commit https://github.com/vim/vim/commit/25e4fcde767084d1a79e0926bc301c92987c0cce Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 9 14:57:47 2016 +0100 patch 7.4.1065 Problem: Cannot use the "dll" options on MS-Windows. Solution: Support the options on all platforms. Use the built-in name as the default, so that it's clear what Vim is looking for.

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