Copy last assistant message does not respect revert operation

[assagman]

Description

"Copy last assistant message" does not respect revert operation.

Reverted messages are preserved for "redo" operation, but when users want to copy the last assistant message after reverting some messages, it copies the first reverted message (the last message in the conversation history if it wouldn't reverted).

OpenCode version

1.0.164

Steps to reproduce

1. send message_1
2. send message_2
3. send message_3
4. undo
5. undo
6. copy last message

Step 6 copies message_3 but I think the expected behavior is copying message_1 because all the messages after message_1 were reverted.

Screenshot and/or share link

No response

Operating System

macOS Tahoe 26.2 arm64

Terminal

Ghostty

[assagman]

PR: #5705

[github-actions]

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

• [FEATURE]: "revert message" should place reverted message in the prompt input #4186: "revert message" should place reverted message in the prompt input (related issue about revert operation behavior)
• feature request: Add "copy" button to tool results and assistant messages #658: feature request: Add "copy" button to tool results and assistant messages
• Add a /copy command to copy latest message (or allow scrolling while selecting text) #2118: Add a /copy command to copy latest message (or allow scrolling while selecting text)

These issues discuss related copy and revert functionality that may help provide context for your specific case.