keys,en,de
GOOD_MORNING,"Good Morning","Guten Morgen"
GOOD_EVENING,"Good Evening",""
Without quotes,"With, comma","With ""inner"" quotes","With ""inner"", quotes"","" and comma","With ""inner
split"" quotes and
line breaks","With \nnewline chars"
Some other~delimiter~should still work, shouldn't it?
What about	tab separated	lines, good?