based on a post of mine in "getting-started" https://kotlinlang.slack.com/archives/C0B8MA7FA/p1659464960124589 currently its possible to define an inner function within builders. If you have recursive logic, this is nice to work with. e.g. for a personal project I can easily do this:

fun holeFiller(spaces: Int, totalSum: Int): List<List<Int>> = buildList {
    fun fill(sumToGo: Int, list: List<Int> = emptyList()) {
        when (list.size) {
            spaces - 1 -> add(list + sumToGo)
            else -> for (i in 0..sumToGo) {
                fill(sumToGo - i, list + i)
            }
        }
    }
    fill(totalSum)
}

However, if I want to have this with a sequence, the function "fill" needs to be specified as

suspend fun SequenceScope<List<Int>>.fill

It would be nice if an inner function of a sequence implicitly works like this

How will this work when specifying function references? There are use cases where someone wants to define an inner function that is explicitly not

suspend

or explicitly isn't within a

Sequence

those inner functions HAVE to be called within the scope of the sequence right? That means they need to be suspended? Or can you give me an example where that isn't the case?