Slash commands with hyphens in filename not recognized (v2.0.76)

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?

Custom slash commands defined in .claude/commands/ with hyphens in the filename are not recognized by Claude Code CLI v2.0.76. Commands using underscores work correctly.

What Should Happen?

Both docs-sync.md and docs_sync.md should be recognized as valid command filenames, as official documentation shows hyphenated examples like security-review.md, fix-issue.md, and review-pr.md.

Custom slash commands in .claude/commands/ with hyphens are NOT recognized:

• docs-sync.md → /docs-sync NOT FOUND
• docs_sync.md → /docs_sync WORKS

Error Messages/Logs

Unknown slash command: docs-sysnc

Steps to Reproduce

1. Create .claude/commands/docs-sync.md with valid frontmatter:
2. ```yaml
3. ---
4. description: Sync documentation
5. ---
6. ```
7. 2. Try to invoke /docs-sync → command not found
8. 3. Rename to .claude/commands/docs_sync.md
9. 4. Invoke /docs_sync → works correctly

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

v2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Workaround: Use underscores instead of hyphens in command filenames.

Note: Documentation and examples should be updated to reflect actual behavior, OR hyphens should be supported as shown in docs.