auto-indent plugins dont work on c# (.cs) files

[ana-rchy]

I have confirmed that this is a bug related to nvf

• This is a bug, and not an user error or a support request. I understand that my issue will be closed if it is not a bug in nvf.
• I have checked the issues tab and confirmed that my issue has not yet been reported. I understand that my issue will be closed if it is a duplicate.

Description

auto-indent plugins such as vim-sleuth or indent-o-matic just dont auto-indent on newline within c# files, even though every other file type that ive used works just fine
my nixos config: https://github.com/ana-rchy/nixos-config/

Installation Method

NixOS Module (nixosModules.default)

Installation Method (Other)

nixos module in my flake.nix

nvf Version

master

Reproduction steps

dont know

Expected behavior

auto-creating tabs upon adding a newline for every possible file type

Actual Behavior

expected behaviour unless in a c# file

System Information

- system: `"x86_64-linux"`
 - host os: `Linux 6.12.64, NixOS, 26.05 (Yarara), 26.05.20260111.ffbc9f8`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.31.2+2`
 - nixpkgs: `/nix/store/ln4j1iqnnzs2ynx2cr88bdh65fmds2aq-source`

Relevant log output

`.local/state/nvf/lsp.log`: https://termbin.com/xp6x
`nvf-print-config`: https://termbin.com/cxug

[NotAShelf]

Have you confirmed that those plugins actually support the filetypes that you expect to be supported? nvf doesn't set anything by itself, and unless TS indents are conflicting (which you can test very easily) I don't see why those would break randomly.

[ana-rchy]

i found a workaround for now, which is adding this to my config:

vim.autocmds = [{
  event = [ "BufEnter" ];
  pattern = [ "*.cs" ];
  command = "setlocal indentexpr=\"\"";
}];

im guessing the default value for indentexpr is buggy