patch 8.0.0421: diff mode wrong when adding line at end of buffer commit https://github.com/vim/vim/commit/f58a8475e17bd566760fc7e2a17d35ddf4edacf2 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 5 18:03:04 2017 +0100 patch 8.0.0421: diff mode wrong when adding line at end of buffer Problem: Diff mode is displayed wrong when adding a line at the end of a buffer. Solution: Adjust marks in diff mode. (James McCoy, closes #1329)

is<F4>foo
{'silent': 0, 'noremap': 0, 'lhs': 'foo<C-V>', 'mode': ' ', 'nowait': 0, 'expr': 0, 'sid': 0, 'rhs': 'is<F4>foo', 'buffer': 0}
{'silent': 1, 'noremap': 1, 'lhs': 'bar', 'mode': 'v', 'nowait': 0, 'expr': 1, 'sid': 0, 'rhs': 'isbar', 'buffer': 1}
{'silent': 0, 'noremap': 0, 'lhs': 'foo', 'mode': ' ', 'nowait': 1, 'expr': 0, 'sid': 0, 'rhs': 'bar', 'buffer': 1}
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