如何在证明环境中使用枚举列表的某些选项？

Question

下面的源代码解释并说明了这个问题：如何修改propertylist以允许它使用[labelindent=0pt]列表开始时的选项和[resume]恢复列表时的选项。

\documentclass{article}
\usepackage{amsthm}

\usepackage{enumitem}
\newlist{proplis}{enumerate}{1}
\newenvironment{propertylist}[1]{%
  \setlist[proplis,1]{%
  wide,leftmargin=*,label=\upshape(#1\arabic*)}\begin{proplis}%
  \upshape}
  {\end{proplis}}

\newcommand*{\textsfdot}[1]{\textsf{#1.}}
\newlist{pfpartsperiod}{description}{1}
\setlist[pfpartsperiod,1]{%
  font=\normalfont,
  itemindent=0pt,
  wide,
  itemsep=0pt,topsep=2pt,
  format={\normalfont\textsfdot}
}
\begin{document}

This is how \verb!propertylist! works:
\begin{propertylist}{P}
\item Property one.
\item Property two.
\end{propertylist}

Options \verb!labelindent=0pt! and \verb!resume! for an \verb!enumitem! lists prevents extra space after ``\emph{Proof.} '' as in:
\begin{proof}
%
\begin{pfpartsperiod}[labelindent=0pt]
\item[Sufficiency] The condition suffices because of thi.
\end{pfpartsperiod}
\begin{pfpartsperiod}[resume]
\item[Necessity] The condition is also necessary since that.
\end{pfpartsperiod}
%
\end{proof}
%
\noindent\textbf{How can these options be used}, instead, with \verb!propertylist!, as in the following?
\begin{proof}
%
\begin{propertylist}{P}[labelindent=0pt]
\item Property one.
\end{propertylist}
\begin{propertylist}{P}[resume]
\item Property two.
\end{propertylist}
%
\end{proof}

\end{document}

Answer 1

您希望\begin{propertylist}{P}能够将括号中的参数传递给proplis，但这只有\begin{proplis}在最后的定义中的项目。\upshape相反，您有。

但实际上您必须使用“内部”形式\proplis才能resume工作，因为否则它无法处理要从中恢复的正确环境名称。

\documentclass{article}
\usepackage{amsthm}
\usepackage{enumitem}

\newlist{proplis}{enumerate}{1}
\newenvironment{propertylist}[1]{%
  \setlist[proplis,1]{%
    wide,
    leftmargin=*,
    label=\upshape(#1\arabic*),
  }%
  \upshape
  \proplis}
  {\endproplis}

\newcommand*{\textsfdot}[1]{\textsf{#1.}}
\newlist{pfpartsperiod}{description}{1}
\setlist[pfpartsperiod,1]{%
  font=\normalfont,
  itemindent=0pt,
  wide,
  itemsep=0pt,topsep=2pt,
  format={\normalfont\textsfdot}
}
\begin{document}

This is how \verb!propertylist! works:
\begin{propertylist}{P}
\item Property one.
\item Property two.
\end{propertylist}

Options \verb!labelindent=0pt! and \verb!resume! for an \verb!enumitem! 
lists prevents extra space after ``\emph{Proof.} '' as in:
\begin{proof}
%
\begin{pfpartsperiod}[labelindent=0pt]
\item[Sufficiency] The condition suffices because of thi.
\end{pfpartsperiod}
\begin{pfpartsperiod}[resume]
\item[Necessity] The condition is also necessary since that.\qedhere
\end{pfpartsperiod}
%
\end{proof}
%
\noindent\textbf{How can these options be used}, instead, with 
\verb!propertylist!, as in the following?
\begin{proof}
%
\begin{propertylist}{P}[labelindent=0pt]
\item Property one.
\end{propertylist}
\begin{propertylist}{P}[resume]
\item Property two.\qedhere
\end{propertylist}
%
\end{proof}

\end{document}

我使用它\qedhere是因为我受不了悬垂的墓碑。