Mercurial > vim
diff src/testdir/test_vim9_expr.vim @ 28019:53e2bf6032e5 v8.2.4534
patch 8.2.4534: Vim9: "is" operator with empty string and null returns true
Commit: https://github.com/vim/vim/commit/f8691004b069f67becd657a02100d7521d1255a9
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Mar 10 12:20:53 2022 +0000
patch 8.2.4534: Vim9: "is" operator with empty string and null returns true
Problem: Vim9: "is" operator with empty string and null returns true.
Solution: Consider empty string and null to be different for "is".
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Thu, 10 Mar 2022 13:30:12 +0100 |
parents | cc7d54a134e4 |
children | 0ed38a4e028d |
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--- a/src/testdir/test_vim9_expr.vim +++ b/src/testdir/test_vim9_expr.vim @@ -801,6 +801,13 @@ def Test_expr4_compare_null() assert_false(null_string != null) assert_false(v:null != test_null_string()) assert_false(null != null_string) + + assert_true(null_string is test_null_string()) + assert_false(null_string is '') + assert_false('' is null_string) + assert_false(null_string isnot test_null_string()) + assert_true(null_string isnot '') + assert_true('' isnot null_string) END v9.CheckDefAndScriptSuccess(lines) unlet g:null_dict