Copilot fails to create files in a workspace path that contains 8.3 names #278527
Description
- Copilot Chat Extension Version: 0.33.2
- VS Code Version: 1.106.1
- OS Version: Windows 11
- Feature (e.g. agent/edit/ask mode): agent
- Selected model (e.g. GPT 4.1, Claude 3.7 Sonnet): gpt-4.1
- Logs: available on demand, ping me on Teams/mail @ MSFT
Steps to Reproduce:
- Get a path with a segment longer than 8 chars
- Shorten the long segment to 8.3 convention, eg.
somelongsegment>somelo~1 - Open the path in VSCode:
code c:\... - Configure GHCP to agent mode with gpt-4.1
- Use a prompt similar to the following:
Create a simple web chat application using Node.js for the backend and any web frontend technology. The app should allow users to send messages and receive responses from a large language model (LLM). The chat interface should display a conversation history and allow users to type and send messages. Use a publicly available LLM API for generating responses.
create_file tool calling fails with:
ERROR while calling tool: Path appears to use short filename format (8.3 names): c:\\SOMELO~1\\HAjWPM\\server.js. Please use the full path.\nPlease check your input and try again.
Same issue occurs in the list_dir tool:
ERROR while calling tool: Directory c:\\SOMELO~1\\HAjWPM is outside of the workspace and can't be read\nPlease check your input and try again.