neovim: Fix compatibility with newer plugin versions

users/simon/modules/neovim/init.lua

@@ -147,7 +147,7 @@ cmp.setup {
     snippet = {
         expand = function(args) luasnip.lsp_expand(args.body) end,
     },
-    mapping = {
+    mapping = cmp.mapping.preset.insert({
         ['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
         ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
         ['<C-e>'] = cmp.mapping({ i = cmp.mapping.abort(), c = cmp.mapping.close() }),
@@ -174,7 +174,7 @@ cmp.setup {
                 fallback()
             end
         end, { 'i', 's' }),
-    },
+    }),
     sources = cmp.config.sources({
         { name = 'nvim_lsp' },
         { name = 'luasnip' },
@@ -182,7 +182,7 @@ cmp.setup {
     }, {
         {
             name = 'buffer',
-            opts = {
+            option = {
                 keyword_pattern = [[\k\+]], -- allow unicode multibyte characters
             },
         }
@@ -202,9 +202,8 @@ vim.lsp.handlers['textDocument/publishDiagnostics'] = vim.lsp.with(vim.lsp.diagn
     update_in_insert = true, -- update suggestions in insert mode
 })
 
-for type, icon in pairs({ Error = ' ', Warning = ' ', Hint = ' ', Information = ' ' }) do
-    local hl = 'LspDiagnosticsSign' .. type
-    fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
+for type, icon in pairs({ Error = ' ', Warn = ' ', Hint = ' ', Info = ' ' }) do
+    fn.sign_define("DiagnosticSign" .. type, { text = icon, texthl = "Diagnostic" .. type })
 end
 
 local on_attach = function(client, bufnr)