总结

Question

我用来imakeidx创建跨越多页的长索引。如果（子）子条目扩展到新页面，我希望主条目（加上子条目）在页面顶部重复。因此，在接下来的 MWE 中，我希望第三页再次以“测试、测试、一、二、三、四”开头，然后是“二”挂在其下，然后才是其余的子条目。我该如何实现这一点？

梅威瑟：

\documentclass[10pt, paper=156mm:235mm, BCOR=12mm, headings=optiontotocandhead, headings=openany]{scrbook}

\usepackage[splitindex]{imakeidx}
\makeindex[options= -s index_style2.ist, intoc,name=A,title=\mbox{Appendix A},columns=1]

\makeatletter
\newcommand{\Dotfill}{\leavevmode \leaders \hb@xt@ 0.75em{\hss .\hss }\hfill \kern \z@}
\makeatother

\begin{document}
\frontmatter
\mainmatter
\chapter{The First Chapter} 
\index[A]{Testing, testing, one, two, three, four!1@One!A}\index[A]{Testing, testing, one, two, three, four!1@One!B}\index[A]{Testing, testing, one, two, three, four!1@One!C}\index[A]{Testing, testing, one, two, three, four!1@One!D}\index[A]{Testing, testing, one, two, three, four!1@One!E}\index[A]{Testing, testing, one, two, three, four!1@One!F}\index[A]{Testing, testing, one, two, three, four!1@One!G}\index[A]{Testing, testing, one, two, three, four!1@One!H}\index[A]{Testing, testing, one, two, three, four!1@One!I}\index[A]{Testing, testing, one, two, three, four!1@One!J}\index[A]{Testing, testing, one, two, three, four!1@One!K}\index[A]{Testing, testing, one, two, three, four!1@One!L}\index[A]{Testing, testing, one, two, three, four!1@One!M}\index[A]{Testing, testing, one, two, three, four!1@One!N}\index[A]{Testing, testing, one, two, three, four!1@One!O}\index[A]{Testing, testing, one, two, three, four!1@One!P}\index[A]{Testing, testing, one, two, three, four!1@One!Q}\index[A]{Testing, testing, one, two, three, four!1@One!R}\index[A]{Testing, testing, one, two, three, four!1@One!S}\index[A]{Testing, testing, one, two, three, four!1@One!T}\index[A]{Testing, testing, one, two, three, four!1@One!U}\index[A]{Testing, testing, one, two, three, four!1@One!V}\index[A]{Testing, testing, one, two, three, four!1@One!X}\index[A]{Testing, testing, one, two, three, four!1@One!Y}\index[A]{Testing, testing, one, two, three, four!1@One!Z}\index[A]{Testing, testing, one, two, three, four!2@Two!A}\index[A]{Testing, testing, one, two, three, four!2@Two!B}\index[A]{Testing, testing, one, two, three, four!2@Two!C}\index[A]{Testing, testing, one, two, three, four!2@Two!D}\index[A]{Testing, testing, one, two, three, four!2@Two!E}\index[A]{Testing, testing, one, two, three, four!2@Two!F}\index[A]{Testing, testing, one, two, three, four!2@Two!G}\index[A]{Testing, testing, one, two, three, four!2@Two!H}\index[A]{Testing, testing, one, two, three, four!2@Two!I}\index[A]{Testing, testing, one, two, three, four!2@Two!J}\index[A]{Testing, testing, one, two, three, four!2@Two!K}\index[A]{Testing, testing, one, two, three, four!2@Two!L}\index[A]{Testing, testing, one, two, three, four!2@Two!M}\index[A]{Testing, testing, one, two, three, four!2@Two!N}\index[A]{Testing, testing, one, two, three, four!2@Two!O}\index[A]{Testing, testing, one, two, three, four!2@Two!P}\index[A]{Testing, testing, one, two, three, four!2@Two!Q}\index[A]{Testing, testing, one, two, three, four!2@Two!R}\index[A]{Testing, testing, one, two, three, four!2@Two!S}\index[A]{Testing, testing, one, two, three, four!2@Two!T}\index[A]{Testing, testing, one, two, three, four!2@Two!U}\index[A]{Testing, testing, one, two, three, four!2@Two!V}\index[A]{Testing, testing, one, two, three, four!2@Two!X}\index[A]{Testing, testing, one, two, three, four!2@Two!Y}\index[A]{Testing, testing, one, two, three, four!2@Two!Z}\index[A]{Testing, testing, one, two, three, four!3@Three!A}\index[A]{Testing, testing, one, two, three, four!3@Three!B}\index[A]{Testing, testing, one, two, three, four!3@Three!C}\index[A]{Testing, testing, one, two, three, four!3@Three!D}\index[A]{Testing, testing, one, two, three, four!3@Three!E}\index[A]{Testing, testing, one, two, three, four!3@Three!F}\index[A]{Testing, testing, one, two, three, four!3@Three!G}\index[A]{Testing, testing, one, two, three, four!3@Three!H}\index[A]{Testing, testing, one, two, three, four!3@Three!I}\index[A]{Testing, testing, one, two, three, four!3@Three!J}\index[A]{Testing, testing, one, two, three, four!3@Three!K}\index[A]{Testing, testing, one, two, three, four!3@Three!L}\index[A]{Testing, testing, one, two, three, four!3@Three!M}\index[A]{Testing, testing, one, two, three, four!3@Three!N}\index[A]{Testing, testing, one, two, three, four!3@Three!O}\index[A]{Testing, testing, one, two, three, four!3@Three!P}\index[A]{Testing, testing, one, two, three, four!3@Three!Q}\index[A]{Testing, testing, one, two, three, four!3@Three!R}\index[A]{Testing, testing, one, two, three, four!3@Three!S}\index[A]{Testing, testing, one, two, three, four!3@Three!T}\index[A]{Testing, testing, one, two, three, four!3@Three!U}\index[A]{Testing, testing, one, two, three, four!3@Three!V}\index[A]{Testing, testing, one, two, three, four!3@Three!X}\index[A]{Testing, testing, one, two, three, four!3@Three!Y}\index[A]{Testing, testing, one, two, three, four!3@Three!Z} \index[A]{Testing, testing, one, two, three, four!4@Four!A}\index[A]{Testing, testing, one, two, three, four!4@Four!B}\index[A]{Testing, testing, one, two, three, four!4@Four!C}\index[A]{Testing, testing, one, two, three, four!4@Four!D}\index[A]{Testing, testing, one, two, three, four!4@Four!E}\index[A]{Testing, testing, one, two, three, four!4@Four!F}\index[A]{Testing, testing, one, two, three, four!4@Four!G}\index[A]{Testing, testing, one, two, three, four!4@Four!H}\index[A]{Testing, testing, one, two, three, four!4@Four!I}\index[A]{Testing, testing, one, two, three, four!4@Four!J}\index[A]{Testing, testing, one, two, three, four!4@Four!K}\index[A]{Testing, testing, one, two, three, four!4@Four!L}\index[A]{Testing, testing, one, two, three, four!4@Four!M}\index[A]{Testing, testing, one, two, three, four!4@Four!N}\index[A]{Testing, testing, one, two, three, four!4@Four!O}\index[A]{Testing, testing, one, two, three, four!4@Four!P}\index[A]{Testing, testing, one, two, three, four!4@Four!Q}\index[A]{Testing, testing, one, two, three, four!4@Four!R}\index[A]{Testing, testing, one, two, three, four!4@Four!S}\index[A]{Testing, testing, one, two, three, four!4@Four!T}\index[A]{Testing, testing, one, two, three, four!4@Four!U}\index[A]{Testing, testing, one, two, three, four!4@Four!V}\index[A]{Testing, testing, one, two, three, four!4@Four!X}\index[A]{Testing, testing, one, two, three, four!4@Four!Y}\index[A]{Testing, testing, one, two, three, four!4@Four!Z}

\backmatter
\indexprologue{\small Description of Appendix A goes here.}

\printindex[A]

\end{document}

使用index_styel2.ist：

item_0 "\n \\item \\small "

delim_0 " \\Dotfill "
delim_1 " \\Dotfill "
delim_2 " \\Dotfill "

我发现这问题，但当我尝试实施我在那里找到的解决方案时，它会在.ind输出文件中产生错误，并且神秘地“它”和“它...”出现在新页面上方，而不是索引条目。这就是在 Overleaf 中使用以下内容时发生的情况（使用相同的.ist文件）：

\documentclass[10pt, paper=156mm:235mm, BCOR=12mm, headings=optiontotocandhead, headings=openany]{scrbook}


\usepackage[splitindex]{imakeidx}
\makeindex[options= -s index_style2.ist, intoc,name=A,title=\mbox{Appendix A},columns=1]

\makeatletter
\newcommand{\Dotfill}{\leavevmode \leaders \hb@xt@ 0.75em{\hss .\hss }\hfill \kern \z@}
\makeatother

\usepackage{repeatindex}

\usepackage{filecontents}

\begin{filecontents}{\jobname.mst}
item_0 "\n  \\item ["
delim_0 "], "
\end{filecontents}


\begin{document}
\frontmatter
\mainmatter
\chapter{The First Chapter} 
\index[A]{Testing, testing, one, two, three, four!1@One!A}\index[A]{Testing, testing, one, two, three, four!1@One!B}\index[A]{Testing, testing, one, two, three, four!1@One!C}\index[A]{Testing, testing, one, two, three, four!1@One!D}\index[A]{Testing, testing, one, two, three, four!1@One!E}\index[A]{Testing, testing, one, two, three, four!1@One!F}\index[A]{Testing, testing, one, two, three, four!1@One!G}\index[A]{Testing, testing, one, two, three, four!1@One!H}\index[A]{Testing, testing, one, two, three, four!1@One!I}\index[A]{Testing, testing, one, two, three, four!1@One!J}\index[A]{Testing, testing, one, two, three, four!1@One!K}\index[A]{Testing, testing, one, two, three, four!1@One!L}\index[A]{Testing, testing, one, two, three, four!1@One!M}\index[A]{Testing, testing, one, two, three, four!1@One!N}\index[A]{Testing, testing, one, two, three, four!1@One!O}\index[A]{Testing, testing, one, two, three, four!1@One!P}\index[A]{Testing, testing, one, two, three, four!1@One!Q}\index[A]{Testing, testing, one, two, three, four!1@One!R}\index[A]{Testing, testing, one, two, three, four!1@One!S}\index[A]{Testing, testing, one, two, three, four!1@One!T}\index[A]{Testing, testing, one, two, three, four!1@One!U}\index[A]{Testing, testing, one, two, three, four!1@One!V}\index[A]{Testing, testing, one, two, three, four!1@One!X}\index[A]{Testing, testing, one, two, three, four!1@One!Y}\index[A]{Testing, testing, one, two, three, four!1@One!Z}\index[A]{Testing, testing, one, two, three, four!2@Two!A}\index[A]{Testing, testing, one, two, three, four!2@Two!B}\index[A]{Testing, testing, one, two, three, four!2@Two!C}\index[A]{Testing, testing, one, two, three, four!2@Two!D}\index[A]{Testing, testing, one, two, three, four!2@Two!E}\index[A]{Testing, testing, one, two, three, four!2@Two!F}\index[A]{Testing, testing, one, two, three, four!2@Two!G}\index[A]{Testing, testing, one, two, three, four!2@Two!H}\index[A]{Testing, testing, one, two, three, four!2@Two!I}\index[A]{Testing, testing, one, two, three, four!2@Two!J}\index[A]{Testing, testing, one, two, three, four!2@Two!K}\index[A]{Testing, testing, one, two, three, four!2@Two!L}\index[A]{Testing, testing, one, two, three, four!2@Two!M}\index[A]{Testing, testing, one, two, three, four!2@Two!N}\index[A]{Testing, testing, one, two, three, four!2@Two!O}\index[A]{Testing, testing, one, two, three, four!2@Two!P}\index[A]{Testing, testing, one, two, three, four!2@Two!Q}\index[A]{Testing, testing, one, two, three, four!2@Two!R}\index[A]{Testing, testing, one, two, three, four!2@Two!S}\index[A]{Testing, testing, one, two, three, four!2@Two!T}\index[A]{Testing, testing, one, two, three, four!2@Two!U}\index[A]{Testing, testing, one, two, three, four!2@Two!V}\index[A]{Testing, testing, one, two, three, four!2@Two!X}\index[A]{Testing, testing, one, two, three, four!2@Two!Y}\index[A]{Testing, testing, one, two, three, four!2@Two!Z}\index[A]{Testing, testing, one, two, three, four!3@Three!A}\index[A]{Testing, testing, one, two, three, four!3@Three!B}\index[A]{Testing, testing, one, two, three, four!3@Three!C}\index[A]{Testing, testing, one, two, three, four!3@Three!D}\index[A]{Testing, testing, one, two, three, four!3@Three!E}\index[A]{Testing, testing, one, two, three, four!3@Three!F}\index[A]{Testing, testing, one, two, three, four!3@Three!G}\index[A]{Testing, testing, one, two, three, four!3@Three!H}\index[A]{Testing, testing, one, two, three, four!3@Three!I}\index[A]{Testing, testing, one, two, three, four!3@Three!J}\index[A]{Testing, testing, one, two, three, four!3@Three!K}\index[A]{Testing, testing, one, two, three, four!3@Three!L}\index[A]{Testing, testing, one, two, three, four!3@Three!M}\index[A]{Testing, testing, one, two, three, four!3@Three!N}\index[A]{Testing, testing, one, two, three, four!3@Three!O}\index[A]{Testing, testing, one, two, three, four!3@Three!P}\index[A]{Testing, testing, one, two, three, four!3@Three!Q}\index[A]{Testing, testing, one, two, three, four!3@Three!R}\index[A]{Testing, testing, one, two, three, four!3@Three!S}\index[A]{Testing, testing, one, two, three, four!3@Three!T}\index[A]{Testing, testing, one, two, three, four!3@Three!U}\index[A]{Testing, testing, one, two, three, four!3@Three!V}\index[A]{Testing, testing, one, two, three, four!3@Three!X}\index[A]{Testing, testing, one, two, three, four!3@Three!Y}\index[A]{Testing, testing, one, two, three, four!3@Three!Z} \index[A]{Testing, testing, one, two, three, four!4@Four!A}\index[A]{Testing, testing, one, two, three, four!4@Four!B}\index[A]{Testing, testing, one, two, three, four!4@Four!C}\index[A]{Testing, testing, one, two, three, four!4@Four!D}\index[A]{Testing, testing, one, two, three, four!4@Four!E}\index[A]{Testing, testing, one, two, three, four!4@Four!F}\index[A]{Testing, testing, one, two, three, four!4@Four!G}\index[A]{Testing, testing, one, two, three, four!4@Four!H}\index[A]{Testing, testing, one, two, three, four!4@Four!I}\index[A]{Testing, testing, one, two, three, four!4@Four!J}\index[A]{Testing, testing, one, two, three, four!4@Four!K}\index[A]{Testing, testing, one, two, three, four!4@Four!L}\index[A]{Testing, testing, one, two, three, four!4@Four!M}\index[A]{Testing, testing, one, two, three, four!4@Four!N}\index[A]{Testing, testing, one, two, three, four!4@Four!O}\index[A]{Testing, testing, one, two, three, four!4@Four!P}\index[A]{Testing, testing, one, two, three, four!4@Four!Q}\index[A]{Testing, testing, one, two, three, four!4@Four!R}\index[A]{Testing, testing, one, two, three, four!4@Four!S}\index[A]{Testing, testing, one, two, three, four!4@Four!T}\index[A]{Testing, testing, one, two, three, four!4@Four!U}\index[A]{Testing, testing, one, two, three, four!4@Four!V}\index[A]{Testing, testing, one, two, three, four!4@Four!X}\index[A]{Testing, testing, one, two, three, four!4@Four!Y}\index[A]{Testing, testing, one, two, three, four!4@Four!Z}

\backmatter
\indexprologue{\small Description of Appendix A goes here.}

\printindex[A]

\end{document}

Answer 1

除了上述错误之外，上述错误it...来自斜体形状。根据我的想法，我看到以下错误

这意味着\mathit正在使用并导致错误，因为它需要数学模式。

深入研究repeatindex深入源代码，你会发现

\renewcommand{\subsubitem}{%
    \orig@subsubitem
    \expandafter\hhafterpage\expandafter{\expandafter\par\expandafter{%
        \expandafter\expandafter\itshape\@@entry\dots}}%
    \xdef\@@entry{\@entry}%
  }

负责复制顶级索引项。

该软件包创建于 2001 年，从那时起，LaTeX 源代码中的许多东西都发生了变化，包括\itshape。如果你运行，\show\itshape你会看到

> \itshape=\protected macro:
->\not@math@alphabet \itshape \mathit \fontshape \itdefault \selectfont .
l.75 \show\itshape

因此它被定义为受保护的宏，基本上如果你查找 LaTeX 源base/ltfssaxes.dtx‎，你会发现定义

\protected\def\itshape
     {\not@math@alphabet\itshape\mathit
      \fontshape\itdefault\selectfont}%

这样你就有两个选择：

1. 修改repeatindex包代码并直接或通过之前\protect添加\itshapeetoolbox\patchcmd

2. 通过添加其定义或首先声明该命令是强大的，\itshape在序言中改变它本身。\protect

   \makeatletter
   \protected\def\itshape
        {\protect\not@math@alphabet\itshape\mathit
         \fontshape\itdefault\selectfont}%
   \makeatother
   

   \makeatletter
   \DeclareRobustCommand\itshape
           {\not@math@alphabet\itshape\mathit
            \fontshape\itdefault\selectfont}
   \makeatother
   

   任何代码片段都可以完成这个工作。

话虽如此，值得一提的是，repeatindex需要特殊的语法才能正常工作

您必须以特殊格式生成 .ind 文件，并将 的条目\item 括在其中[...]（例如 \item [Main Item A], 1, 3, 6 ：）。

正如我所见，你正试图通过

\usepackage{filecontents}

\begin{filecontents}{\jobname.mst}
item_0 "\n  \\item ["
delim_0 "], "
\end{filecontents}

但由于您已指定index_style2.ist为样式文件，因此上述代码完全不起作用。您最好修改样式文件index_style2.ist本身，包括这些更改。

总结

repeatindex自 2001 年以来一直没有更新，一些基本命令已经更改，即\itshape。在前面添加以下代码\printindex[A]即可修复

\makeatletter
\DeclareRobustCommand\itshape
        {\not@math@alphabet\itshape\mathit
         \fontshape\itdefault\selectfont}
\makeatother

还要对您的程序包进行一些更改，index_style2.ist以使该程序包正常工作：

item_0 "\n \\small\\item ["
item_x1 "]\n    \\subitem "

delim_0 "] \\Dotfill "
delim_1 " \\Dotfill "
delim_2 " \\Dotfill "

完整 MWE：

\documentclass[10pt, paper=156mm:235mm, BCOR=12mm, headings=optiontotocandhead, headings=openany]{scrbook}

\usepackage[splitindex]{imakeidx}
\makeindex[options= -s index_style2.ist, intoc,name=A,title=\mbox{Appendix A},columns=1]

\makeatletter
\newcommand{\Dotfill}{\leavevmode \leaders \hb@xt@ 0.75em{\hss .\hss }\hfill \kern \z@}
\makeatother

\usepackage{repeatindex}

\begin{document}
\frontmatter
\mainmatter
\chapter{The First Chapter} 
\index[A]{Testing, testing, one, two, three, four!1@One!A}\index[A]{Testing, testing, one, two, three, four!1@One!B}\index[A]{Testing, testing, one, two, three, four!1@One!C}\index[A]{Testing, testing, one, two, three, four!1@One!D}\index[A]{Testing, testing, one, two, three, four!1@One!E}\index[A]{Testing, testing, one, two, three, four!1@One!F}\index[A]{Testing, testing, one, two, three, four!1@One!G}\index[A]{Testing, testing, one, two, three, four!1@One!H}\index[A]{Testing, testing, one, two, three, four!1@One!I}\index[A]{Testing, testing, one, two, three, four!1@One!J}\index[A]{Testing, testing, one, two, three, four!1@One!K}\index[A]{Testing, testing, one, two, three, four!1@One!L}\index[A]{Testing, testing, one, two, three, four!1@One!M}\index[A]{Testing, testing, one, two, three, four!1@One!N}\index[A]{Testing, testing, one, two, three, four!1@One!O}\index[A]{Testing, testing, one, two, three, four!1@One!P}\index[A]{Testing, testing, one, two, three, four!1@One!Q}\index[A]{Testing, testing, one, two, three, four!1@One!R}\index[A]{Testing, testing, one, two, three, four!1@One!S}\index[A]{Testing, testing, one, two, three, four!1@One!T}\index[A]{Testing, testing, one, two, three, four!1@One!U}\index[A]{Testing, testing, one, two, three, four!1@One!V}\index[A]{Testing, testing, one, two, three, four!1@One!X}\index[A]{Testing, testing, one, two, three, four!1@One!Y}\index[A]{Testing, testing, one, two, three, four!1@One!Z}\index[A]{Testing, testing, one, two, three, four!2@Two!A}\index[A]{Testing, testing, one, two, three, four!2@Two!B}\index[A]{Testing, testing, one, two, three, four!2@Two!C}\index[A]{Testing, testing, one, two, three, four!2@Two!D}\index[A]{Testing, testing, one, two, three, four!2@Two!E}\index[A]{Testing, testing, one, two, three, four!2@Two!F}\index[A]{Testing, testing, one, two, three, four!2@Two!G}\index[A]{Testing, testing, one, two, three, four!2@Two!H}\index[A]{Testing, testing, one, two, three, four!2@Two!I}\index[A]{Testing, testing, one, two, three, four!2@Two!J}\index[A]{Testing, testing, one, two, three, four!2@Two!K}\index[A]{Testing, testing, one, two, three, four!2@Two!L}\index[A]{Testing, testing, one, two, three, four!2@Two!M}\index[A]{Testing, testing, one, two, three, four!2@Two!N}\index[A]{Testing, testing, one, two, three, four!2@Two!O}\index[A]{Testing, testing, one, two, three, four!2@Two!P}\index[A]{Testing, testing, one, two, three, four!2@Two!Q}\index[A]{Testing, testing, one, two, three, four!2@Two!R}\index[A]{Testing, testing, one, two, three, four!2@Two!S}\index[A]{Testing, testing, one, two, three, four!2@Two!T}\index[A]{Testing, testing, one, two, three, four!2@Two!U}\index[A]{Testing, testing, one, two, three, four!2@Two!V}\index[A]{Testing, testing, one, two, three, four!2@Two!X}\index[A]{Testing, testing, one, two, three, four!2@Two!Y}\index[A]{Testing, testing, one, two, three, four!2@Two!Z}\index[A]{Testing, testing, one, two, three, four!3@Three!A}\index[A]{Testing, testing, one, two, three, four!3@Three!B}\index[A]{Testing, testing, one, two, three, four!3@Three!C}\index[A]{Testing, testing, one, two, three, four!3@Three!D}\index[A]{Testing, testing, one, two, three, four!3@Three!E}\index[A]{Testing, testing, one, two, three, four!3@Three!F}\index[A]{Testing, testing, one, two, three, four!3@Three!G}\index[A]{Testing, testing, one, two, three, four!3@Three!H}\index[A]{Testing, testing, one, two, three, four!3@Three!I}\index[A]{Testing, testing, one, two, three, four!3@Three!J}\index[A]{Testing, testing, one, two, three, four!3@Three!K}\index[A]{Testing, testing, one, two, three, four!3@Three!L}\index[A]{Testing, testing, one, two, three, four!3@Three!M}\index[A]{Testing, testing, one, two, three, four!3@Three!N}\index[A]{Testing, testing, one, two, three, four!3@Three!O}\index[A]{Testing, testing, one, two, three, four!3@Three!P}\index[A]{Testing, testing, one, two, three, four!3@Three!Q}\index[A]{Testing, testing, one, two, three, four!3@Three!R}\index[A]{Testing, testing, one, two, three, four!3@Three!S}\index[A]{Testing, testing, one, two, three, four!3@Three!T}\index[A]{Testing, testing, one, two, three, four!3@Three!U}\index[A]{Testing, testing, one, two, three, four!3@Three!V}\index[A]{Testing, testing, one, two, three, four!3@Three!X}\index[A]{Testing, testing, one, two, three, four!3@Three!Y}\index[A]{Testing, testing, one, two, three, four!3@Three!Z} \index[A]{Testing, testing, one, two, three, four!4@Four!A}\index[A]{Testing, testing, one, two, three, four!4@Four!B}\index[A]{Testing, testing, one, two, three, four!4@Four!C}\index[A]{Testing, testing, one, two, three, four!4@Four!D}\index[A]{Testing, testing, one, two, three, four!4@Four!E}\index[A]{Testing, testing, one, two, three, four!4@Four!F}\index[A]{Testing, testing, one, two, three, four!4@Four!G}\index[A]{Testing, testing, one, two, three, four!4@Four!H}\index[A]{Testing, testing, one, two, three, four!4@Four!I}\index[A]{Testing, testing, one, two, three, four!4@Four!J}\index[A]{Testing, testing, one, two, three, four!4@Four!K}\index[A]{Testing, testing, one, two, three, four!4@Four!L}\index[A]{Testing, testing, one, two, three, four!4@Four!M}\index[A]{Testing, testing, one, two, three, four!4@Four!N}\index[A]{Testing, testing, one, two, three, four!4@Four!O}\index[A]{Testing, testing, one, two, three, four!4@Four!P}\index[A]{Testing, testing, one, two, three, four!4@Four!Q}\index[A]{Testing, testing, one, two, three, four!4@Four!R}\index[A]{Testing, testing, one, two, three, four!4@Four!S}\index[A]{Testing, testing, one, two, three, four!4@Four!T}\index[A]{Testing, testing, one, two, three, four!4@Four!U}\index[A]{Testing, testing, one, two, three, four!4@Four!V}\index[A]{Testing, testing, one, two, three, four!4@Four!X}\index[A]{Testing, testing, one, two, three, four!4@Four!Y}\index[A]{Testing, testing, one, two, three, four!4@Four!Z}

\backmatter
\indexprologue{\small Description of Appendix A goes here.}

\makeatletter
\DeclareRobustCommand\itshape
        {\not@math@alphabet\itshape\mathit
         \fontshape\itdefault\selectfont}
\makeatother
\printindex[A]

\end{document}