Jia Sui
e1a664a194
锁定值与上游实际资产不符（字节数 409719852 vs 409412652，摘要 ae43724a… vs 873cbbb3…），下载在字节锁处失败。上游 LTS 会被原地重传且无不可变资产 URL，摘要硬锁意味着每次重训都要改代码发签名安装包，否则全用户下载失败，这个成本消不掉。 改为锁格式：删字节数常量，总长取响应 Content-Length 并在收完后比对一次（截断检测）；新增 ValidateFormat 让引擎读取端自己开一次（魔数 + 双数组边界，不按文件自带长度做堆分配）。摘要不再参与放行，只判断 reviewed 并写入旁挂 .sha256（状态查询要频繁调用，不能每次重算 400MB 哈希）。真实上游字节按 open() 判据复核精确贴边通过：array_size=102353152，收尾正好在 409412652。 kReviewedSha256 保留旧值，摘要不符即 reviewed=false，设置页明示「上游已更新，未经评测」，NOTICE 记录实际摘要与字节数并附差异说明。契约无需重生成：sentence_collocation_model_status 是两个宿主各自拼的 ad-hoc JSON，不在 schema.json 内。 撤下无法验证的宣称：设置页删掉「评测 top1 +6 个百分点」（仓里没有评测工具、没有 docs/research，该数字无法复现），改为描述机制；清掉两处对从未进仓的文档与工具的引用（docs/research、tests/src/gram_reader、eval_lm_compare）；修正 octagram_gram.h 里被本次改动失效的「摘要校验在下载侧做」。配置只改注释、未增删键，五件套映射不适用。
Metasequoia IME for Windows
中文 README · Website · Docs · Privacy
A free and open-source Chinese and Japanese input method for Windows 10 and 11, built on TSF with no legacy IMM32 path.
This repository is the whole Windows product: the TSF text service DLL, the resident server, the conversion engine, a self-written native GUI framework, the HTML surfaces and the installer. The engine was imported from MSIME-Engine and specialized for Windows; it now lives in engine/ as a first-party component, so a plain clone builds the product. See engine/UPSTREAM.md.
This is a public beta. Expect rough edges and read the release notes before upgrading.
Install
Download the installer from Releases or the download page, run it, then switch with Win + Space.
Current builds are not code signed. SmartScreen will block them and uiAccess is unavailable, which means the candidate window cannot float above elevated applications. Verify the download with the SHA256 published on the download page.
You need the Microsoft Visual C++ 2015–2022 Redistributable (x64). The server and settings app are 64-bit; the x86 redistributable is a separate package and does not substitute for it. If you cannot switch to the IME, the server keeps exiting, or the settings window closes immediately, install that first.
What it does
- Chinese input: full pinyin, double pinyin (Xiaohe / Ziranma / Shoudao / Microsoft / Sogou / Ziguang / Zhineng ABC / Guobiao / Pinyin Jiajia), Wubi 86
- Japanese input: romaji, with hiragana, katakana and dictionary candidates; also available as a temporary mode from Chinese
- Helpcode (形码) filtering on pinyin schemes: six tables, single- and double-code
- Optional cloud candidates, and AI suggestions via DeepSeek / OpenAI / SiliconFlow / Groq
- English-Chinese glosses in the vertical candidate window
- Mixed Chinese-English input, emoji and kaomoji, a dedicated English candidate mode
- Local input statistics (off by default): character counts and active time stay on this machine; view and clean them under Settings → Statistics
- Voice input with streaming recognition and optional cleanup
- Handwriting, on-screen keyboard, floating toolbar, clipboard history
- User dictionary management, candidate frequency tuning, skins with light and dark variants
Privacy
An input method sees every keystroke, so the boundaries are stated explicitly in PRIVACY.md: which features reach the network, what each one sends, what the defaults are, and how to turn each off.
Two things worth knowing up front. Cloud candidates are on by default — the composition spelling goes to Google's input-tools service, and it is the only network feature that works without you supplying a credential. API tokens are stored in plain text in config.toml, unlike macOS and Linux which use the Keychain and Secret Service.
There is no telemetry, analytics or crash reporting of any kind.
Building and contributing
CONTRIBUTING.md has the environment, the build order and what to run before opening a pull request. Contributions do not have to be code — dictionary entries, documentation, icons and compatibility testing all count, and the recruiting page lists them by area.
Note that most issues, documentation and code comments are in Chinese. English pull requests and issues are welcome.
Licence
GPL-3.0. See LICENSE and THIRD_PARTY_NOTICES.txt.