[BUG]

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?

Plugin commands that use a namespace prefix AND contain hyphens or underscores in the command name don't appear in the / autocomplete dropdown. The namespace:command format breaks autocomplete when the command portion contains separators.

• /namespace:hello → appears ✅
• /namespace:planreview → appears ✅
• /namespace:plan-review → does NOT appear ❌
• /namespace:plan_review → does NOT appear ❌

The commands still load and can be invoked via the Skill tool — only the autocomplete UI is affected.

This is distinct from #15852 (local .claude/commands/ hyphens only, underscores work). This issue is specific to the namespace:command format in plugin
commands.

The claude-plugins-official marketplace is unaffected — plugin-dev:create-plugin appears correctly.

What Should Happen?

All valid commands should appear in autocomplete regardless of hyphens/underscores in filenames.

Error Messages/Logs

Steps to Reproduce

1. Create a marketplace plugin (e.g., engineer) with commands in commands/:

• hello.md
• plan-review.md
• plan_review.md
• planreview.md

1. Install the plugin, restart Claude Code
2. Type / to open autocomplete dropdown
3. Observe:

• engineer:hello → appears ✅
• engineer:planreview → appears ✅
• engineer:plan-review → does NOT appear ❌
• engineer:plan_review → does NOT appear ❌

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.29

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

• Related: #15852 (local commands, hyphens only)
• plugin-dev:create-plugin from claude-plugins-official works correctly — suggesting official marketplace plugins are handled differently
• Workaround: use single-word command filenames (e.g., planreview.md)