can't AutoOpen namespace-qualified modules

[jcmrva]

The AutoOpen attribute appears to be ignored on top-level modules that include a qualified namespace.

Repro steps

Utils.fs

[<AutoOpen>]
module Example.Utils

let tee fn v = fn v v

> Library.fs

module Say

let hello name = name |> tee (printfn "Hello %s") // err |> ignore

**Expected behavior**

Compiles.

**Actual behavior**

FS0039 compile error `The value or constructor 'tee' is not defined.`

**Known workarounds**

- Explicitly open the module.
- Fully qualify module members.
- Don't use qualified-namespaces.

**Related information**

* OS: Win10
* .NET 6 and .NET 7 (7.0.100-preview.4.22252.9)
* Ionide and .NET CLI

[auduchinok]

@jcmrva The attribute is only applied to the module itself, not to the containing namespace. The language spec says that this attribute will open Utils module automatically when a Example namespace is opened.

[dsyme]

@auduchinok Thanks, yes, this is correct - this is by design