extragear/graphics/kst-plot in the kde git repo has a completely untranslated GUI. Reason is a missing Messages.sh to extract the translations to a catalog. The code has a lot (382) of i18n() calls and a lot of tr() calls as well. It is no problem to have a Qt-only and a KDE-version of the app (see e.g. Marble), but the translations need to be extracted to two different catalogs (foo.pot and foo_qt.pot). If you need any help please drop me or kde-i18n-doc@kde.org a note. Thanks
Created attachment 84026 [details] A scripts to extract Qt messages Stolen from extragear-pim/trojita. The translation system can be adopted from there as well.
Message extraction somehow works now, but a lot of missing or superfluous messages are in the translation catalogs now. What is missing is a script like l10n-fetch-po-files.py from the trojita repository. I have added such a script locally here, but CMake fails to generate/install *ts/*qm translation catalogs, so kst2 is still completely untranslated in the GUI.
Works now, thanks