commit https://github.com/vim/vim/commit/9d5d3c9c4468ad76f16b50eabd3d9e7eab2ed44d Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jul 7 16:43:02 2016 +0200 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.

--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -818,6 +818,12 @@ gui_mch_is_blinking(void)
     return blink_state != BLINK_NONE;
 }
 
+    int
+gui_mch_is_blink_off(void)
+{
+    return blink_state == BLINK_OFF;
+}
+
     void
 gui_mch_set_blinking(long waittime, long on, long off)
 {