fakevim: handle '$s' properly

src/plugins/fakevim/fakevimhandler.cpp

@@ -1271,6 +1271,8 @@ EventResult FakeVimHandler::Private::handleCommandMode(int key, int unmodified,
     } else if (key == control('r')) {
         redo();
     } else if (key == 's') {
+        if (atEndOfLine())
+            moveLeft();
         setAnchor();
         moveRight(qMin(count(), rightDist()));
         m_registers[m_register] = removeSelectedText();