Fix Ctrl+K in the command palette

Sources/AppDelegate.swift

@@ -1620,10 +1620,10 @@ func commandPaletteSelectionDeltaForKeyboardNavigation(
 
     if normalizedFlags == [.control] {
         // Control modifiers can surface as either printable chars or ASCII control chars.
+        // Keep Emacs-style next/previous navigation, but leave other control bindings
+        // (for example Ctrl+K text editing in the palette search field) to AppKit.
         if keyCode == 45 || normalizedChars == "n" || normalizedChars == "\u{0e}" { return 1 }    // Ctrl+N
         if keyCode == 35 || normalizedChars == "p" || normalizedChars == "\u{10}" { return -1 }   // Ctrl+P
-        if keyCode == 38 || normalizedChars == "j" || normalizedChars == "\u{0a}" { return 1 }    // Ctrl+J
-        if keyCode == 40 || normalizedChars == "k" || normalizedChars == "\u{0b}" { return -1 }   // Ctrl+K
     }
 
     return nil

Sources/ContentView.swift

@@ -4539,7 +4539,6 @@ struct ContentView: View {
         }
 
         return currentMatchingQuery == resolvedMatchingQuery
-            || currentMatchingQuery.hasPrefix(resolvedMatchingQuery)
     }
 
     private func scheduleCommandPaletteResultsRefresh(

cmuxTests/AppDelegateShortcutRoutingTests.swift

@@ -2351,8 +2351,8 @@ final class AppDelegateShortcutRoutingTests: XCTestCase {
         XCTFail("debugMarkCommandPaletteOpenPending is only available in DEBUG")
 #endif
 
-        // Simulate a visibility sync lag/race where AppDelegate does not yet know the palette is open.
-        appDelegate.setCommandPaletteVisible(false, for: window)
+        // Model the normal open-palette state so the test reads like the user-facing scenario.
+        appDelegate.setCommandPaletteVisible(true, for: window)
 
         guard let escapeEvent = makeKeyDownEvent(
             key: "\u{1b}",
@@ -2445,6 +2445,72 @@ final class AppDelegateShortcutRoutingTests: XCTestCase {
         XCTAssertEqual(observedDelta, 1)
     }
 
+    func testControlKDoesNotRoutePaletteMoveSelectionWhenSearchFieldIsFocused() {
+        guard let appDelegate = AppDelegate.shared else {
+            XCTFail("Expected AppDelegate.shared")
+            return
+        }
+
+        let windowId = appDelegate.createMainWindow()
+        defer {
+            closeWindow(withId: windowId)
+        }
+
+        guard let window = window(withId: windowId),
+              let contentView = window.contentView else {
+            XCTFail("Expected test window")
+            return
+        }
+
+        let overlayContainer = NSView(frame: contentView.bounds)
+        overlayContainer.identifier = commandPaletteOverlayContainerIdentifier
+        overlayContainer.alphaValue = 1
+        overlayContainer.isHidden = false
+        contentView.addSubview(overlayContainer)
+
+        let fieldEditor = CommandPaletteMarkedTextFieldEditor(frame: NSRect(x: 0, y: 0, width: 200, height: 24))
+        fieldEditor.isFieldEditor = true
+        overlayContainer.addSubview(fieldEditor)
+        XCTAssertTrue(window.makeFirstResponder(fieldEditor))
+
+        appDelegate.setCommandPaletteVisible(false, for: window)
+        defer {
+            overlayContainer.removeFromSuperview()
+            fieldEditor.removeFromSuperview()
+        }
+
+        let moveExpectation = expectation(
+            description: "Ctrl+K should not be rerouted as command palette move-selection"
+        )
+        moveExpectation.isInverted = true
+        let moveToken = NotificationCenter.default.addObserver(
+            forName: .commandPaletteMoveSelection,
+            object: nil,
+            queue: nil
+        ) { _ in
+            moveExpectation.fulfill()
+        }
+        defer { NotificationCenter.default.removeObserver(moveToken) }
+
+        guard let controlKEvent = makeKeyDownEvent(
+            key: "\u{0b}",
+            modifiers: [.control],
+            keyCode: 40,
+            windowNumber: window.windowNumber
+        ) else {
+            XCTFail("Failed to construct Ctrl+K event")
+            return
+        }
+
+#if DEBUG
+        XCTAssertFalse(appDelegate.debugHandleCustomShortcut(event: controlKEvent))
+#else
+        XCTFail("debugHandleCustomShortcut is only available in DEBUG")
+#endif
+
+        wait(for: [moveExpectation], timeout: 0.2)
+    }
+
     func testEscapeDismissesCommandPaletteWhenVisibilityStateStaysStalePastInitialPendingWindow() {
         guard let appDelegate = AppDelegate.shared else {
             XCTFail("Expected AppDelegate.shared")

cmuxTests/CommandPaletteSearchEngineTests.swift

@@ -485,8 +485,8 @@ final class CommandPaletteSearchEngineTests: XCTestCase {
         )
     }
 
-    func testPendingEmptyStateIsPreservedWhenRefiningAResolvedNoMatchQuery() {
-        XCTAssertTrue(
+    func testPendingEmptyStateIsNotPreservedWhileSearchIsStillPending() {
+        XCTAssertFalse(
             ContentView.commandPaletteShouldPreserveEmptyStateWhileSearchPending(
                 isSearchPending: true,
                 visibleResultsScopeMatches: true,
@@ -499,6 +499,20 @@ final class CommandPaletteSearchEngineTests: XCTestCase {
         )
     }
 
+    func testPendingEmptyStateIsPreservedForSameResolvedNoMatchQuery() {
+        XCTAssertTrue(
+            ContentView.commandPaletteShouldPreserveEmptyStateWhileSearchPending(
+                isSearchPending: true,
+                visibleResultsScopeMatches: true,
+                resolvedSearchScopeMatches: true,
+                resolvedSearchFingerprintMatches: true,
+                resolvedResultsAreEmpty: true,
+                currentMatchingQuery: "zzzzzzzz",
+                resolvedMatchingQuery: "zzzzzzzz"
+            )
+        )
+    }
+
     func testPendingEmptyStateIsNotPreservedWhenQueryDoesNotRefineResolvedNoMatch() {
         XCTAssertFalse(
             ContentView.commandPaletteShouldPreserveEmptyStateWhileSearchPending(

cmuxTests/ShortcutAndCommandPaletteTests.swift

@@ -213,7 +213,7 @@ final class CommandPaletteKeyboardNavigationTests: XCTestCase {
         )
     }
 
-    func testControlLetterNavigationSupportsPrintableAndControlChars() {
+    func testControlLetterNavigationSupportsPrintableAndControlCharsForNPOnly() {
         XCTAssertEqual(
             commandPaletteSelectionDeltaForKeyboardNavigation(
                 flags: [.control],
@@ -246,37 +246,36 @@ final class CommandPaletteKeyboardNavigationTests: XCTestCase {
             ),
             -1
         )
-        XCTAssertEqual(
+    }
+
+    func testDoesNotTreatControlJKAsPaletteNavigation() {
+        XCTAssertNil(
             commandPaletteSelectionDeltaForKeyboardNavigation(
                 flags: [.control],
                 chars: "j",
                 keyCode: 38
-            ),
-            1
+            )
         )
-        XCTAssertEqual(
+        XCTAssertNil(
             commandPaletteSelectionDeltaForKeyboardNavigation(
                 flags: [.control],
                 chars: "\u{0a}",
                 keyCode: 38
-            ),
-            1
+            )
         )
-        XCTAssertEqual(
+        XCTAssertNil(
             commandPaletteSelectionDeltaForKeyboardNavigation(
                 flags: [.control],
                 chars: "k",
                 keyCode: 40
-            ),
-            -1
+            )
         )
-        XCTAssertEqual(
+        XCTAssertNil(
             commandPaletteSelectionDeltaForKeyboardNavigation(
                 flags: [.control],
                 chars: "\u{0b}",
                 keyCode: 40
-            ),
-            -1
+            )
         )
     }
 

tests_v2/test_command_palette_navigation_keys.py

@@ -3,8 +3,8 @@
 Regression test: command palette list navigation keys.
 
 Validates:
-- Down: ArrowDown, Ctrl+N, Ctrl+J
-- Up: ArrowUp, Ctrl+P, Ctrl+K
+- Down: ArrowDown, Ctrl+N
+- Up: ArrowUp, Ctrl+P
 """
 
 import os
@@ -125,10 +125,10 @@ def main() -> int:
             message="no focused surface available for command palette context",
         )
 
-        for combo in ("down", "ctrl+n", "ctrl+j"):
+        for combo in ("down", "ctrl+n"):
             _assert_move(client, window_id, combo, start_index=0, expected_index=1)
 
-        for combo in ("up", "ctrl+p", "ctrl+k"):
+        for combo in ("up", "ctrl+p"):
             _assert_move(client, window_id, combo, start_index=1, expected_index=0)
 
         _assert_can_navigate_past_ten_results(client, window_id)