Files
zed/crates/collab
Chris Biscardi b48281a362 Disable format-on-save by default (#59710)
# Objective

Prevent the unexpected modification of files which do not have
established formatting conventions.

Enabling format-on-save by default can cause changes in ecosystems that
don't have established official formatting conventions, or when the
formatting conventions came later through new tools (like JavaScript).

fixes #59427

## Solution

This PR inverts the default, choosing to disable format-on-save by
default, and allowing it to be enabled by users at a global or language
level for any language which has an official formatter. However, any
ecosystem which has an official formatter has been left enabled.

This means languages like Rust, Go, and Zig have `format_on_save`
enabled because they come with official formatting tools, while
JavaScript, C/C++, and Markdown have it disabled by default.

For existing users, this means their custom configurations will stay,
but any values that were previously "default" will be updated.

## Testing

- open a file for the language being tested (ex: `python`)
- formatting should only be enabled if the default for the *language* is
enabled
- formatting can be enabled or disabled at the language level or the
global level in the settings

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [x] Unsafe blocks (if any) have justifying comments
- [x] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [x] Tests cover the new/changed behavior
- [x] Performance impact has been considered and is acceptable

---

Release Notes:

- Disable format-on-save by default, except for languages with official
formatters
2026-06-29 07:57:58 +00:00
..
2026-06-26 20:50:37 +00:00

Zed Server

This crate is what we run at https://collab.zed.dev.

It contains our back-end logic for collaboration, to which we connect from the Zed client via a websocket after authenticating via https://zed.dev, which is a separate repo running on Vercel.

Local Development

Database setup

Before you can run the collab server locally, you'll need to set up a zed Postgres database. Follow the steps sequentially:

  1. Ensure you have postgres installed. If not, install with brew install postgresql@15.
  2. Follow the steps on Brew's formula and verify your $PATH contains /opt/homebrew/opt/postgresql@15/bin.
  3. If you hadn't done it before, create the postgres user with createuser -s postgres.
  4. You are now ready to run the bootstrap script:
script/bootstrap

This script will set up the zed Postgres database, and populate it with some users. It requires internet access, because it fetches some users from the GitHub API.

The script will create several admin users, who you'll sign in as by default when developing locally. The GitHub logins for the default users are specified in the seed.default.json file.

To use a different set of admin users, create crates/collab/seed.json.

{
  "admins": ["yourgithubhere"],
  "channels": ["zed"]
}

Testing collaborative features locally

In one terminal, run Zed's collaboration server and the livekit dev server:

foreman start

In a second terminal, run two or more instances of Zed.

script/zed-local -2

This script starts one to four instances of Zed, depending on the -2, -3 or -4 flags. Each instance will be connected to the local collab server, signed in as a different user from seed.json or seed.default.json.

Deployment

We run two instances of collab:

Both of these run on the Kubernetes cluster hosted in Digital Ocean.

Deployment is triggered by pushing to the collab-staging (or collab-production) tag in GitHub. The best way to do this is:

  • ./script/deploy-collab staging
  • ./script/deploy-collab production

You can tell what is currently deployed with ./script/what-is-deployed.