左对齐标签

Question

我一直在使用 LaTex 来编写我的家谱家族史研究，因为它能够索引、引用图片、表格等。这将是一个大文件，因为我已经有近 1000 页，而我只在树的第一个分支上工作！我一直在努力解决列举内容的问题，需要一些建议。

我用过枚举项包允许我更好地设置枚举，但我无法按我想要的方式格式化它。我有一些深层嵌套的项目，它们的标签可能是 B.10.2.3.2.2.3。

我想将其设置为这些标签左对齐，并且与它们匹配的文本遵循该缩进。我似乎只能使文本全部左对齐，然后标签会挤进页边距并离开页面。

这就是问题：

我怎样才能让“B”在边缘左对齐而不是乱七八糟？提前谢谢您！现在的情况是这样的：

\documentclass[12pt]{book}
\usepackage[letterpaper, portrait, margin=1.0in]{geometry}

\usepackage{enumitem}
\setlistdepth{9}
\newlist{myEnumerate}{enumerate}{9}
\setlist[myEnumerate]{topsep=7pt,itemsep=7pt}
\setlist[myEnumerate,1]{label*=\textbf{\Alph*}., leftmargin=*} % A, B, C
\setlist[myEnumerate,2]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,3]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,4]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,5]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,6]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,7]{label*=\arabic*., leftmargin=0cm} % 1, 2, 3
\setlist[myEnumerate,8]{label*=\arabic*., leftmargin=0cm} 

\begin{document}

\begin{myEnumerate}

\item This is the first item. 
\begin{myEnumerate}
    \item This is the second item. 
    \begin{myEnumerate}
        \item This is the third item. 
        \begin{myEnumerate}
            \item This is the fourth item. 
            \begin{myEnumerate}
                \item This is the fifth item. 
                \begin{myEnumerate}
                    \item This is the sixth item. 
                    \begin{myEnumerate}
                        \item This is the seventh item. 
                        \begin{myEnumerate}
                            \item This is the eighth item. 
                        \end{myEnumerate}   
                    \end{myEnumerate}   
                \end{myEnumerate}   
            \end{myEnumerate}   
        \end{myEnumerate}   
    \end{myEnumerate}   
\end{myEnumerate}   
\end{myEnumerate}
\end{document}

Answer 1

这是我的尝试：

\documentclass[12pt]{book}
\usepackage[letterpaper, portrait, margin=1.0in]{geometry}

\newcommand*\mywidestlabel{M.1.1.1.1.1.1.1.}% adjust here if necessary
\newlength\mylength
\settowidth\mylength{\mywidestlabel}

\usepackage{enumitem}
\setlistdepth{9}
\newlist{myEnumerate}{enumerate}{9}
\setlist[myEnumerate]{topsep=7pt,itemsep=7pt}
\setlist[myEnumerate,1]{label*=\textbf{\Alph*}., align=left, leftmargin=1.0in, labelwidth=\mylength} % A, B, C
\setlist[myEnumerate,2]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,3]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,4]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,5]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,6]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,7]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} % 1, 2, 3
\setlist[myEnumerate,8]{label*=\arabic*., align=left, leftmargin=0pt, labelwidth=\mylength} 

\begin{document}

\begin{myEnumerate}

\item This is the first item. This is the first item. This is the first item. This is the first item. 
\begin{myEnumerate}
    \item This is the second item. This is the second item. This is the second item. This is the second item. 
    \begin{myEnumerate}
        \item This is the third item. This is the third item. This is the third item. This is the third item. 
        \begin{myEnumerate}
            \item This is the fourth item. This is the fourth item. This is the fourth item. This is the fourth item. 
            \begin{myEnumerate}
                \item This is the fifth item. 
                \begin{myEnumerate}
                    \item This is the sixth item. 
                    \begin{myEnumerate}
                        \item This is the seventh item. 
                        \begin{myEnumerate}
                            \item This is the eighth item. This is the eighth item. This is the eighth item. This is the eighth item. 
                        \end{myEnumerate}   
                    \end{myEnumerate}   
                \end{myEnumerate}   
            \end{myEnumerate}   
        \end{myEnumerate}   
    \end{myEnumerate}   
\end{myEnumerate}   
\end{myEnumerate}
\end{document}