rzls shows error notification on each edit in a `cshtml` file (follow-up on #68)

[kmoschcau]

This is a follow-up on #68.

To recap, the error message is (without a stack-trace):

rzls: -32004: Specified argument was out of the range of valid values. (Parameter 'character')

This shows up as a notification (vim.notify) with each buffer change (inserting text, undo, etc.).

So far I have observed, that it does not show up when a cshtml buffer is first edited. It only shows up once I have reloaded the buffer once with :e.

This also correlates with completions being available before :e, but not after.

[tris203]

Can you create a minimal reproduction repo from a a dotnet new blazor project

[kmoschcau]

Let me try. Though so far, I've only seen in happen in cshtml files. So it might be that it only happens with Razor Pages or MVC, not with Blazor.

[kmoschcau]

I can't reproduce it so far with neither dotnet new blazor nor with dotnet new mvc. The only difference I can see, is that the project where this occurs, takes longer to load than the fresh templates. Both the bigger project and the fresh templates have the issue, that neovim says the file has been modified outside of neovim when I try to write it the first time. However in the template file, completion keeps working an no notification shows up, while exactly that happens in the existing template. I'm a bit at a loss here.

[tris203]

I am more than happy to take a look, but until I get a reproducer or a more solid stack trace of where is causing it, its very difficult to speculate where its coming from

I personally have never seen this error

[tris203]

I actually think the notify is coming from neovim core, so the LSP itself is returning an err somewhere

[kmoschcau]

I figured out some more stuff. Once I get into the broken state with the error messages appearing, I can seemingly repair it by running :e again.

And something even more interesting, only certain edits cause the broken state:

• using o or O
• using dd
• deleting a newline in insert mode with backspace

But the following actions do not cause the broken behavior:

• using i or a (or I or A)
• adding newlines in insert mode

[tris203]

Why are you reloading the buffer?
I suspect something in state isn't being cleaned up properly

[kmoschcau]

Because it is being modified in the background on first load. I either have to force write it or reload it. And afterwards I reload it to fix the broken state.

[kmoschcau]

Finally I got it to reproduce even with the newly generated repos! This worked with both dotnet new blazor and dotnet new mvc.

First thing to keep in mind, this is still on Windows. I can test later, if I can reproduce the same behavior on a Linux machine.

Here are the steps:

1. mkdir rzls-repro && cd rzls-repro
2. dotnet new blazor
3. nvim .editorconfig
4. Insert the following, save and quit:

   [*]
   end_of_line = lf

5. nvim Components\App.razor
6. o and observe, that no error is happening
7. try :w and observe error: E13: File exists (add ! to override)
8. run :e!
9. o and observe, that we now get the error notification

OK the E13 error only happens when I navigate to the file with Snacks Picker. It doesn't happen when I open the file directly from the CLI or via :e. However the error notification also appears immediately in that case. Snacks also does something weird to the editor config. vim.b.editorconfig is set when I open the file directly, but is nil, when I open it via Snacks picker. :/

[tris203]

I cant reproduce this, ive been trying but its fine my side

Are you on windows? I suspect there is something there if you are, and I would take a guess at it being line ending related

[kmoschcau]

As I said, this is still on Windows, yes. I think you can reproduce this on Linux as well, just with the line endings switched around. It really depends on what line endings dotnet new generates on Linux. I will be able to try and repro it on my Linux machine in a few hours at the earliest.

[kmoschcau]

I just tried this on Linux and I at least get almost the same result. When I don't set up the .editorconfig, my .razor files use utf-8 with a BOM, CRLF line endings and no final newline. Changing the buffer works fine. When I now add the .editorconfig as described above and change the line endings to just LF (BOM is still there and no final newline), I can press o and get the error message in the original post.

Also I consistently Components/App.razor__virtual.html as a normal file with unsaved changes when trying to quit.

[Hier0nim]

Hi,
I think I experience something similar, as after every save in razor file I am prompted to press Enter, and an error is logged.

Logs

[START][2025-06-05 15:21:25] LSP logging initiated [ERROR][2025-06-05 15:21:25] ...lsp/handlers.lua:562 "[initialized] [Microsoft.CodeAnalysis.LanguageServer.HostWorkspace.Razor.RazorDynamicFileInfoProvider] RazorDynamicFileInfoProvider not initialized. RazorWorkspaceService or RazorLspDynamicFileInfoProvider is null." [WARN][2025-06-05 15:21:26] ...lsp/handlers.lua:564 "[project/open] [Microsoft.CodeAnalysis.LanguageServer.HostWorkspace.FileWatching.DelegatingFileChangeWatcher] We are unable to use LSP file watching; falling back to our in-process watcher." [WARN][2025-06-05 15:21:35] .../lua/vim/lsp.lua:439 "rzls does not have a configuration" [WARN][2025-06-05 15:21:35] .../lua/vim/lsp.lua:439 "aftershave does not have a configuration" [WARN][2025-06-05 15:21:35] ...m/lsp/client.lua:874 "The language server html triggers a registerCapability handler for workspace/didChangeWorkspaceFolders despite dynamicRegistration set to false. Report upstream, this warning is harmless" [ERROR][2025-06-05 15:21:45] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:21:49] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:21:55] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:22:06] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" }

I have created an MRE example with a Nix flake and the Neovim configuration (nvim-dotnet package) I used for tests.

[tris203]

Hi,
I think I experience something similar, as after every save in razor file I am prompted to press Enter, and an error is logged.

Logs

[START][2025-06-05 15:21:25] LSP logging initiated [ERROR][2025-06-05 15:21:25] ...lsp/handlers.lua:562 "[initialized] [Microsoft.CodeAnalysis.LanguageServer.HostWorkspace.Razor.RazorDynamicFileInfoProvider] RazorDynamicFileInfoProvider not initialized. RazorWorkspaceService or RazorLspDynamicFileInfoProvider is null." [WARN][2025-06-05 15:21:26] ...lsp/handlers.lua:564 "[project/open] [Microsoft.CodeAnalysis.LanguageServer.HostWorkspace.FileWatching.DelegatingFileChangeWatcher] We are unable to use LSP file watching; falling back to our in-process watcher." [WARN][2025-06-05 15:21:35] .../lua/vim/lsp.lua:439 "rzls does not have a configuration" [WARN][2025-06-05 15:21:35] .../lua/vim/lsp.lua:439 "aftershave does not have a configuration" [WARN][2025-06-05 15:21:35] ...m/lsp/client.lua:874 "The language server html triggers a registerCapability handler for workspace/didChangeWorkspaceFolders despite dynamicRegistration set to false. Report upstream, this warning is harmless" [ERROR][2025-06-05 15:21:45] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:21:49] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:21:55] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" } [ERROR][2025-06-05 15:22:06] ...m/lsp/client.lua:1050 "LSP[rzls]" "on_error" { code = "SERVER_REQUEST_HANDLER_ERROR", err = "...rt/rzls.nvim/lua/rzls/handlers/csharppulldiagnostics.lua:13: attempt to index field 'identifier' (a nil value)" }

I have created an MRE example with a Nix flake and the Neovim configuration (nvim-dotnet package) I used for tests.

This is different.

The latest rzls in nixpkgs isn't compatible with the HEAD of this plugin.
I have a pr to update it in nixpkgs but I was having build issues