commit 9aed729fe9e62536236875a42fb170d2c8fb3046
author Bram Moolenaar <Bram@vim.org> Fri Dec 18 15:38:00 2020 +0100
committer Bram Moolenaar <Bram@vim.org> Fri Dec 18 15:38:00 2020 +0100
tree 597232f50b0ec43af1c922800748a5d72b18a994
parent b5b77378bc35cb268c384e98c59f2bf8cb406270

patch 8.2.2157: Vim9: can delete a Vim9 script variable from a function

Problem:    Vim9: can delete a Vim9 script variable from a function.
Solution:   Check the variable is defined in Vim9 script. (closes #7483)

src/testdir/test_vim9_assign.vim

diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 60c8fe9..ad7b85b 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1211,6 +1211,14 @@
   CheckScriptFailure([
    'vim9script',
    'var svar = 123',
+   'func Func()',
+   '  unlet s:svar',
+   'endfunc',
+   'Func()',
+   ], 'E1081:')
+  CheckScriptFailure([
+   'vim9script',
+   'var svar = 123',
    'def Func()',
    '  unlet s:svar',
    'enddef',