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[Jürgen Spitzmüller]

Am Montag, dem 14.10.2024 um 18:20 +0200 schrieb Jean-Marc Lasgouttes:
> Looking at that, I discover that we do not change case correctly, 
> anyway. We should do that relative to the current language.
> 
> The main example I know about that is i in Turkish.

I am not sure whether looking into QLocale::toUpper() helps which says
that

"If Qt Core is using the ICU libraries, they will be used to perform
the transformation according to the rules of the current locale.
Otherwise the conversion may be done in a platform-dependent manner,
with QString::toUpper() as a generic fallback."

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Jürgen