commit https://github.com/vim/vim/commit/520e1e41f35b063ede63b41738c82d6636e78c34 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 23 19:46:28 2016 +0100 patch 7.4.1154 Problem: No support for JSON. Solution: Add jsonencode() and jsondecode(). Also add v:false, v:true, v:null and v:none.

--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -1032,6 +1032,11 @@ static VALUE vim_to_ruby(typval_T *tv)
 		}
 	    }
 	}
+    }
+    else if (tv->v_type == VAR_SPECIAL)
+    {
+	if (tv->vval.v_number <= VVAL_TRUE)
+	    result = INT2NUM(tv->vval.v_number);
     } /* else return Qnil; */
 
     return result;