Hover highlight

init.lua

@@ -1542,7 +1542,7 @@ end, 0)
 
 -- [[ Configure LSP ]]
 --  This function gets run when an LSP connects to a particular buffer.
-local on_attach = function(_, bufnr)
+local on_attach = function(client, bufnr)
   -- NOTE: Remember that lua is a real programming language, and as such it is possible
   -- to define small helper and utility functions so you don't have to repeat yourself
   -- many times.
@@ -1567,6 +1567,19 @@ local on_attach = function(_, bufnr)
   nmap('<leader>ds', require('telescope.builtin').lsp_document_symbols, '[D]ocument [S]ymbols')
   nmap('<leader>ws', require('telescope.builtin').lsp_dynamic_workspace_symbols, '[W]orkspace [S]ymbols')
 
+  if client.server_capabilities.documentHighlightProvider then
+    local group = vim.api.nvim_create_augroup('LspDocumentHighlight', { clear = true })
+    vim.api.nvim_create_autocmd({ 'CursorHold', 'CursorHoldI' }, {
+      buffer = bufnr,
+      group = group,
+      callback = vim.lsp.buf.document_highlight,
+    })
+    vim.api.nvim_create_autocmd('CursorMoved', {
+      buffer = bufnr,
+      group = group,
+      callback = vim.lsp.buf.clear_references,
+    })
+  end
   -- See `:help K` for why this keymap
   nmap('K', vim.lsp.buf.hover, 'Hover Documentation')
   -- nmap('<C-k>', vim.lsp.buf.signature_help, 'Signature Documentation')