Fix #721

lua/cmp/utils/keymap.lua

@@ -7,7 +7,7 @@ local keymap = {}
 ---@param keys string
 ---@return string
 keymap.t = function(keys)
-  return (string.gsub(keys, '(<[A-Za-z0-9%-%[%]%^@]->)', function(match)
+  return (string.gsub(keys, '(<[A-Za-z0-9\\%-%[%]%^@]->)', function(match)
     return vim.api.nvim_eval(string.format([["\%s"]], match))
   end))
 end

lua/cmp/utils/keymap_spec.lua

@@ -14,6 +14,7 @@ describe('keymap', function()
       '<C-[>',
       '<C-^>',
       '<C-@>',
+      '<C-\\>',
       '<Tab>',
       '<Plug>(example)',
       '<C-r>="abc"<CR>',