Plan 9 from Bell Labs’s /usr/web/sources/contrib/steve/root/sys/lib/texmf/tex/latex/tools/varioref.sty

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


%%
%% This is file `varioref.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% varioref.dtx  (with options: `package')
%% 
%% IMPORTANT NOTICE:
%% 
%% This file is a generated file from the sources of the `tools' bundle
%% in the LaTeX2e distribution.
%% 
%% For the copyright notice see the source file(s).
%% 
%% You are not allowed to modify this file.
%% 
%% You are allowed to distribute this file if and only if
%% it is distributed with the corresponding source files in
%% the `tools' bundle.
%% 
%% For the copying and distribution conditions of the source files,
%% see the file readme.txt distributed with the tools bundle.
%% 
%% Package varioref to use with LaTeX2e
%% Copyright (C) 1992-1995  Frank Mittelbach, all rights reserved.
\NeedsTeXFormat{LaTeX2e}[1995/05/16]
\ProvidesPackage{varioref}
    [1995/10/19 v1.1b package for extended references (FMi)]
%% \CharacterTable
%%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%%   Digits        \0\1\2\3\4\5\6\7\8\9
%%   Exclamation   \!     Double quote  \"     Hash (number) \#
%%   Dollar        \$     Percent       \%     Ampersand     \&
%%   Acute accent  \'     Left paren    \(     Right paren   \)
%%   Asterisk      \*     Plus          \+     Comma         \,
%%   Minus         \-     Point         \.     Solidus       \/
%%   Colon         \:     Semicolon     \;     Less than     \<
%%   Equals        \=     Greater than  \>     Question mark \?
%%   Commercial at \@     Left bracket  \[     Backslash     \\
%%   Right bracket \]     Circumflex    \^     Underscore    \_
%%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%%   Right brace   \}     Tilde         \~}
%%
\def\vref@addto#1#2{%
  #2%
  \@temptokena{#2}%
  \ifx#1\undefined
     \edef#1{\the\@temptokena}%
  \else
     \toks@\expandafter{#1}%
     \edef#1{\the\toks@\the\@temptokena}%
  \fi
  \@temptokena{}\toks@\@temptokena
}
\@onlypreamble\vref@addto
\def\vref@excuse#1{%
  \PackageWarningNoLine{varioref}{Sorry, language `#1'
            not supported%
            \MessageBreak
            by in this version.
            English strings used by default.
            \MessageBreak
            Please Modify \protect\reftext... commands manually.%
            \MessageBreak\MessageBreak
            If you can suggest translations for
            this language,%
            \MessageBreak
            please mail your them
            to the author of this package}}
\@onlypreamble\vref@excuse
\DeclareOption{american}
  {\vref@addto\extrasamerican{%%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{austrian}
  {\vref@excuse{austrian}%
   \vref@addto\extrasaustrian{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{brazil}
  {\vref@addto\extrabrazil{%
    \def\reftextfaceafter {na \reftextvario{p\'agina oposta}{pr\'oxima
                           p\'agina}}%
    \def\reftextfacebefore{na p\'agina \reftextvario{oposta}{anterior}}%
    \def\reftextafter     {na \reftextvario{p\'agina seguinte}{pr\'oxima
                           p\'agina}}%
    \def\reftextbefore{na p\'agina \reftextvario{anterior}{precedente}}%
    \def\reftextcurrent   {\reftextvario{nesta p\'agina}{na p\'agina
                           corrente}}%
    \def\reftextfaraway#1{na p\'agina~\pageref{#1}}%
  }}
\DeclareOption{breton}
  {\vref@excuse{breton}%
   \vref@addto\extrasbreton{%
    \def\reftextfaceafter {war ar bajenn \reftextvario{a-dal}{da heul}}%
    \def\reftextfacebefore{war ar bajenn \reftextvario{a-dal}{a-raok}}%
    \def\reftextafter     {war ar bajenn da heul}%
    \def\reftextbefore    {war ar bajenn a-raok}%
    \def\reftextcurrent   {war ar \reftextvario{bajenn-ma\~n}%
                                               {bajenn war-wel}}%
    \def\reftextfaraway#1{war ar bajenn~\pageref{#1}}%
  }}
\DeclareOption{catalan}
  {\vref@excuse{catalan}%
   \vref@addto\extrascatalan{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{croatian}
  {\vref@excuse{croatian}%
   \vref@addto\extrascroatian{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{czech}
  {\vref@excuse{czech}%
   \vref@addto\extrasczech{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{danish}
  {\vref@addto\extrasdanish{%
    \def\reftextfaceafter {p\aa{} \reftextvario{modst\aa ende}%
                                               {n\ae ste} side}%
    \def\reftextfacebefore{p\aa{} \reftextvario{modst\aa ende}%
                                               {forrige} side}%
    \def\reftextafter     {p\aa{} \reftextvario{den f\o lgende}%
                                               {n\ae ste} side}%
    \def\reftextbefore    {p\aa{} \reftextvario{forrige side}
                                               {foreg\aa ende side}}%
    \def\reftextcurrent   {p\aa{} denne side}%
    \def\reftextfaraway#1{p\aa{} side~\pageref{#1}}%
  }}
\DeclareOption{dutch}
  {\vref@addto\extrasdutch{%
    \def\refpagename{pagina}%
    \def\reftextfaceafter {op de \reftextvario{rechter \refpagename}%
                                          {\refpagename\ hiernaast}}%
    \def\reftextfacebefore{op de \reftextvario{linker \refpagename}%
                                         {\refpagename\ hiernaast}}%
    \def\reftextafter     {op de \reftextvario{volgende \refpagename}%
                                              {\refpagename\ hierna}}%
    \def\reftextbefore    {op de \reftextvario{vorige \refpagename}%
                                          {\refpagename\ hiervoor}}%
    \def\reftextcurrent   {op deze \refpagename}%
    \def\reftextfaraway#1{op \refpagename~\pageref{#1}}%
  }}
\DeclareOption{english}
  {\vref@addto\extrasenglish{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{esperanto}
  {\vref@excuse{esperanto}%
   \vref@addto\extrasesperanto{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{finnish}
  {\vref@addto\extrasfinnish{%
    \def\reftextfaceafter {\reftextvario{viereisell\"a}%
                                        {seuraavalla} sivulla}%
    \def\reftextfacebefore{\reftextvario{viereisell\"a}%
                                        {edellisell\"a} sivulla}%
    \def\reftextafter     {seuraavalla sivulla}%
    \def\reftextbefore    {edellisell\"a sivulla}%
    \def\reftextcurrent   {t\"all\"a sivulla}%
    \def\reftextfaraway#1{sivulla~\pageref{#1}}%
  }}
\DeclareOption{french}
  {\vref@addto\extrasfrench{%
    \def\reftextfaceafter {page \reftextvario{ci-contre}{suivante}}%
    \def\reftextfacebefore{page \reftextvario{ci-contre}%
                          {pr\'ec\'edente}}%
    \def\reftextafter     {page suivante}%
    \def\reftextbefore    {page pr\'ec\'edente}%
    \def\reftextcurrent   {de la pr\'esente page}%
    \def\reftextfaraway#1{page~\pageref{#1}}%
  }}
\DeclareOption{galician}
  {\vref@excuse{galician}%
   \vref@addto\extrasgalician{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{german}
  {\vref@addto\extrasgerman{%
    \def\reftextfaceafter {auf der n\"achsten Seite}%
    \def\reftextfacebefore{auf der vorherigen Seite}%
    \let\reftextafter     \reftextfaceafter
    \let\reftextbefore    \reftextfacebefore
    \def\reftextcurrent   {auf dieser Seite}%
    \def\reftextfaraway#1{auf Seite~\pageref{#1}}%
  }}
\DeclareOption{italian}
  {\vref@excuse{italian}%
   \vref@addto\extrasitalian{%
    \def\reftextfaceafter {\reftextvario{a fronte}%
                           {nella pagina successiva}}%
    \def\reftextfacebefore{\reftextvario{a fronte}%
                           {nella pagina precedente}}%
    \def\reftextafter     {nella pagina \reftextvario{seguente}%
                           {successiva}}%
    \def\reftextbefore    {nella pagina precedente}%
    \def\reftextcurrent   {in questa pagina}%
    \def\reftextfaraway#1{a pagina~\pageref{#1}}%
  }}
\DeclareOption{magyar}
  {\vref@excuse{magyar}%
   \vref@addto\extrasmagyar{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{norsk}
  {\vref@addto\extrasnorsk{%
    \def\reftextfaceafter {p\aa{} \reftextvario{motst\aa{}ende}{neste}
                           side}%
    \def\reftextfacebefore{p\aa{} \reftextvario{motst\aa{}ende}{forrige}
                           side}%
    \def\reftextafter     {p\aa{} \reftextvario{siden etter}%
                                               {neste side}}%
    \def\reftextbefore    {p\aa{} \reftextvario{siden foran}%
                                               {forrige side}}%
    \def\reftextcurrent   {p\aa{} denne siden}%
    \def\reftextfaraway#1{p\aa{} side~\pageref{#1}}%
  }}
\DeclareOption{nynorsk}
  {\vref@addto\extrasnynorsk{%
    \def\reftextfaceafter {p\aa{} den \reftextvario{motst\aa{}ande}%
                                  {neste} sida}%
    \def\reftextfacebefore{p\aa{} den \reftextvario{motst\aa{}ande}%
                                  {f\o{}rre} sida}%
    \def\reftextafter     {p\aa{} \reftextvario{sida etter}%
                                               {den neste sida}}%
    \def\reftextbefore    {p\aa{} \reftextvario{sida f\o{}r}%
                                            {den f\o{}rre sida}}%
    \def\reftextcurrent   {p\aa{} denne sida}%
    \def\reftextfaraway#1{p\aa{} side~\pageref{#1}}%
  }}
\DeclareOption{polish}
  {\vref@excuse{polish}%
   \vref@addto\extraspolish{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{portuges}
  {\vref@excuse{portuges}%
   \vref@addto\extrasportuges{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{romanian}
  {\vref@excuse{romanian}%
   \vref@addto\extrasromanian{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{russian}
  {\vref@excuse{russian}%
   \vref@addto\extrasrussian{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{slovak}
  {\vref@excuse{slovak}%
   \vref@addto\extrasslovak{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{slovene}
  {\vref@excuse{slovene}%
   \vref@addto\extrasslovene{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{spanish}
  {\vref@addto\extrasspanish{%
    \def\reftextfaceafter {en la p\'agina siguiente}%
    \def\reftextfacebefore{en la p\'agina anterior}%
    \let\reftextafter     \reftextfaceafter
    \let\reftextbefore    \reftextfacebefore
    \def\reftextcurrent   {en esta p\'agina}%
    \def\reftextfaraway#1{en la p\'agina~\pageref{#1}}%
  }}
\DeclareOption{swedish}
  {\vref@addto\extrasswedish{%
     \def\reftextfaceafter {p\aa\ \reftextvario{motst\aa ende}%
                                             {n\"{a}sta} sida}%
     \def\reftextfacebefore{p\aa\ \reftextvario{motst\aa ende}%
                                      {f\"{o}reg\aa ende} sida}%
     \def\reftextafter     {p\aa\ \reftextvario{f\"{o}ljande}%
                                            {n\"{a}sta} sida}%
     \def\reftextbefore    {p\aa\ f\"{o}reg\aa ende sida}%
     \def\reftextcurrent   {p\aa\ denna sida}%
     \def\reftextfaraway#1{p\aa\ sidan~\pageref{#1}}%
  }}
\DeclareOption{turkish}
  {\vref@excuse{turkish}%
   \vref@addto\extrasturkish{%
    \def\reftextfaceafter {on the \reftextvario{facing}{next} page}%
    \def\reftextfacebefore{on the \reftextvario{facing}{preceding}
                           page}%
    \def\reftextafter     {on the \reftextvario{following}{next} page}%
    \def\reftextbefore    {on the \reftextvario{preceding page}{page
                           before}}%
    \def\reftextcurrent   {on \reftextvario{this}{the current} page}%
    \def\reftextfaraway#1{on page~\pageref{#1}}%
  }}
\DeclareOption{francais}{%
   \typeout{Please use `french' instead of `francais'}%
   \ExecuteOptions{french}}
\DeclareOption{germanb}{%
   \typeout{Please use `german' instead of `germanb'}%
   \ExecuteOptions{german}}
\ExecuteOptions{english}
\ProcessOptions*
\newcounter{vrcnt}
\DeclareRobustCommand\vpageref{\@ifnextchar[%
  \@vpageref{\@vpageref[\reftextcurrent]}%
}
\def\@vpageref[#1]{\@ifnextchar[%
  {\@@vpageref{#1}}{\@@vpageref{#1}[\unskip\space]}}
\def\@@vpageref#1[#2]#3{%
  \leavevmode\unskip
  \global\advance\c@vrcnt\@ne
  \@ifundefined{r@\the\c@vrcnt @vr}%
         {\@namedef{r@\the\c@vrcnt @vr}{{??}{??}}}{}%
  \edef\@tempa{\expandafter\expandafter\expandafter
                \@cdr\csname r@\the\c@vrcnt @vr\endcsname
                \@nil}%
  \@ifundefined{r@\the\c@vrcnt @xvr}%
         {\@namedef{r@\the\c@vrcnt @xvr}{{??}{??}}}{}%
  \edef\@tempb{\expandafter\expandafter\expandafter
                \@cdr\csname r@\the\c@vrcnt @xvr\endcsname
                \@nil}%
  {\let\@currentlabel\@empty
   \expandafter\label\expandafter{\the\c@vrcnt @xvr}}%
  \ifx\@tempa\@tempb\else
  \vref@err{\noexpand\vref at page boundary
            \@tempb-\@tempa\space (may loop)%
            }%
  \fi
  \@ifundefined{r@#3}{\@namedef{r@#3}{{??}{??}}}{}%
  \edef\@tempb{\expandafter\expandafter\expandafter
                \@cdr\csname r@#3\endcsname
                \@nil}%
  \space
  \ifx\@tempa\@tempb
    #1%
  \else
    #2%
    \is@pos@number\@tempb
       {%
        \is@pos@number\@tempa
         {\@tempcnta\@tempa
          \advance\@tempcnta\@ne
         }%
         {\@tempcnta\maxdimen}%
        \ifnum \@tempb =\@tempcnta
         \ifodd\@tempcnta
           \if@twoside
             \reftextfaceafter
           \else
             \reftextafter
           \fi
         \else
           \reftextafter
         \fi
        \else
          \advance\@tempcnta-2
          \ifnum \@tempb =\@tempcnta
            \ifodd\@tempcnta
              \reftextbefore
            \else
              \if@twoside
                \reftextfacebefore
              \else
                \reftextbefore
              \fi
            \fi
          \else
            \reftextfaraway{#3}%
          \fi
        \fi
       }%
       {\reftextfaraway{#3}}%
  \fi
  {\let\@currentlabel\@empty
   \expandafter\label\expandafter{\the\c@vrcnt @vr}}%
}
\def\vrefwarning{\def\vref@err{\PackageWarning{varioref}}}
\def\vref@err#1{\PackageError{varioref}{#1}%
    {Please check the pages in question. You might need to replace
     the \string\vref\MessageBreak
     or \noexpand\vpageref by a normal \noexpand\(page)ref to
     stop LaTeX running forever.}}
\DeclareRobustCommand\vref[1]{%
  \unskip~\ref{#1}%
  \@vpageref[\unskip]{#1}%
}
\def\is@pos@number#1{\is@pos@num0#1\space\@nil}
\def\is@pos@num{\afterassignment\is@pos@num@ \count@}
\def\is@pos@num@#1\@nil{%
  \if0#10%
    \expandafter\@firstoftwo \else
    \expandafter\@secondoftwo  \fi}
\def\reftextvario#1#2{\ifodd\c@vrcnt #1\else#2\fi}
\def\fullref#1{\ref{#1} \reftextfaraway{#1}}
\endinput
%%
%% End of file `varioref.sty'.

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