Problem:
The magic globals `it`, `describe`, etc., are more trouble than they are
worth.
- Hooking into `after_each` requires `getfenv()` hacks.
- They confuse luals/emmylua, because the top-level `.luarc.json` isn't
merged with `test/.luarc.json` (apparently a luals limitation?)
- They totally defeat discoverability because the user just has to
"know" about the various magic symbols.
So they harm DX, which means they serve no purpose at all.
Solution:
- Expose the test API from `testutil`, so tests can call `t.it()`,
`t.describe()`, etc., in the conventional way.
- Drop `getfenv()` hacks.
- Drop the `setfenv()` injection in `load_chunk`.
- Drop `test/_meta.lua`.
problem: termkey/driver-ti.c had its internal dependency upon unibilium
which would completely skip builtin terminfo defs.
solution: add termkey info to TerminfoEntry struct
NOTE: this disables a lot of named function keys which are present as
terminfo "keys" both are mostly unset in terminfo entries for modern
terminals, and also not recognized by nvim as mappable keys
anyway, except a few ones like `<undo>` which this still will keep.
We probably don't want to encode up to F63 keys forever. While only 12
physical keys are available on modern keybords, instead Chords using
F-keys are usually encoded as high key numbers, like <C-S-F3>
becoming <F39> . But reconsideirg that has implications for configuration
that is best done as a separate (breaking) change.
Skipped importing the following unit tests from libtermkey as they'd
require introducing a lot of unused code or require more effort to port
than is probably worth:
- 05read
- 12strpkey
- 20canon
- 40ti-override
