Diff is not shown on CodeCompanion integration with OpenCode

[LazyYuuki]

Description

Refer to this discussion here from OpenCode Discussion:

olimorris/codecompanion.nvim#2114 (comment)

This user is having the same exact problem as I do. When I tried to use OpenCode through ACP in CodeCompanion.nvim after the agent made the change to all the file, when I do Super Diff, it just said that no edits were made even though file has changed. There is no prompt pop up to let me approve the diff also.

=> The author from OpenCode said that he believe it is because OpenCode doesn't send back the "diff" info.

How could I proceed to solve this problem?

Plugins

ACP integration with CodeCompanion

OpenCode version

1.1.48

Steps to reproduce

1. Open CodeCompanion and set up to use OpenCode in "chat"
2. Ask agent to modify 5 files randomly
3. Agents modified 5 files without asking for any approval or show any diff
4. After modification pressing "gD" in buffer to open SuperDiff is returned with No Edit were made

Screenshot and/or share link

No response

Operating System

macOS 15.7.3

Terminal

Ghostty

[github-actions]

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

• Web UI reports "No changes" even after agent has made changes #11062: Web UI reports 'No changes' even after agent has made changes - Same root cause where changes aren't reflected back to the UI
• File changes in the desktop version are not reflected in the file list #11538: File changes in the desktop version are not reflected in the file list - Desktop/web version of the same issue
• [BUG] TUI session_diff tracking not working on Windows - files remain empty #10716: TUI session_diff tracking not working on Windows - files remain empty - Directly relates to missing diff data that OpenCode should send back
• plugins: file.edited event missing before text, hard to extract edit locations #5171: plugins: file.edited event missing before text - Addresses the broader issue that OpenCode's events don't provide proper diff/change information
• JetBrains ACP hangs indefinitely on windows #7632: The JetBrains ACP invocation gets stuck in the 'thinking' state - Another ACP integration issue with state change communication

The root cause appears to be that OpenCode doesn't provide diff/change information back through the ACP protocol, particularly for editor integrations.

Feel free to ignore if none of these address your specific case.

[MaxDillon]

@LazyYuuki does this change resolve your issue? In order for the effect to work, I believe you will also need to go into you opencode.json and expicitly set

{
  "$schema": "https://opencode.ai/config.json",
  "permissions": {
    "edit": "ask"
  },
  ...
}

[MaxDillon]

@rekram1-node have you gotten a chance to look yet?

[github-actions]

To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.