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如何在 latexdiff 中排除 \label 命令

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如何在 latexdiff 中排除 \label 命令

某些情况下，latexdiff 生成的文件会包含多次定义的标签，这可能会导致编译错误。以下是示例：

旧文本

\documentclass{article}
\usepackage{amsmath}
\begin{document}
Two remarks on the marvelous formula. 

\begin{equation}\label{eq:mass_energy}
    E = mc^2
\end{equation}
\end{document}

新特克斯

\documentclass{article}
\usepackage{amsmath}
\usepackage{theorem}
\newtheorem{theorem}{Theorem}
\begin{document}

\begin{theorem}\label{thm:mass}
We have 
    \begin{equation}\label{eq:mass_energy}
        E = mc^2
    \end{equation}   
\end{theorem}

Two remarks on the marvelous formula. 
\end{document}

差异文本

\documentclass{article}
%DIF LATEXDIFF DIFFERENCE FILE
%DIF DEL old.tex   Sun Dec 20 16:19:03 2020
%DIF ADD new.tex   Sun Dec 20 16:21:10 2020
\usepackage{amsmath}
\usepackage{theorem} %DIF > 
\newtheorem{theorem}{Theorem} %DIF > 
%DIF PREAMBLE EXTENSION ADDED BY LATEXDIFF
%DIF UNDERLINE PREAMBLE %DIF PREAMBLE
\RequirePackage[normalem]{ulem} %DIF PREAMBLE
\RequirePackage{color}\definecolor{RED}{rgb}{1,0,0}\definecolor{BLUE}{rgb}{0,0,1} %DIF PREAMBLE
\providecommand{\DIFadd}[1]{{\protect\color{blue}\uwave{#1}}} %DIF PREAMBLE
\providecommand{\DIFdel}[1]{{\protect\color{red}\sout{#1}}}                      %DIF PREAMBLE
%DIF SAFE PREAMBLE %DIF PREAMBLE
\providecommand{\DIFaddbegin}{} %DIF PREAMBLE
\providecommand{\DIFaddend}{} %DIF PREAMBLE
\providecommand{\DIFdelbegin}{} %DIF PREAMBLE
\providecommand{\DIFdelend}{} %DIF PREAMBLE
\providecommand{\DIFmodbegin}{} %DIF PREAMBLE
\providecommand{\DIFmodend}{} %DIF PREAMBLE
%DIF FLOATSAFE PREAMBLE %DIF PREAMBLE
\providecommand{\DIFaddFL}[1]{\DIFadd{#1}} %DIF PREAMBLE
\providecommand{\DIFdelFL}[1]{\DIFdel{#1}} %DIF PREAMBLE
\providecommand{\DIFaddbeginFL}{} %DIF PREAMBLE
\providecommand{\DIFaddendFL}{} %DIF PREAMBLE
\providecommand{\DIFdelbeginFL}{} %DIF PREAMBLE
\providecommand{\DIFdelendFL}{} %DIF PREAMBLE
%DIF LISTINGS PREAMBLE %DIF PREAMBLE
\RequirePackage{listings} %DIF PREAMBLE
\RequirePackage{color} %DIF PREAMBLE
\lstdefinelanguage{DIFcode}{ %DIF PREAMBLE
%DIF DIFCODE_UNDERLINE %DIF PREAMBLE
  moredelim=[il][\color{red}\sout]{\%DIF\ <\ }, %DIF PREAMBLE
  moredelim=[il][\color{blue}\uwave]{\%DIF\ >\ } %DIF PREAMBLE
} %DIF PREAMBLE
\lstdefinestyle{DIFverbatimstyle}{ %DIF PREAMBLE
    language=DIFcode, %DIF PREAMBLE
    basicstyle=\ttfamily, %DIF PREAMBLE
    columns=fullflexible, %DIF PREAMBLE
    keepspaces=true %DIF PREAMBLE
} %DIF PREAMBLE
\lstnewenvironment{DIFverbatim}{\lstset{style=DIFverbatimstyle}}{} %DIF PREAMBLE
\lstnewenvironment{DIFverbatim*}{\lstset{style=DIFverbatimstyle,showspaces=true}}{} %DIF PREAMBLE
%DIF END PREAMBLE EXTENSION ADDED BY LATEXDIFF

\begin{document}
\DIFaddbegin 

\begin{theorem}\label{thm:mass}
\DIFadd{We have 
    }\begin{equation}\DIFadd{\label{eq:mass_energy}
        E = mc^2
    }\end{equation}   
\end{theorem}

\DIFaddend Two remarks on the marvelous formula. 
 \DIFdelbegin %DIFDELCMD < 

%DIFDELCMD < %%%
\begin{displaymath}\DIFdel{\label{eq:mass_energy}
    E = mc^2
}\end{displaymath}%DIFAUXCMD
%DIFDELCMD <  %%%
\DIFdelend\end{document}

如您所见，问题在于\label包含在 的范围内。我尝试按照建议\DIFdel添加选项--exclude-safecmd=label这里，但这没有帮助。我该如何避免这个问题？

更新

我正在使用命令

latexdiff old.tex new.tex > diff.tex

使用 LATEXDIFF 1.3.1.1（Algorithm::Diff 1.15，Perl v5.30.1）。

答案1

您的 diff 文件不完整，如果我运行，latex diff old.tex new.tex我会得到一个不同的格式，但不会出错，所以很难测试，但我认为如果您的 preampbe 有

\providecommand{\DIFdel}[1]{{\protect\color{red}\sout{#1}}}                      %DIF PREAMBLE

您可以将其更改为

\providecommand{\DIFdel}[1]{{\def\label##1{}\protect\color{red}\sout{#1}}}                      %DIF PREAMBLE

禁用已删除区域中的标签。

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