LSP4IJ 0.18.0 Release

[angelozerr]

We are about to release LSP4IJ 0.18.0. Highlights of this release include

• improving DAP support
• providing a new API to customize the formatting tab size

More details in the changelog.

Please give a try to the latest nightly build.

Unless you report a blocking issue, we'll proceed with the release next Monday 10/27/2025. If you need to have more time, please tell me.

cc @CppCXY @InSyncWithFoo @seachicken @KUGDev @AlexWeinstein92 @aparnamichael @MituuZ @turkeylurkey @mrglavas @koxudaxi @FalsePattern @onriv @kristofvb @kdvolder @rcjsuen @jansorg @SCWells72 @ericdallo @nikunjarora12345 @DetachHead @sergeysavchuk @bzoracler @bratorange

[CppCXY]

I test latest version, I always receive error report:

java.lang.IllegalStateException: Missing header Content-Length in input "
"
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:91)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:113)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)

but everything work well

[CppCXY]

see dap issue #1342

[angelozerr]

see dap issue #1342

Have you this issue with 0.17.0?

[CppCXY]

This issue has always existed, so it probably has nothing to do with the update.

[tim-sh]

Works for me with the custom tab size. Thank you!

[mrglavas]

@angelozerr I am not sure if this is a new problem, but I did just see this exception reported when I stopped and restarted a language server with the 0.18.0-20251022-195200 build:

java.lang.IllegalStateException: End size 4 is less than fixed size 5
	at java.base/java.util.stream.Nodes$FixedNodeBuilder.end(Nodes.java:1241)
	at java.base/java.util.stream.Sink$ChainedReference.end(Sink.java:261)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:622)
	at java.base/java.util.stream.ReferencePipeline.toList(ReferencePipeline.java:627)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.stopAndRefreshEditorFeature(LanguageServerWrapper.java:231)
	at com.redhat.devtools.lsp4ij.LanguageServerWrapper.stopAndDisable(LanguageServerWrapper.java:218)
	at com.redhat.devtools.lsp4ij.console.explorer.actions.StopServerAction.actionPerformed(StopServerAction.java:33)
	at com.redhat.devtools.lsp4ij.console.explorer.actions.TreeAction.actionPerformed(TreeAction.java:38)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.doPerformActionOrShowPopup(ActionUtil.kt:439)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performAction$lambda$7(ActionUtil.kt:399)
	at com.intellij.openapi.actionSystem.impl.ActionManagerImpl.performWithActionCallbacks(ActionManagerImpl.kt:1163)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performAction(ActionUtil.kt:398)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.performAction$lambda$5(ActionMenuItem.kt:269)

[angelozerr]

Ok thanks for your feedback. This problem should exist a long time ago. I will do a fix and create the release.

[angelozerr]

@mrglavas it should be fixed with #1348 I have launched the release.

[angelozerr]

LSP4IJ 0.18.0 has been released and it is available on JetBrains Marketplace https://plugins.jetbrains.com/plugin/23257-lsp4ij/versions/stable/883738 !