带有撇号的软件包列表和 Perl 文档

Question

我有时会在 Perl 使用子文档中编写普通的英语散文，例如

 --[no]alias    [don't] use the alias list in the ini file (default noalias)

问题在于单个撇号似乎会扰乱列表包。一个简短的例子：

\documentclass[article]{memoir}
\usepackage{listings}
\lstset{language=Perl,stringstyle=\slshape}

\begin{document}
\begin{lstlisting}
my $commentA =   "Please, don't do this";
my $commentB =   "But do this";

print <<HERE;
Please, don't do this
But do this
HERE

my $commentC =   "Please, don't do this";
my $commentD =   "But do this";
\end{lstlisting}
\end{document}

结果（使用 MiKTEX/TeXstudio）

commentA 中的撇号被忽略，而此处文档中的撇号似乎被解释为开头的引号。

我尝试过避开 here 终止符，但无济于事。有什么建议吗（除了避免在 here 文档中使用撇号）？

Answer 1

您可以morestring在此处添加这些语句。使用该s选项，您可以有一对分隔符，尽管这在文档中并不十分清楚：

\documentclass[article]{memoir}
\usepackage{listings}
\lstset{language=Perl,stringstyle=\slshape}

\begin{document}
\begin{lstlisting}[morestring={[s]{<<HERE;}{HERE}}]
my $commentA =   "Please, don't do this";
my $commentB =   "But do this";

print <<HERE;
Please, don't do this
But do this
HERE

my $commentC =   "Please, don't do this";
my $commentD =   "But do this";
\end{lstlisting}
\end{document}