No requires lazyredraw

README.md

@@ -16,7 +16,7 @@ Readme!
 Concept
 ====================
 
-- No flicker (Sorry. Now, nvim-cmp requires `set lazyredraw` for reducing flickers.)
+- No flicker
 - Works properly
 - Fully customizable via Lua functions
 - Fully supported LSP's Completion capabilities
@@ -61,7 +61,6 @@ Plug 'hrsh7th/vim-vsnip'
 call plug#end()
 
 set completeopt=menu,menuone,noselect
-set lazyredraw
 
 lua <<EOF
   -- Setup nvim-cmp.

lua/cmp/utils/keymap.lua

@@ -80,8 +80,9 @@ keymap.backspace = function(count)
     return ''
   end
   local keys = {}
-  table.insert(keys, keymap.t(string.rep('<C-g>U<Left>', count)))
-  table.insert(keys, keymap.t(string.rep('<Del>', count)))
+  table.insert(keys, keymap.t('<Cmd>set backspace=<CR>'))
+  table.insert(keys, keymap.t(string.rep('<BS>', count)))
+  table.insert(keys, keymap.t(('<Cmd>set backspace=%s<CR>'):format(vim.o.backspace)))
   return table.concat(keys, '')
 end