Resolving inheritence/overloading

[luben]

Continuing with highlighting the differences with typesafe-config.

Given file test-2.conf:

Common {
    common = "common"
}

Foo = ${Common}                                                                                                                                                                                
Foo = {
    home = "/tmp"
    home = ${?HOME}
}

it fails to resolve with "resolve_substitutions() did not give us a resolved object" (it works with typesafe-config).

For the record, this variant does not work in neither of them, though I was expecting it to work:

Common {
    common = "common"
}

Foo = ${Common} {
    home = "/tmp"
    home = ${?HOME}
}

It fails with:

# simple_config_object::replace_child did not find {
    # file: test-2.conf
    # unresolved merge of 2 values follows (
    #     unmerged value 0 from file: test-2.conf
    "home" : "/tmp",
    #     unmerged value 1 from file: test-2.conf
    "home" : ${?HOME}
    # ) end of unresolved merge

}

and

com.typesafe.config.ConfigException$BugOrBroken: SimpleConfigObject.replaceChild did not find SimpleConfigObject({"home":"/tmp","home":${?HOME}}) in SimpleConfigObject({"Common":{"common":"common"},"Foo":${Common}{"home":"/tmp","home":${?HOME}}})

And this variant works in both of them but is more verbose:

Common {
    common = "common"
}

Foo-content {
    home = "/tmp"
    home = ${?HOME}
}
Foo = ${Common} ${Foo-content}

[luben]

Just another observation, this also does not resolve:

Common {
    common = "common"
}
Foo = ${Common}
Foo = {
    home = "/tmp"
} 

[troizky]

This pull request will definitely fix the problem #106