google-java-format: Reflow long strings does not give same output

[blacksails]

The following input

public class Test {
    private String longString = "asdf asdf asdf asdf asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfa";
}

Becomes

public class Test {
    private String longString =
            "asdf asdf asdf asdf"
                + " asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfa";
}

Using google-java-format AOSP

When using the gradle task ./gradlew spotlessApply this becomes

public class Test {
    private String longString =
            "asdf asdf asdf asdf"
                    + " asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfa";
}

Gradle version: 8.10.2
Spotless version: 6.25.0 and 7.0.0.BETA4 (same result)
Operating system: macOS 15.0.1

Spotless config:

extensions.configure<com.diffplug.gradle.spotless.SpotlessExtension> {
    java {
        googleJavaFormat("1.24.0").aosp().reorderImports(true)
    }
}

[nedtwigg]

This is a bug in GJF, not Spotless. You'll have to report it there.

[blacksails]

@nedtwigg Why is this a GJF and not a spotless bug? I would always expect spotless to do the same as GJF.

What GJF does to long strings also complies with the googla java style guide. https://google.github.io/styleguide/javaguide.html#s4.5.2-line-wrapping-indent. So I cant really put up a bug report about it there?

[nedtwigg]

I would always expect spotless to do the same as GJF.

I would expect that too, and so far I don't have any evidence that it doesn't. Have you tried using GJF with AOSP on this same file?

[blacksails]

Have you tried using GJF with AOSP on this same file?

@nedtwigg Sorry if it wasent clear from my issue, but that is exactly what I have done and shown in the snippets in the issue. First snippet is input, next is GJF with AOSP, last is Spotless with GJF and AOSP.