diff --git a/lua/cmp/core.lua b/lua/cmp/core.lua
index 2393cc9..d7432da 100644
--- a/lua/cmp/core.lua
+++ b/lua/cmp/core.lua
@@ -444,7 +444,8 @@ core.confirm = function(self, e, option, callback)
     if api.is_insert_mode() then
       if false then
         --To use complex expansion debug.
-        vim.pretty_print({ -- luacheck: ignore
+        vim.print({ -- luacheck: ignore
+          item = e:get_completion_item(),
           diff_before = diff_before,
           diff_after = diff_after,
           new_text = new_text,
diff --git a/lua/cmp/core_spec.lua b/lua/cmp/core_spec.lua
index 2047577..9993215 100644
--- a/lua/cmp/core_spec.lua
+++ b/lua/cmp/core_spec.lua
@@ -33,7 +33,8 @@ describe('cmp.core', function()
         end)
       end)
       feedkeys.call(filter, 'n', function()
-        c:confirm(c.sources[s.id].entries[1], {}, function() end)
+        c:confirm(c.sources[s.id].entries[1], {}, function()
+        end)
       end)
       local state = {}
       feedkeys.call('', 'x', function()
@@ -90,6 +91,29 @@ describe('cmp.core', function()
         assert.are.same(state.cursor, { 3, 3 })
       end)
 
+      it('#1552', function()
+        local state = confirm(keymap.t('ios.'), '', {
+          filterText = "IsPermission",
+          insertTextFormat = 2,
+          label = "IsPermission",
+          textEdit = {
+            newText = "IsPermission($0)",
+            range = {
+              ["end"] = {
+                character = 3,
+                line = 0
+              },
+              start = {
+                character = 3,
+                line = 0
+              }
+            }
+          }
+        })
+        assert.are.same(state.buffer, { 'os.IsPermission()' })
+        assert.are.same(state.cursor, { 1, 16 })
+      end)
+
       it('insertText & snippet', function()
         local state = confirm('iA', 'IU', {
           label = 'AIUEO',
@@ -156,7 +180,7 @@ describe('cmp.core', function()
           }, {
             position_encoding_kind = case.encoding,
           })
-          vim.pretty_print({ state = state, case = case })
+          vim.print({ state = state, case = case })
           assert.are.same(state.buffer, { ('%s:%s%s%s%s%s:%s'):format(char, char, char, char, char, char, char) })
           assert.are.same(state.cursor, { 1, #('%s:%s%s%s%s%s'):format(char, char, char, char, char, char) })
         end)