patch 8.1.1303: not possible to hide a balloon commit https://github.com/vim/vim/commit/be0a2597ae0d9eb0b8a8a2fc9ae1784faa929844 Author: Bram Moolenaar <Bram@vim.org> Date: Thu May 9 13:50:16 2019 +0200 patch 8.1.1303: not possible to hide a balloon Problem: Not possible to hide a balloon. Solution: Hide the balloon when balloon_show() is called with an empty string or list. Add balloon_gettext().

--- a/src/gui_w32.c
+++ b/src/gui_w32.c
@@ -8506,6 +8506,15 @@ gui_mch_post_balloon(BalloonEval *beval,
 {
     POINT   pt;
 
+    vim_free(beval->msg);
+    beval->msg = mesg == NULL ? NULL : vim_strsave(mesg);
+    if (beval->msg == NULL)
+    {
+	delete_tooltip(beval);
+	beval->showState = ShS_NEUTRAL;
+	return;
+    }
+
     // TRACE0("gui_mch_post_balloon {{{");
     if (beval->showState == ShS_SHOWING)
 	return;