From 9407f21fd73ec495bc42b1f1fd280bc546f729a0 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Fri, 23 Jun 2023 13:13:10 +0200
Subject: [PATCH] No error out on empty CmdlineEnter autocommand

Save and Restore ex_pressedreturn when calling autocommands.

fixes #12578
---
 src/autocmd.c                | 9 +++++++++
 src/testdir/test_ex_mode.vim | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/src/autocmd.c b/src/autocmd.c
index 862ddf7ccc9fa..6c99500b9e090 100644
--- a/src/autocmd.c
+++ b/src/autocmd.c
@@ -2019,6 +2019,9 @@ apply_autocmds_group(
     save_redo_T	save_redo;
     int		save_KeyTyped = KeyTyped;
     int		save_did_emsg;
+#if defined(FEAT_TIMERS) || defined(PROTO)
+    int		save_ex_pressedreturn;
+#endif
     ESTACK_CHECK_DECLARATION;
 
     /*
@@ -2311,11 +2314,17 @@ apply_autocmds_group(
 	    check_lnums_nested(TRUE);
 
 	save_did_emsg = did_emsg;
+#if defined(FEAT_TIMERS) || defined(PROTO)
+	save_ex_pressedreturn = get_pressedreturn();
+#endif
 
 	do_cmdline(NULL, getnextac, (void *)&patcmd,
 				     DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
 
 	did_emsg += save_did_emsg;
+#if defined(FEAT_TIMERS) || defined(PROTO)
+	set_pressedreturn(save_ex_pressedreturn);
+#endif
 
 	if (nesting == 1)
 	    // restore cursor and topline, unless they were changed
diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
index d03ec8f2d81db..59c28f3836187 100644
--- a/src/testdir/test_ex_mode.vim
+++ b/src/testdir/test_ex_mode.vim
@@ -239,6 +239,12 @@ func Test_ex_mode_errors()
 
   au! CmdLineEnter
   delfunc ExEnterFunc
+
+  au CmdlineEnter * :
+  call feedkeys("gQecho 1\r", 'xt')
+
+  au! CmdlineEnter
+
   quit
 endfunc