claude-code - 💡(How to fix) Fix [BUG] PostToolUse hook blocks Edit diff rendering in CLI [3 comments, 3 participants]

TL;DR

The CLI should be modified to render the diff immediately, without waiting for the PostToolUse hook to complete, to match the behavior of the VS Code extension.

Guidance

• Investigate the current implementation of the PostToolUse hook in the CLI to understand why it withholds the diff until the hook exits.
• Consider introducing a mechanism to render the diff immediately, while allowing the hook to run in the background and display its output afterwards.
• Review the related issue #47692 for potential insights or solutions that could be applied to this problem.
• Test any proposed changes with a long-running PostToolUse hook to ensure the diff is displayed promptly and the hook output appears as expected.

Example

No code snippet is provided as the issue does not contain sufficient technical details to generate a specific example.

Notes

The solution may require significant changes to the CLI's architecture or the PostToolUse hook implementation, and may involve trade-offs between functionality and performance.

Recommendation

Apply workaround: Modify the CLI to render the diff immediately, without waiting for the PostToolUse hook to complete, to improve the user experience and match the behavior of the VS Code extension. This approach is recommended because it addresses the primary issue of the CLI appearing frozen during long-running hooks.