From c65dd2d114b8a493b05e8b570a5dff6f696acd9c Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date: Sun, 15 Sep 2019 07:11:00 -0400
Subject: [PATCH] vim-patch:8.1.0220: Ruby converts v:true and v:false to a
 number

Problem:    Ruby converts v:true and v:false to a number.
Solution:   Use Qtrue and Qfalse instead. (Masataka Pocke Kuwabara,
            closes vim/vim#3259)
https://github.com/vim/vim/commit/d84b26a03b13cd816d80ff32b61e8de740d499ce

nvim does not support v:none.
---
 src/nvim/testdir/test_ruby.vim | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/nvim/testdir/test_ruby.vim b/src/nvim/testdir/test_ruby.vim
index ef1a2d25b7..64199570a9 100644
--- a/src/nvim/testdir/test_ruby.vim
+++ b/src/nvim/testdir/test_ruby.vim
@@ -34,6 +34,14 @@ func Test_ruby_evaluate_dict()
   call assert_equal(['{"a"=>"foo", "b"=>123}'], split(l:out, "\n"))
 endfunc
 
+func Test_ruby_evaluate_special_var()
+  let l = [v:true, v:false, v:null]
+  redir => l:out
+  ruby d = Vim.evaluate("l"); print d
+  redir END
+  call assert_equal(['[true, false, nil]'], split(l:out, "\n"))
+endfunc
+
 func Test_rubydo()
   throw 'skipped: TODO: '
   " Check deleting lines does not trigger ml_get error.