SUMMARY See https://bugs.kde.org/show_bug.cgi?id=407179#c14. Just based on that comment, not tested or anything else. I just wanted to file this bug, so people are aware and it doesn't get forgotten.
Yes, can confirm. In kinfocenter (and systemsettings) copied text contains Russian "ГиБ" instead of "GiB" when clicked on "Copy to clipboard in English" with LANGUAGE=ru_RU For example: Operating System: Manjaro Linux KDE Plasma Version: 5.20.3 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1 Kernel Version: 5.9.6-2-MANJARO OS Type: 64-bit Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz Memory: 15.6 ГиБ of RAM Graphics Processor: Radeon RX 590 Series
I'll mark as confirmed. Also I just had some deeper look. It seems that the `tr()` functions used there do not care about what locale is set in the constructor and thus this (https://invent.kde.org/plasma/kinfocenter/commit/97b66813bcfaeec046fc36dd4f5a8021b2a55264#5aca3766abfc10c651502c19c616a3de8dedbee7_48_47) does not work as intended? https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/src/lib/util/kformatprivate.cpp#L285
One problem is that I don't really know what the locale parameter (https://invent.kde.org/frameworks/kcoreaddons/-/blob/master/src/lib/util/kformatprivate.cpp#L19) was thought for initially. It currently is used for some stuff, but not for things like string localization. So the question would be whether it is intended to use it for that kind of purpose or whether one has to introduce a different parameter for that. Also linking to the tr() documentation as I did not know about that before: https://doc.qt.io/qt-5/qobject.html#tr
*** Bug 480534 has been marked as a duplicate of this bug. ***
Problem still persist with version 6.0.0: ``` Operating System: Fedora Linux 40 KDE Plasma Version: 6.0.3 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernel Version: 6.8.4-300.fc40.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 5700X 8-Core Processor Memory: 31.2 ГиБ of RAM Graphics Processor: NVIDIA GeForce RTX 3070/PCIe/SSE2 Manufacturer: ASUS ``` Note `ГиБ` appears in text.