Diagnostics version is always 0

[jwortmann]

Using the latest master branch (https://github.com/julia-vscode/LanguageServer.jl/tree/0da181a8e48da14c2ac46519311e01352c7c6fca) I noticed that the optional version property of the PublishDiagnosticsParams is always set to 0. As a result, the client likely rejects to update the diagnostics which are shown in the editor UI due to outdated document version. In other words the diagnostics from the state when a file was initially opened are shown in the editor, but after that they never change.

For example, the client sends textDocument/didChange like

{
    "textDocument": {
        "uri": "file:///D:/code/Julia/LspTest/main.jl",
        "version": 2
    },
    "contentChanges": ...
}

then the server sends textDocument/publishDiagnostics with

{
    "uri": "file:///d%3A/code/Julia/LspTest/main.jl",
    "version": 0,
    "diagnostics": ...
}

I assume this bug was introduced with the JuliaWorkspaces, and is perhaps caused by drive letter casing of URIs not being handled correctly (just a guess), because otherwise you would have very likely already noticed it in VSCode.

[sschuldenzucker]

Hey all, I'm hitting this bug in helix on mac. It prevents diagnostics from updating. Log messages (see the last one):

2026-03-18T22:19:46.967 helix_lsp::transport [INFO] julia -> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"contentChanges":[{"range":{"end":{"character":0,"line":232},"start":{"character":0,"line":231}},"text":""}],"textDocument":{"uri":"file:///Users/steffen/<REDACTED FOR PRIVACY>.jl","version":21}}}
2026-03-18T22:19:46.977 helix_lsp::transport [INFO] julia <- {"method":"textDocument/publishDiagnostics","params":{"uri":"file:///Users/steffen/<REDACTED FOR PRIVACY>.jl","version":0,"diagnostics":[{"range":{"start":{"line":231,"character":4},"end":{"line":231,"character":7}},"severity":4,"code":"UnusedBinding","source":"Julia","message":"Variable has been assigned but not used.","tags":[1]},{"range":{"start":{"line":231,"character":10},"end":{"line":231,"character":13}},"severity":2,"source":"Julia","message":"Missing reference: foo"}]},"jsonrpc":"2.0"}
2026-03-18T22:19:46.977 helix_view::handlers::lsp [INFO] Version (0) is out of date for File("/Users/steffen/<REDACTED FOR PRIVACY>.jl") (expected (21)), dropping PublishDiagnostic notification

It seems that server._open_file_versions is indeed not updated on didChange. It's managed correctly on didOpen and didClose but didChange doesn't set it. Looks like a bug.