[BUG] Ctrl-Z needlessly trapped.

[cruftyoldsysadmin]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

When I try to use Ctrl-Z to put Claude in the background, I get this superfluous message, ctrlz gets trapped, and I have to type it a second time for it to kick in. This has zero value to anybody. We all know how ctrl-z works. Please revert this change.

Claude Code has been suspended. Run `fg` to bring Claude Code back.
Note: ctrl + z now suspends Claude Code, ctrl + _ undoes input.
^Z

What Should Happen?

Claude should respect how Unix has worked for over 60 years now. There is no value or reason whatsoever to trap CtrlZ and put an interim, function-less intermediary.

Error Messages/Logs

Steps to Reproduce

Type Ctrl Z

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.0.75

Claude Code Version

2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Just because you CAN do something does not mean that you SHOULD do something.

[github-actions]

Found 3 possible duplicate issues:

1. Make Claude Code better behaved w.r.t. job control signals (including SIGTSTP) #588
2. [BUG] Claude Code chat interface intercepts all ctrl+ key combinations, preventing terminal shortcuts #6807
3. [Bug] Terminal raw mode not restored on Ctrl-Z suspend in Ghostty #14822

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[sambostock]

As mentioned in #16895 (comment), this can be worked around in Ghostty with the following config:

keybind = ctrl+z=text:\x1a

[cruftyoldsysadmin]

@sambostock I can't believe anybody would think that's a good idea. wtf.

[github-actions]

This issue has been inactive for 30 days. If the issue is still occurring, please comment to let us know. Otherwise, this issue will be automatically closed in 30 days for housekeeping purposes.

[github-actions]

Closing for now — inactive for too long. Please open a new issue if this is still relevant.

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.