For years KWin has offered modifier-only shortcut handling via an obscure and undocumented method of editing the kwinrc file. Well, no more: in Plasma 6.1, KDE’s shortcut choosers will accept lone modifier keys natively! This makes it much easier to, for example, re-bind what the Meta key does: now you can easily make it open Overview, KRunner, or anything else simply by assigning it directly to that something else. This work required extensive re-plumbing throughout KDE’s software stack and was undertaken by Yifan Zhu, closing multiple Bugzilla tickets in the process—some fairly old. Thanks a lot, Yifan! (Link 1, link 2, link 3, link 4, link 5, and link 6)
This is a companion discussion topic for the original entry at https://pointieststick.com/2024/04/05/this-week-in-kde-real-modifier-only-shortcuts-and-cropping-in-spectacle/