[BUG] Command history dispatch matches wrong skill when one skill name is a prefix of another

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?

When two skills are installed where one name is a prefix of the other, recalling a command from history via the up-arrow key causes the wrong (longer-named) skill to be dispatched — even though the input box displays the correct command before Enter is pressed.

What Should Happen?

foo is dispatched with argument 123.

Error Messages/Logs

Steps to Reproduce

1. Install two skills where one name is a prefix of the other, e.g.:

• foo
• foo-bar

1. Run /foo 123 by typing it and pressing Enter. It works correctly.
2. Press the up-arrow key to recall /foo 123 from history. The input box displays exactly /foo 123.
3. Press Enter.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

I'm using the VS Code extension version - 2.1.72

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

Environment

Extension: Claude Code (VS Code)
OS: RHEL 9

• The substitution happens at dispatch time, after the user submits the (correct) command. The input box shows the right text.
• Typing /foo 123 fresh and pressing Enter always works correctly.
• The bug only reproduces when the command is recalled from history via up-arrow.
• Likely cause: history replay re-resolves the skill name by prefix match rather than replaying the exact skill name that was originally invoked. The longer match (foo-bar) wins over the exact match (foo).