ntbang0901
02d30b1609
Document::diff only trimmed the common prefix and suffix, so two distant edits on disk became one change spanning everything between them. The caret and scroll position inside that span were mapped to its start, which made the editor jump to the first edit after an agent, formatter or git operation rewrote the file. Diff the changed middle line by line (Myers via similar, 50 ms deadline with a coarser fallback) and emit one change per edited region, trimmed to its differing characters. The frontend DocSync path produces the same per-region changes, so external reloads, local history restores and formatting keep the caret and view in place. Closes #1326 Co-authored-by: ntbang0901 <[email protected]>
The IDE you know, rebuilt in Rust.
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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.
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