`error: expected token: '_'; generated instead`

[koppor]

I am trying 2.58.0 on my project.

I get

Step 'palantir-java-format' found problem in 'src\main\java\org\jabref\gui\commonfxcontrols\CitationKeyPatternsPanel.java':
69:39: error: expected token: '_'; generated  instead
com.palantir.javaformat.java.FormatterException: 69:39: error: expected token: '_'; generated  instead
        at com.palantir.javaformat.java.Formatter.getFormatReplacements(Formatter.java:322)
        at com.palantir.javaformat.java.Formatter.formatSource(Formatter.java:297)
        at com.palantir.javaformat.java.Formatter.formatSource(Formatter.java:252)
        at com.palantir.javaformat.java.Formatter.formatSourceAndFixImports(Formatter.java:269)
        at com.palantir.javaformat.java.FormatterServiceImpl.formatSourceReflowStringsAndFixImports(FormatterServiceImpl.java:43)

The code is

        this.setOnSort(event ->
                viewModel.patternListProperty().sort(CitationKeyPatternsPanelViewModel.defaultOnTopComparator));

        patternColumn.setSortable(true);

Variable event is unused, but the error appears at true. When replacing event by _, the error persists.

Full case: JabRef/jabref-koppor#672. Execute ./gradlew spotlessApply on the command line.

[chongkai]

Any update on this issue? We're unable to use spotless plugin while people begin to use '_' for unused variables.

[StephenFlavin]

+1 on this, I came looking to replace Google formatter and found this did a much better job of formatting but failed with this error in a java 24 app.