Rani
5df18ff955
Resubmit of #59731, which got auto-closed when I accidentally deleted its branch. It wasn't rejected, it had already been reviewed. This is rebased onto latest `main`, and osiewicz's review feedback (using `_` for the unused param in the trait default) is already in. Follow-up to #58510. Profiling multi-cursor typing on current main showed the per-keystroke `set_active_selections` broadcast does an O(selections) multi-buffer anchor remap and runs even with zero collaborators (about 0.9ms/call at 1k cursors, 8.4ms at 10k, fired ~3x per edited iteration). This skips the broadcast when the buffer has no audience, and re-publishes on share so there's no regression: - Add `CollaborationHub::should_broadcast_selections`, defaulting to `true`. `Entity<Project>` overrides it to `Project::is_shared()`, which is true for a host that shared the project and for a collab guest, and stays correct before peer-join notifications have propagated locally (unlike a live collaborator count). A purely local project has no audience. - Gate `set_active_selections` in `selections_did_change` on it. Follow-mode is unaffected since it uses the separate UpdateFollowers/UpdateView channel, and the focused user's own cursors render from `editor.selections`, not `remote_selections`. - When the project becomes (re)shared (`RemoteIdChanged(Some)`, `Reshared`, `HostReshared`), the focused editor re-publishes its current selections, so a peer joining after a share still sees the host's cursor without waiting for the next selection change. - Reuse the post-edit display snapshot in the `hard_wrap` branch instead of taking a redundant fresh buffer snapshot. Multi-cursor type+delete benchmark: about 5% faster at both 1k and 10k cursors (615 to 583 ms at 10k, significant). All 773 editor tests pass locally. Collab and channel-buffer integration tests need the test DB, so they run on CI. Discussion and profiling: https://github.com/zed-industries/zed/issues/32051 Release Notes: - Improved multi cursor editing performance
Zed
Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
Installation
On macOS, Linux, and Windows you can download Zed directly or install Zed via your local package manager (macOS/Linux/Windows).
Other platforms are not yet available:
- Web (tracking discussion)
Developing Zed
Contributing
See CONTRIBUTING.md for ways you can contribute to Zed.
Also... we're hiring! Check out our jobs page for open roles.
Licensing
Zed source code is licensed primarily under GPL-3.0-or-later, with Apache-2.0 components where marked.
License information for third party dependencies must be correctly provided for CI to pass.
We use cargo-about to automatically comply with open source licenses. If CI is failing, check the following:
- Is it showing a
no license specifiederror for a crate you've created? If so, addpublish = falseunder[package]in your crate's Cargo.toml. - Is the error
failed to satisfy license requirementsfor a dependency? If so, first determine what license the project has and whether this system is sufficient to comply with this license's requirements. If you're unsure, ask a lawyer. Once you've verified that this system is acceptable add the license's SPDX identifier to theacceptedarray inscript/licenses/zed-licenses.toml. - Is
cargo-aboutunable to find the license for a dependency? If so, add a clarification field at the end ofscript/licenses/zed-licenses.toml, as specified in the cargo-about book.
Sponsorship
Zed is developed by Zed Industries, Inc., a for-profit company.
If you’d like to financially support the project, you can do so via GitHub Sponsors. Sponsorships go directly to Zed Industries and are used as general company revenue. There are no perks or entitlements associated with sponsorship.