Question about include feature in .gitconfig

Hello git users and developers,

I have a question about "include" feature in config file.
In .gitconfig I included .my_super_secret_file like below.

# .gitconfig
[include]
    path = .my_super_secret_file

# .my_super_secret_file
[github]
    password = foobar

Now, my question is return value of "git config --global github.password".
I expect it to return foobar but it returns nothing. Is this behavior expected?

Cheers!
Shouichi

-- 
Shouichi KAMIYA