Fix toggling current item selection

Fixes #2850

Author: hluk

src/gui/clipboardbrowser.cpp

@@ -1390,6 +1390,16 @@ void ClipboardBrowser::keyPressEvent(QKeyEvent *event)
 
     const int key = event->key();
 
+    // WORKAROUND: Avoid triggering search with Ctrl+Space toggle selection action.
+    if (mods.testFlag(Qt::ControlModifier) && key == Qt::Key_Space) {
+        const QModelIndex current = currentIndex();
+        if (!edit(current, AnyKeyPressed, event)) {
+            selectionModel()->select(current, selectionCommand(current, event));
+            event->accept();
+            return;
+        }
+    }
+
     // This fixes few issues with default navigation and item selections.
     switch (key) {
     case Qt::Key_Up:

src/tests/tests.cpp

@@ -2606,6 +2606,17 @@ void Tests::selectItems()
 
     RUN("keys" << "CTRL+A", "");
     RUN("testSelected", tab + " 1 0 1 2\n");
+
+    // CTRL+SPACE toggles current item selection
+    RUN("add" << "D", "");
+    RUN("keys" << "PGUP" << "CTRL+SHIFT+DOWN" << "CTRL+SHIFT+DOWN", "");
+    RUN("testSelected", tab + " 2 0\n");
+    RUN("keys" << "CTRL+SPACE", "");
+    RUN("testSelected", tab + " 2 0 2\n");
+    RUN("keys" << "SHIFT+DOWN", "");
+    RUN("testSelected", tab + " 3 0 2 3\n");
+    RUN("keys" << "CTRL+SPACE", "");
+    RUN("testSelected", tab + " 3 0 2\n");
 }
 
 void Tests::moveItems()