patch 8.1.1812: reading a truncted undo file hangs Vim commit https://github.com/vim/vim/commit/fb06d767a8d76eead5391302fc88115d6e3879d8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 4 18:55:35 2019 +0200 patch 8.1.1812: reading a truncted undo file hangs Vim Problem: Reading a truncted undo file hangs Vim. Solution: Check for reading EOF. (closes https://github.com/vim/vim/issues/4769)