Can I simplify this to some sort of logic so it scales better?

6 Jun 2022

      I have this:

\definemode[EN,FR,RU,PT][keep]
\doifmodeelse{EN}
  {
    \disablemode[FR]
    \disablemode[RU]
    \disablemode[PT]
  }
  {
    \doifmodeelse{FR}
    {
      \disablemode[EN]
      \disablemode[RU]
      \disablemode[PT]
    }
    {
      \doifmodeelse{RU}
      {
        \disablemode[EN]
        \disablemode[FR]
        \disablemode[PT]
      }
      {
        \doifmodeelse{PT}
        {
          \disablemode[EN]
          \disablemode[FR]
          \disablemode[RU]
        }
        {
          \enablemode[EN]
        }
      }
    }
  }

But for every language added this becomes more and more complex. I was wondering what would be a good approach to simplify it. 

I want to make sure that one and only one of these modes is active and that if no mode is entered on the command line the mode is EN.

Gerben Wierda (LinkedIn https://www.linkedin.com/in/gerbenwierda)
R&A IT Strategy https://ea.rna.nl/ (main site)
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Gerben Wierda

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