Read custom file in unlang

[Timo Buhrmester]

Hi list,

Apologies for the seemingly trivial question, but I can't seem to find
an answer in the documentation:  Is there a way to read the content of
a text file in unlang, for the purpose of assigning it to a variable or
using it in a conditional *without* having to shell out w/ backticks?

Thanks,
Timo Buhrmester