Language detection and condition

Question

My problem is quite simple. I use the babel package and depending on the language I want to display something with respect to the active language. Therefore I use the package xstring. My code is the following

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}

This does not work. Anyone an idea?

Thanks in advance.

Willi · Answer

Finally I found that using

iflanguage{english}{this is english}

iflanguage{french}{this is french}

is far more simple without using the xstring package.

egreg · Answer

You have to use IfStrEq*, because the string returned by languagename consists of category code 12 characters.

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}

Scotty · Answer

The minimal example with the iflang solution of Javier Bezos would be:
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}

Language detection and condition

3 Answers

Add your own answers!

Ask a Question