shape ties/slurs after line break

[Dr. med. Kai Lautenschläger]

Hi everyone!

just having finished my largest project so far I have been diving into tweaks 
and overrides quite extensively for the first time. I keep being amazed by LP’s 
capabilities!!!! Some questions have popped up, for which I couldn’t find any 
answer in the Manual. Could anyone give me a hint, were to look for it?

Is there a way to shape ties and slurs after a line break? The following tiny 
example should show the problem:

------8<--SNIPP--------------
\version "2.17.95"
#(set-global-staff-size 14)
\paper { ragged-right = ##t tagline = "" #(set-paper-size "a8") }

\relative { a'1^"default" ~ |\break a4 }

\relative { a'1^"randomly changed shape"-\shape #'((0 . -2) (0 . 0) (0 . 2) (0 
. 4)) ~ |\break a4^"but here it's unchanged" }
------8<--SNAPP--------------

Thanks a lot in advance!

Kai