How do I disable auto formatting on save with Verible?

[RisingEdgeIndustries]

Hello,

I'm using the lazy.nvim config and repo from here:
https://www.lazyvim.org/configuration/lazy.nvim

For reference, I'm using verible in neovim from here:
https://github.com/chipsalliance/verible

I used a fresh install of neovim 0.11.6 and after installing neovim I only installed lazyvim from that link following the instructions which seemed to work find.

My question is, how do I disable formatting (the text) on save for a verilog file (I'm using verible and sv-lang-server). I have seen a lot of examples on how to do this using a lua patter in the autocmd.lua file as shown below:

Hopefully that picture is clear enough...the code is also pasted below:

vim.api.nvim_create_autocmd("FileType", {
  print("Hello from autocmd.lua"),
  pattern = { "verilog", "Verilog", "v", "sv" },
  callback = function()
    local filetype = vim.bo.filetype
    -- Skip autoformatting for specified file types
    if vim.tbl_contains({ "fish", "lua", "perl", "yaml" }, filetype) then
      vim.b.autoformat = false
      return
    end
    -- Apply autoformatting for other file types
    vim.b.autoformat = true
  end,
  group = vim.api.nvim_create_augroup("disable_autoformat", { clear = true }),
})

I have 2x issues:

1. This doesn't seem to work for verible.
2. I only see my hello world message if I run nvim at command prompt. If I use neo-tree to open a verilog file I don't see my hello world message.

I did find that verible doesn't seem to support lua patterns:

This seems to match the behavior I'm seeing as I'm unable to turn off the format on save feature for any verilog files.

Does anyone have any idea how I could go about disabling format on save just for specific file types like ".v" and ".sv"? I would assume there is a way to identify the file besides the lua pattern?

[dpetka2001]

vim.api.nvim_create_autocmd("FileType", {
  pattern = { "verilog" },
  group = vim.api.nvim_create_augroup("verilog_disable_format", {}),
  callback = function()
    vim.b.autoformat = false
  end,
})

For FileType autocmds pattern is matched against the filetype of the file (see :h FileType). If you do :set ft? in a buffer it will print out the filetype of the specific file. That's what you put in your autocmd as well.

[RisingEdgeIndustries]

Thank you so much that worked!
Since I'm learning and very new to this, could I ask what this line does?
group = vim.api.nvim_create_augroup("verilog_disable_format", {}),

[dpetka2001]

It just creates a augroup for the specific autocmd. Useful when you want to disable the autocmd or group autocmds together. You can find more info in :h nvim_create_augroup and :h autocmd-groups.