commit 8436773fad285215481c4ce2b32692e66fca599f
author Bram Moolenaar <Bram@vim.org> Sun Aug 23 15:21:55 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Sun Aug 23 15:21:55 2020 +0200
tree 06e0f314b50b1051d747101adeee5c269fe6585f
parent dc0cf1db3e8e0de349e4cc5b0a7ab6c8b7dc2ebb

patch 8.2.1515: Vim9: can create s:var in legacy script but cannot unlet

Problem:    Vim9: can create s:var in legacy script but cannot unlet.
Solution:   Allow :unlet for legacy script var.

src/testdir/test_vim9_script.vim

diff --git a/src/testdir/test_vim9_script.vim b/src/testdir/test_vim9_script.vim
index 5a25147..05b4e9f 100644
--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -608,6 +608,13 @@
   assert_false(exists('g:somevar'))
   unlet! g:somevar
 
+  # also works for script-local variable in legacy Vim script
+  s:somevar = 'legacy'
+  assert_true(exists('s:somevar'))
+  unlet s:somevar
+  assert_false(exists('s:somevar'))
+  unlet! s:somevar
+
   call CheckScriptFailure([
         'vim9script',
         'let svar = 123',