Bug: lsp commands doesn't work on source generated files with Roslyn LSP

[molostovvs]

RTFM Checklist

• I have searched exisiting issues / discussions
• I have read the Wiki including the Advanced section
• I have read man fzf / I am well versed in shell fzf

Operating system

Linux

Shell

fish, version 4.0.2

Neovim version (nvim --version)

NVIM v0.12.0-dev-916+g68eece8b84

Fzf version (fzf --version)

0.65.0 (04c4269d)

Output of :lua print(os.getenv('FZF_DEFAULT_OPTS'))

nil

Is the problem reproducible with mini.sh?

• My issue is reproducible with mini.sh
• My issue IS NOT reproducible with mini.sh
• I have not tested with mini.sh (not relevant, requires LSP, Windows, etc)

Fzf-lua configuration

opts = {
      winopts = {
        width = 0.98,
        height = 0.98,
        backdrop = 85,
        preview = {
          layout = 'vertical',
          vertical = 'down:60%',
          delay = 30,
        },
      },
      files = {
        path_shorten = 10,
        git_icons = true,
      },
      previewers = {
        builtin = {
          title_fnamemodify = function(s)
            return s
          end,
        },
      },
    },
    config = function(_, opts)
      require('fzf-lua').setup(opts)
      require('fzf-lua').register_ui_select()
    end

Describe the bug / steps to reproduce

Hi!
Thanks for your awesome plugin! I use it daily and really enjoy it.

I'm encountering a bug when using :FzfLua lsp_definitions on a method whose body is source-generated with C# source generators. The call results in the following error:

Lua :command callback: /usr/share/nvim/runtime/lua/vim/lsp/util.lua:1024: Cursor position outside buffer
stack traceback:
        [C]: in function 'nvim_win_set_cursor'
        /usr/share/nvim/runtime/lua/vim/lsp/util.lua:1024: in function 'jump_to_location'
        .../fzf-lua/lua/fzf-lua/actions.lua:251: in function <.../fzf-lua/lua/fzf-lua/actions.lua:149>
        .../fzf-lua/lua/fzf-lua/actions.lua:268: in function 'vimcmd_entry'
        .../fzf-lua/lua/fzf-lua/actions.lua:275: in function 'jump_to_location'
        .../fzf-lua/lua/fzf-lua/providers/lsp.lua:433: in function 'fn_contents'
        .../fzf-lua/lua/fzf-lua/providers/lsp.lua:611: in function <.../fzf-lua/lua/fzf-lua/providers/lsp.lua:606>
        .../fzf-lua/lua/fzf-lua/cmd.lua:35: in function 'run_command'
        .../fzf-lua/plugin/fzf-lua.lua:10: in function <.../fzf-lua/plugin/fzf-lua.lua:9>

The buffer that gets opened has a path like this (notice the tilde prefix):

~/source/work/demo/Sourcegen/roslyn-source-generated://8050b016-c2f9-41b3-a089-5c75e8000202/Example.HelloWorld.g.cs?documentId=c08647b7-f2a8-79d3-3de3-f3ae9d6a489d&hintName=Example.HelloWorld.g.cs&assemblyName=Generators&assemblyVersion=1.0.0.0&typeName=Generators.HelloWorldGenerator&assemblyPath=/home/mvs/source/work/demo/Sourcegen/src/Generators/bin/Debug/netstandard2.0/Generators.dll

But the correct buffer path should be:

roslyn-source-generated://8050b016-c2f9-41b3-a089-5c75e8000202/Example.HelloWorld.g.cs?documentId=c08647b7-f2a8-79d3-3de3-f3ae9d6a489d&hintName=Example.HelloWorld.g.cs&assemblyName=Generators&assemblyVersion=1.0.0.0&typeName=Generators.HelloWorldGenerator&assemblyPath=%2Fhome%2Fmvs%2Fsource%2Fwork%2Fdemo%2FSourcegen%2Fsrc%2FGenerators%2Fbin%2FDebug%2Fnetstandard2.0%2FGenerators.dll

Interestingly, using :lua vim.lsp.buf.definition() or :lua vim.lsp.buf.references() works as expected and opens the buffer correctly.

You can reproduce the issue using this minimal repo

To reproduce:

1. Run dotnet build (requires .NET 10 Preview).
2. Open Program.cs.
3. Use “Go to definition” (FzfLua lsp_definitions) on the HelloWorld() method.

You'll also need the roslyn.nvim plugin, and the Roslyn LSP server as described in its README (from a custom mason registry).

Let me know if you need any help reproducing

[ibhagwan]

This is a similar situation to java jar files with jdtls which have a prefix of jdtls://.., we need to understand why the cwd is being prepended to the entry.

I see the error is from the actions from trying to press enter on a file, before that, when you open the picker - does the preview show the correct location?

Can you post a screenshot of lsp_definitions with the preview open? if the line isn't fully visible press alt-/ to enable fzf line wrapping so we can see the full path.

[ibhagwan]

The reason this doesn't work is because roslyn-source-generated:// isn't a valid URI due to the dashes between the words, fzf-lua therefore deems this isn't a URI and prepends the cwd to the entry.

I'll push a solution soon.

[ibhagwan]

b0491b1

@molostovvs, can you update fzf-lua and lmk if this solves your issue?

[molostovvs]

I tested it, everything works fine
Thank you very much!

[ibhagwan]

I tested it, everything works fine Thank you very much!

Fantastic, ty for the update :)