l0ng-ai
3c783e8b5a
On Windows the downloaded jdtls was started through bin/jdtls.bat, which runs `python` and then `pause`. Without a working Python the batch file printed pause's prompt in the console code page on stdout; the client stopped reading at that "non-UTF-8 header", killed the process and showed only "exited with code 1". - jdtls: build the JVM command line of the release's launcher script (Equinox launcher jar, per-platform shared configuration, JDK 24+ XML limits, --jvm-arg options, -data) and start `java` from the selected JDK directly, on every platform. Own wrapper scripts and other layouts keep their command. - JSON-RPC transport: stdout lines that cannot start a message header are decoded, logged and handed to the stderr callback instead of ending the connection; stderr and these lines are decoded as UTF-8, else in the Windows OEM/ANSI code page, else lossily. - A process that exits on its own is reported closed only after its remaining output is read, and a failed initialize waits for the exit, so the crash message carries the real exit code and the last lines. - TCP-started language servers and DAP adapters read their output the same way (a non-UTF-8 line no longer stops the reader); stray adapter stdout goes into the adapter's error tail. Fixes #90 Claude-Session: https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
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.
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.