commit ddfc05100a29263a682dd96bb924dfde4354a654
author Bram Moolenaar <Bram@vim.org> Mon Sep 06 20:56:56 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Mon Sep 06 20:56:56 2021 +0200
tree b30efee7b9f80ea356d3fe9de194888d312e4979
parent 3b318513561b5862944769188ae4af6b70311838

patch 8.2.3408: can delete a numbered function

Problem:    Can delete a numbered function. (Naohiro Ono)
Solution:   Disallow deleting a numbered function. (closes #8760)

src/testdir/test_user_func.vim

diff --git a/src/testdir/test_user_func.vim b/src/testdir/test_user_func.vim
index 747ec48..819a6bb 100644
--- a/src/testdir/test_user_func.vim
+++ b/src/testdir/test_user_func.vim
@@ -434,6 +434,11 @@
   func d.fn()
     return 1
   endfunc
+
+  " cannot delete the dict function by number
+  let nr = substitute(execute('echo d'), '.*function(''\(\d\+\)'').*', '\1', '')
+  call assert_fails('delfunction g:' .. nr, 'E475: Invalid argument: g:')
+
   delfunc d.fn
   call assert_equal({'a' : 10}, d)
 endfunc