patch 8.2.3336: behavior of negative index in list change changed
Problem: Behavior of negative index in list change changed. (Naruhiko
Nishino)
Solution: Only change it for Vim9 script. (closes #8749)
diff --git a/src/testdir/test_listdict.vim b/src/testdir/test_listdict.vim
index bef4581..8f8e34c 100644
--- a/src/testdir/test_listdict.vim
+++ b/src/testdir/test_listdict.vim
@@ -42,6 +42,23 @@
let l[:1] += [1, 2]
let l[2:] -= [1]
call assert_equal([2, 4, 2], l)
+
+ let lines =<< trim END
+ VAR l = [1, 2]
+ call assert_equal([1, 2], l[:])
+ call assert_equal([2], l[-1 : -1])
+ call assert_equal([1, 2], l[-2 : -1])
+ END
+ call CheckLegacyAndVim9Success(lines)
+
+ let l = [1, 2]
+ call assert_equal([], l[-3 : -1])
+
+ let lines =<< trim END
+ var l = [1, 2]
+ assert_equal([1, 2], l[-3 : -1])
+ END
+ call CheckDefAndScriptSuccess(lines)
endfunc
" List identity