语言检测和条件

Question

我的问题很简单。我使用 babel 包，根据语言，我想显示与活动语言相关的内容。因此我使用包xstring。我的代码如下

\documentclass[10pt]{article}
\usepackage{xstring}
\usepackage[french,english]{babel}

\begin{document}
\selectlanguage{french}

\languagename%show the string

\IfStrEq{\languagename}{french}{Yes, it's french!}{No, it's not french!}

\end{document}  

这不管用。有人有主意吗？

提前致谢。

Answer 1

最小示例伊夫兰解决方案哈维尔·贝佐斯将会：

\documentclass[10pt]{article}
\usepackage{iflang}
\usepackage[french,english]{babel}

\begin{document}
    
    \title{%
        \IfLanguageName{french}{Yes, it's french!}{No, it's not french!}%
        
        \selectlanguage{french}%
        \IfLanguageName{french}{Yes, it's french!}{No, it's not french!}%
    }
\end{document}

Answer 2

您必须使用\IfStrEq*，因为返回的字符串\languagename由 12 个字符的类别代码组成。

\documentclass[10pt]{article}
\usepackage{xstring}
\usepackage[french,english]{babel}

\begin{document}

\languagename%show the string

\IfStrEq*{\languagename}{french}{Yes, it's french!}{No, it's not french!}

\selectlanguage{french}

\languagename%show the string

\IfStrEq*{\languagename}{french}{Yes, it's french!}{No, it's not french!}

\end{document}

Answer 3

最后我发现使用

\iflanguage{english}{this is english}

\iflanguage{french}{this is french}

不使用 xstring 包会简单得多。