literal('%') feat is broken

[yanndegat]

hi,

literal('%') is not functional

usecase: test to lookup a var with the following definition

---
test: "%{literal('%'}{TEST}"

Results:

• within the unit tests inside the hiera package, it's working
• within the unit tests inside the "lookup" package, it's broken

it outputs an empty string, as if the resulting string were interpolated twice.

to make it work you have to escape the following way:

---
test: "%{literal('%')}{literal('%{literal('%')}')}{TEST}" 

• it seems that it