Problem: Some tests are still old style.
Solution: Convert to new style tests. (Yegappan Lakshmanan, closesvim/vim#5957)
https://github.com/vim/vim/commit/08f4157c5cabc55bcb22f04dd7c717aba40caa34
Fix missing error message when sort() compare function fails.
Cherry-pick a line in test_utf8.vim from patch 8.2.0448.
Cherry-pick builtin_function() change from patch 8.2.0595.
Hope this will make people using feed_command less likely: this hides bugs.
Already found at least two:
1. msgpackparse() will show internal error: hash_add() in case of duplicate
keys, though it will still work correctly. Currently silenced.
2. ttimeoutlen was spelled incorrectly, resulting in option not being set when
expected. Test was still functioning somehow though. Currently fixed.
It is otherwise impossible to determine which test failed sanitizer/valgrind
check. test/functional/helpers.lua module return was changed so that tests which
do not provide after_each function to get new check will automatically fail.
The hexadecimal notation is a Luajit extension which is not compatible with Lua
5.1. While Lua 5.2 does support hexadecimal sequences, it is better to target
Lua 5.1 for maximum compatibility with Luajit(which has fully compatible with
5.1 API/ABI).
As the work of this migration did take quite some time, some changes where
made in master after this branch was started. These are ported to the new
test file.
The old test_eval.in file did a `:wq` on line 168. The following 60 lines
where not used and there was no expected output for them in test_eval.ok.
This test code is now used in several test cases in the new test file.
