The new

when

thing in

1.3 RC

is reformatted incorrectly by IDEA:

val value = when (val type = peek()) {
                    JsonToken.BOOLEAN -> nextBoolean()
                    JsonToken.NULL -> nextNull().let { null }
                    else -> throw Error("Unexpected type $type")
                }

After auto-formatting:

val value = when (
                    val type = peek()) {
                    JsonToken.BOOLEAN -> nextBoolean()
                    JsonToken.NULL -> nextNull().let { null }
                    else -> throw Error("Unexpected type $type")
                }

There is no matching option under the

when

close in

Code Style

. Is this a bug / missing feature? It happens with both the old default IDEA style and the new one.

val type = peek() is not an expression it shouldn't compile imo

@gergo what are you talking about

val type = peek()

initializing a variable is not an expression it won't return anything, how do you want to match it's result with when?

Can you read at least the first 6 words in my post? We're talking Kotlin 1.3 here.

ohh, i see, i wan't aware of that change, sorry.

Where is this change to

when

documented?

So far, only in the 1.3-M1 blog post (https://blog.jetbrains.com/kotlin/2018/07/see-whats-coming-in-kotlin-1-3-m1/). If you're just looking at the 1.3-RC post, you won't know about it. But presumably when 1.3 actually lands, the new blog post will contain everything new in 1.3, and the docs will be updated to include a mention of this new

when

subject variable feature