patch 8.2.0011: screen updating wrong when opeing preview window Commit: https://github.com/vim/vim/commit/5e5a98d7de41457fabad4eb5af3d54cc93f05d0a Author: Bram Moolenaar <Bram@vim.org> Date: Sun Dec 15 14:55:33 2019 +0100 patch 8.2.0011: screen updating wrong when opeing preview window Problem: Screen updating wrong when opeing preview window. Solution: Redraw the window when the preview window opens.

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