Created attachment 136244 [details] Patch to kcms/keyboard/tastenbrett/key.cpp In the keyboard preview, most diacritics from the internal QHash<unsigned long, char> deadMap don't show up, since their value doesn't fit on a char. On my system, non-spacing diacritics don't show up after fixing that. Unicode recommends applying them to NBSP to exhibit them in isolation. However, doing that, I get the diacritic applied to what appears to be the replacement character (the enclosed interrogation thingie). Also "_" doesn't appear, since it is turned to a blank by the logic to turn "Control_L" to "Control L".
The patch included in #1 also changes to handakuten from its non-spacing mark to its spacing symbol variant for good measure.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/378
Git commit a84979bc5936e90e4d69b40907df6c6fb2e3a013 by Harald Sitter, on behalf of Luis Javier Merino Morán. Committed on 23/03/2021 at 13:22. Pushed by sitter into branch 'master'. [kcms/keyboard] tastenbrett: fix diacritics display in keyboard preview In the keyboard preview, most diacritics from the internal QHash<unsigned long, char> deadMap don't show up, since their values don't fit on a char. On my system, non-spacing diacritics still don't show up after fixing that. Unicode recommends applying them to NBSP to exhibit them in isolation. However, doing that, I get the diacritic applied to what appears to be the replacement character (the enclosed interrogation thingie). So apply them to a SPACE character (not recommended since Unicode 4.1). While we're at it, change the handakuten from its non-spacing mark to its spacing symbol variant for good measure. Also "_" doesn't appear, since it is turned to a blank by the logic to turn "Control_L" to "Control L". M +22 -4 kcms/keyboard/tastenbrett/key.cpp https://invent.kde.org/plasma/plasma-desktop/commit/a84979bc5936e90e4d69b40907df6c6fb2e3a013
*** Bug 436523 has been marked as a duplicate of this bug. ***