@Tamas_Papp that’s the link I mentioned… Do you see something there suggesting that $"text" would work?
I don’t think this is the general interpolation mechanism. For example the following doesn’ t work: """Hello$"\n"world""".
Funny thing is, after checking the general interpolation documentation I thought you were right: it says
The shortest complete expression after the $ is taken as the expression whose value is to be interpolated into the string.
So it’s reasonable to conclude that "\n" is the expression to be interpolated here. But in practice it doesn’t work (outside of ` `). And "xxx $3 xxx" also doesn’t work, while "xxx $(3) xxx" does. So AFAICS the documentation is misleading, and the syntax `echo $"hello\nworld"` is undocumented…