diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index 628db67..a547ac4 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -829,6 +829,15 @@
   " completion after a range followed by a pipe (|) character
   call feedkeys(":1,10 | chist\t\<C-B>\"\<CR>", 'xt')
   call assert_equal('"1,10 | chistory', @:)
+
+  " use <Esc> as the 'wildchar' for completion
+  set wildchar=<Esc>
+  call feedkeys(":g/a\\xb/clearj\<Esc>\<C-B>\"\<CR>", 'xt')
+  call assert_equal('"g/a\xb/clearjumps', @:)
+  " pressing <esc> twice should cancel the command
+  call feedkeys(":chist\<Esc>\<Esc>", 'xt')
+  call assert_equal('"g/a\xb/clearjumps', @:)
+  set wildchar&
 endfunc
 
 func Test_cmdline_write_alternatefile()