Markdown code block syntax highlighting issues in Quick Documentation

[harry-xm]

// is not grayed out in the following parts of a textDocument/hover result, but is grayed out in the editor.

// Implements notable traits: Future<Output = ?>
pub fn with_graceful_shutdown<F>(self, signal: F) -> Graceful<I, S, F, E>
where
    F: Future<Output = ()>,
    E: NewSvcExec<IO, S::Future, S::Service, E, GracefulWatcher>,

// Make a server from the previous examples...
let server = Server::bind(&([127, 0, 0, 1], 3000).into())
    .serve(make_service);

...

LSP server's response is

[Trace - 20:07:31] Received response 'textDocument/hover - (89)' in 1ms.
Result: {
  "contents": {
    "kind": "markdown",
    "value": "\n```rust\nhyper::server::server::Server\n```\n\n```rust\n// Implements notable traits: Future\u003cOutput \u003d ?\u003e\npub fn with_graceful_shutdown\u003cF\u003e(self, signal: F) -\u003e Graceful\u003cI, S, F, E\u003e\nwhere\n    F: Future\u003cOutput \u003d ()\u003e,\n    E: NewSvcExec\u003cIO, S::Future, S::Service, E, GracefulWatcher\u003e,\n```\n\n---\n\nPrepares a server to handle graceful shutdown when the provided future\ncompletes.\n\n# Example\n\n```rust\n// Make a server from the previous examples...\nlet server \u003d Server::bind(\u0026([127, 0, 0, 1], 3000).into())\n    .serve(make_service);\n\n// Prepare some signal for when the server should start shutting down...\nlet (tx, rx) \u003d tokio::sync::oneshot::channel::\u003c()\u003e();\nlet graceful \u003d server\n    .with_graceful_shutdown(async {\n        rx.await.ok();\n    });\n\n// Await the `server` receiving the signal...\nif let Err(e) \u003d graceful.await {\n    eprintln!(\"server error: {}\", e);\n}\n\n// And later, trigger the signal by calling `tx.send(())`.\nlet _ \u003d tx.send(());\n```"
  },
  "range": {
    "start": {
      "line": 96,
      "character": 9
    },
    "end": {
      "line": 96,
      "character": 31
    }
  }
}

[angelozerr]

could you share your file please?

[harry-xm]

Sure, here is the link: https://github.com/eunomia-bpf/eunomia-bpf/blob/291304bf415817d2f5b46a3655d9f9594b8672a6/ecli/server/src/main.rs#L97

[harry-xm]

After disabling the bundled plugin "TextMate Bundles", the syntax highlighting is gone.

Therefore, the actual question is whether syntax highlighting of code blocks in hover popup should be handled by LSP4IJ or not.

[angelozerr]

LSP4IJ can manage syntax highlighting by using standard IJ syntax component (ex: TextMate, custom IJ syntax coloration by using the PsiFile), but it cannot manage LSP semantic tokens highligting in code block. I don't know how to manage that, any contribution are welcome!

[angelozerr]

I have tested and it works for me:

I wonder if you are using an another IJ plugin which does some syntax coloration (and not textmate) ?

[harry-xm]

I don't have other non-bundled plugins installed. Maybe it's related to the IDE or OS? I'm running PyCharm (Community Edition) on macOS.

PyCharm 2024.2.0.1 (Community Edition)
Build #PC-242.20224.428, built on August 21, 2024
Runtime version: 21.0.3+13-b509.4 aarch64 (JCEF 122.1.9)
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.lwawt.macosx.LWCToolkit
macOS 14.6.1
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 2048M
Cores: 8
Metal Rendering is ON
Registry:
ide.experimental.ui=true
Non-Bundled Plugins:
com.redhat.devtools.lsp4ij (0.4.0)

[angelozerr]

I close this discussion in favor of #557