diff --git a/src/ex_getln.c b/src/ex_getln.c
index 289231045c..8426f00cbd 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -1855,7 +1855,7 @@ getcmdline_int(
 
 	if (ccline.cmdbuff != NULL)
 	{
-	    prev_cmdbuff = vim_strnsave(ccline.cmdbuff, ccline.cmdpos);
+	    prev_cmdbuff = vim_strsave(ccline.cmdbuff);
 	    if (prev_cmdbuff == NULL)
 		goto returncmd;
 	}
@@ -2622,8 +2622,8 @@ cmdline_changed:
 	// Trigger CmdlineChanged autocommands.
 	if (trigger_cmdlinechanged
 		&& (ccline.cmdpos != prev_cmdpos
-		    || (prev_cmdbuff != NULL && STRNCMP(prev_cmdbuff,
-			    ccline.cmdbuff, prev_cmdpos) != 0)))
+		    || (prev_cmdbuff != NULL &&
+			STRCMP(prev_cmdbuff, ccline.cmdbuff) != 0)))
 	    trigger_cmd_autocmd(cmdline_type, EVENT_CMDLINECHANGED);
 
 	// Trigger CursorMovedC autocommands.
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 43605f7e11..2c976e82d7 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -2183,6 +2183,17 @@ func Test_Cmdline()
         \ '0abc1abc2abc3',
         \ ], g:log)
 
+  " <Del> should trigger CmdlineChanged
+  let g:log = []
+  call feedkeys(":foo\<Left>\<Left>\<Del>\<Del>\<Esc>", 'xt')
+  call assert_equal([
+        \ 'f',
+        \ 'fo',
+        \ 'foo',
+        \ 'fo',
+        \ 'f',
+        \ ], g:log)
+
   unlet g:log
   au! CmdlineChanged
 
diff --git a/src/version.c b/src/version.c
index 390959c7ee..bedb8ec0bd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -724,6 +724,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1689,
 /**/
     1688,
 /**/