Fix #894

lua/cmp/config/mapping.lua

@@ -1,5 +1,7 @@
 local types = require('cmp.types')
 local misc = require('cmp.utils.misc')
+local feedkeys = require('cmp.utils.feedkeys')
+local keymap   = require('cmp.utils.keymap')
 
 local mapping = setmetatable({}, {
   __call = function(_, invoke, modes)
@@ -50,7 +52,7 @@ mapping.preset.cmdline = function(override)
         if cmp.visible() then
           cmp.select_next_item()
         else
-          cmp.complete({ reason = cmp.ContextReason.Manual })
+          feedkeys.call(keymap.t('<C-z>'), 'n')
         end
       end
     },
@@ -60,7 +62,7 @@ mapping.preset.cmdline = function(override)
         if cmp.visible() then
           cmp.select_prev_item()
         else
-          cmp.complete({ reason = cmp.ContextReason.Manual })
+          feedkeys.call(keymap.t('<C-z>'), 'n')
         end
       end
     },