Error with package manager?

[Thantos]

Not really sure if you'd call this an error but it would be nice if it did cause an error

If you are using an xml modification file and misspell a tag the manager won't complain.

I.E.
<file name="$sourcedir/ManagePermissions.php">

<operation>

<serach position="before"><![CDATA[

'profile_remote_avatar' => false,]]></search>

<add><![CDATA[,

'profile_ignore_board' => true,]]></add>

</operation>
</file>
Did not cause any time of error or warning during installation (it did during uninstall of course).  In fact it said that ManagePermission was successful

I'm not sure how feasible it is to have it output an error but it should would be nice