l0ng-ai
d44e2414ca
On Chinese Windows the Maven tool window showed sync errors as mojibake: tool output was decoded as UTF-8, but while JVMs are told to write UTF-8, cmd.exe, batch launchers (mvn.cmd, gradlew.bat) and native tools write their diagnostics in the ANSI code page (GBK). ide_core::output_encoding::decode_tool_output keeps valid UTF-8 and decodes other lines in the system code page (GetACP). It is used wherever OpenIDEA shows output of tools it launches itself: Maven/Gradle sync and tasks, tool installers, SDK probes, Docker, coverage, environment setup, Cargo stderr for debugging, agent version probes and notebook kernel stderr. Run consoles and protocol streams keep their own encodings. 未在 Windows 实机验证。 Refs #262
The IDE you know, rebuilt in Rust.
https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0
OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
Build
pnpm install
pnpm tauri dev
Rust 1.96, Node 22, pnpm and the Tauri prerequisites.
Native notebook execution tests are opt-in and need two distinct Python environments
with ipykernel installed:
OPENIDEA_TEST_PYTHON=/first/env/bin/python \
OPENIDEA_TEST_PYTHON_SECOND=/second/env/bin/python \
cargo test -p ide-notebook --test kernel_runtime -- --ignored --test-threads=1
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.