The new `when` thing in `1.3 RC` is reformatted in...

# announcements

[ribesg]

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.

[ribesg]

Wow nevermind this code doesn't compile anyway

[ribesg]

https://gist.github.com/Ribesg/d933e2efbc42db925de91d0872ca6512

[ribesg]

So I found the issue on Youtrack for the formatting and upvoted it, and I am reporting my compilation issue, as I can't find anything like this already reported.

[ribesg]

https://youtrack.jetbrains.net/issue/KT-27161

[ribesg]

FYI here's the formatting issue https://youtrack.jetbrains.net/issue/KT-27027

[gergo]

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

[gergo]

val type = peek()
val value = when(type){ ...

[ribesg]

@gergo what are you talking about

[gergo]

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?

[ribesg]

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

[gergo]

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

[cbruegg]

Where is this change to when documented?

[kevinmost]

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