Update: Modularizing some features and customizations.

lua/message_auto_clear.lua

@@ -0,0 +1,22 @@
+-- Auto-clear command line messages on most user actions and on pressing ESC
+
+local M = {}
+
+function M.setup()
+	-- Create an augroup for auto-clearing messages
+	local clear_msg_grp = vim.api.nvim_create_augroup('AutoClearMessages', { clear = true })
+
+	-- Clear messages on common user actions
+	vim.api.nvim_create_autocmd({ 'CursorMoved', 'CursorMovedI', 'InsertEnter', 'InsertLeave', 'TextChanged', 'TextChangedI' }, {
+		group = clear_msg_grp,
+		callback = function()
+			vim.cmd 'echo ""' -- Clear the message/command line
+		end,
+	})
+
+	-- Clear messages when pressing ESC in normal and visual modes
+	vim.keymap.set('n', '<Esc>', '<Esc><Cmd>echo ""<CR>', { noremap = true, silent = true })
+	vim.keymap.set('v', '<Esc>', '<Esc><Cmd>echo ""<CR>', { noremap = true, silent = true })
+end
+
+return M