如何在 \IfLanguageName 中使用 \verb - 错误 \verb 以行尾结束。}{}

Question

我想\verb在里面使用\IfLanguageName。但我收到错误消息\verb ended by end of line. ...ame{english}{... \verb| echo Hello | ...}{}。我想同时只显示一种语言。

\documentclass{article}

\usepackage{iflang}
\begin{document}
\setlanguage{english}

\IfLanguageName{swedish}{... \verb| echo Hello | ...}{}
\IfLanguageName{english}{... \verb| echo Hello | ...}{}

\end{document}

Answer 1

你可以定义一个环境。通过定义与我们所得到的可管理语法\Stop相同。\fi

\documentclass{article}
\usepackage[swedish,english]{babel}

\usepackage{iflang}

\makeatletter
\newenvironment{languageswitch}
 {\expandafter\let\csname Start@\languagename\endcsname\@empty}
 {\ignorespacesafterend}
\newcommand{\Start}[1]{%
  \@ifundefined{Start@#1}{\iffalse}{\iftrue\ignorespaces}%
}
\let\Stop\fi
\makeatother

\begin{document}

\section{English}

\begin{languageswitch}
\Start{swedish}
... \verb| echo svenska | ...
\Stop
\Start{english}
... \verb| echo English | ...
\Stop
\end{languageswitch}

\section{Swedish}

\selectlanguage{swedish}

\begin{languageswitch}
\Start{swedish}
... \verb| echo svenska | ...
\Stop
\Start{english}
... \verb| echo English | ...
\Stop
\end{languageswitch}

\end{document}