ij_kotlin_imports_layout with | generates multiple line breaks

[bcmedeiros]

Expected Behavior

I'm currently using the import-ordering rule with the following config:

ij_kotlin_imports_layout = *, |, javax.**, java.**, |, kotlinx.**, kotlin.**

I'd expect one of my files to be formatted like:

package test

import java.nio.file.Files
import java.nio.file.Paths
import java.util.Objects

object TestData {
    fun loadString(dataset: String): String {
        val path = Paths.get(Objects.requireNonNull(TestData::class.java.getResource(dataset)).toURI())
        return String(Files.readAllBytes(path))
    }
}

Observed Behavior

For some reason (I assume because of the two | in the layout config and not having any imports that match *), I got two extra line breaks in the file:

package test



import java.nio.file.Files
import java.nio.file.Paths
import java.util.Objects

object TestData {
    fun loadString(dataset: String): String {
        val path = Paths.get(Objects.requireNonNull(TestData::class.java.getResource(dataset)).toURI())
        return String(Files.readAllBytes(path))
    }
}

It seems that the number of extra line breaks is equals the number of | in the config, but if I remove the extra line breaks, I have to run ktlint -F twice until it stabilises, which makes the issue even worse.

Steps to Reproduce

Use the configuration and file above.

Your Environment

• Version of ktlint used: 0.48.2
• Relevant parts of the .editorconfig settings: (mentioned above)

[paul-dingemans]

This seems to be a regression bug in 0.48.2. It works fine with 0.48.1.