Tool apply_patch messes up line endings in windows

[Stefan-Bachmann]

Description

Editing files with Opencode messes up line endings in files in Windows.

Per default line endings in Windows are CRLF. However, opencode introduces LF line endings when using the builtin tool apply_patch. As I'am this problem occurs also for tool write.

Afaik a suitable merge request: #20217
This issue is related to #6348 which has been closed automatically. However, it is still a annoying issue.

Besides that I want to thank you for the amazing project!

Plugins

No response

OpenCode version

1.17.20

Steps to reproduce

1. Use an existing code file with CRLF line endings.
2. I use GPT 5.4 as model
3. Use a suitable prompt such that a code line will be added.
4. This new line should have LF endings instead of CRLF.

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

Windows Terminal

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Edit tool messes with whitespace / line endings in Windows #6348: Edit tool messes with whitespace / line endings in Windows (closed, but you already referenced this one)
• The issue of being unable to create files in Windows (CR LF) format #18616: The issue of being unable to create files in Windows (CR LF) format
• The file generated by AI agent's CRLF and LF line breaks Problems #16770: The file generated by AI agent's CRLF and LF line breaks Problems
• [BUG] Write tool produces LF-only line endings on Windows, breaking batch (.bat) files #31224: Write tool produces LF-only line endings on Windows
• [BUG] write tool produces LF-only .bat/.cmd files on Windows and doesn't handle non-UTF-8 code pages #31276: Write tool produces LF-only .bat/.cmd files on Windows

Several of these were closed. If the underlying issue has not been fixed, it may be worth linking to those threads or reopening the most relevant one rather than filing a new report.

[Stefan-Bachmann]

As described: It is directly related to #6348 However, this issue has been closed automatically but not resolved.
A related merge request is #20217

[Mac-Moneysac]

This issue is still present in 1.18.16 - It is really annoying :(

[Mac-Moneysac]

#45931 might resolve this issue, too

[Stefan-Bachmann]

This issue is still a thing in opencode v2 :(

[jeckyhl]

I ran into this issue too, and a number of my AI sessions dragged on unnecessarily while the model was trying to restore CRLF line endings across all the modified files.

FWIW, I’m currently using a plugin to work around the shortcomings of the native OpenCode tool.

The plugin only works for changes made within the OpenCode session working directory.

https://github.com/jeckyhl/jeckyhl-opencode-plugins

[Mac-Moneysac]

Hi,
I've solved it with a plugin, too: https://github.com/Mac-Moneysac/opencode-fix-line-endings

It preserves line endings and ensures typical platform line endings for new files. It is available via npm such that one can easily use it via config. It is compatible with V2.

However, I would prefer if opencode fixes this issue.

Thank you for your support ☺️!