path: root/Master/texmf-dist/doc/latex/testidx/testidx-manual.tex

\documentclass[widecs]{nlctdoc}

\usepackage[marginpar=1in]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\usepackage{metalogo}
\usepackage{cmap}
\usepackage{upquote}
\usepackage{testidx}
\usepackage[colorlinks,
            bookmarks,
            hyperindex=false,
            pdfauthor={Nicola L.C. Talbot},
            pdftitle={testidx.sty: dummy text for testing indexes},
            pdfkeywords={LaTeX,package,dummy text}]{hyperref}


\IndexPrologue{\section*{\indexname}
 \addcontentsline{toc}{section}{\indexname}%
 \markboth{\indexname}{\indexname}}

\setcounter{IndexColumns}{2}

\renewcommand*{\main}[1]{\hyperpage{#1}}
\renewcommand*{\usage}[1]{\hyperpage{#1}}

\begin{document}

 \title{testidx.sty v1.1: 
dummy text for testing indexes}
 \author{Nicola L.C. Talbot\\[10pt]
\url{http://www.dickimaw-books.com/}}

 \date{2017-08-11}
 \maketitle
 \tableofcontents

 \section{Introduction}
 \label{sec:intro}

The \styfmt{testidx} package is for testing indexes (\cs{index},
\env{theindex} and indexing applications, such as \app{makeindex}
and \app{xindy}).
As with packages like \sty{lipsum} and \sty{blindtext}, this package
provides dummy text, but it's interspersed with \cs{index} commands.
The filler text is mostly English not lorum ipsum, as this makes it
slightly easier to check the words in the index against the words in
the document. (For those who don't understand English, it's at least
no worse than lorum ipsum.) There are some terms (words, phrases or proper
nouns) that include extended Latin characters or digraphs to allow
for testing with a variety of Latin alphabets. The dummy text is
designed to cause problems that can occur in real documents to help 
test your chosen indexing application or index style. The main
issues this package tries to replicate are:
\begin{itemize}
\item Multiple encaps. For example, the word \qt{paragraph} is
indexed within the same block using no encap and each of the three
test encap values. This causes the \app{makeindex} warning
\qt{Conflicting entries: multiple encaps for the same page under
same key.}

\item An explicit range formation conflicting with a mid-range encap. 
The word \qt{range} has an explicit range formation (starting in
block~4 and ending in block~9), but \qt{range} is also indexed in
block~5 with one of the test encap values. This causes the
\app{makeindex} warning \qt{Inconsistent page encapsulator \ldots\
within range.}

\item Page breaking mishaps. This is largely dependent on the font
size and page geometry, but the dummy text contains some long
paragraphs and has enough entries to result in at least some awkward
page breaks. These may include a page or column break between an
index group heading and the first entry in that group or between an
index item and the first sub-item following it. Also check for
indexing that occurs in paragraphs that span page breaks to ensure
the location number is correct.

\item Untidy page lists. This again depends on the font size and
page geometry, but some entries are sporadically indexed throughout
the dummy text, which can lead to a long list that can't be formed
into a neat range.

\item Mid-list cross-referencing. The word \qt{lyuk} is indexed 
and then cross-referenced in block~3, and indexed again in block~7.
This can result in the rather odd occurrence of a cross-reference
appearing in the middle of the location list for that entry, depending on the
indexing method.

\item Collation-level homographs. (Same spelling except for
accents.) The words \qt{resume}
and \qt{r\'esum\'e} are both indexed. These should be treated as
separate entries in the index, even if the comparator considers
them identical. Different indexing methods may
produce different ordering or may even merge the two words, so check
they are both present.

\item Compound entries. The index contains a mixture of
single words, compound words, names, titles and phrases. The ordering may vary 
depending on the sorting method. For example, check the ordering 
of \qt{sea}, \qt{sea lion}, \qt{seaborne} and \qt{seal}, and 
also the words starting with \qt{vice}, such as \qt{vice admiral},
\qt{viceroy} and \qt{vice-president}.

\item Long entries can cause awkward line breaks and justification 
in a multicolumn index with narrow columns.

\item Interference caused by whatsits. Block~8 has a whatsit caused
by the indexing that interferes with limits of a summation in an
equation.

\item Symbols and numbers that don't have a natural word order.
The numbers may or may not be ordered numerically, depending on the
indexing method.
\end{itemize}
In addition, words containing extended Latin characters, digraphs and a
trigraph are indexed to help test various Latin alphabets, such as
Swedish, Icelandic, Welsh, Dutch, Polish and Hungarian. These may or
may not be recognised by indexing applications.

Version 1.1 now comes with a supplementary package
\sty{testidx-glossaries} which provides a similar way of testing the
\sty{glossaries} or \sty{glossaries-extra} package.

Example document:
\begin{verbatim}
\documentclass{article}

\usepackage{makeidx}
\usepackage{testidx}

\makeindex

\begin{document}
\testidx
\printindex
\end{document}
\end{verbatim}

If the document is called, say, \texttt{myDoc.tex}, then
the PDF can be built using:
\begin{verbatim}
pdflatex myDoc
makeindex myDoc.idx
pdflatex myDoc
\end{verbatim}

\begin{important}
There will be warnings about multiple encaps. This is intentional
to test how the indexing applications deal with this problem.
\end{important}

If you want to use \app{xindy}, you'll need to define the 
attributes (encaps) used in the dummy text. For example:
\begin{verbatim}
\documentclass{article}

\usepackage{filecontents}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{makeidx}
\usepackage{testidx}

\begin{filecontents*}{\jobname.xdy}
; list of allowed attributes

(define-attributes ((
  "tstidxencapi"
  "tstidxencapii"
  "tstidxencapiii"
)))

; define format to use for locations

(markup-locref :open "\tstidxencapi{"
 :close "}"
 :attr "tstidxencapi")

(markup-locref :open "\tstidxencapii{"
 :close "}"
 :attr "tstidxencapii")

(markup-locref :open "\tstidxencapiii{"
 :close "}"
 :attr "tstidxencapiii")

(markup-locref-list :sep ", ")
(markup-range :sep "--")
\end{filecontents*}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}

If this document is called, say, \texttt{myDoc.tex} then the 
build process is:
\begin{verbatim}
pdflatex myDoc
xindy -L english -C utf8 -M myDoc.xdy -M texindy -t myDoc.ilg myDoc.idx
pdflatex myDoc
\end{verbatim}
You can substitute \texttt{english} for another language (for
example, \texttt{swedish} or \texttt{danish}) to test how the
extended Latin characters are sorted for a particular language.

\XeLaTeX\ can be used instead:
\begin{verbatim}
\documentclass{article}

\usepackage{filecontents}
\usepackage{fontspec}
\usepackage{makeidx}
\usepackage{testidx}

\begin{filecontents*}{\jobname.xdy}
; list of allowed attributes

(define-attributes ((
  "tstidxencapi"
  "tstidxencapii"
  "tstidxencapiii"
)))

; define format to use for locations

(markup-locref :open "\tstidxencapi{"
 :close "}"
 :attr "tstidxencapi")

(markup-locref :open "\tstidxencapii{"
 :close "}"
 :attr "tstidxencapii")

(markup-locref :open "\tstidxencapiii{"
 :close "}"
 :attr "tstidxencapiii")

(markup-locref-list :sep ",")
(markup-range :sep "--")
\end{filecontents*}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}

\end{verbatim}
The build process is now:
\begin{verbatim}
xelatex myDoc
xindy -L english -C utf8 -M myDoc.xdy -M texindy -t myDoc.ilg myDoc.idx
xelatex myDoc
\end{verbatim}
(Similarly for \LuaLaTeX.)

If you want to use \app{makeindex}'s \texttt{-g} option (German)
you can use the package option \pkgopt{german} or \pkgopt{ngerman},
which will change the \app{makeindex} quote character to 
\texttt{+} but remember you need to add this to a style file.
For example:
\begin{verbatim}
\documentclass{article}

\usepackage{filecontents}
\usepackage{makeidx}
\usepackage{ngerman}
\usepackage[german]{testidx}

\begin{filecontents*}{\jobname.ist}
quote '+'
\end{filecontents*}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}
This document can be built using:
\begin{verbatim}
pdflatex myDoc
makeindex -g -s myDoc.sty myDoc.idx
pdflatex myDoc
\end{verbatim}
(Note the different position of the \qt{Numbers} group
in the index.)

Alternatively:
\begin{verbatim}
\documentclass[ngerman]{article}

\usepackage{filecontents}
\usepackage{makeidx}
\usepackage{babel}
\usepackage{testidx}

\begin{filecontents*}{\jobname.ist}
quote '+'
\end{filecontents*}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}

The \styfmt{testidx-glossaries} package automatically loads
\styfmt{testidx} and will also load either \sty{glossaries} or
\sty{glossaries-extra}. For example:
\begin{verbatim}
\documentclass{report}

\usepackage[T1]{fontenc}
\usepackage{testidx-glossaries}

\renewcommand*{\glstreenamefmt}[1]{#1}

\tstidxmakegloss

\begin{document}

\testidx

\tstidxprintglossaries

\end{document}
\end{verbatim}
This automatically sets the \texttt{mcolsindexgroup} glossary style
to mimic the style commonly used with indexes.
This document can be built using:
\begin{verbatim}
pdflatex myDoc
makeglossaries myDoc
pdflatex myDoc
\end{verbatim}
Note that the \texttt{mcolsindexgroup} style sets the \texttt{name}
field in \cs{glstreenamefmt}, which defaults to bold. This has been
redefined in the above example to simply do its argument.

\section{Package Options}
\label{sec:pkgopt}

\subsection{\texorpdfstring{\styfmt{testidx}}{testidx} options}
\label{sec:testidxpkgopt}

The following package options are provided:
\begin{description}
\item[\pkgopt{german} or \pkgopt{ngerman}]
This redefines the indexing \qt{quote} character to use \texttt{+}
instead of the double-quote character. Remember to add this
to your style file and call \app{makeindex} with the
\texttt{-g} (German) switch. (See example above in 
the previous section.) This option may also be implemented
using
\begin{definition}[\DescribeMacro\testidxGermanOn]
\cs{testidxGermanOn}
\end{definition}

\item[\pkgopt{nogerman}]
Counteract the effect of the previous option.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxGermanOff]
\cs{testidxGermanOff}
\end{definition}

\item[\pkgopt{stripaccents}]
Strips accent commands from the sort key when using the
ASCII option (see \sectionref{sec:exlatin}).
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxStripAccents]
\cs{testidxStripAccents}
\end{definition}
Note that the \pkgopt{german} or \pkgopt{ngerman} package option
won't strip the umlaut accent when used with this option.

\item[\pkgopt{nostripaccents}]
Doesn't strip accent commands from the sort key when using the
ASCII option (see \sectionref{sec:exlatin}).
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxNoStripAccents]
\cs{testidxNoStripAccents}
\end{definition}

\item[\pkgopt{sanitize}]
Sanitize the terms before indexing them when using
the UTF-8 option to prevent the UTF-8 characters from being
expanded to \sty{inputenc}'s internal macros such as \cs{IeC}.
This option is the default unless \XeLaTeX\ or \LuaLaTeX\ 
are in use.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxSanitizeOn]
\cs{testidxSanitizeOn}
\end{definition}

\item[\pkgopt{nosanitize}]
Don't sanitize the terms before indexing them when using
the UTF-8 option.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxSanitizeOff]
\cs{testidxSanitizeOff}
\end{definition}

\item[\pkgopt{showmarks}]
(Default.) Show the location of the \cs{index} commands
in the dummy text with markers.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxshowmarkstrue]
\cs{testidxshowmarkstrue}
\end{definition}

\item[\pkgopt{hidemarks} or \pkgopt{noshowmarks}]
Hide the markers.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxshowmarksfalse]
\cs{testidxshowmarksfalse}
\end{definition}

\item[\pkgopt{verbose}]
Show the actual indexing commands within the dummy text.
This will most likely cause a high number of overfull lines.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxverbosetrue]
\cs{testidxverbosetrue}
\end{definition}

\item[\pkgopt{noverbose}]
(Default.) Cancel the \pkgopt{verbose} option.
This option may also be implemented using
\begin{definition}[\DescribeMacro\testidxverbosefalse]
\cs{testidxverbosefalse}
\end{definition}

\item[\pkgopt{notestencaps}]
Suppress the testing of the encaps. Note that this only affects
the commands used within \ics{testidx}, which have an optional
argument to specify the encap. Some of these commands have the
default value of the optional argument set to one of the test
encaps. This option changes the command definition so that the
optional argument is blank. Therefore this setting can only
be used as a package option. However, this doesn't prevent
you from explicitly testing an encap either directly using
\ics{index} (e.g.\ \verb"\index{word|emph}") or implicitly
using one of the helper commands described in the documented
code (e.g.\ \verb"\tstidxsty[emph]{testidx}").

\item[\pkgopt{testencaps}]
(Default.) Cancels the \pkgopt{notestencaps} option. 
This option ensures that \ics{testidx} uses the three test 
encaps.

\item[\pkgopt{prefix}]
(Default.) Inserts a prefix in the sort value for certain (symbol) entries to
keep them together in the index. These entries represent markers
(prefixed with \ics{tstidxindexmarkerprefix}) and maths symbols (prefixed with
\ics{tstidxmathsymprefix}).

\item[\pkgopt{noprefix}]
Doesn't insert a prefix for the markers and maths symbol entries.
This option doesn't alter the entries starting with a
hyphen (such as \texttt{-l}) which always have that prefix
since it's part of the display name.

\item[\pkgopt{diglyphs}]
Words with \tstidxqt{ll}, \tstidxqt{ij} and \tstidxqt{dz} digraphs
will have the two characters forming the digraph replaced with a
single UTF-8 glyph. This option only works if UTF-8 is supported
\emph{and the document font recognises the glyphs}. (The trigraph 
\tstidxqt{dzw} and other digraphs,
such as \tstidxqt{th} aren't affected by this option.)

\item[\pkgopt{nodiglyphs}]
(Default.) Don't use single glyphs for the \tstidxqt{ll},
\tstidxqt{ij} and \tstidxqt{dz} digraphs. (This option doesn't
affect other glyphs, such as \ae\ or \th, that are more commonly
used in some languages.)
\end{description}

\subsection{\texorpdfstring{\styfmt{testidx-glossaries}}{testidx-glossaries}
 options}
\label{sec:testidxglospkgopt}

Most of the package options provided by \styfmt{testidx} can also be
used with \styfmt{testidx-glossaries}. The \pkgopt{verbose} option
has a slightly different effect. With \styfmt{testidx}, that option
shows the indexing command within the text. However, the
\sty{glossaries} package requires entries to first be defined and
doesn't use \cs{index} but uses its own internal custom commands
that depend on the indexing method, so for
\styfmt{testidx-glossaries}, the \pkgopt{verbose} option instead
writes information in the transcript file (\texttt{.log}) when the
dummy entries are defined. For example:
\begin{verbatim}
Package testidx-glossaries Info: new term label={packages},
(testidx-glossaries)             name={packages},
(testidx-glossaries)             text={packages},
(testidx-glossaries)             parent={},
(testidx-glossaries)             see={}
(testidx-glossaries)              on input line 1.
\end{verbatim}
When used with the \pkgopt{tex} option, the \pkgopt{verbose}
option will additionally write information while \TeX\ is
sorting, since this can take a while and may give the appearance
that the build process has hung.

When used with the \pkgopt{bib2gls} option, the \pkgopt{verbose}
option will show the syntax used by \ics{tstidxmakegloss} 
to load each resource. If you search the \texttt{.log} file for 
instances of \ics{GlsXtrLoadResource}, you'll find the commands
needed to replicate the behaviour of \cs{tstidxmakegloss}.

In addition to the options listed above, the following options are
also available for \styfmt{testidx-glossaries}:
\begin{description}
\item[\pkgopt{extra}]
Load the \sty{glossaries-extra} package.

\item[\pkgopt{noextra}]
Don't load the \sty{glossaries-extra} package. Just load the
base \sty{glossaries} package. (Default.)

\item[\pkgopt{makeindex}]
(Default.) Passes the \pkgopt{makeindex} option to
\sty{glossaries}. This option also sets up \ics{tstidxmakegloss} 
to use \ics{makeglossaries}, \ics{tstidxprintglossaries} to use
\ics{printglossaries} and \ics{tstidxprintglossary} to use
\ics{printglossary}. Use \app{makeglossaries} (or
\app{makeglossaries-lite}) in the build process.

\item[\pkgopt{xindy}] Passes the \pkgopt{xindy} option to
\sty{glossaries}. This option also sets up \ics{tstidxmakegloss} 
to use \ics{makeglossaries}, \ics{tstidxprintglossaries} to use
\ics{printglossaries} and \ics{tstidxprintglossary} to use
\ics{printglossary}. Use \app{makeglossaries} (or
\app{makeglossaries-lite}) in the build process.

\item[\pkgopt{tex}] This option also sets up \ics{tstidxmakegloss} 
to use \ics{makenoidxglossaries}, \ics{tstidxprintglossaries} to use
\ics{printnoidxglossaries} and \ics{tstidxprintglossary} to use
\ics{printnoidxglossary}. (\TeX\ is used for to sort and collate the
entries. Don't use \app{makeglossaries} or \app{makeglossaries-lite}
in the build process.)

\item[\pkgopt{bib2gls}] Passes the \pkgopt{record} option to
\sty{glossaries-extra}. (This option automatically implements the 
\pkgopt{extra} option.) This option also sets up
\ics{tstidxmakegloss} to use \ics{GlsXtrLoadResources}, 
\ics{tstidxprintglossaries} to use
\ics{printunsrtglossaries} and \ics{tstidxprintglossary} to use
\ics{printunsrtglossary}. Use \app{bib2gls} in the build process.
Note that this option ignores the commands 
\ics{tstidxindexmarkerprefix} and \ics{tstidxmathsymprefix}.

\item[\pkgopt{manual}] Indicates that the test document
doesn't use \cs{tstidxmakegloss}. (This disables the check
that ensures that command has been used.) Use this option if you
want to customize the glossary set-up. This option may be used in
addition to the above options, but it will disable
\cs{tstidxmakegloss}, \cs{tstidxprintglossary} and
\cs{tstidxprintglossaries}.

The sample files can be loaded using
\begin{definition}[\DescribeMacro\tstidxloadsamples]
\cs{tstidxloadsamples}
\end{definition}
(which \cs{tstidxmakegloss} does implicitly) except in the case of
\pkgopt{bib2gls} where the sample files need to be loaded in
\cs{GlsXtrLoadResource}.

\item[\pkgopt{seekey}]
(Default.)
Use the \texttt{see} key for cross-references instead of using \ics{glssee}.
If the \texttt{seealso} key has been defined (\sty{glossaries-extra}
v1.16+), then this will be used for the \qt{see also}
cross-references (otherwise \verb|see=[\seealsoname]|\marg{label}
will be used).

\item[\pkgopt{noseekey}]
Use \ics{glssee} for cross-references and don't set the \texttt{see}
(or \texttt{seealso}) key.

\item[\pkgopt{noglsnumbers}] Passes the \pkgopt{glsnumbers=false} option to
\sty{glossaries}.

\item[\pkgopt{glsnumbers}] Passes the \pkgopt{glsnumbers=true} option to
\sty{glossaries}. (This is the default for the \sty{glossaries}
package.)

\item[\pkgopt{desc}] Provide descriptions for the dummy entries.
This setting automatically implements the \sty{glossaries}
package's \pkgopt{nopostdot=false} option and sets the
\texttt{indexgroup} glossary style.

\item[\pkgopt{nodesc}]
(Default.) Don't provide descriptions for the dummy entries.
(The \texttt{description} field is set to empty.)
This setting automatically implements the \sty{glossaries}
package's \pkgopt{nopostdot} option and sets the
\texttt{mcolindexgroup} glossary style. (The \sty{glossary-mcols} package
is automatically loaded.)
\end{description}

Both the \texttt{mcolindexgroup} and \texttt{indexgroup} styles set
the \texttt{name} field in \ics{glstreenamefmt}, which by default
uses \cs{textbf}. This can be redefined as appropriate.
You can switch to a different glossary style using
\cs{setglossarystyle}\marg{style-name}.

\section{Basic Commands}
\label{sec:basic}

This section only covers the basic commands provided by 
\styfmt{testidx} and \styfmt{testidx-glossaries}. 
For more advanced commands, see the documented code.

\begin{definition}[\DescribeMacro\testidx]
\cs{testidx}\oarg{blocks}
\end{definition}
This is the principle command provided by the \sty{testidx} package. It
generates the predefined dummy text that's interspersed 
with indexing commands. (The text varies slightly according to the
document settings.) There are \number\tstidxmaxblocks\ 
blocks in total. This number can be accessed through the register:
\begin{definition}[\DescribeMacro\tstidxmaxblocks]
\cs{tstidxmaxblocks}
\end{definition}

If the optional argument \oarg{blocks} is omitted, all the blocks
will be used. Each block starts with a number identifying it.
This number prefix is formatted using:
\begin{definition}[\DescribeMacro\tstidxprefixblock]
\cs{tstidxprefixblock}\marg{n}
\end{definition}
where \meta{n} is the block number. If you want to suppress the
number prefix, just redefine this command to ignore its argument.

By default, the blocks are separated by a paragraph break.
If the starred form is used, the blocks are separated by a~space.
Note that some of the blocks contain paragraph breaks for
displayed material. The starred form won't eliminate
paragraph breaks \emph{within} the blocks, just those
used as separators between the blocks.

If you use \sty{testidx-glossaries}, you additionally need
\begin{definition}[\DescribeMacro\tstidxmakegloss]
\cs{tstidxmakegloss}\oarg{options}
\end{definition}
in the preamble. This loads the files that provide the dummy entries
and uses \cs{makeglossaries} or \cs{makenoidxglossaries} or
\cs{GlsXtrLoadResources} depending on the package options. The
optional argument \meta{options} is appended to the optional argument of
\cs{GlsXtrLoadResources} if the \pkgopt{bib2gls} package option has
been used, otherwise \meta{options} is ignored.

To display the glossary, either use
\begin{definition}[\DescribeMacro\tstidxprintglossaries]
\cs{tstidxprintglossaries}
\end{definition}
or
\begin{definition}[\DescribeMacro\tstidxprintglossary]
\cs{tstidxprintglossary}\marg{options}
\end{definition}
where you want the glossary to be displayed. This will use the
appropriate command according to the package set up.

The intention of the dummy text is to provide an index that should
typically span at least three pages for A4 or letter paper, to allow
testing of headers and footers across a double-paged spread and to
test the effects of page breaking. Some of the indexing commands intentionally
cause warnings from \app{makeindex} to test for certain situations.
Phrases are indexed as well as just individual words to increase the
chances of indexed terms spanning a page break. However, the page
dimensions, fonts and other material in the document will obviously
alter where the page breaks occur.

You can display only a subset of the blocks using the optional
argument, which may be a comma-separated list of block identifiers
or hyphen-separated range. Note that some of the blocks contain the
start or end of an indexing range. If you only display a subset
of the blocks that contains any of these, you need to make
sure that you include the blocks that contain matching open
and closing ranges (unless you're testing for mis-matched ranges).

The optional argument may be a mixture of individual block
identifiers and ranges. Examples:
\begin{enumerate}
\item Just display block~6:
\begin{verbatim}
\testidx[6]
\end{verbatim}
\item Display blocks~4 to 6:
\begin{verbatim}
\testidx[4-6]
\end{verbatim}
\item Display blocks~1, 4 to 6, and the last block:
\begin{verbatim}
\testidx[1,4-6,\tstidxmaxblocks]
\end{verbatim}
\item Intersperse the blocks with sections:
\begin{verbatim}
\section{Sample}
\testidx[1-6]
\section{Another Sample}
\testidx[7-\tstidxmaxblocks]
\end{verbatim}
\end{enumerate}

If for some bizarre and wacky reason you want the blocks
in the reverse order, you can do so. For example:
\begin{verbatim}
\testidx[\tstidxmaxblocks-1]
\end{verbatim}
However the open and close range formations are likely to
confuse \app{makeindex}\slash\app{xindy}, but perhaps that's
your intention. Just remember to stay within the range
1--\cs{tstidxmaxblocks} as you'll get an error if you
go out of those bounds.

With just \sty{testidx}, the actual indexing is performed using:
\begin{definition}[\DescribeMacro\tstindex]
\cs{tstindex}\marg{text}
\end{definition}
This defaults to just \cs{index}\marg{text} but may be redefined. For
example, if you are testing multiple indexes, you can
redefine \cs{tstindex} to use a specific index.

With \sty{testidx-glossaries}, the above command isn't used.
Instead \cs{gls}, \cs{glspl}, \cs{glsadd} or \cs{glssee} will be
used depending on the context.

The dummy text includes markers to identify where the instances
of \cs{tstindex} have been used. To reduce the possibility of
package conflict, \styfmt{testidx} loads a bare minimum of
packages\footnote{only \sty{color}, \sty{ifxetex} and
\sty{ifluatex} are loaded}
and tries to rely as much as possible on \LaTeX\ kernel
commands, so the markers are fairly primitive. If you prefer
fancier markers, you can change them by redefining the
commands listed below. Multiple markers in the dummy text
indicate multiple instances of \cs{tstindex} without any
intervening text. (Naturally, \sty{testidx-glossaries} requires more
packages as it loads \sty{glossaries}, and possibly also
\sty{glossaries-extra}.)

\begin{definition}[\DescribeMacro\tstidxmarker]
\cs{tstidxmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a top-level entry that doesn't start or end a range.
Default: \tstidxmarker

\begin{definition}[\DescribeMacro\tstidxopenmarker]
\cs{tstidxopenmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a top-level entry that starts a range.
Default: \tstidxopenmarker

\begin{definition}[\DescribeMacro\tstidxclosemarker]
\cs{tstidxclosemarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a top-level entry that ends a range.
Default: \tstidxclosemarker

\begin{definition}[\DescribeMacro\tstidxsubmarker]
\cs{tstidxsubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-entry that doesn't start or end a range.
Default: \tstidxsubmarker

\begin{definition}[\DescribeMacro\tstidxopensubmarker]
\cs{tstidxopensubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-entry that starts a range.
Default: \tstidxopensubmarker

\begin{definition}[\DescribeMacro\tstidxclosesubmarker]
\cs{tstidxclosesubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-entry that ends a range.
Default: \tstidxclosesubmarker

\begin{definition}[\DescribeMacro\tstidxsubsubmarker]
\cs{tstidxsubsubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-sub-entry that doesn't start or end a range.
Default: \tstidxsubsubmarker

\begin{definition}[\DescribeMacro\tstidxopensubsubmarker]
\cs{tstidxopensubsubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-sub-entry that starts a range.
Default: \tstidxopensubsubmarker

\begin{definition}[\DescribeMacro\tstidxclosesubsubmarker]
\cs{tstidxclosesubsubmarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
for a sub-sub-entry that ends a range.
Default: \tstidxclosesubsubmarker

\begin{definition}[\DescribeMacro\tstidxseemarker]
\cs{tstidxseemarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
that uses a cross-reference. Additionally, the cross-referenced
information will appear in a marginal note.
Default: \tstidxseemarker

\begin{definition}[\DescribeMacro\tstidxsubseemarker]
\cs{tstidxsubseemarker}
\end{definition}
This is the marker used to show an instance of \cs{tstindex}
that uses a cross-reference in a sub-entry.
Default: \tstidxsubseemarker\ (the sub-level and cross-reference
markers superimposed, not to be confused with a sub-level marker
followed by a cross-reference marker, which indicates
consecutive occurrences of \cs{tstindex}).
As above the cross-reference information appears in a marginal 
note. The main term and the sub-entry term are separated with
the symbol given by
\begin{definition}[\DescribeMacro\tstidxsubseesep]
\cs{tstidxsubseesep}
\end{definition}
which defaults to \tstidxsubseesep

There are three encap values used:
\begin{definition}[\DescribeMacro\tstidxencapi]
\cs{tstidxencapi}\marg{location}
\end{definition}
\begin{definition}[\DescribeMacro\tstidxencapii]
\cs{tstidxencapii}\marg{location}
\end{definition}
\begin{definition}[\DescribeMacro\tstidxencapiii]
\cs{tstidxencapiii}\marg{location}
\end{definition}
By default these just set \meta{location} in a different
text colour.

If you are using \app{xindy}, you'll need to add these
to a \texttt{.xdy} file that can be loaded using \app{xindy}'s
\texttt{-M} switch. For example, with just \sty{testidx}, include the following
in your \texttt{.xdy} file:
\begin{verbatim}
; list of allowed attributes

(define-attributes ((
  "tstidxencapi"
  "tstidxencapii"
  "tstidxencapiii"
)))

; define format to use for locations

(markup-locref :open "\tstidxencapi{"
 :close "}"
 :attr "tstidxencapi")

(markup-locref :open "\tstidxencapii{"
 :close "}"
 :attr "tstidxencapii")

(markup-locref :open "\tstidxencapiii{"
 :close "}"
 :attr "tstidxencapiii")
\end{verbatim}
You may also want to add the list and range separators, if you
haven't already done so:
\begin{verbatim}
(markup-locref-list :sep ",")
(markup-range :sep "--")
\end{verbatim}
If you use \sty{testidx-glossaries}, the \sty{glossaries} package
provides commands to add information to the automatically generated 
\texttt{.xdy} file. For example:
\begin{verbatim}
\GlsAddXdyAttribute{tstidxencapi}
\GlsAddXdyAttribute{tstidxencapii}
\GlsAddXdyAttribute{tstidxencapiii}
\end{verbatim}
If you want to provide your own custom cross-reference class
you can use
\begin{definition}[\DescribeMacro\tstidxSetSeeEncap]
\cs{tstidxSetSeeEncap}\marg{encap name}
\end{definition}
to change the \texttt{see} encap to \meta{encap name} and
\begin{definition}[\DescribeMacro\tstidxSetSeeAlsoEncap]
\cs{tstidxSetSeeAlsoEncap}\marg{encap name}
\end{definition}
to change the \texttt{seealso} encap to \meta{encap name}.
For example:
\begin{verbatim}
\tstidxSetSeeAlsoEncap{uncheckedseealso}
\end{verbatim}
and in the \texttt{.xdy} file:
\begin{verbatim}
(define-crossref-class "uncheckedseealso" :unverified)
(markup-crossref-list :class "uncheckedseealso"
   :open "\seealso" :close "{}")
\end{verbatim}
which creates an unverified alternative to \texttt{seealso}.

The \cs{tstindex} command is sometimes placed before the term
or phrase being indexed and sometimes afterwards. To clarify
what's being indexed, the adjacent word or phrase is surrounded
by
\begin{definition}[\DescribeMacro\tstidxtext]
\cs{tstidxtext}\marg{text}
\end{definition}
This defaults to using a dark grey text colour. If an
encap has been used, the corresponding encap command (see
above) is included within the argument of \cs{tstidxtext}:
\begin{definition}
\cs{tstidxtext}\{\meta{cs}\marg{text}\}
\end{definition}
where \meta{cs} is the encap command. This means that with
the default definitions, the dark grey text colour will
only be visible when there's no encap, as the encap command
will override the colour change.

Note that the marker is included within \meta{text}.
Some of the examples have consecutive uses of
\cs{tstindex}, such as a top-level entry followed
by a sub-entry. For example, a person's name is indexed twice:
\begin{verbatim}
Donald Knuth\index{Knuth, Donald}\index{people!Knuth, Donald}
\end{verbatim}
(It's actually done using \verb|\tstidxperson{Donald}{Knuth}|
for better consistency. These markup commands typically
won't need changing, but if they do, see the documented code
for further detail.)

In the case of \sty{testidx-glossaries}, the above example would be
\begin{verbatim}
\gls{DonaldKnuth}\glsadd{people.DonaldKnuth}
\end{verbatim}
(\cs{index} isn't used).

Example (using just \sty{testidx}):
\begin{verbatim}
\renewcommand*{\tstindex}[1]{}
\textsf{\testidx[1,\tstidxmaxblocks]}
\end{verbatim}
This produces the two paragraphs (first and last blocks) shown below:

\medskip\par
\renewcommand*{\tstindex}[1]{}
\textsf{\testidx[1,\tstidxmaxblocks]}
\par\medskip

Note that I've redefined \cs{tstindex} to ignore its argument
in this document so those terms won't actually be indexed 
in this case. The block references (such as \qt{block~1})
in the dummy text don't use the standard 
\cs{label}\slash\cs{ref} mechanism as the references must still 
work even if the referenced block has been omitted. This
means they won't have hyperlinks even if you include the
\sty{hyperref} package as the target may not be defined.
They are provided primarily so you can easily find out which
blocks need adding if you're only using a subset and need to
close a range.

\section{Indexing Special Characters}
\label{sec:idxspchars}

If you need to change the indexing special characters, you
can redefine the commands listed in this section. Remember
that you will also need to make the relevant changes to your
indexing style file. (These commands only apply to \sty{testidx} not
\sty{testidx-glossaries}.)

\begin{definition}[\DescribeMacro\tstidxquote]
\cs{tstidxquote}
\end{definition}
The \qt{quote} character. The default is: \texttt{\tstidxquote}.
Note that the \pkgopt{german} or \pkgopt{ngerman} package option
will automatically redefine \cs{tstidxquote} to \texttt{+}
(plus).

\begin{definition}[\DescribeMacro\tstidxactual]
\cs{tstidxactual}
\end{definition}
The \qt{actual} character. The default is: \texttt{\tstidxactual}.

\begin{definition}[\DescribeMacro\tstidxlevel]
\cs{tstidxlevel}
\end{definition}
The \qt{level} character. The default is: \texttt{\tstidxlevel}.

\begin{definition}[\DescribeMacro\tstidxencap]
\cs{tstidxencap}
\end{definition}
The \qt{encap} character. The default is: \texttt{\tstidxencap}.

\begin{definition}[\DescribeMacro\tstidxopenrange]
\cs{tstidxopenrange}
\end{definition}
The \qt{open range} character. The default is:
\texttt{\tstidxopenrange}.

\begin{definition}[\DescribeMacro\tstidxcloserange]
\cs{tstidxcloserange}
\end{definition}
The \qt{close range} character. The default is:
\texttt{\tstidxcloserange}.

\section{Extended Latin Characters}
\label{sec:exlatin}

The dummy text includes words or phrases that have extended
Latin characters. There are two modes:

\begin{description}
\item[ASCII] This mode is on \emph{unless} you are using
\XeLaTeX\ or \LuaLaTeX, or the document has loaded 
\sty{inputenc} with the encoding set to \pkgopt{utf8}.

Example that will switch on ASCII mode:
\begin{verbatim}
\documentclass{article}

\usepackage[latin1]{inputenc}
\usepackage{makeidx}
\usepackage{testidx}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}

\item[UTF-8] This mode is on \emph{if} you are using
\XeLaTeX\ or \LuaLaTeX, or if the document has loaded 
\sty{inputenc} with the encoding set to \pkgopt{utf8}.

Example that will switch on UTF-8 mode:
\begin{verbatim}
\documentclass{article}

\usepackage{fontspec}
\usepackage{makeidx}
\usepackage{testidx}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}
Or
\begin{verbatim}
\documentclass{article}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{makeidx}
\usepackage{testidx}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}

If the UTF-8 mode is on, you can additionally use the
\pkgopt{diglyphs} package option to replace the 
\tstidxqt{ll}, \tstidxqt{ij} and \tstidxqt{dz} digraphs with 
a single glyph, but you'll need a font that supports
those glyphs. (The trigraph \tstidxqt{dzw} and other digraphs,
such as \tstidxqt{th} aren't affected by this option.) For example
\begin{verbatim}
\documentclass{article}

\usepackage{fontspec}
\setmainfont{Linux Libertine O}

\usepackage{makeidx}
\usepackage[diglyphs]{testidx}

\makeindex

\begin{document}
\testidx

\printindex
\end{document}
\end{verbatim}

\end{description}

When the ASCII mode is on, words or phrases with UTF-8
characters use the standard \LaTeX\ accent commands, such
as \cs{'} (acute accent) or \cs{o} (\o). There are two
package options that determine whether or not to include these
commands in the sort key: \pkgopt{stripaccents} will remove
the accent commands (except for the umlaut shortcut \verb|"|
if the \pkgopt{german} or \pkgopt{ngerman} package option has been
used), and \pkgopt{nostripaccents} will keep the accent commands
in the sort key.

For example, with the ASCII mode on with the \pkgopt{stripaccents}
option, \qt{Anders Jonas \AA ngstr\"om} is indexed as
\begin{verbatim}
Angstrom, Anders Jonas@\AA ngstr\""om, Anders Jonas
\end{verbatim}
unless the \pkgopt{german} or \pkgopt{ngerman} option is on,
in which case it's indexed as
\begin{verbatim}
Angstr"om, Anders Jonas@\AA ngstr"om, Anders Jonas
\end{verbatim}
Whereas with the \pkgopt{nostripaccents} option, this name is
indexed as
\begin{verbatim}
\r Angstr\""om, Anders Jonas@\AA ngstr\""om, Anders Jonas
\end{verbatim}
unless the \pkgopt{german} or \pkgopt{ngerman} option is
on, in which case it's indexed as
\begin{verbatim}
\r Angstr"om, Anders Jonas@\AA ngstr"om, Anders Jonas
\end{verbatim}

When the UTF-8 mode is on, UTF-8 characters are used instead.
For example, \qt{Anders Jonas \AA ngstr\"om} is indexed
as
\begin{flushleft}\ttfamily
\AA ngstr\"om, Anders Jonas
\end{flushleft}
(The \pkgopt{stripaccents} and \pkgopt{nostripaccents} options 
are ignored.)

\XeLaTeX\ and \LuaLaTeX\ both natively support UTF-8, so
when either of those engines are in use, the UTF-8 characters 
will be written to the indexing file as they are. So the above
example will appear in the \texttt{.idx} file as:
\begin{flushleft}\ttfamily
\cs{indexentry}\{\AA ngstr\"om, Anders Jonas\}\marg{location}
\end{flushleft}
Regular \LaTeX\ (\app{latex} or \app{pdflatex}) requires the 
\sty{inputenc} package to support
UTF-8 characters, but each UTF-8 character is treated as
two tokens (the first and second octets) where the first token is an
active character that takes the second token as the argument.
This means that expansion will occur when writing these
active characters to an external file. This means that the
above will appear in the \texttt{.idx} file as:
\begin{verbatim}
\indexentry{\IeC {\r A}ngstr\IeC {\"o}m, Anders Jonas}{3}
\end{verbatim}
(where 3 is the page number).

Since this can confuse the indexing application,
\styfmt{testidx} provides a \pkgopt{sanitize} package option
which will first sanitize the UTF-8 characters before
indexing them. This option is on by default for regular \LaTeX\ and
off for \XeLaTeX\ and \LuaLaTeX. You can switch it off
using the \pkgopt{nosanitize} package option.

Whether it should be on or off really depends on what you want
to test. For example, if you want to test how an indexing 
application deals with UTF-8 characters, then switch it on, but
if you want to test how your indexing command (whatever 
\cs{tstindex} is defined as) behaves with these characters, then 
switch it off.

Note that this \pkgopt{sanitize} option isn't adjusting the
definition of \cs{index} or \cs{tstindex}, but is essentially
pretending that the user is doing something like:
\begin{flushleft}\ttfamily\obeylines
\cs{makeatletter}
Anders Jonas \AA ngstr\"om\%
\cs{def}\cs{tmp}\{\AA ngstr\"om, Anders Jonas\}\%
\cs{@onelevel@sanitize}\cs{tmp}
\cs{exandafter}\cs{index}\cs{expandafter}\{\cs{tmp}\}\%
\cs{edef}\cs{tmp}\{people\cs{tstidxlevel}\cs{tmp}\}\%
\cs{exandafter}\cs{index}\cs{expandafter}\{\cs{tmp}\}\%
\end{flushleft}
instead of simulating:
\begin{flushleft}\ttfamily\obeylines
Anders Jonas \AA ngstr\"om\%
\cs{tstindex}\{\AA ngstr\"om, Anders Jonas\}\%
\cs{tstindex}\{people\tstidxlevel\AA ngstr\"om, Anders Jonas\}\%
\end{flushleft}

Note that the sanitization isn't applied to the entire argument
of \cs{tstindex}, but only selected parts of it.

\PrintIndex

\end{document}