[BUG] Edit tool incorrectly inserts \n instead of newlines

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [x] Other: Claude Code
• Claude CLI version: 1.0.77
• Operating System: Ubuntu 24.04.2 LTS
• Terminal: bash

Bug Description

• Edit tool incorrectly handles newlines: When using \n in replacement strings, the tool inserts literal \n characters instead of actual newlines
• Expected behavior: \n should be converted to actual newline characters
• Impact: Creates malformed code that requires manual cleanup

Model • /model
L opusplan (claude-opus-4-1-20250805)