--- vim-7.4.2189/runtime/defaults.vim 2016-08-09 22:26:29.727124083 +0200
+++ vim-8.2.0241/runtime/defaults.vim 2020-05-13 10:02:53.863204152 +0300
@@ -68,6 +68,10 @@
- " Revert with ":unmap Q".
map Q gq
+ sunmap Q
+" Avoid common :X mistype. replace it with :x
+" http://stackoverflow.com/a/17793858