KEY-CLIPBOARD: Shift+Insert pastes settings plainly on Windows

egui-winit also sends a paste for Windows' Shift+Insert (and a cut for
Shift+Delete): read with the Shift held, it matched ⇧Ctrl+V and opened
Paste Selected Settings. A clipboard event with no Ctrl/⌘ held is now
the plain command.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/ui-egui/src/shortcuts.rs

@@ -261,8 +261,9 @@ pub fn parse(s: &str) -> Option<(Modifiers, Key)> {
 
 fn matches(i: &egui::InputState, m: Modifiers, k: Key) -> bool {
     // the windowing layer turns ⌘C / ⌘X / ⌘V (with any other modifiers held) and the keyboard's
-    // Copy / Cut / Paste keys into these on Windows and Linux (macOS's menu bar takes them first)
-    let clipboard = Modifiers { command: true, ..i.modifiers };
+    // Copy / Cut / Paste keys into these on Windows and Linux (macOS's menu bar takes them first);
+    // without ⌘/Ctrl held they came from a key that is the plain command (Windows' ⇧Insert pastes)
+    let clipboard = if i.modifiers.command { i.modifiers } else { Modifiers::COMMAND };
     i.events.iter().any(|e| {
         let (key, physical_key, modifiers) = match e {
             egui::Event::Key { key, physical_key, pressed: true, modifiers, .. } => (key, physical_key, modifiers),

crates/ui-egui/src/tests_keymap.rs

@@ -162,3 +162,17 @@ fn clipboard_events_run_the_copy_and_paste_shortcuts() {
     h.settle(SETTLE);
     assert!(matches!(h.app.ui.dialog, Some(Dialog::PasteSettings { .. })), "⇧Ctrl+V: {:?}", h.app.ui.dialog);
 }
+
+/// Windows also pastes with ⇧Insert and cuts with ⇧Delete: the clipboard events they become are
+/// the plain Paste / Cut, not ⇧Ctrl+V (Paste Selected Settings).
+#[test]
+fn shift_insert_pastes_plainly() {
+    let mut h = demo();
+    h.events.push(egui::Event::Copy);
+    h.settle(SETTLE);
+    let undo = h.app.session.undo.len();
+    h.events.extend([egui::Event::ModifiersChanged(egui::Modifiers::SHIFT), egui::Event::Paste("text".into())]);
+    h.settle(SETTLE);
+    assert_eq!(h.app.ui.dialog, None, "no Paste Selected Settings");
+    assert_eq!(h.app.session.undo.len(), undo + 1, "the settings were pasted");
+}