/undo command not being recognized

Resolved 💬 3 comments Opened Jan 7, 2026 by petrosgeor Closed Jan 7, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor) responded on this thread — see the highlighted reply below.

What version of Codex is running?

0.79.0

What subscription do you have?

pro

Which model were you using?

_No response_

What platform is your computer?

_No response_

What issue are you seeing?

I've set undo=true in the config.toml of codex, but it seems like the undo command is not recognized.

What steps can reproduce the bug?

Uploaded thread: 019b9817-5571-7dc0-b3d4-a686d844c413

What is the expected behavior?

_No response_

Additional information

_No response_

View original on GitHub ↗

3 Comments

github-actions[bot] contributor · 7 months ago

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

  • #8804

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etraut-openai contributor · 7 months ago

The experimental /undo command has been removed in recent versions. It did not see much usage, and its implementation was causing problems for many users — even those who didn't use the feature.

If you'd like to see a feature like this, please create or upvote a feature request with details about what you'd like to see. We are open to adding such functionality in the future, but it will need to be redesigned to avoid the problems of the previous implementation.

zhy19950705 · 7 months ago

i need /undo same