我正在寻找一种简单的方法来引用文档中的文本。类似以下内容：
\documentclass{article}
\def\labeltext[#1]#2{#2}
\begin{document}
Refer forward to (\ref{text:first}) and to (\ref{text:second}).
This is my \labeltext[text:first]{\textbf{First} item}.
This is my \labeltext[text:second]{\textit{Second} item}.
Refer back to (\ref{text:first}) and to (\ref{text:second}).
\end{document}
我想要输出
请参阅（第一的项目）和（第二物品）。
这是我的第一的项目。这是我的第二物品。
请参阅 (第一的项目）和（第二物品）。
有办法实现这个吗？\ref如果可能的话，我更愿意使用该命令（希望其他软件包也喜欢cleveref并hyperref能很好地使用它），而不是创建新的自定义引用命令。
编辑：我发现了这个解决方案它适用于纯文本，但不适用于粗体/斜体文本。
答案1
您可以使用该包参考值用于实现您自己的引用命令。
通过以下示例，重新实现了一些内容，以便\long可引用的文本片段也可以由几个小段落组成。
但是可引用的文本片段会作为一行 .tex 输入写入 .aux 文件。因此可引用文本的数量受到 TeX 可从一行 .tex 输入中读取的文本量的限制。这又取决于平台。
\documentclass{article}
\usepackage[user]{zref}
\makeatletter
% Implement some zref-infrastructure in terms of \long :
\@ifdefinable\zref@setcurrentlong{%
\protected\long\def\zref@setcurrentlong#1#2{%
\zref@propexists{#1}{\expandafter\def\csname Z@C@#1\endcsname{#2}}%
}%
}%
\protected\long\def\zref@newlabel{%
\@newl@bellong{Z@R}%
}%
\newcommand\@newl@bellong[3]{%
\ifx\@newl@bel\@testdef\expandafter\@firstoftwo\else\expandafter\@secondoftwo\fi
{%
\def\reserved@a{#3}%
\expandafter\ifx\csname #1@#2\endcsname\reserved@a\else\@tempswatrue\fi
}{%
{%
\@ifundefined{#1@#2}\relax{%
\gdef\@multiplelabels{\@latex@warning@no@line{There were multiply-defined labels}}%
\@latex@warning@no@line {Label `#2' multiply defined}%
}\global\@namedef{#1@#2}{#3}%
}%
}%
}%
\def\ZREF@@@newprop#1{%
\long\expandafter\gdef\csname Z@E@\ZREF@P\endcsname##1#1##2##3\ZREF@nil{##2}%
}%
%------------------------------------------------------------------------------------------
\zref@newprop{MyCurrentText}{}%
\newcommand\MyTextref[1]{\zref[{MyCurrentText}]{#1}}%
\newcommand\MyLabeltext[2]{%
\zref@setcurrentlong{MyCurrentText}{#2}%
\zref@labelbyprops{#1}{MyCurrentText}%
\MyTextref{#1}%
}%
\makeatother
\begin{document}
Refer forward to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
This is my \MyLabeltext{text:first}{\textbf{First} item}.
This is my \MyLabeltext{text:second}{\textit{Second} item}.
Refer back to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
\medskip\hrule\medskip
Something with several paragraphs:
\medskip
Refer forward to \MyTextref{text:third}
This is my \MyLabeltext{text:third}{%
\textbf{Third} item's first paragraph.\par
\textbf{Third} item's second paragraph.\par
\textbf{Third} item's third paragraph.%
}
Refer back to \MyTextref{text:third}
\end{document}
如果文本短语不包含，\par则执行以下操作：
\documentclass{article}
\usepackage[user]{zref}
\makeatletter
\zref@newprop{MyCurrentText}{}%
\newcommand\MyTextref[1]{\zref[{MyCurrentText}]{#1}}%
\newcommand\MyLabeltext[2]{%
\zref@setcurrent{MyCurrentText}{#2}%
\zref@labelbyprops{#1}{MyCurrentText}%
\MyTextref{#1}%
}%
\makeatother
\begin{document}
Refer forward to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
This is my \MyLabeltext{text:first}{\textbf{First} item}.
This is my \MyLabeltext{text:second}{\textit{Second} item}.
Refer back to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
\end{document}
如果您希望引用创建指向标签所在位置的超链接，您可以尝试这样的操作 - 为了查看单击超链接后的滚动行为，请以较大的缩放比例查看生成的 .pdf 文件：
\documentclass{article}
\usepackage[colorlinks=true]{hyperref}
\usepackage[user]{zref}
\makeatletter
% Implement some zref-infrastructure in terms of \long :
\@ifdefinable\zref@setcurrentlong{%
\protected\long\def\zref@setcurrentlong#1#2{%
\zref@propexists{#1}{\expandafter\def\csname Z@C@#1\endcsname{#2}}%
}%
}%
\protected\long\def\zref@newlabel{%
\@newl@bellong{Z@R}%
}%
\newcommand\@newl@bellong[3]{%
\ifx\@newl@bel\@testdef\expandafter\@firstoftwo\else\expandafter\@secondoftwo\fi
{%
\def\reserved@a{#3}%
\expandafter\ifx\csname #1@#2\endcsname\reserved@a\else\@tempswatrue\fi
}{%
{%
\@ifundefined{#1@#2}\relax{%
\gdef\@multiplelabels{\@latex@warning@no@line{There were multiply-defined labels}}%
\@latex@warning@no@line {Label `#2' multiply defined}%
}\global\@namedef{#1@#2}{#3}%
}%
}%
}%
\def\ZREF@@@newprop#1{%
\long\expandafter\gdef\csname Z@E@\ZREF@P\endcsname##1#1##2##3\ZREF@nil{##2}%
}%
%------------------------------------------------------------------------------------------
\zref@newprop{MyCurrentText}{}%
\newcommand\MyTextref{\@ifstar\MyTextrefnolink\MyTextreflink}%
\newcommand\MyTextreflink[1]{\hyperlink{MyText.#1}{\zref[{MyCurrentText}]{#1}}}%
\newcommand\MyTextrefnolink[1]{\zref[{MyCurrentText}]{#1}}%
\newcommand\MyLabeltext[2]{%
\zref@setcurrentlong{MyCurrentText}{#2}%
\zref@labelbyprops{#1}{MyCurrentText}%
\Hy@raisedlink{\hyper@anchorstart{MyText.#1}\hyper@anchorend}%
\MyTextref*{#1}%
}%
\makeatother
\begin{document}
Links:
Refer forward to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
No links:
Refer forward to (\MyTextref*{text:first}) and to (\MyTextref*{text:second}).
\vfill
This is my \MyLabeltext{text:first}{\textbf{First} item}.
This is my \MyLabeltext{text:second}{\textit{Second} item}.
\vfill
Links:
Refer back to (\MyTextref{text:first}) and to (\MyTextref{text:second}).
No links:
Refer back to (\MyTextref*{text:first}) and to (\MyTextref*{text:second}).
\vfill
Something with several paragraphs:
\medskip
Links:
Refer forward to \MyTextref{text:third}
No links:
Refer forward to \MyTextref*{text:third}
\vfill
This is my \MyLabeltext{text:third}{%
\textbf{Third} item's first paragraph.\par
\textbf{Third} item's second paragraph.\par
\textbf{Third} item's third paragraph.%
}
\vfill
Links:
Refer back to \MyTextref{text:third}
No links:
Refer back to \MyTextref*{text:third}
\end{document}
.pdf 文件中目标名称的模式为 MyText.<referencing-label>。