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* test(harness): migrate away from magic globalsJustin M. Keyes2026-07-21
| | | | | | | | | | | | | | | | | | | | | 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`.
* perf(lua): memoize `key_fn` results #39568Yi Ming2026-05-05
| | | | | | | | | | | Problem: When using `vim.list.unique` or `vim.list.bisect`, if the `key` function is complex, it can degrade performance, because it is invoked on every comparison Solution: The `key` interface convention is designed specifically to address this issue; performance can be improved by memoizing its results. Also added the shorthand use of the field name string as the key.
* feat(lua): vim.list.bisect() #35108Yi Ming2025-08-03