Problem:    Using the system default encoding makes tests unpredictable.
Solution:   Always use utf-8 or latin1 in the new style tests.  Remove setting
            encoding and scriptencoding where it is not needed.

https://github.com/vim/vim/commit/ac105ed3c420660ddbddc501c97875c48220817e

vim-patch:7.4.1923

Problem:    Command line editing is not tested much.
Solution:   Add tests for expanding the file name and 'wildmenu'.

https://github.com/vim/vim/commit/ae3150ec8d9da4a244acffebea55416946ca23d3

The test_cmdline.vim tests were ported in 23f591dba078fee16a and thus
should have marked 1923 as applied. The test_cmdline.vim invocation
has been moved from test_alot.vim to src/nvim/testdir/Makefile to
better accord with the upstream code.

Problem:    has('patch-7.4.1') doesn't work.
Solution:   Fix off-by-one error. (Thinca)

https://github.com/vim/vim/commit/819821c5a95fc60797ecbb5e5ca1302e397e3d9a

Problem:    Tests fail without the 'keymap' features.
Solution:   Check for feature in test.

https://github.com/vim/vim/commit/9376f5f482a4d579436bf364778c2d8ab8e2f22d

Problem:    When setting 'filetype' there is no check for a valid name.
Solution:   Only allow valid characters in 'filetype', 'syntax' and 'keymap'.

https://github.com/vim/vim/commit/d0b5138ba4bccff8a744c99836041ef6322ed39a

vim-patch:7.4.2174

Problem:    Order of matches for 'omnifunc' is messed up. (Danny Su)
Solution:   Do not set compl_curr_match when called from complete_check().
            (closes vim/vim#1168)

https://github.com/vim/vim/commit/472e85970ee3a80abd824bef510df12e9cfe9e96

Problem:    Adding duplicate flags to 'whichwrap' leaves commas behind.
Solution:   Also remove the commas. (Naruhiko Nishino)

https://github.com/vim/vim/commit/c8ce615299b4d8c1b2e6cf83496f48cd497d8a37

Problem:    A plugin does not know when VimEnter autocommands were already
            triggered.
Solution:   Add the v:vim_did_enter variable.

https://github.com/vim/vim/commit/1473551a4457d4920b235eeeb9f279e196ee7225