Keyboard and missing Deadkeys with Leap 42.2

Hi,

i am using a german keyboard with deadkeys because i am writing a lot in spanish too. That worked great during the last 10 years including openSUSE 13.2.
Now that i upgraded to Leap 42.2 i am missing an important combination:
**~+n -> **ñ
is no longer working (worked until 13.2, can’t say for 42.1)
the other combinations like á,é,í still work.

Can somebody point me to the config file for those dead keys? It seems that all references i found so far like Xcomposefile etc. are outdated and no longer present.