在 pdf 中突出显示标点符号

Question

我想自动突出显示文档中的所有标点符号，最好使用不同的背景颜色，或者通过更改标点符号的颜色。

目的主要是让我检查句子的长度和总体风格，这样我就不会担心等式和/或标题中的点。

有没有一种简单的方法可以让我“重新定义”一个点为 \color{red}{.} 从而将所有点变成红色？

使用下面接受的答案的解决方案（因为我无法在评论中使代码工作）

\usepackage{xcolor}
\usepackage{stringstrings}

\let\svcomma,\let\svperiod.\let\svsemicolon;
\catcode`,=\active\catcode`.=\active \catcode`;=\active %
\newcommand\colorpuncton[1][red]{%
% \catcode`,=\active\def,{\colorbox{#1}{\svcomma}}%
  \catcode`.=\active\def.{\colorbox{blue!30}{\svperiod}}%
  \catcode`;=\active\def;{\colorbox{green!30}{\svsemicolon}}%
}

\def\colorpunctoff{%
\catcode`,=12\let ,\svcomma%
\catcode`.=12\let .\svperiod%
\catcode`;=12\let ;\svperiod%
 }

\catcode`,=12 \catcode`.=12 \catcode`;=12 %

\parskip 1em

\let\oldfigure\figure% Store old figure environment start
\let\endoldfigure\endfigure% Store old figure environment end
\renewenvironment{figure}[1][htbp]% Redefine figure
 {\colorpunctoff\oldfigure[#1]}
 {\endoldfigure\colorpuncton}
\let\oldtable\table% 
\let\endoldtable\endtable% 
\renewenvironment{table}[1][htbp]% 
 {\colorpunctoff\oldtable[#1]}
 {\endoldtable\colorpuncton}

 \let\oldSI\SI
 \renewcommand{\SI}[2]{\colorpunctoff\oldSI{#1}{#2}\colorpuncton}

Answer 1

根据我的回答更改大写字母的颜色。关闭此功能可能允许在需要时以正常方式使用句号之类的功能。

已编辑，允许简单地暂停/更新方法，如果必须调用其他需要标点符号的宏，例如\cite。已重新编辑，允许在单个宏调用中暂停/更新，\Xcite{}。

\documentclass{article}
\usepackage{xcolor}
\usepackage{stringstrings}

\let\svcomma,\let\svperiod.\let\svsemicolon;
\catcode`,=\active \catcode`.=\active \catcode`;=\active %
\newcommand\colorpunctinit[1][red]{\colorpuncton%
  \def,{\colorbox{#1}{\svcomma}}%
  \def.{\colorbox{#1}{\svperiod}}%
  \def;{\colorbox{#1}{\svsemicolon}}%
}
\newcommand\colorpuncton{%
  \catcode`,=\active %
  \catcode`.=\active %
  \catcode`;=\active %
}
\def\colorpunctoff{%
  \catcode`,=12 %
  \catcode`.=12 %
  \catcode`;=12 %
}
\newcommand\coloron[2]{%
  \if\svcomma#1\catcode`,=\active\def,{\colorbox{#2}{\svcomma}}\else%
  \if\svperiod#1\catcode`.=\active\def.{\colorbox{#2}{\svperiod}}\else%
  \if\svsemicolon#1\catcode`;=\active\def;{\colorbox{#2}{\svsemicolon}}\else%
\fi\fi\fi%
}
\newcommand\coloroff[1]{\catcode`#1=12%
  \edef\tmp{\detokenize{#1}}%
  \caselower[q]{\tmp}%
  \expandafter\let\expandafter#1\csname sv\thestring\endcsname%
}
\catcode`,=12 \catcode`.=12 \catcode`;=12 %

\parskip 1em

\newcommand\Xcite{\colorpunctoff\citeX}
\newcommand\citeX[1]{\cite{#1}\colorpuncton}

\begin{document}
\colorpunctinit[cyan]
\verb|\colorpunctinit[color]| will change all punctuation to the specified color,\\
here cyan, and should be done to initialize this process.\\
(\verb|But not commas; for some reason, in \verbatim.|)

\colorpunctoff
\verb|\colorpunctoff| will, indeed, suspend the procedure.

\coloron{,}{red}\coloron{.}{blue!30}\coloron{;}{green!30}
\verb|\coloron{<punctuation>}{color}| will turn an inactive symbol active with the
specified color, done here  with red, to ",", blue!30 to the ``.'' and green!30 to the
``;''.

\coloroff{,}
\verb|\coloroff{<punctuation>}|, done here to the comma,
will restore that letter to the original LaTeX
setting; the others remain active.

\coloron{,}{cyan!40}
To change the color an already active symbol, one must first turn the color off;
then set the color anew, as done here to the comma ``,''.

To use \verb|\cite|, one must employ \verb|\Xcite{A, B}|
as in \Xcite{A, B}. The punctuation, it is still colored; yes it is.
\end{document}

Answer 2

您可以激活句点并为其赋予定义。但您应该知道句点通常是语法（例如数字）的一部分，如果句点不符合语法要求，您可能会得到非常可怕的错误。因此在这种情况下，您必须再次更改 catcode。

\documentclass{article}
\usepackage{xcolor}
\usepackage{tikz}
\begin{document}
\catcode`\.=13
\def.{\colorbox{red}{\string.}}

a horse. a horse. a horse.

\catcode`\.=12 %disable the colored period
\begin{tikzpicture}
\draw(0.5,0.5)--(1,1);
\end{tikzpicture}
\catcode`\.=13

a kingdom.

\end{document}