patch 8.1.1819: :pedit does not work with a popup preview window commit https://github.com/vim/vim/commit/1b6d9c4215a56f3dda4df6e05d655c853551ffbd Author: Bram Moolenaar <Bram@vim.org> Date: Mon Aug 5 21:52:04 2019 +0200 patch 8.1.1819: :pedit does not work with a popup preview window Problem: :pedit does not work with a popup preview window. Solution: Avoid aborting with an error. (fixes https://github.com/vim/vim/issues/4777) Also double check that after prepare_tagpreview() the current window is not a popup window.

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