Golang x/pkgsite: unable to publish a package with : in a file in testdata

What is the URL of the page with the issue?

https://pkg.go.dev/gitlab.com/tozd/go/fun

What is your user agent?

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0

Screenshot

No response

What did you do?

I am trying to publish a new version of my package. So I run:

GOPROXY=proxy.golang.org go list -m "gitlab.com/tozd/go/fun@v0.2.0

What did you see happen?

That the version is published and that I see a new version at https://pkg.go.dev/gitlab.com/tozd/go/fun.

What did you expect to see?

go: gitlab.com/tozd/go/fun@v0.2.0: reading https://proxy.golang.org/gitlab.com/tozd/go/fun/@v/v0.2.0.info: 404 Not Found
    server response:
    not found: create zip: testdata/expected-llama3:8b/1.txt: malformed file path "testdata/expected-llama3:8b/1.txt": invalid char ':'
    testdata/expected-llama3:8b/10.txt: malformed file path "testdata/expected-llama3:8b/10.txt": invalid char ':'
    testdata/expected-llama3:8b/11.txt: malformed file path "testdata/expected-llama3:8b/11.txt": invalid char ':'
    testdata/expected-llama3:8b/12.txt: malformed file path "testdata/expected-llama3:8b/12.txt": invalid char ':'
    testdata/expected-llama3:8b/13.txt: malformed file path "testdata/expected-llama3:8b/13.txt": invalid char ':'
    [Truncated: too long.]

The reason is that in testdata directory I have a sub-directory with : in it. It seems this breaks the publishing process?

I would expect that testdata directory is ignored by Go.

Comment From: seankhliao

colon is a reserved character for NTFS, tesdata is included in modules.

Comment From: mitar

What is testdata included in modules? That can lead to huge modules. I was under impression that testdata is ignored by Go. It says in go help test:

The go tool will ignore a directory named "testdata", making it available
to hold ancillary data needed by the tests.

So it seems go tool is not ignoring it. I think that should be at least documented if not fixed (by ignoring it for real).

Comment From: ianlancetaylor

go test ignores testdata, as do commands that look for packages in the hierarchy of directories. But the files in testdata are expected to be used by tests, so they are part of a module.