Vanilla 2.6 is here
! It includes security fixes and requires PHP 7.0. We have therefore ALSO released Vanilla 2.5.2
with security patches if you are still on PHP 5.6 to give you additional time to upgrade.
When you do this, are you passed the overridden function so that you can call it for some default behavior?
Also, do you know if you can "un-echo" stuff with php or otherwise modify the output buffer?
For example, override a method to change the input it gets called with (by calling it yourself) and then go fix up markup that it printed.