patch 7.4.1995
Problem:    GUI: cursor drawn in wrong place if a timer callback causes a
            screen update. (David Samvelyan)
Solution:   Also redraw the cursor when it's blinking and on.
diff --git a/src/proto/gui_photon.pro b/src/proto/gui_photon.pro
index 46d73b7..b03479c 100644
--- a/src/proto/gui_photon.pro
+++ b/src/proto/gui_photon.pro
@@ -40,6 +40,7 @@
 void gui_mch_draw_hollow_cursor(guicolor_T color);
 void gui_mch_draw_part_cursor(int w, int h, guicolor_T color);
 int gui_mch_is_blinking(void);
+int gui_mch_is_blink_off(void);
 void gui_mch_set_blinking(long wait, long on, long off);
 void gui_mch_start_blink(void);
 void gui_mch_stop_blink(void);