Diagnostics Disabled flag seems do not work

[LLMChild]

nvim-tree.lua/lua/nvim-tree/diagnostics.lua

Line 44 in 26632f4

is_disabled = vim.diagnostic.is_disabled()

I am trying to write a keybind to turn off diagnostics.

vim.g.diagnostics_active = true
function _G.toggle_diagnostics()
if vim.g.diagnostics_active then
  vim.g.diagnostics_active = false
  vim.diagnostic.hide()
  vim.lsp.handlers["textDocument/publishDiagnostics"] = function() end
  vim.notify("Diagnostics are now off", vim.log.levels.INFO, { title = "Diagnostics" })
else
  vim.g.diagnostics_active = true
  vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
    vim.lsp.diagnostic.on_publish_diagnostics, {
      virtual_text = false,
      signs = true,
      underline = true,
      update_in_insert = true,
    }
  )
  vim.notify("Diagnostics are now no", vim.log.levels.INFO, { title = "Diagnostics" })
end
end
map('n', '<leader>td', ':call v:lua.toggle_diagnostics()<CR>',  {noremap = true, silent = true, desc = "Toggle Diagnostics"})

This works for my diagnostics all buffers but does not work for nvim-tree.
So I am trying to find a function which can toggle Diagnostics for nvim-tree in runtime.
Sadly, nvim-tree does not have anything like this.
So I checked the code , and I found this flag.
Then I add enable and enable(false) in my keybindings.
like this

function _G.toggle_diagnostics()
if vim.g.diagnostics_active then
  vim.g.diagnostics_active = false
  vim.diagnostic.hide()
  vim.diagnostic.enable(false)
  vim.lsp.handlers["textDocument/publishDiagnostics"] = function() end
  vim.notify("Diagnostics are now off", vim.log.levels.INFO, { title = "Diagnostics" })
else
  vim.g.diagnostics_active = true
  vim.diagnostic.enable()
  vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
    vim.lsp.diagnostic.on_publish_diagnostics, {
      virtual_text = false,
      signs = true,
      underline = true,
      update_in_insert = true,
    }
  )

It didn't not work either, and I checked status using :lua print(vim.diagnostic.is_disabled()).
But nvim-tree still won't hide the diagnostic.
Can anybody in this community help me?

[LLMChild]

I also checked vim.fn.has "nvim-0.9"==1 is true

[alex-courtis]

We should not receive any new diagnostics info when diagnostics has been disabled - no DiagnosticChanged events will be published.

What do you see after you disable nvim diagnostics? I imagine that the old values would persist forever.

There doesn't seem to be an event; do you know of another plugin that handles diagnostic disable?

[LLMChild]

After I disable nvim diagnostics, there is not new diagnostics events anymore.
But all these old diagnostics signs still keeps on the nvim-tree.
I think this means vim.diagnostics.hide or vim.diagnostics.disable would not clear the previous diagnostics signs of nvim-tree.
But they can hide diagnostic of current buffer.
With vim.diagnostics.reset, I get what i want. It can clear all old signs of nvim-tree.
But if I want to toggle diagnostics again, I need to run it again.
I want something like vim.diagnostics.hide to hide all these old signs of nvim-tree and I would like to know how to do such thing.

[alex-courtis]

:help diagnostic.txt doesn't explicitly cover the conditions that will fire the event. It does look like reset achieves the functionality you are after as it fires the event that disable does not.

I might be misunderstanding: could you simply call reset after hide or disable? My testing showed that calling reset and disable in any order achieves the desired functionality.

You can use hide, enable and reset for specific buffers and namespaces if you wish.