diff -up vim80/runtime/defaults.vim.copy-paste vim80/runtime/defaults.vim

--- vim80/runtime/defaults.vim.copy-paste	2016-12-19 07:57:32.295973442 +0100

+++ vim80/runtime/defaults.vim	2016-12-19 07:58:44.760101540 +0100

@@ -67,7 +67,7 @@ inoremap <C-U> <C-G>u<C-U>

 " In many terminal emulators the mouse works just fine.  By enabling it you

 " can position the cursor, Visually select and scroll with the mouse.

 if has('mouse')

-  set mouse=a

+  set mouse=v

 endif

 " Switch syntax highlighting on when the terminal has colors or when using the