commit https://github.com/vim/vim/commit/f2f6d297966ec0e357640b71a238e51afcaba6cc Author: Bram Moolenaar <Bram@vim.org> Date: Mon Dec 28 20:57:10 2015 +0100 patch 7.4.985 Problem: Can't build with Ruby 2.3.0. Solution: Use the new TypedData_XXX macro family instead of Data_XXX. Use TypedData. (Ken Takata)

start:
test for empty string: ok
test for 1 char: ok
test for 3 chars: ok
test for contains meta char: ok
test for contains non-ascii char: ok