claude-code - 💡(How to fix) Fix [BUG] Claude Code repeatedly generates invalid tool invocations [4 comments, 2 participants]

Bash(flutter analyze --no-pub 2>&1 | grep -E "error|warning" | grep -v "test\") It fails with this error message: grep: Trailing backslash And then CC fixes the error with this: Bash(flutter analyze --no-pub 2>&1 | grep -E "^error")

Error Messages/Logs

TL;DR

The issue can be mitigated by modifying the generated tool invocations to avoid trailing backslashes and ensuring proper escaping of special characters.

Guidance

• Investigate the Claude Code generation logic to identify why it produces invalid tool invocations with trailing backslashes.
• Verify that the grep command is correctly escaping special characters, such as backslashes, to prevent errors.
• Consider adding input validation or sanitization to the Claude Code tool invocation generation to prevent similar issues in the future.
• Review the differences between the initial invalid invocation and the corrected version to understand the necessary changes.

Example

No code snippet is provided as the issue does not contain sufficient information to create a specific example.

Notes

The root cause of the issue is unclear, but it appears to be related to the generation of tool invocations by Claude Code. The provided example suggests that the issue may be related to improper escaping of special characters.

Recommendation

Apply workaround: Modify the generated tool invocations to avoid trailing backslashes and ensure proper escaping of special characters, as seen in the corrected version of the grep command.