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tcolorbox 禁用覆盖节点中的重复文本

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tcolorbox 禁用覆盖节点中的重复文本

在以下 MWE 中（构建自https://tex.stackexchange.com/a/170767/69378）我已经证明，覆盖tcolorbox节点中的标题文本会在分页符之间重复。

我对照每个配置的参数检查了手册，并尝试注释掉那些我认为可能是罪魁祸首的参数，但总是留下这个重复的标题。通常这是一个很好的功能，但我希望能够有选择地关闭它，当它tcolorbox很小并且重复这个标题只会增加混乱时。

是什么导致这种重复？

\documentclass{article}
\usepackage[left=60pt,top=60pt,right=60pt,bottom=60pt]{geometry}
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{kantlipsum}
\usepackage{enumitem}
\usepackage[many]{tcolorbox}

\setitemize{nolistsep,labelsep=1ex,leftmargin=*}

%% colors---
\definecolor{lightgray}{gray}{0.8}

%%items--
\newlist{items}{description}{1}
\setlist[items]{align=right,font=\normalfont, leftmargin=1.8in,style=nextline,labelsep=1em,}

%% leftrulebox---
\tcbuselibrary{skins,breakable}
\newtcolorbox{leftrulebox}[1][]{
    colback=white,
    boxrule=10pt
    left=0.5ex,
    top=0pt,
    arc=0pt,
    outer arc=0pt,
    enlarge left by=1.8cm,
    enlarge right by=-\dimexpr1.8cm+\parindent\relax,
    right=\dimexpr1.8cm+\parindent\relax,
    leftrule=1pt,
    rightrule=0pt,
    toprule=0pt,
    bottomrule=0pt,
    breakable,
    nobeforeafter,
    enhanced jigsaw,
    overlay={
      \node[anchor=north east,inner ysep=0pt,align=right,text width=1.8cm] 
        at ([yshift=-0.55ex]frame.north west) {\hfill#1};
    },
    before=\vskip2\itemsep\noindent
  }

\begin{document}

\section*{Sample}

\begin{leftrulebox}[Text Title]
\kant[1]
\kant[2]
\kant[3]
\kant[4]
\kant[5]
\end{leftrulebox}

\end{document}

**更新：MWE 2 用于间歇性解决方案**

\documentclass{article}
\usepackage[left=60pt,top=60pt,right=60pt,bottom=60pt]{geometry}
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{kantlipsum}
\usepackage{enumitem}
\usepackage[many]{tcolorbox}

\setitemize{nolistsep,labelsep=1ex,leftmargin=*}

%% colors---
\definecolor{lightgray}{gray}{0.8}

%%items--
\newlist{items}{description}{1}
\setlist[items]{align=right,font=\normalfont, leftmargin=1.8in,style=nextline,labelsep=1em,}

%% leftrulebox---
\tcbuselibrary{skins,breakable}
\newtcolorbox{leftrulebox}[1][]{
    colback=white,
    boxrule=10pt
    left=0.5ex,
    top=0pt,
    arc=0pt,
    outer arc=0pt,
    enlarge left by=1.8cm,
    enlarge right by=-\dimexpr1.8cm+\parindent\relax,
    right=\dimexpr1.8cm+\parindent\relax,
    leftrule=1pt,
    rightrule=0pt,
    toprule=0pt,
    bottomrule=0pt,
    breakable,
    nobeforeafter,
    enhanced jigsaw,
    %overlay={
    %   \node[anchor=north east,inner ysep=0pt,align=right,text width=2.6cm] 
    %   at ([yshift=0.5ex]frame.north west) {\hfill#1};%-0.55 hold yshift
    %},
    extras first={
        overlay={%
            \node[anchor=north east,inner ysep=0pt,align=right,text width=2.6cm] 
            at ([yshift=-0.5ex]frame.north west) {\hfill#1};
        },
    },
    extras middle and last={%
        overlay={%
            \node[anchor=north east,inner ysep=0pt,align=right,text width=2.6cm] 
            at ([yshift=-0.5ex]frame.north west) {\hfill};
        },
    },
    %before=\vskip2\itemsep\noindent
    before=\vskip\itemsep\noindent
  }

\begin{document}

\section*{Sample}

\begin{leftrulebox}[Text Title 1]
\kant[1]
\end{leftrulebox}

\begin{leftrulebox}[Text Title 2]
    \kant[2]
\kant[3]
\kant[4]
\kant[5]
\end{leftrulebox}

\begin{leftrulebox}[Text Title 3]
    \kant[3]
    \kant[4]
    \kant[5]
\end{leftrulebox}

\end{document}

答案1

恕我直言，您正在寻找overlay unbroken and first钥匙：

\documentclass{article}
\usepackage[left=60pt,top=60pt,right=60pt,bottom=60pt]{geometry}
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{kantlipsum}
\usepackage{enumitem}
\usepackage[many]{tcolorbox}

\setitemize{nolistsep,labelsep=1ex,leftmargin=*}

%% colors---
\definecolor{lightgray}{gray}{0.8}

%%items--
\newlist{items}{description}{1}
\setlist[items]{align=right,font=\normalfont, leftmargin=1.8in,style=nextline,labelsep=1em,}

%% leftrulebox---
\tcbuselibrary{skins,breakable}
\newtcolorbox{leftrulebox}[1][]{
    colback=white,
    boxrule=10pt
    left=0.5ex,
    top=0pt,
    arc=0pt,
    outer arc=0pt,
    enlarge left by=1.8cm,
    enlarge right by=-\dimexpr1.8cm+\parindent\relax,
    right=\dimexpr1.8cm+\parindent\relax,
    leftrule=1pt,
    rightrule=0pt,
    toprule=0pt,
    bottomrule=0pt,
    breakable,
    nobeforeafter,
    enhanced jigsaw,
    overlay unbroken and first={
       \node[anchor=north east,inner ysep=0pt,align=right,text width=2.6cm]
       at ([yshift=0.5ex]frame.north west) {\hfill#1};%-0.55 hold yshift
    },
    %before=\vskip2\itemsep\noindent
    before=\vskip\itemsep\noindent
  }

\begin{document}

\section*{Sample}

\begin{leftrulebox}[Text Title 1]
\kant[1]
\end{leftrulebox}

\begin{leftrulebox}[Text Title 2]
    \kant[2]
\kant[3]
\kant[4]
\kant[5]
\end{leftrulebox}

\begin{leftrulebox}[Text Title 3]
    \kant[3]
    \kant[4]
    \kant[5]
\end{leftrulebox}

\end{document}

enter image description here

答案2

可以尝试使用extras first和extras middle and last选项为第一个框（第一个断开的框）提供特定的覆盖（带有文本），而#1对于断开序列中的中间和最后一个框则保留不带覆盖。

\documentclass{article}
\usepackage[left=60pt,top=60pt,right=60pt,bottom=60pt]{geometry}
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{kantlipsum}
\usepackage{enumitem}
\usepackage[many]{tcolorbox}

\setitemize{nolistsep,labelsep=1ex,leftmargin=*}

%% colors---
\definecolor{lightgray}{gray}{0.8}

%%items--
\newlist{items}{description}{1}
\setlist[items]{align=right,font=\normalfont, leftmargin=1.8in,style=nextline,labelsep=1em,}

%% leftrulebox---
\tcbuselibrary{skins,breakable}
\newtcolorbox{leftrulebox}[1][]{
    colback=white,
    boxrule=10pt
    left=0.5ex,
    top=0pt,
    arc=0pt,
    outer arc=0pt,
    enlarge left by=1.8cm,
    enlarge right by=-\dimexpr1.8cm+\parindent\relax,
    right=\dimexpr1.8cm+\parindent\relax,
    leftrule=1pt,
    rightrule=0pt,
    toprule=0pt,
    bottomrule=0pt,
    breakable,
    nobeforeafter,
    enhanced jigsaw,
    extras first={
    overlay={%
      \node[anchor=north east,inner ysep=0pt,align=right,text width=1.8cm] 
        at ([yshift=-0.55ex]frame.north west) {\hfill#1};
    },
    },
    extras middle and last={%
      overlay={%
        \node[anchor=north east,inner ysep=0pt,align=right,text width=1.8cm] 
        at ([yshift=-0.55ex]frame.north west) {\hfill};
      },
    },
    before=\vskip2\itemsep\noindent
  }

\begin{document}

\section*{Sample}

\begin{leftrulebox}[Text Title]
\kant[1]
\kant[2]
\kant[3]
\kant[4]
\kant[5]
\end{leftrulebox}

\end{document}

enter image description here

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