在 Window 环境下 AI 使用 PowerShell 修改文件添加中文内容会有乱码出现

[jianbinJava]

Description

在 Window 环境下 AI 使用 PowerShell 修改文件添加中文内容会有乱码出现, 原因是 Windows下的 PowerShell 默认编码为 GBK 导致。每次都要提醒，挺麻烦的， 望紧急修复。

Plugins

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OpenCode version

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Steps to reproduce

1. 输入提示词，叫修改功能，
2. AI 自动修改完代码后， 把原来的文内容替换后，就变成乱码出现了。

Screenshot and/or share link

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Operating System

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Terminal

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[github-actions]

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

• fix: PowerShell output encoding for non-ASCII characters on Windows #23636: PowerShell output encoding for non-ASCII characters on Windows (same root cause)
• CLI shell uses GBK encoding by default, causing Chinese characters garbled; want to set default encoding to UTF-8 #30055: CLI shell uses GBK encoding by default, causing Chinese characters garbled (very similar issue)
• Windows: bash tool cannot correctly handle cmd.exe GBK output #26882: Windows bash tool cannot correctly handle GBK output (related encoding issue)

Please review those issues and consider adding your details there if they cover the same problem.

[realsharpswing]

同样遇到这个问题。我让opencode写了个 OpenCode 插件自动检测 GBK 文件并转换为 UTF-8，实测可行，分享出来：
https://github.com/realsharpswing/opencode-encoding-guard
原理是拦截 read 和 edit 工具的 hook，编码检测后自动修正，对 LLM 透明。希望对你有帮助。
PowerShell对话过程中也会显示乱码, 让opencode自己查找方案在agents.md中添加规则也解决了. 你可以试试让opencode自己分析提供方法.