Observers don't get called if wrapped within <adminhtml>, but get called without <adminhtml>

Question

I run into this odd situation where the observer doesn't get called if I wrapped it under adminhtml. For example the following observer is called when I saved a product.

 <events>
    <catalog_product_save_after>
        <observers>
            <testname_testmodule>
                <class>testname_testmodule/observer</class>
                <method>logUpdate</method>
                <type>singleton</type>
            </testname_testmodule>
        </observers>
    </catalog_product_save_after>
</events>

However, if I wrapped event within like below, then it doesn't work.

<adminhtml>
    <events>
        <catalog_product_save_after>
            <observers>
                <testname_testmodule>
                    <class>testname_testmodule/observer</class>
                    <method>logUpdate</method>
                    <type>singleton</type>
                </testname_testmodule>
            </observers>
        </catalog_product_save_after>
    </events>
</adminhtml>

Am I missing something here?

Answer 1

In your Gist code this seems to be wrong nested...

<global>
     <adminhtml>

It should be ...

<global>
    ...
</global>
<frontend>
    ...
</frontend>
<adminhtml>
    ...
</adminhtml>

Answer 2

@sv3n just helped me rubberduck debugging the issue.

Turned out <adminhtml>...</adminhtml> is supposed to be outside <global>..</global>