Kirill Bulatov 4513f52f31 Do not eagerly load entire file contents into memory when decoding it (#45971)
When working on https://github.com/zed-industries/zed/pull/45969 I've
noticed that whenever I try to open a binary file

```
~/Desktop/svenska ❯ du -ha "Svenska А2B1. 07.09.2025 [u6qEIe9-COc].mkv"
456M	Svenska А2B1. 07.09.2025 [u6qEIe9-COc].mkv
```

Zed allocates all its size

<img width="214" height="104" alt="image"
src="https://github.com/user-attachments/assets/e67ad522-b8a4-4e8e-9961-13030a34df1c"
/>

<img width="345" height="154" alt="image"
src="https://github.com/user-attachments/assets/ea691020-0d02-4acc-88c3-476385f309bb"
/>

only to show me this:

<img width="979" height="677" alt="image"
src="https://github.com/user-attachments/assets/ff91cc9d-eb59-4cee-b06f-5758acd1bd5d"
/>

Given that our existing code checks first 1024 bytes to decide whether
to bail on a binary file or not, this seems very wasteful — hence,
adjusted the code to read the "header" and check that first, and only
continue reading the entire file after the checks are successful.

I suspect this should also help the project search, esp. the crashes and
memory usage during that when many binary files are present?

Release Notes:

- Improved Zed's memory usage when attempting to open binary files
2026-01-04 21:40:42 +00:00
2025-10-21 09:58:26 +02:00
2025-09-23 16:49:45 +00:00
2025-12-17 16:14:57 +00:00
2026-01-04 12:48:18 +00:00
2025-10-27 13:27:59 -04:00
WIP
2023-12-14 09:25:14 -07:00
2025-03-10 01:06:11 -07:00
2024-09-30 17:46:21 -04:00
2025-12-17 01:42:04 +01:00
2025-02-04 09:02:59 -05:00
2025-02-04 09:02:59 -05:00
2025-10-27 13:27:59 -04:00
2025-10-17 18:58:14 +00:00
2025-03-10 01:06:11 -07:00

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.
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