是否有命令(例如,类似命令\pages{pangolins}
)表示索引条目“pangolins”的页码(和页面范围)?如果没有,是否有任何优雅的方法来编写这样的命令,无论是否使用现有的索引包(如 imakeidx)?
下面是如何使用此类命令的简单示例:
\documentclass{book}
\usepackage{imakeidx}
\makeindex
\begin{document}
Here is a paragraph about pangolins\index{pangolins}. Pangolins are the only mammals covered in scales.
Here is a paragraph about meerkats. Meerkats are immune to the venom of scorpions and snakes.
Here is another paragraph about pangolins. A single pangolin can consume 20,000 ants per day. If you want to learn more about pangolins, see page \pages{pangolins}.
\end{document}
答案1
这也支持页面范围和多个页面(但页面范围不应与单个引用混合)。它使用了 Barbara Beeton 在问题评论中的想法。
\documentclass{book}
\usepackage{imakeidx}
\usepackage{xparse}
\usepackage{lipsum}
\ExplSyntaxOn
\NewDocumentCommand{\readindex}{O{\c_sys_jobname_str}}
{
\group_begin:
\cs_set_eq:NN \indexentry \readindexentry
\file_if_exist_input:n { #1.idx }
\group_end:
}
\NewDocumentCommand{\pages}{m}
{
\prop_item:Nn \g_readindex_prop { #1 }
}
\NewDocumentCommand{\readindexentry}{>{\SplitArgument{1}{|}}m m}
{
\readindex_process:nnn #1 { #2 }
}
\prop_new:N \g_readindex_prop
\cs_new_protected:Nn \readindex_process:nnn
{
\str_case:nnF { #2 }
{
{ ( }{ \readindex_start:nn { #1 } { #3 } }
{ ) }{ \readindex_end:nn { #1 } { #3 } }
}
{ \readindex_standard:nn { #1 } { #3 } }
}
\cs_new_protected:Nn \readindex_standard:nn
{
\prop_if_in:NnTF \g_readindex_prop { #1 }
{
\prop_gput:Nnx \g_readindex_prop { #1 }
{ \prop_item:Nn \g_readindex_prop { #1 } , ~ #2 }
}
{
\prop_gput:Nnn \g_readindex_prop { #1 } { #2 }
}
}
\cs_new_protected:Nn \readindex_start:nn
{
\prop_gput:Nnn \g_readindex_prop { #1 } { #2 }
}
\cs_new_protected:Nn \readindex_end:nn
{
\prop_gput:Nnx \g_readindex_prop { #1 }
{ \prop_item:Nn \g_readindex_prop { #1 } -- #2 }
}
\ExplSyntaxOff
\readindex
\makeindex % must be ***after*** \readindex
\begin{document}
For elephants, see \pages{elephants}.
Here we also talk about unicorns\index{unicorns}, treated on \pages{unicorns}.
Here is a paragraph about pangolins\index{pangolins}.
Pangolins are the only mammals covered in scales.
Here is a paragraph about meerkats. Meerkats are immune to
the venom of scorpions and snakes.
Here is another paragraph about pangolins. A single pangolin
can consume 20,000 ants per day. If you want to learn more about
pangolins, see page \pages{pangolins}.
Now we talk about elephants\index{elephants|(}
\lipsum[1-10]
End of elephant talk\index{elephants|)}.
Again a unicorn\index{unicorns}.
\end{document}
可以根据存储在属性列表中的值自动添加“page”-“pages”前缀。
支持多个索引,但\readindex
每个索引都应使用特定的命令:\readindex[<index name>]
,其中名称是相应.idx
文件的文件名。
答案2
鉴于精确的您做出的承诺(每个项目只有一个索引条目,只有一个页面引用等)您可以修改命令,\index
以便它自动创建一个具有相同名称的标签。然后您只需使用普通\pageref
命令进行交叉引用即可。
\documentclass{article}
\usepackage{makeidx}
\makeatletter
\def\@wrindex#1{%
\protected@write\@indexfile{}%
{\string\indexentry{#1}{\thepage}}%
\protected@write\@auxout{}%
{\string\newlabel{#1}{{\@currentlabel}{\thepage}}}%
\endgroup
\@esphack}
\makeatother
\makeindex
\begin{document}
If \index{pangolins} are referred to here, we can wait a little while and then
\clearpage
Refer to the place (\pageref{pangolins}) where we previously referred to them!
\printindex
\end{document}
答案3
为了使答案更加完整,在尝试各种选项后出现的一个简单的方法是使用\phantomsection
和标记特定的单词,\label
然后使用\pageref
将页码放在需要的位置:
\documentclass{book}
\newcommand{\ps}{\phantomsection}
\begin{document}
Here is a paragraph about {\ps}pangolins\label{pangolins}.
Here is another paragraph about pangolins. If you want to learn more about pangolins, see page \pageref{pangolins}.
\end{document}
在我尝试过的情况下,这种方法似乎有效,但我对 LaTeX 幕后发生的事情了解有限;这种方法可能存在一些我尚未意识到的缺陷。(欢迎批评。)