benilla read every DBC string from the enUS column and answered enUS everywhere. 1.12.1 reads its locale from `Wow.ini` in the archives (`0x40249d`). It joins `Language` and `Country` into a tag at `0xc2a2a4` (`0x402513`). It looks the tag up in the eight locale names to get the index at `0xc0e080` (`0x402562`); enGB keeps index 0.
- The chain reads `Wow.ini` with the client's ini rules: no trimming, and the first value wins.
- Every localized DBC read takes column `first + index`.
- `GetLocale` and the TOC `Title-xxXX` pick follow the index (`0x48d8b0`, `0x46ce40`).
- The logon challenge (`0x5b2115`) and the name-cache header carry the tag, so this install sends enGB.
Tests:
- A synthetic WDBC per locale.
- 43 loader probes at an empty locale.
- A byte-exact golden for the challenge.
- GetLocale in glue and in game.
Smoke: green.
Fixes#1338🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
831e4d3afc