commit https://github.com/vim/vim/commit/dc0ccaee68ca24d10050117fbec757ad33590a17 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Oct 9 17:28:01 2016 +0200 patch 8.0.0027 Problem: A channel is closed when reading on stderr or stdout fails, but there may still be something to read on another part. Solution: Turn ch_to_be_closed into a bitfield. (Ozaki Kiichi)

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