Problem:    Test file has wrong name.
Solution:   Rename the file.  Various small fixes. (closes vim/vim#10674)
https://github.com/vim/vim/commit/bb404f5ad5ec909318bc24e5b82e4ed7b87ba8f4

Problem:    K_SPECIAL may be escaped twice.
Solution:   Avoid double escaping. (closes vim/vim#10340)
https://github.com/vim/vim/commit/db08887f24d20be11d184ce321bc0890613e42bd

Problem:    When using feedkeys() abbreviations may be blocked.
Solution:   Reset tb_no_abbr_cnt when running out of characters.
            (closes vim/vim#9448)
https://github.com/vim/vim/commit/b37a65e4bf08c4eec4fa5b81a5efc3945fca44de

vim-patch:7.4.1758

Problem:    Triggering CursorHoldI when in CTRL-X mode causes problems.
Solution:   Do not trigger CursorHoldI in CTRL-X mode. Add "!" flag to
            feedkeys() (test with that didn't work though).

https://github.com/vim/vim/commit/245c41070c7f37d52be43cce0cb140bd3ade6c7e

vim-patch:7.4.1759

Problem:    When using feedkeys() in a timer the inserted characters are not
            used right away.
Solution:   Break the wait loop when characters have been added to typebuf.
            use this for testing CursorHoldI.

https://github.com/vim/vim/commit/40b1b5443c88fab77f1f7c6f9e801f7ffdb7e0a8

vim-patch:7.4.1692
Problem:    feedkeys('i', 'x') gets stuck, waits for a character to be typed.
Solution:   Behave like ":normal". (Yasuhiro Matsumoto)

Problem:    Using feedkeys() with an empty string disregards 'x' option.
Solution:   Make 'x' work with an empty string. (Thinca)

When integrating the patch to nvim, used same logic but different code
based on nvim codebase. New test passed.

https://github.com/vim/vim/commit/74c5bbf13435a7ab1e3461078bbcb1200f0451e1