Make sure that we won't wrongly match a hotkey after losing and getting focus.

bus/inputcontext.c

 /* vim:set et sts=4: */
 /* ibus - The Input Bus
  * Copyright (C) 2008-2010 Peng Huang <shawn.p.huang@gmail.com>
  * Copyright (C) 2008-2010 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 1145 matching lines @@
 void
 bus_input_context_focus_in (BusInputContext *context)
 {
     g_assert (BUS_IS_INPUT_CONTEXT (context));
 
     if (context->has_focus)
         return;
 
     context->has_focus = TRUE;
 
+    // To make sure that we won't use an old value left before we losing focus
+    // last time.
+    context->prev_keyval = IBUS_VoidSymbol;
+    context->prev_modifiers = 0;
+
     if (context->engine == NULL && context->enabled) {
         g_signal_emit (context, context_signals[REQUEST_ENGINE], 0, NULL);
     }
 
     if (context->engine && context->enabled) {
         bus_engine_proxy_focus_in (context->engine);
         bus_engine_proxy_enable (context->engine);
         bus_engine_proxy_set_capabilities (context->engine, context->capabilities);
         bus_engine_proxy_set_cursor_location (context->engine, context->x, context->y, context->w, context->h);
     }
@@ skipping 924 matching lines @@
 
     return retval;
 }
 
 guint
 bus_input_context_get_capabilities (BusInputContext *context)
 {
     g_assert (BUS_IS_INPUT_CONTEXT (context));
     return context->capabilities;
 }