patch 8.1.1837: popup test fails if clipboard is supported but not working commit https://github.com/vim/vim/commit/4999a7fb6585915b53888c930067b33c01674678 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Aug 10 22:21:48 2019 +0200 patch 8.1.1837: popup test fails if clipboard is supported but not working Problem: Popup test fails if clipboard is supported but not working. Solution: Add the "clipboard_working" feature. Also use Check commands instead of "if" and "throw". And remove stray ch_logfile().