📄 texinfo.tex
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\setbox0 = \hbox{\ignorespaces #2}% \ifdim\wd0 > 0pt \def\lefttext{#1}% have both texts \def\righttext{#2}% \else \def\lefttext{#1}% have only one text \def\righttext{#1}% \fi % \ifodd\pageno \def\temp{\inrightmargin\righttext}% odd page -> outside is right margin \else \def\temp{\inleftmargin\lefttext}% \fi \temp}% @include file insert text of that file as input.% Allow normal characters that we make active in the argument (a file name).\def\include{\begingroup \catcode`\\=\other \catcode`~=\other \catcode`^=\other \catcode`_=\other \catcode`|=\other \catcode`<=\other \catcode`>=\other \catcode`+=\other \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}% \let\value=\expandablevalue \input\thisfile\endgroup}\def\thisfile{}% @center line% outputs that line, centered.%\def\center{\parsearg\docenter}\def\docenter#1{{% \ifhmode \hfil\break \fi \advance\hsize by -\leftskip \advance\hsize by -\rightskip \line{\hfil \ignorespaces#1\unskip \hfil}% \ifhmode \break \fi}}% @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 outputs its argument in math mode.% We don't use $'s directly in the definition of \math because we need% to set catcodes according to plain TeX first, to allow for subscripts,% superscripts, special math chars, etc.% \let\implicitmath = $%$ font-lock fix%% One complication: _ usually means subscripts, but it could also mean% an actual _ character, as in @math{@var{some_variable} + 1}. So make% _ within @math be active (mathcode "8000), and distinguish by seeing% if the current family is \slfam, which is what @var uses.% {\catcode\underChar = \active\gdef\mathunderscore{% \catcode\underChar=\active \def_{\ifnum\fam=\slfam \_\else\sb\fi}%}}%% Another complication: we want \\ (and @\) to output a \ character.% FYI, plain.tex uses \\ as a temporary control sequence (why?), but% this is not advertised and we don't care. Texinfo does not% otherwise define @\.% % The \mathchar is class=0=ordinary, family=7=ttfam, position=5C=\.\def\mathbackslash{\ifnum\fam=\ttfam \mathchar"075C \else\backslash \fi}%\def\math{% \tex \mathcode`\_="8000 \mathunderscore \let\\ = \mathbackslash \mathactive \implicitmath\finishmath}\def\finishmath#1{#1\implicitmath\Etex}% Some active characters (such as <) are spaced differently in math.% We have to reset their definitions in case the @math was an% argument to a command which set the catcodes (such as @item or @section).% { \catcode`^ = \active \catcode`< = \active \catcode`> = \active \catcode`+ = \active \gdef\mathactive{% \let^ = \ptexhat \let< = \ptexless \let> = \ptexgtr \let+ = \ptexplus }}% @bullet and @minus need the same treatment as @math, just above.\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}% % without \immediate, pdftex seg faults when the same image is % included twice. (Version 3.14159-pre-1.0-unofficial-20010704.) \ifnum\pdftexversion < 14 \immediate\pdfimage \else \immediate\pdfximage \fi \ifx\empty\imagewidth\else width \imagewidth \fi \ifx\empty\imageheight\else height \imageheight \fi \ifnum\pdftexversion<13 #1.pdf% \else {#1.pdf}% \fi \ifnum\pdftexversion < 14 \else \pdfrefximage \pdflastximage \fi} \def\pdfmkdest#1{{\normalturnoffactive \pdfdest name{#1} xyz}} \def\pdfmkpgn#1{#1} \let\linkcolor = \Blue % was Cyan, but that seems light? \def\endlink{\Black\pdfendlink} % Adding outlines to PDF; macros for calculating structure of outlines % come from Petr Olsak \def\expnumber#1{\expandafter\ifx\csname#1\endcsname\relax 0% \else \csname#1\endcsname \fi} \def\advancenumber#1{\tempnum=\expnumber{#1}\relax \advance\tempnum by1 \expandafter\xdef\csname#1\endcsname{\the\tempnum}} \def\pdfmakeoutlines{{% \openin 1 \jobname.toc \ifeof 1\else\begingroup \closein 1 % 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\secentry ##1##2##3##4{\advancenumber{chap##2}} \def\subsecentry ##1##2##3##4##5{\advancenumber{sec##2.##3}} \def\subsubsecentry ##1##2##3##4##5##6{\advancenumber{subsec##2.##3.##4}} \let\appendixentry = \chapentry \let\unnumbchapentry = \chapentry \let\unnumbsecentry = \secentry \let\unnumbsubsecentry = \subsecentry \let\unnumbsubsubsecentry = \subsubsecentry \input \jobname.toc \def\chapentry ##1##2##3{% \pdfoutline goto name{\pdfmkpgn{##3}}count-\expnumber{chap##2}{##1}} \def\secentry ##1##2##3##4{% \pdfoutline goto name{\pdfmkpgn{##4}}count-\expnumber{sec##2.##3}{##1}} \def\subsecentry ##1##2##3##4##5{% \pdfoutline goto name{\pdfmkpgn{##5}}count-\expnumber{subsec##2.##3.##4}{##1}} \def\subsubsecentry ##1##2##3##4##5##6{% \pdfoutline goto name{\pdfmkpgn{##6}}{##1}} \let\appendixentry = \chapentry \let\unnumbchapentry = \chapentry \let\unnumbsecentry = \secentry \let\unnumbsubsecentry = \subsecentry \let\unnumbsubsubsecentry = \subsubsecentry % % Make special characters normal for writing to the pdf file. % \indexnofonts \let\tt=\relax \turnoffactive \input \jobname.toc \endgroup\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\@{@}% \let\value=\expandablevalue \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{\pdfmkpgn{#1}} \linkcolor #1\endlink} \def\done{\edef\st{\global\noexpand\toksA={\the\toksB}}\st}\fi % \ifx\pdfoutput
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