表格中文本的垂直定位

Question

我在将文本定位到表格单元格的第一行时遇到了问题。如果有人能帮助我解决这个问题，我将不胜感激。

代码如下：

\documentclass{article}

\usepackage{array}

\newcolumntype{L}[1]{>{\raggedright\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{C}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcommand{\tabitem}{~~\llap{\textbullet}~~}
\begin{document}

\begin{tabular}{|  L{3cm} | L{3cm} | C{3cm} | R{3cm} |}

\hline

foo &

\tabitem A cell with text that wraps around\newline

\tabitem is raggedright and allows 
    manual line breaks &

\tabitem A cell with text that wraps around 

&
A cell with text that wraps around, is raggedleft and allows 
\newline
    manual line breaks \\ 
    \hline   
\end{tabular}


\end{document}


\end{document}

该表现在如下所示：

预先感谢您的帮助

Answer 1

使用p列而不是m让文本从单元格顶部开始。此外，itemize在适当调整参数以适应tabulars 后，可以使用 normal。

\documentclass{article}
\usepackage{enumitem,array}

\newcolumntype{L}[1]{>{\raggedright\let\newline\\\arraybackslash}p{#1}}
\newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash}p{#1}}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash}p{#1}}
\begin{document}

\setlist[itemize]{leftmargin = *, itemsep=-3pt, before=\vspace*{-\dimexpr\baselineskip+\partopsep}, after=\vspace*{\dimexpr-\baselineskip+\partopsep}}

\begin{tabular}{| L{3cm} | L{3cm} | C{3cm} | R{3cm} |}
\hline
foo
&
\begin{itemize}
\item A cell with text that wraps around 
\item is raggedright and allows manual line breaks 
\end{itemize}
&
\begin{itemize}
\item A cell with text that wraps around 
\end{itemize} 
&
A cell with text that wraps around, is raggedleft and allows \newline
manual line breaks \\ \hline   
\end{tabular}

\end{document}