Windows CLI and Desktop override core.autocrlf and core.symlinks, causing incorrect Git diffs

[PandaYuuHa]

Description

On Windows, both the bundled CLI and Desktop clients invoke Git with:

-c core.autocrlf=false
-c core.symlinks=true

These command-scoped options override system, global, and repository-local Git configuration. This conflicts with common Git for Windows settings such as:

core.autocrlf=true
core.symlinks=false

As a result, OpenCode may report line-ending-only changes that do not appear when Git is invoked normally. It may also force symlink behavior that is unsupported or explicitly disabled on the user's system.

Plugins

No plugins

OpenCode version

1.18.3

Steps to reproduce

1. Configure Git for CRLF working-tree files with symlinks disabled:

   git config --global core.autocrlf true
   git config --global core.symlinks false

2. Clone or check out a repository using Git for Windows.

3. Confirm that the repository is clean:

   git status
   git diff

4. Open the repository in OpenCode CLI or Desktop.

5. Trigger an internal Git operation, such as status inspection, diff generation, review, snapshot capture, or snapshot restore.

6. Observe line-ending-only changes or other differences not reported by normal Git commands.

The behavior can be approximated with:

git -c core.autocrlf=false -c core.symlinks=true diff

Screenshot and/or share link

Operating System

Windows 10

Terminal

Windows Terminal, Powershell 7

[github-actions]

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

• [Bug] Git diff shows unmodified files as "Modified" on Windows (CRLF + symlink type changes) #27276: Same root cause — Windows Git layer hardcodes core.autocrlf=false and core.symlinks=true, causing unmodified files to appear as modified in diffs. That issue also includes a root cause analysis and proposed fix.