Multiple selectors on enum variant

[cornytrace]

Consider the following code:

#[derive(Nom)]
#[nom(LittleEndian, Selector = "FileType")]
pub enum FileBody {
    #[nom(Selector = "FileType::DIR")]
    Dir(DirEntry),
    #[nom(Selector = "FileType::FILE | FileType::BYTES")]
    File(FileEntry),
}

This fails with the following error message:

proc-macro derive panicked
message: Parsing the 'nom' meta attribute failed: Error("unexpected token")

Stacking selector attributes results in runtime parsing errors:

#[derive(Nom)]
#[nom(LittleEndian, Selector = "FileType")]
pub enum FileBody {
    #[nom(Selector = "FileType::DIR")]
    Dir(DirEntry),
    #[nom(Selector = "FileType::FILE")]
    #[nom(Selector = "FileType::BYTES")]
    File(FileEntry),
}

Or:

#[derive(Nom)]
#[nom(LittleEndian, Selector = "FileType")]
pub enum FileBody {
    #[nom(Selector = "FileType::DIR")]
    Dir(DirEntry),
    #[nom(Selector = "FileType::FILE", Selector = "FileType::BYTES")]
    File(FileEntry),
}