patch 8.0.0206: test coverage for :retab insufficient commit https://github.com/vim/vim/commit/8822744b4d9d40aa1fd59870a8bdd7c64c59a42b Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jan 17 22:16:00 2017 +0100 patch 8.0.0206: test coverage for :retab insufficient Problem: Test coverage for :retab insufficient. Solution: Add test for :retab. (Dominique Pelle, closes https://github.com/vim/vim/issues/1391)