commit https://github.com/vim/vim/commit/5d2ca0402954ff79b73d9c86cc16c8a6454b75a7 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 26 17:11:21 2016 +0200 patch 7.4.1956 Problem: When using CTRL-W f and pressing "q" at the ATTENTION dialog the newly opened window is not closed. Solution: Close the window and go back to the original one. (Norio Takagi, Hirohito Higashi)

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}
xrx
yRy
abcd