Problem:
Not all Lua code is checked by stylua. Automating code-style is an
important mechanism for reducing time spent on accidental
(non-essential) complexity.
Solution:
- Enable lintlua for `test/unit/` directory.
- TODO: only `test/functional/` remains unchecked.
previous: 45fe4d11ad
previous: 517f0cc634
Problem: Search error message doesn't show used pattern.
Solution: Pass the actually used pattern to where the error message is
given. (Rob Pilling, closesvim/vim#11742)
e86190e7c1
Co-authored-by: Rob Pilling <robpilling@gmail.com>