Swiss German keyboard: Option + G (@ symbol) not working in CLI input

Preflight Checklist

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

What's Wrong?

When using Claude Code CLI with a Swiss German keyboard layout, the key
combination Option + G (which produces the @ symbol) does not work in the
input field. The same key combination works correctly in all other macOS
applications.

Environment:

• OS: macOS (Darwin 25.0.0)
• Computer: MacBook Air
• Keyboard Layout: Swiss German
• Locale: en_CH (English - Switzerland)
• Terminal: TERM=xterm-256color, LANG=C.UTF-8
• Claude Code Version: (current version)

Steps to Reproduce:

1. Set keyboard layout to Swiss German in macOS System Settings
2. Launch Claude Code CLI
3. Try to type @ symbol using Option + G
4. The symbol does not appear in the Claude Code input

Expected Behavior:
The @ symbol should be produced when pressing Option + G, as it does in
all other macOS applications.

Actual Behavior:
Nothing happens when pressing Option + G in Claude Code CLI input. The key
combination appears to be intercepted or not properly passed through.

Workaround:
Currently using copy/paste or the macOS Character Viewer (Control + Cmd +
Space) to input the @ symbol.

Additional Context:

• The issue is specific to Claude Code CLI
• Option + G works correctly in TextEdit, Notes, browsers, and other

terminal applications

• This affects the ability to type email addresses and other text

requiring the @ symbol

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What Should Happen?

the @ symbols appears exaktly as it did writing this report

Error Messages/Logs

Steps to Reproduce

see main report

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.14 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

the report is generated by Claude itself. If the issue is known I hope Claude would have told me