New Rule Proposal: square-bracket-spacing

[mgroth0]

Currently, with the standard ruleset:

class SomeClass() {
    operator fun set(
        a: Int,
        b: Int,
        c: Int,
    ) = Unit

    fun set(
        a: Double,
        b: Double,
    ) = Unit
}

fun someFunction() {
    SomeClass() [ 1, 2 ] = 3 // allowed
    SomeClass().set( 1.0, 2.0 ) // Unexpected spacing after "(" (standard:paren-spacing)
    SomeClass().set(1.0, 2.0) // allowed
}

Expected Rule behavior

SomeClass() [ 1, 2 ] = 3

Becomes

SomeClass()[1,2] = 3

I propose square-bracket-spacing have the same behavior as paren-spacing, but with square brackets.

Additional information

• Current version of ktlint: 1.1.1