patch 8.1.0807: session test fails on MS-Windows commit https://github.com/vim/vim/commit/9e79ccbe9ce6fce18939c7ac2e5ad059a3bd1951 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 24 15:57:30 2019 +0100 patch 8.1.0807: session test fails on MS-Windows Problem: Session test fails on MS-Windows. Solution: Don't try creating file with illegal name.

--- a/src/testdir/test_mksession.vim
+++ b/src/testdir/test_mksession.vim
@@ -427,6 +427,10 @@ func Test_mksession_no_errmsg()
 endfunc
 
 func Test_mksession_quote_in_filename()
+  if !has('unix')
+    " only Unix can handle this weird filename
+    return
+  endif
   let v:errmsg = ''
   %bwipe!
   split another