add Range:difference

examples/surround.lua

@@ -1,11 +1,12 @@
 local vim_repeat = require 'u.repeat'
-local Pos = require 'u.pos'
 local Range = require 'u.range'
 local Buffer = require 'u.buffer'
 local CodeWriter = require 'u.codewriter'
 
 local M = {}
 
+local ESC = vim.api.nvim_replace_termcodes('<Esc>', true, false, true)
+
 local surrounds = {
   [')'] = { left = '(', right = ')' },
   ['('] = { left = '( ', right = ' )' },
@@ -126,7 +127,7 @@ function M.setup()
 
     do_surround(range, bounds)
     -- this is a visual mapping: end in normal mode:
-    vim.cmd { cmd = 'normal', args = { '' }, bang = true }
+    vim.cmd.normal(ESC)
   end, { noremap = true, silent = true })
 
   -- Change