[BUG] Commands in plain text output are wrapped with real newlines, making copy-paste impossible

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 Claude outputs a command as plain text (no code block), the Claude Code terminal wraps long
lines by inserting real newline characters rather than visual-only wrapping. When the user copies
and pastes the command, it arrives in the terminal split across multiple lines, breaking it
entirely.

The same problem affects code blocks: continuation lines in a multi-line code block have leading
spaces inserted, which also break commands on paste.

The formatting issue is visible in the description above as this was generated by CC and copied/pasted unmodified.

What Should Happen?

Expected behaviour: Long lines should wrap visually only. Copy-paste should produce the full
command as a single unbroken string.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Code terminal
2. Ask Claude: "Print this as plain text: docker run --rm --env-file /root/wallboxTeslamate/.env

-v /root/wallboxTeslamate:/scripts root-wallbox-poller python /scripts/explore_sessions.py"

1. Copy the output and paste it into a terminal window
2. Observe that the command arrives split across two lines at the point where it wrapped in the

Claude Code display

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.170 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_