refactor(diagnostic)!: remove deprecated diagnostic APIs (#33072)

runtime/lua/vim/diagnostic.lua

@@ -1456,47 +1456,6 @@ M.handlers.signs = {
         api.nvim_create_namespace(string.format('nvim.%s.diagnostic.signs', ns.name))
     end
 
-    -- Handle legacy diagnostic sign definitions
-    -- These were deprecated in 0.10 and will be removed in 0.12
-    if opts.signs and not opts.signs.text and not opts.signs.numhl then
-      for _, v in ipairs({ 'Error', 'Warn', 'Info', 'Hint' }) do
-        local name = string.format('DiagnosticSign%s', v)
-        local sign = vim.fn.sign_getdefined(name)[1]
-        if sign then
-          local severity = M.severity[v:upper()]
-          vim.deprecate(
-            'Defining diagnostic signs with :sign-define or sign_define()',
-            'vim.diagnostic.config()',
-            '0.12'
-          )
-
-          if not opts.signs.text then
-            opts.signs.text = {}
-          end
-
-          if not opts.signs.numhl then
-            opts.signs.numhl = {}
-          end
-
-          if not opts.signs.linehl then
-            opts.signs.linehl = {}
-          end
-
-          if opts.signs.text[severity] == nil then
-            opts.signs.text[severity] = sign.text or ''
-          end
-
-          if opts.signs.numhl[severity] == nil then
-            opts.signs.numhl[severity] = sign.numhl
-          end
-
-          if opts.signs.linehl[severity] == nil then
-            opts.signs.linehl[severity] = sign.linehl
-          end
-        end
-      end
-    end
-
     local text = {} ---@type table<vim.diagnostic.Severity|string, string>
     for k in pairs(M.severity) do
       if opts.signs.text and opts.signs.text[k] then
@@ -2058,12 +2017,6 @@ function M.is_enabled(filter)
   return diagnostic_disabled[bufnr] == nil
 end
 
---- @deprecated use `vim.diagnostic.is_enabled()`
-function M.is_disabled(bufnr, namespace)
-  vim.deprecate('vim.diagnostic.is_disabled()', 'vim.diagnostic.is_enabled()', '0.12')
-  return not M.is_enabled { bufnr = bufnr or 0, ns_id = namespace }
-end
-
 --- Display diagnostics for the given namespace and buffer.
 ---
 ---@param namespace integer? Diagnostic namespace. When omitted, show
@@ -2441,12 +2394,6 @@ function M.setloclist(opts)
   set_list(true, opts)
 end
 
---- @deprecated use `vim.diagnostic.enable(false, …)`
-function M.disable(bufnr, namespace)
-  vim.deprecate('vim.diagnostic.disable()', 'vim.diagnostic.enable(false, …)', '0.12')
-  M.enable(false, { bufnr = bufnr, ns_id = namespace })
-end
-
 --- Enables or disables diagnostics.
 ---
 --- To "toggle", pass the inverse of `is_enabled()`:
@@ -2458,31 +2405,9 @@ end
 --- @param enable (boolean|nil) true/nil to enable, false to disable
 --- @param filter vim.diagnostic.Filter?
 function M.enable(enable, filter)
-  -- Deprecated signature. Drop this in 0.12
-  local legacy = (enable or filter)
-    and vim.tbl_contains({ 'number', 'nil' }, type(enable))
-    and vim.tbl_contains({ 'number', 'nil' }, type(filter))
-
-  if legacy then
-    vim.deprecate(
-      'vim.diagnostic.enable(buf:number, namespace:number)',
-      'vim.diagnostic.enable(enable:boolean, filter:table)',
-      '0.12'
-    )
-
-    vim.validate('enable', enable, 'number', true) -- Legacy `bufnr` arg.
-    vim.validate('filter', filter, 'number', true) -- Legacy `namespace` arg.
-
-    local ns_id = type(filter) == 'number' and filter or nil
-    filter = {}
-    filter.ns_id = ns_id
-    filter.bufnr = type(enable) == 'number' and enable or nil
-    enable = true
-  else
-    filter = filter or {}
-    vim.validate('enable', enable, 'boolean', true)
-    vim.validate('filter', filter, 'table', true)
-  end
+  filter = filter or {}
+  vim.validate('enable', enable, 'boolean', true)
+  vim.validate('filter', filter, 'table', true)
 
   enable = enable == nil and true or enable
   local bufnr = filter.bufnr