalbackslash{{\tt\rawbackslashxx}} | |
| 
 | |
| % \catcode 17=0   % Define control-q | |
| \catcode`\\=\active | |
| 
 | |
| % Used sometimes to turn off (effectively) the active characters | |
| % even after parsing them. | |
| @def@turnoffactive{@let"=@normaldoublequote | |
| @let\=@realbackslash | |
| @let~=@normaltilde | |
| @let^=@normalcaret | |
| @let_=@normalunderscore | |
| @let|=@normalverticalbar | |
| @let<=@normalless | |
| @let>=@normalgreater | |
| @let+=@normalplus | |
| @let$=@normaldollar} | |
|  | |
| @def@normalturnoffactive{@let"=@normaldoublequote | |
| @let\=@normalbackslash | |
| @let~=@normaltilde | |
| @let^=@normalcaret | |
| @let_=@normalunderscore | |
| @let|=@normalverticalbar | |
| @let<=@normalless | |
| @let>=@normalgreater | |
| @let+=@normalplus | |
| @let$=@normaldollar} | |
| 
 | |
| % Make _ and + \other characters, temporarily. | |
| % This is canceled by @fixbackslash. | |
| @otherifyactive | |
| 
 | |
| % If a .fmt file is being used, we don't want the `\input texinfo' to show up. | |
| % That is what \eatinput is for; after that, the `\' should revert to printing | |
| % a backslash. | |
| % | |
| @gdef@eatinput input texinfo{@fixbackslash} | |
| @global@let\ = @eatinput | |
| 
 | |
| % On the other hand, perhaps the file did not have a `\input texinfo'. Then | |
| % the first `\{ in the file would cause an error. This macro tries to fix | |
| % that, assuming it is called before the first `\' could plausibly occur. | |
| % Also back turn on active characters that might appear in the input | |
| % file name, in case not using a pre-dumped format. | |
| % | |
| @gdef@fixbackslash{% | |
|   @ifx\@eatinput @let\ = @normalbackslash @fi | |
|   @catcode`+=@active | |
|   @catcode`@_=@active | |
| } | |
| 
 | |
| % Say @foo, not \foo, in error messages. | |
| @escapechar = `@@ | |
| 
 | |
| % These look ok in all fonts, so just make them not special.   | |
| @catcode`@& = @other | |
| @catcode`@# = @other | |
| @catcode`@% = @other | |
|  | |
| @c Set initial fonts. | |
| @textfonts | |
| @rm | |
| 
 | |
| 
 | |
| @c Local variables: | |
| @c eval: (add-hook 'write-file-hooks 'time-stamp) | |
| @c page-delimiter: "^\\\\message" | |
| @c time-stamp-start: "def\\\\texinfoversion{" | |
| @c time-stamp-format: "%:y-%02m-%02d.%02H" | |
| @c time-stamp-end: "}" | |
| @c End:
 |