如何正确排版一组非封闭式引文

Question

我想正确排版（csquotes如果可能的话，使用）以下代码生成的非封闭的红色引号：

\documentclass{book}
\usepackage{csquotes}
\usepackage{xcolor}

\begin{document}
\parskip 10pt
\Large
\thispagestyle{empty}

\textbf{\color{red}{`` \hskip -3pt ` \hskip -3pt ``My friend,'' he asked, ``how may I properly typeset (i.e., without the negative hskips) the two sets of quotations in red?''}}

\vskip 5pt

\textbf{\color{red}{`` \hskip -3pt ` \hskip -3pt ``This is the second of the two sets.''}}

\vskip 5pt

\textbf{\enquote{\enquote{This nested and closed set of quotations is however, properly typeset, I think.}}}
\end{document}

我无法正确排版红色的引号，因为csquotes它们没有闭合——所以我用一些\hskips 强制排版，以便给出我希望输出的样子。我相信最后一组引号（黑色）排版正确。

如果有人能向我展示如何正确排版红色引文而不费力，我将不胜感激。

Answer 1

更新添加一些内部空间。

定义新的样式，例如

%% *********************************************** added
%%  Some horizontal spacing
\newcommand{\innerspace}{\hskip0.3em}  % set inner spaces in em units

\DeclareQuoteStyle[noclosed]{dblquote}
{{\textquotedblleft\innerspace\textquoteleft\innerspace}}  %opening outer mark
{} %closing outer mark
[0.05em]
{\textquotedblleft}     %opening inner mark
{\textquotedblright}    %closing inner mark

%% ***********************************************

使用命令\innerspace设置引号之间的内部间距：\hskip<len>。（使用em单位！）

% !TeX TS-program = pdflatex

\documentclass{book}
\usepackage{csquotes}
\usepackage{xcolor}
\usepackage[T1]{fontenc} % only if using  pdflatex

%% *********************************************** added
%%  Some horizontal spacing
\newcommand{\innerspace}{\hskip0.3em}  % set inner spaces in em units   

\DeclareQuoteStyle[noclosed]{dblquote}
{{\textquotedblleft\innerspace\textquoteleft\innerspace}}  %opening outer mark
{} %closing outer mark
[0.05em]
{\textquotedblleft}     %opening inner mark
{\textquotedblright}    %closing inner mark

%% ***********************************************

\begin{document}
\parskip 10pt
\Large
\thispagestyle{empty}

\textbf{\enquote{\enquote{This nested and closed set of quotations is however, properly typeset, I think.}}}


{{`` \hskip -3pt ` \hskip -3pt ``My friend,'' he asked, ``how may I properly typeset (i.e., without the negative hskips) the two sets of quotations in red?''}}

\vskip 5pt

{{`` \hskip -3pt ` \hskip -3pt ``This is the second of the two sets.''}}

{\bfseries\large With the new quote style}

\setquotestyle[noclosed]{dblquote} % use the new style <<<<
\enquote{%
    \enquote{My friend,} he asked, \enquote{how may I properly typeset (i.e., without the negative hskips) the two sets of quotations in red?}
}   

\enquote{%
\enquote{This is the second of the two sets.}
}   
    
\end{document}