[BUG]: ##vso[artifact.upload artifactname=Test]C:\test.txt truncates file name on upload

[JohnSchmeichel]

What happened?

Using the artifact.upload logging command is lopping off the first character in the file name if the file being uploaded is at the root directory.

echo Test > C:\test.txt
echo ##vso[artifact.upload artifactname=Test]C:\test.txt

Pipeline logs:

Async Command Start: Upload Artifact
Uploading 1 files
Max dedup parallelism: 192
Building file tree
Uploaded 0 out of 7 bytes.
Uploaded 7 out of 7 bytes.
Associating files
Total files: 1 ---- Associated files: 0 (0%)
File upload succeed.
Upload 'C:\test.txt' to file container: '#/24864114/Test'
Associated artifact 67 with build 626559
Async Command End: Upload Artifact

Pipeline artifacts:

Versions

3.220.0 / Microsoft Windows Server 2022 10.0.20348

Environment type (Please select at least one enviroment where you face this issue)

• Self-Hosted
• Microsoft Hosted
• VMSS Pool
• Container

Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

Azure DevOps Server Version (if applicable)

No response

Operation system

No response

Version controll system

No response

Relevant log output

No response

[max-zaytsev]

@JohnSchmeichel thanks for reporting!
We are working on more prioritized issues at the moment but will get back to this one soon.