Patch to fix ibus-skk absorbing Super modifier keys in Wayland

0003-Forward-Super-Hyper-modified-key-events-to-the-compo.patch

From: Masaki Hara <ackie.h.gmai@gmail.com>
Date: Sat, 27 Jun 2026 18:09:14 +0900
Subject: Forward Super/Hyper modified key events to the compositor

When ibus-skk is the active engine, pressing a Super (Mod4) + letter
combo such as Super+L caused the bare letter to be committed and the
event reported as handled, swallowing the compositor's global shortcuts
(e.g. Super+L to lock the screen).

The modifier masking in process_key_event() stripped the Super/Hyper
bits before handing the event to libskk, so libskk saw a bare letter.
SKK binds nothing to Super/Hyper, so return false (not handled) for any
key event carrying those modifiers, letting IBus forward it to the
compositor.  This also covers the matching key release.

See https://github.com/ibus/ibus/issues/2608

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 src/engine.vala | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/engine.vala b/src/engine.vala
index a55d4ca..0d36bf6 100644
--- a/src/engine.vala
+++ b/src/engine.vala
@@ -418,6 +418,19 @@ class SkkEngine : IBus.Engine {
                                             uint keycode,
                                             uint state)
     {
+        // SKK has no keybinding that uses the Super (Mod4) or Hyper
+        // modifiers, and the masking below would otherwise strip those
+        // bits and let libskk treat e.g. Super+L as a bare "l", which it
+        // commits and reports as handled.  That swallows the compositor's
+        // global shortcuts (e.g. Super+L to lock the screen).  Forward such
+        // events to IBus/the compositor unhandled instead.  This also covers
+        // the matching key release.  See ibus/ibus#2608.
+        if ((state & (IBus.ModifierType.MOD4_MASK |
+                      IBus.ModifierType.SUPER_MASK |
+                      IBus.ModifierType.HYPER_MASK)) != 0) {
+            return false;
+        }
+
         // Filter out unnecessary modifier bits
         // FIXME: should resolve virtual modifiers
         uint _state = state & (IBus.ModifierType.CONTROL_MASK |