`docs/METHOD.md` asks each deviation to name the reference fact and why benilla differs. About 130 `Deviation:` comments gave no reason, and the Warden comment lost its reason when the refusal became a read-past.
- `scripts/genmap.sh --check`, now a gate, fails a `Deviation:` comment without "because" and a `Deviates` row without a Why.
- `scripts/deviation-why.allow` lists the 43 comments whose change recorded no reason. It only shrinks: an entry that gains its reason, or is new against main's copy, fails.
- About 190 comments that gave their reason in other words now say "because", with their meaning kept.
- Nine reasons, the Warden one among them, come back from the commits and pull requests that made them.
Tested by the gate on the full tree, and by its failure on a comment with no reason and on a stale entry.
Fixes#2856Fixes#2857🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
benilla-lua's string and number library now answers as the client's:
- `string.byte` returns one byte (`0x7fc210`).
- `gsub` takes only a string or a function (`0x7fd163`), and `%0` raises (`0x7fce20`).
- `lower` and `upper` case-map UTF-8 (`0x7fbeb0`).
- `tonumber` with a base is MSVC's 32-bit `strtoul` (`0x40db09`), on every platform.
- Chunk names cut at a NUL and at `\n` (`0x835144`).
- `string.format` is the client's native one (`0x7fd3d0`): `__ftol` conversions, `%q`'s table, one-digit `n$`, and the client's errors.
- Number text is the MSVC CRT's, ported down to `$I10_OUTPUT`: `1.#INF`, `-1.#IND`, `1e+020`.
- A NaN made from numbers is the x87 indefinite, and the math library returns the runtime's own answers at infinities.
A fuzz against the client's own `sprintf`, run in emulation, matches 1.5M cases. Every fix fails its test without it. `tostring` and `%g` got faster.
Fixes#1367Fixes#1368Fixes#1373Fixes#1375Fixes#1376Fixes#1450Fixes#1481Fixes#1486Fixes#1770🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
benilla-lua is a Lua 5.1.5 interpreter in Rust that speaks the 1.12.1 client's grammar. It is opt-in behind the `benilla-vm` feature, with `benilla-mlua`, the slice of mlua that benilla-ui uses, over it. The C build stays the default. Its front end ports 5.1.5's `lparser.c` and `lcode.c`, so registers, limits and messages match the C build's.
Our finish on top:
- the collector counts growth as C does, off the write path;
- frames under a leaky generic `for` start nil, as `luaD_precall`;
- the budget hook counts what C dispatches, and costs nothing when unset;
- `__index` chains stop at 100;
- mlua 0.11's conversions;
- `vm_parity` answers recorded per platform.
Tests: `vm_parity` on both VMs; the front-end corpus (8,543 chunks) against `string.dump`; 7,613 app and UI tests on benilla-lua. Built on macOS; Linux by CI.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Sam <samuv.eth@gmail.com>
Sam Sung