tcolorbox 中的行号，“笔记本”/答案行样式

Question

我想调整答案这里在左侧（框内）插入行号——就像tcolorbox包裹中的清单一样。

我也尝试在命令中添加可选的行数参数newtcolorbox，但是没有起到作用，最后只能使用粗制滥造的手册vspace。

\documentclass{article}
\usepackage[most]{tcolorbox}
\usepackage{lmodern}
\usepackage{blindtext}
\usepackage{calc}

\newtcolorbox{notebook}{
    enhanced,
    breakable,
    colback=green!10,
    colframe=green!65!black,
    left=.7in,
    underlay={%
        \begin{tcbclipinterior}
        %\shade[inner color=green!80!yellow,outer color=yellow!10!white]
%(interior.north west) circle (2cm);
        \draw[help lines, ystep=\baselineskip, xstep=\linewidth, 
            shift={(interior.north west)}](interior.south west) grid (interior.north east);
        \draw[help lines] ([xshift=.5in]interior.north west)--
            ([xshift=.5in]interior.south west);
        \end{tcbclipinterior}}
    }

\usepackage{lineno}


\begin{document}
\blindtext[1]
\begin{notebook}
\blindtext[3]
\end{notebook}

\begin{notebook}
\vspace{20\baselineskip}
\linenumbers
\end{notebook}


\end{document}

Answer 1

可能我误解了你的问题，但你可以添加一个可选参数，使用插入空行before upper。

\documentclass{article}
\usepackage[most]{tcolorbox}
\usepackage{lmodern}
\usepackage{blindtext}
\usepackage{calc}

\newtcolorbox{notebook}[1][0]{
    enhanced,
    breakable,
    colback=green!10,
    colframe=green!65!black,
    left=.7in,
    underlay={%
        \begin{tcbclipinterior}
        %\shade[inner color=green!80!yellow,outer color=yellow!10!white]
%(interior.north west) circle (2cm);
        \draw[help lines, ystep=\baselineskip, xstep=\linewidth, 
            shift={(interior.north west)}](interior.south west) grid (interior.north east);
        \draw[help lines] ([xshift=.5in]interior.north west)--
            ([xshift=.5in]interior.south west);
        \end{tcbclipinterior}},
    before upper=\vspace{#1\baselineskip}   
    }

\usepackage{lineno}


\begin{document}
\blindtext[1]
\begin{notebook}
\blindtext[3]
\end{notebook}

\begin{notebook}[20]

\end{notebook}
\end{document}

附录：至于你的额外要求：以下是类似这样的内容（部分灵感来自这个问题）。

\documentclass{article}
\usepackage[most]{tcolorbox}
\usepackage{lmodern}
\usepackage{blindtext}
\usepackage{calc}

\newtcolorbox{notebook}[1][0]{
    enhanced,
    breakable,
    colback=green!10,
    colframe=green!65!black,
    left=.7in,
    underlay={%
        \begin{tcbclipinterior}
        %\shade[inner color=green!80!yellow,outer color=yellow!10!white]
%(interior.north west) circle (2cm);
        \draw[help lines, ystep=\baselineskip, xstep=\linewidth, 
            shift={(interior.north west)}](interior.south west) grid (interior.north east);
        \draw[help lines] ([xshift=.5in]interior.north west)--
            ([xshift=.5in]interior.south west);
        \end{tcbclipinterior}},
    before upper={\ifnum#1>0
    \begin{internallinenumbers}\setcounter{linenumber}{1}
    \foreach \X in {1,...,#1}
    {~\par}
    \end{internallinenumbers}
    \fi
    }}

\usepackage{lineno}


\begin{document}
\blindtext[1]
\begin{notebook}
\blindtext[3]
\end{notebook}

\begin{notebook}[20]
\end{notebook}

\begin{notebook}[20]
\end{notebook}

\end{document}