patch 8.2.3177: Vim9: can not use "for _ in expr" at script level Commit: https://github.com/vim/vim/commit/ad2d4969e1616d3a0354c181e3a09271d5433b3d Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jul 18 17:08:50 2021 +0200 patch 8.2.3177: Vim9: can not use "for _ in expr" at script level Problem: Vim9: can not use "for _ in expr" at script level. Solution: Skip assignment if the loop variable is "_".

--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -2557,6 +2557,12 @@ def Test_for_loop()
         dd.counter = 12
       endfor
       assert_equal([{a: 'Cat', counter: 12}], foo)
+
+      reslist = []
+      for _ in range(3)
+        reslist->add('x')
+      endfor
+      assert_equal(['x', 'x', 'x'], reslist)
   END
   CheckDefAndScriptSuccess(lines)
 enddef