[BUG] Unhandled Promise Rejection: 'Bad substitution: re.test' Error in Non-interactive Mode

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [x] Other: Claude Code CLI
• Claude CLI version: 0.2.66 (Claude Code)
• Operating System: Ubuntu 24.04.2 LTS
• Terminal: Bash

Bug Description

While running Claude Code in non-interactive mode, encountered an unhandled promise rejection with the error "Bad substitution: re.test" which appears to be related to regular expression handling.

Steps to Reproduce

1. Ran Claude Code in non-interactive mode (python script):

cmd = f"claude -p --verbose --output-format stream-json --dangerously-skip-permissions @claude_prompt.txt >> '{transcript_path}'"
subprocess.run(cmd, shell=True, timeout=CLAUDE_TIMEOUT, check=False)

1. Unfortunately, i cannot directly recreate the prompt.

Expected Behavior

Command should complete successfully without unhandled promise rejections.

Actual Behavior

Received an unhandled promise rejection with the following stack trace:

Error: Bad substitution: re.test
    at U (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:52:10745)
    at file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:52:11404
    at Array.map (<anonymous>)
    at $O4 (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:52:10483)
    at Object.I (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:52:11568)
    at TU (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:822:717)
    at Object.isReadOnly (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1125:2904)
    at file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1562:2475
    at Array.reduce (<anonymous>)
    at bv1 (file:///home/ubuntu/.npm-global/lib/node_modules/@anthropic-ai/claude-code/cli.js:1562:2398)