Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
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Fix flicker of pushed-off sticky project header in threads sidebar (#57529)
The threads sidebar rebuilds its `Vec<ListEntry>` from scratch on events
that touch thread/sidebar state (status changes, title generation, new
live info, sending a message, etc.). It previously called
`ListState::reset` after every rebuild, which rewrote every list item to
`Unmeasured`. On the next render frame, the sticky project header had no
measured bounds for the next project header.

The sticky project header uses `ListState::bounds_for_item` for the next
project header to compute how far it should be pushed off screen. When
those measurements were missing, it temporarily fell back to `top_offset
= 0`, snapped fully into view for one frame, then popped back once the
list was remeasured.

Fix: preserve list measurements for entries whose identity and layout
shape did not change. `EntryShape` captures each entry's identity plus
height-affecting project-header flags. `update_entries` snapshots the
old shapes, rebuilds contents, then splices only the changed shape range
into `ListState`. Unchanged items keep their measured bounds, so the
sticky header remains in its pushed-off position across same-shape
updates.

This also adds a regression test that renders a two-project sidebar,
scrolls into the sticky-header push-off state, performs a same-shape
thread metadata update, and verifies the next header's measured bounds
are preserved.

Closes AI-196

Release Notes:

- Fixed the project section header flickering in the agent threads
sidebar when sending a message while the header was partially scrolled
off screen.
2026-05-26 14:41:26 +00:00
.cargo livekit: Use our build of libwebrtc.a (#51433) 2026-03-16 10:47:36 +01:00
.cloudflare Staged docs releases (#50136) 2026-04-30 11:10:14 +00:00
.config Increase timeout for test_random_blocks (#50724) 2026-03-04 12:25:12 -05:00
.factory Add humanizer skill for AI writing pattern detection (#50021) 2026-02-24 14:58:52 -06:00
.github Duplicate Bot: Add more context for triagers (V3) (#57647) 2026-05-25 14:29:13 +00:00
.zed agent: Remove old edit file tool (#55612) 2026-05-04 09:54:39 +00:00
assets vim: Fix g i and g a in Helix mode to match Helix semantics (#57621) 2026-05-26 14:06:15 +00:00
ci Move Nightly release to gh-workflow (#41349) 2025-10-28 13:57:23 -06:00
crates Fix flicker of pushed-off sticky project header in threads sidebar (#57529) 2026-05-26 14:41:26 +00:00
docs Support LSP document links (#56011) 2026-05-26 07:09:47 +00:00
extensions docs: Fix typo in EXTRACTION.md (#55106) 2026-04-28 19:18:44 +00:00
legal Update legal docs to reflect new terms of service (#50530) 2026-03-02 12:36:31 -08:00
nix nix: Fix build on x86_64-linux (#52917) 2026-04-01 20:50:04 +02:00
script Duplicate Bot: Handle failure modes better (#57663) 2026-05-25 16:49:51 +00:00
tooling extension_ci: Bump extension CLI version to 2a00db0 (#57098) 2026-05-19 07:01:38 +00:00
.git-blame-ignore-revs Add PR 50413 to .git-blame-ignore-revs (#50421) 2026-03-01 00:50:33 +01:00
.gitattributes windows: Make sure zed.sh using the correct line ending (#37650) 2025-09-05 16:25:55 +00:00
.gitignore build: Allow pinning of webrtc build artifacts (✈️ edition) (#55336) 2026-05-04 06:22:51 +00:00
.mailmap Update .mailmap (#47413) 2026-01-22 23:57:26 +05:30
.prettierrc ci: Add check for formatting default.json (#30034) 2025-05-06 18:55:26 +00:00
.rules Update AI rules to reflect that AsyncApp updates are now infallible (#54818) 2026-04-24 19:04:32 +00:00
AGENTS.md ai: Symlink an AGENTS.md file to .rules (#45939) 2026-01-19 15:29:42 +01:00
Cargo.lock buffer_diff: Remove git2 dependency from buffer_diff (#56013) 2026-05-26 14:28:02 +00:00
Cargo.toml Support local devcontainer features (#55225) 2026-05-26 07:13:00 +00:00
CLAUDE.md Initial .rules file for agent with symlinks for other rules file paths (#29014) 2025-04-17 23:41:23 +00:00
clippy.toml Revert "Revert scheduler update (#46659)" (#46671) 2026-01-14 07:19:13 +00:00
CODE_OF_CONDUCT.md Remove community content from docs and point to zed.dev (#19895) 2024-10-29 09:44:58 -04:00
compose.yml Remove Postgres and stripe-mock from Docker Compose (#48313) 2026-02-04 03:42:58 +00:00
CONTRIBUTING.md Add Zed Feature Process document (#50747) 2026-03-06 14:14:53 -08:00
debug.plist WIP 2023-12-14 09:25:14 -07:00
default.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
Dockerfile-collab Bump Rust version to 1.94 (#51086) 2026-03-30 09:06:59 +00:00
Dockerfile-collab.dockerignore ci: Move collab to Dockerfile-collab (#18515) 2024-09-30 16:14:26 -04:00
Dockerfile-cross.dockerignore Add remote server cross compilation (#19136) 2024-10-12 23:23:56 -07:00
Dockerfile-distros Removal of mold/wild scripts and mentions in docs (#53078) 2026-04-08 21:20:02 +03:00
Dockerfile-distros.dockerignore Support More Linux (#18480) 2024-09-30 17:46:21 -04:00
flake.lock Rust 1.95 (#55104) 2026-04-29 10:27:47 +00:00
flake.nix Try to improve nix caching (#48297) 2026-02-03 20:31:02 -07:00
GEMINI.md Add missing GEMINI.md rule file for gemini-cli (#38885) 2025-10-02 09:47:29 -04:00
LICENSE-AGPL Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-APACHE Update license year (#24191) 2025-02-04 09:02:59 -05:00
LICENSE-GPL Licenses: change license fields in Cargo.toml to AGPL-3.0-or-later. (#5535) 2024-01-27 13:51:16 +01:00
livekit.yaml Add LiveKit server to Docker Compose (#7907) 2024-02-16 10:49:48 -05:00
lychee.toml ci: Check for broken links (#30844) 2025-06-06 09:39:35 +00:00
Procfile Update instructions for local collaboration (#35689) 2025-08-06 11:10:28 -07:00
Procfile.all Add agent thread sharing (#46140) 2026-01-06 12:49:51 -08:00
Procfile.web Remove PostgREST (#41299) 2025-10-27 13:27:59 -04:00
README.md Add sponsor button to main Zed repo (#46807) 2026-01-14 10:38:51 -06:00
renovate.json Remove workspace-hack (#40216) 2025-10-17 18:58:14 +00:00
REVIEWERS.conl Remove past reviewer (#51767) 2026-03-17 16:34:35 +00:00
rust-toolchain.toml Rust 1.95 (#55104) 2026-04-29 10:27:47 +00:00
rustfmt.toml nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
shell.nix nix: Use flake-parts, partitions, and treefmt-nix (#45321) 2026-02-02 14:26:42 +00:00
typos.toml fuzzy_nucleo: Add strings module and route several pickers through it (#54123) 2026-04-20 14:41:29 +02:00

Zed

Zed CI

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:

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

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 specified error for a crate you've created? If so, add publish = false under [package] in your crate's Cargo.toml.
  • Is the error failed to satisfy license requirements for 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 the accepted array in script/licenses/zed-licenses.toml.
  • Is cargo-about unable to find the license for a dependency? If so, add a clarification field at the end of script/licenses/zed-licenses.toml, as specified in the cargo-about book.

Sponsorship

Zed is developed by Zed Industries, Inc., a for-profit company.

If youd 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.