
是否有一個命令——例如,類似的命令\pages{pangolins}
——代表索引條目“pangolins”的頁碼(和頁面範圍)?如果沒有,是否有任何優雅的方法來編寫這樣的命令,無論是否使用現有的索引包(如 imakeidx)?
以下是如何使用此類命令的最小範例:
\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
這也支援頁面範圍和多個頁面(但頁面範圍不應與單一引用混合)。它在對該問題的評論中使用了芭芭拉·比頓的想法。
\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}
人們可以根據儲存在屬性清單中的值添加自動“page”-“pages”前綴。
支援多個索引,但\readindex
每個索引都應使用特定的命令:\readindex[<index name>]
,其中名稱是相應.idx
檔案的檔案名稱。
答案2
鑑於相當精確的您所做的承諾(每個項目只有一個索引條目,只有一頁參考等)您可以更改命令,\index
以便它也自動創建一個具有相同名稱的標籤。然後你只需使用普通\pageref
命令來交叉引用它即可。
\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
為了完善答案,在嘗試各種選項時出現的一種簡單方法是使用 來標記特定單詞\phantomsection
,\label
然後使用\pageref
來將頁碼放置在需要的位置:
\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}
這似乎在我嘗試過的情況下有效,但我對 LaTeX 幕後發生的事情了解有限;這種方法可能存在我沒有意識到的缺陷。 (鼓勵批評。)