有没有办法让交叉引用写出\part这样的数字？
参见上文第1部分，第 3 页。
我目前正在使用：\here{}\label{}和\footnote{Cf. \where{}. Page \pageref{}.}
所以我需要一些东西来检查标签在哪个部分，然后在脚注中写下该部分的编号。
编辑：我认为这并不重要\where，\here但我根据要求添加了代码。
\makeatletter
\newcount\here@undef
\newcommand{\here}[1]{%
\@ifundefined{here@#1@undef}{}{\global\advance\here@undef by -1}%
\global\@namedef{here@#1}{}%
}
\newcommand{\where}[1]{%
\@ifundefined{here@#1}{%
below%
\@ifundefined{here@#1@undef}{%
\global\@namedef{here@#1@undef}{}%
\global\advance\here@undef by 1
}{}%
}{%
above%
}%
}
\AtEndDocument{%
\ifnum\here@undef>0
\GenericWarning{}{There were undefined above/below labels}%
\fi}
\makeatother%
答案1
该包zref用于执行此类任务：提取标签数据（如果\zlabel使用相关命令等）。
为了提供正确的信息，必须存储“属性”，在这种情况下，属性是应连接到标签的零件编号。
该命令\here使用给定名称存储标签\zlabel@byprops，\there然后提取信息。
更新带有可用超链接的版本：
\documentclass{scrbook}
\usepackage[counter,user,hyperref]{zref}
\makeatletter
\AtBeginDocument{%
\@ifpackageloaded{hyperref}{%
}{
\providecommand{\phantomsection}{}
\providecommand{\hyperlink}[2]{#2}
}
\zref@newlist{partpage}
\zref@newprop*{partprop}[-1]{\number\value{part}}
\zref@addprops{partpage}{partprop,page,anchor} % page is defined by default!
\newcounter{herecntr}
\newcommand{\here}[1]{%
\phantomsection% Needed for correct hyper links
\zref@labelbyprops{#1}{partprop,page,anchor}%
}
\newcommand{\there}[1]{%
Part \zref[partprop]{#1}, page \hyperlink{\zref@extract{#1}{anchor}}{\zpageref{#1}}
}
}
\makeatother
\usepackage{hyperref}
\usepackage{blindtext}
\begin{document}
Now, let us see\footnote{You will find in \there{firstref} some important information, but in \there{secondref} the information is much more important. Give it a try, but do not forget the stuff in \there{somethingdifferent}}
\part{My wonderful first part}
\blindtext[6] firstref\here{firstref}
\part{My second and yet better part}
\blindtext[7] secondref\here{secondref}
\part{My third and yet even better part}
\blindtext[3] thirdref\here{thirdref}
\chapter{Foo}\here{somethingdifferent}
\blindtext[2]
\end{document}
更新对于压缩引用，即，\there如果引用在同一部分，则命令不会打印零件编号！
\documentclass{scrbook}
\usepackage[counter,user,hyperref]{zref}
\makeatletter
\AtBeginDocument{%
\@ifpackageloaded{hyperref}{%
}{
\providecommand{\phantomsection}{}
\providecommand{\hyperlink}[2]{#2}
}
\zref@newlist{partpage}
\zref@newprop*{partprop}[-1]{\number\value{part}}
\zref@addprops{partpage}{partprop,page,anchor} % page is defined by default!
%\newcounter{herecntr}
\newcommand{\here}[1]{%
\phantomsection% Needed for correct hyper links
\zref@labelbyprops{#1}{partprop,page,anchor}%
}
\newcommand{\there}[1]{%
\ifnum\value{part}=\zref@extract{#1}{partprop}\relax% Check whether the current part counter value is the same as the extracted part property from the label
page \hyperlink{\zref@extract{#1}{anchor}}{\zpageref{#1}}
\else% No, it is not the same!
Part \zref[partprop]{#1}, page \hyperlink{\zref@extract{#1}{anchor}}{\zpageref{#1}}%
\fi
}
}
\makeatother
\usepackage{hyperref}
\usepackage{blindtext}
\begin{document}
\part{My wonderful first part}
Now, let us see\footnote{You will find in \there{firstref} some important information, but in \there{secondref} the information is much more important. Give it a try, but do not forget the stuff in \there{somethingdifferent}}
\blindtext[6] firstref\here{firstref}
\part{My second and yet better part}
\blindtext[7] secondref\here{secondref}
\part{My third and yet even better part}
\blindtext[3] thirdref\here{thirdref}
\chapter{Foo}\here{somethingdifferent}
\blindtext[2]
\end{document}