patch 8.2.2886: various pieces of code not covered by tests Commit: https://github.com/vim/vim/commit/34fcb697240c1bc9e69417ed75db3b1a83479724 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Tue May 25 20:14:00 2021 +0200 patch 8.2.2886: various pieces of code not covered by tests Problem: Various pieces of code not covered by tests. Solution: Add a few more tests. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/8255)

--- a/src/testdir/test_user_func.vim
+++ b/src/testdir/test_user_func.vim
@@ -160,6 +160,16 @@ func Test_default_arg()
 	\ .. "1    return deepcopy(a:)\n"
 	\ .. "   endfunction",
 	\ execute('func Args2'))
+
+  " Error in default argument expression
+  let l =<< trim END
+    func F1(x = y)
+      return a:x * 2
+    endfunc
+    echo F1()
+  END
+  let @a = l->join("\n")
+  call assert_fails("exe @a", 'E121:')
 endfunc
 
 func s:addFoo(lead)