我创建了一个索引，其中一些条目有子条目：对于这些类型的条目，我创建了\ati宏，而对于没有子条目的条目，我使用另一个宏。
在那些由宏创建的条目中，\ati我希望顶级条目为粗体。我能够使用“Entry”来获得我想要的结果，而无需宏：
但是我无法用宏实现同样的效果不改变参数数量。我希望这个宏只有两个参数，按此顺序，因为我在现有文档中使用它。
我认为实现此目的的方法是以某种方式处理第一个!参数中第一个感叹号 ( ) 之前和之后的文本，然后以某种方式将其合并到宏定义中，而不改变参数数量。但我不知道该怎么做。
（如果它对解决方案很重要，我会使用它texindy作为索引处理器。）
梅威瑟：
\documentclass{book}
\usepackage{blindtext}
\usepackage{splitidx}
\makeindex
\def \ati#1#2{#2\index{#1}} % "Add to index" macro
\begin{document}
\blindtext
There are many ways to write a document. You could use a \ati{Markup!LaTeX@\LaTeX}{\LaTeX}, \ati{Markup!Markdown}{Markdown} or even \ati{Markup!HTML}{HTML}. If you do write your document by hand, do not use \ati{Markup!XML}{XML}, because you are going to go mad.
\blindtext[5]
\ati{Markup!LaTeX@\LaTeX}{\LaTeX} is obviously the best to produce high-quality PDF file, but you do not have to type it by hand. You can use \ati{Markup!Markdown}{Markdown} instead and then convert it to both \ati{Markup!HTML}{HTML} and \ati{Markup!LaTeX@\LaTeX}{\LaTeX}, as well as many other formats.
Now comes interesting stuff. When you write a technical book in \ati{Markup!LaTeX@\LaTeX}{\LaTeX}, you can quite easily create an \sindex{Index creation}index. When you do, you have quite a few choices when it comes to packages you use and \ati{Index processor}{index processors} that will sort your .idx file into .ind file that gets included in your document at the time of next compilation.
\blindtext[6]
One of those index processors is \ati{Index processor!MakeIndex}{MakeIndex}, but there are also few other alternatives. I personally prefer to use \ati{Index processor!xindy}{xindy} through command line program called texindy.
\pagebreak
Now, I want to make each top-level entry like ``Index processor'' and ``Markup'' bold, only for those entries which do have sub-entries (this is what \\ati macro is for). It would be awesome if I could use same macro even for entries which do not have subentries and still get bold top-level entries only for those entries with subentries, but it is not must-have.
So what I want to produce looks like this:
\index{Entry@\textbf{Entry}}{entry}
\index{Entry@\textbf{Entry}!subentry}{subentry}
\index{Entry@\textbf{Entry}!subentry!subsubentry}{subentry}
\index{Entry@\textbf{Entry}!another entry}{another entry}
\index{Entry@\textbf{Entry}!another entry}{another entry}
\index{Entry@\textbf{Entry}!yet another entry}{yet another entry}
but I want to achieve it inside ``ati'' macro.
\printindex
\end{document}
这是可能吗？