fakevim: fix ^ when it is a dead key

src/plugins/fakevim/fakevimhandler.cpp

@@ -72,6 +72,7 @@
 #include <QtCore/QStack>
 
 #include <QtGui/QApplication>
+#include <QtGui/QInputMethodEvent>
 #include <QtGui/QKeyEvent>
 #include <QtGui/QLineEdit>
 #include <QtGui/QPlainTextEdit>
@@ -3968,6 +3969,21 @@ bool FakeVimHandler::eventFilter(QObject *ob, QEvent *ev)
         return false;
     }
 
+    if (active && ev->type() == QEvent::InputMethod && ob == d->editor()) {
+        // This handles simple dead keys. The sequence of events is
+        // KeyRelease-InputMethod-KeyRelease  for dead keys instead of
+        // KeyPress-KeyRelease as for simple keys. As vi acts on key presses,
+        // we have to act on the InputMethod event.
+        // FIXME: A first approximation working for e.g. ^ on a German keyboard
+        QInputMethodEvent *imev = static_cast<QInputMethodEvent *>(ev);
+        KEY_DEBUG("INPUTMETHOD" << imev->commitString() << imev->preeditString());
+        QString commitString = imev->commitString();
+        int key = commitString.size() == 1 ? commitString.at(0).unicode() : 0;
+        QKeyEvent kev(QEvent::KeyPress, key, Qt::KeyboardModifiers(), commitString);
+        EventResult res = d->handleEvent(&kev);
+        return res == EventHandled;
+    }
+
     if (active && ev->type() == QEvent::KeyPress && ob == d->editor()) {
         QKeyEvent *kev = static_cast<QKeyEvent *>(ev);
         KEY_DEBUG("KEYPRESS" << kev->key());