比较来自 \linelabel 的行号作为 XeTeX 中的数字变量

Question

我有一份包含采访记录的文档，我想自动获取正确的行号作为参考。因此，我\linelabel在lineno环境中使用 XeTeX 进行编译，以标记参考的开始和结束。我解决了这一部分。

但是当行号相同时，我也想只打印第一个标签。下面是我想做的一个示例：

\documentclass{scrartcl}
\usepackage{lineno}
\usepackage{pdftexcmds}

\makeatletter
\newcommand*{\test}[2]{%
  \ifnum\pdf@strcmp{\unexpanded{#1}}{\unexpanded{#2}}=0 #1\else #1--#2\fi
}
\makeatother

\begin{document}

\section{Text}

This text is derived from the transcript: 
example of some transcript (transcript: \test{\ref{begin}}{\ref{end}}).

\section{Transcript}

\begin{linenumbers}
This is the \linelabel{begin} example of some transcript\linelabel{end} 
that is going to have linenumbers. I want to get the beginning position 
of a certain citation and the ending position of the very same citation.
\end{linenumbers}

\end{document}

如您所见，这两个数字没有被识别为相同。它应该只是显示“(transcript: 1)”。有办法吗？

Answer 1

通常的\ref命令是不可扩展的——宏\pdf@strcmp在这里不起作用，无法测试行号是否相等。

使用refcount包及其\getrefnumber宏作为示例，并从切换\test{\ref{begin}}{\ref{end}}到。这也\test{begin}{end}可以避免每次繁琐的书写。\ref

\documentclass{scrartcl}
\usepackage{lineno}
\usepackage{refcount}
\usepackage{pdftexcmds}


\newcommand*{\test}[2]{%
  \ifnum\getrefnumber{#1}=\getrefnumber{#2}%
  \ref{#1}%
  \else
  \ref{#1}--\ref{#2}%
  \fi
}


\begin{document}

\section{Text}

This text is derived from the transcript: 
example of some transcript (transcript: \test{begin}{end}).

However, see \test{begin}{otherend}.

\section{Transcript}

\begin{linenumbers}
This is the \linelabel{begin} example of some transcript\linelabel{end} 
that is going to have linenumbers. I want to get the beginning position 
of a certain citation and the ending position of the very same citation. \linelabel{otherend}
\end{linenumbers}

\end{document}