From 09386405a3f7b1064ac18e3b15094fd0104fe562 Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Wed, 13 Sep 2017 22:07:57 +0000
Subject: robustindex (14sep17)

git-svn-id: svn://tug.org/texlive/trunk@45294 c570f23f-e606-0410-a88d-b1316a301751
---
 .../tex/latex/robustindex/robustindex.sty          | 122 +++++++++++++++++++--
 1 file changed, 115 insertions(+), 7 deletions(-)

(limited to 'Master/texmf-dist/tex')

diff --git a/Master/texmf-dist/tex/latex/robustindex/robustindex.sty b/Master/texmf-dist/tex/latex/robustindex/robustindex.sty
index a57ba7e87f1..4aff4fb1cbc 100644
--- a/Master/texmf-dist/tex/latex/robustindex/robustindex.sty
+++ b/Master/texmf-dist/tex/latex/robustindex/robustindex.sty
@@ -16,7 +16,7 @@
 % Alternatively, you may go against the advice of hyperref and put our
 % package later.
 %
-% We tested a little with
+% We tested with
 %
 % \usepackage[plainpages=false,hyperindex=false]{hyperref}
 %
@@ -30,6 +30,22 @@
 % adding the \usepackage{robustindex} to the preamble. Do not exclude any
 % relevant files, as in \includeonly.
 %
+% The option multind provides support for several indexes with pagerefs,
+% albeit with a simple layout. There is just one index file,
+% and the usual compilation cycle (latex, makeindex, latex) suffices.
+% With the command \setindex in the LaTeX file one arranges which index is
+% the active one at any given moment. 
+% This steers the behaviour of \index and \printindex.
+%
+% That is the positive part.
+% 
+% While robustindex.sty broke the automatic page range feature of 
+% makeindex, the multind option also breaks the insertions 
+% of \indexspace in the index file.
+% This makes that the layout of an index gets more plain.
+% The various hacks make the index file pretty unreadable
+% and style files of makeindex will probably fail.
+%
 % Remark.
 % The package imakeidx also synchronises the index with the manuscript,
 % but it has a different method and different requirements.
@@ -46,19 +62,28 @@
 % version 1999/12/01 or later.
 
 \ProvidesPackage{robustindex}
-  [2017/08/31
+  [2017/09/12
   index entries with pagerefs]
 
+\DeclareOption{multind}{
+  \AtBeginDocument{\setindex{main}}%
+  \def\robust@mult{\relax}
+}%
+
+\ProcessOptions\relax
+
 \newcounter{indexctr}%
 
 \newcounter{maxindctr}% Used to check if number of \index commands has changed.
 
 \newcommand{\indstring}{ind.}%
 
+
 \def\@wrindex#1{%
+\@bsphack
   \stepcounter{indexctr}%
   \stepcounter{indexctr}% second time, to emulate makeindex -r.
-  \@bsphack \protected@write \@auxout {}{%
+  \protected@write \@auxout {}{%
      \string \newlabel {\indstring\theindexctr}{{\relax }{\thepage }%
      \ifx\ifHy@bookmarks\undefined\else{\relax }{page.\thepage }{}\fi%
      }%
@@ -68,9 +93,34 @@
     \@indexfile {}{\string \indexentry
     {\findencap#1|\relax }{\theindexctr}}% \findencap will check for the
   \endgroup                              % encap symbol | in the argument.
-  \@esphack
+\@esphack
 }%
 
+\def\@multwrindex#1{%
+\@bsphack 
+\stepcounter{indexctr}%
+\stepcounter{indexctr}% second time, to emulate makeindex -r.
+\protected@write \@auxout {}{%
+     \string \newlabel {\indstring\theindexctr}{{\relax }{\thepage }%
+     \ifx\ifHy@bookmarks\undefined\else{\relax }{page.\thepage }{}\fi%
+     }%
+  }%
+  \@esphack
+  \protected@write
+    \@indexfile {}{\string \indexentry
+    {\string\indnr\robustchoice bs\findencap#1|\relax }{\theindexctr}}%
+  \endgroup
+\@esphack
+}
+
+\ifx\robust@mult\undefined\else\let\@wrindex\@multwrindex\fi
+
+\newcommand\sindex{\@ifnextchar[{\@sindex}{\@@sindex}}%
+
+\def\@sindex[#1]{\setindex{#1}\index}
+
+\def\@@sindex{\setindex{main}\index}
+
 \newif\ifinside@range% output must be supressed inside page range.
 \inside@rangefalse
 
@@ -127,9 +177,14 @@
 	    use option hyperindex=false. Detected%
 	 }%
       \else
-         \PackageWarning{robustindex}{%
+        \ifx\robust@mult\undefined
+           \PackageWarning{robustindex}{%
             Index not up to date, run makeindex. Detected%
-         }%
+           }\else
+           \PackageWarning{robustindex}{%
+            Print each index or run makeindex. Detected%
+           }%
+        \fi
       \fi
    \fi
 }%
@@ -226,4 +281,57 @@
    \ignorespaces
 }%
 
-\relax
+% Now the part that supports multiple indices. We hack the sorting mechanism of
+% Makeindex and put instructions for the mouth of TeX in the index file.
+
+\newcommand{\setindex}[1]{%
+\@bsphack
+\expandafter\ifx\csname#1ind\endcsname\relax 
+  \newindex{#1}%
+\else
+  \edef\robustchoice{\csname#1ind\endcsname}%
+\fi
+\@esphack}%
+
+
+
+\newcounter{multindctr}
+\newcommand{\robustcutpoint}{\relax}%
+\newcommand{\untilrobustcutpoint}{\relax}%
+\newcommand{\newindex}{\relax}%
+\newcommand{\robustchoice}{\relax}%
+\newcommand{\indnr}{\relax}
+
+\setcounter{multindctr}{999}
+
+\long\def\untilrobustcutpoint#1\robustcutpoint{\fi}% 
+% This tels the mouth of TeX not to send too much to the stomach.
+% It should only forward the part that belongs to the active index.
+
+\def\indnr#1s{\@bsphack\@esphack}%
+% The \indnr#1s part is not for output, but for Makeindex sorting, separating the
+% different indexes.
+
+\newcommand{\gobbletillnine}{\relax}
+
+\def\gobbletillnine#1 9{\relax}
+
+\def\newindex#1{\@bsphack\ifnum\c@multindctr=999%
+  \protected@write
+    \@indexfile {}{\string \indexentry
+    {\string\indnr 999bs @\string\robustcutpoint\string\gobbletillnine}{9}}%                              
+  \@esphack
+\fi
+\addtocounter{multindctr}{-1}%
+\expandafter\edef\csname#1ind\endcsname{\the\c@multindctr}%
+\edef\robustchoice{\csname#1ind\endcsname}%
+\@esphack  \protected@write
+    \@indexfile {}{\string \indexentry
+    {\string\indnr\the\c@multindctr as @\string\robustcutpoint 
+\string\ifnum \string\robustchoice=\the\c@multindctr\string\relax
+\string\else \string\untilrobustcutpoint\string\fi\string\gobbletillnine
+}{9}}%   
+\@esphack
+}%
+
+\endinput
\ No newline at end of file
-- 
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