枚举问题

Question

我正在使用enumerate（与包一起enumitem）并想要制作如下例所示的列表。

Here is the first list: 
     1. Item 1.
     2. Item 2.
etc. 

Here is the second list: 
    (i) Item 1.
   (ii) Item 2.
  (iii) Item 3. This item is longer, to show how text should be aligned when it
        wraps after the end of a line. 

这是 MWE。设置labelindent可实现所需的文本换行，但项目不会对齐。设置itemindent可对齐项目，但会使文本换行混乱。

\documentclass{article}
\usepackage{enumitem}

\begin{document}

\noindent First the result by setting ``labelindent". Here is the first list: 
\begin{enumerate}[leftmargin=*, labelsep=1.0em, labelindent=\parindent, 
itemsep=0.0em, topsep=0.5em, label=\arabic*.]
    \item Item 1.
    \item Item 2.
\end{enumerate}
Here is the second list: 
\begin{enumerate}[leftmargin=*, labelsep=1.0em, labelindent=\parindent, 
itemsep=0.0em, topsep=0.5em, label=(\roman*)]
    \item Item 1.
    \item Item 2. 
    \item Item 3. This item is longer, to show how text should be aligned when it 
    wraps after the end of a line. 
\end{enumerate}
Notice how the items in the two lists are not the same distance from the left 
margin. 

Now the solution with by setting ``itemindent". Here is the first list: 
\begin{enumerate}[labelsep=1.0em, itemindent=\parindent, itemsep=0.0em, 
topsep=0.5em]
    \item Item 1.
    \item Item 2.
\end{enumerate}
Here is the second list: 
\begin{enumerate}[labelsep=1.0em, itemindent=\parindent, itemsep=0.0em, 
topsep=0.5em, label=(\roman*)]
    \item Item 1.
    \item Item 2. 
    \item Item 3. This item is longer, to show how text should be aligned when it 
    wraps after the end of a line. 
\end{enumerate}
Notice how the text in the various items is the same distance from the left margin, except 
in the last line of the    last item. 

\end{document}

Answer 1

我认为的使用widest*=somenumber应该更好，结合特殊的列表克隆。

\documentclass{article}
\usepackage{enumitem}

\begin{document}
\def\widestnumber{25}

\newlist{mylist}{enumerate}{1}
\setlist[mylist,1]{   
  leftmargin=40pt,
  labelsep=1.0em, %labelindent=\parindent, 
  itemsep=0.0em, 
  topsep=0.5em, 
  label=\arabic*.,
  widest*=\widestnumber}


\noindent First the result by setting "labelindent". Here is the first list: 
\begin{mylist}
    \item Item 1.
    \item Item 2.
\end{mylist}
Here is the second list: 
\begin{mylist}[label=(\roman*)]
    \item Item 1.
    \item Item 2. 
    \item Item 3. This item is longer, to show how text should be aligned when it 
    wraps after the end of a line. 
\end{mylist}
Notice how the items in the two lists are not the same distance from the left 
margin. 
\end{document}