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 now matches the client's Lua 5.0 wherever an addon can see the difference:
- Number keys hash as `hashnum` does (`0x6fa260`), so `pairs` walks them in the client's order.
- Calls nest at most 4096 deep (`0x6f61c0`).
- `^` calls the global `__pow` (`0x6f9b5e`).
- The parser's limits and messages are the client's (`0x6ff440`); the client has no assignment limit.
- A numeric for's variable is its counter (`0x6fe380`, `0x6f9262`).
- A generic for uses `forlist`'s layout (`0x6fe540`): the first name is the control, and closures share the variables.
- Only calls name a callee (`0x6fc499`), and a stray token reports `<eof> expected` (`0x871cf4`).
Each fix has a test that fails without it. Two audits re-derived every address from the bytes. The bench is faster or level.
Fixes#1369Fixes#1370Fixes#1371Fixes#1372Fixes#1374Fixes#1377Fixes#1752Fixes#1753Fixes#1754🤖 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