patch 8.2.1138: Vim9: return type of copy() and deepcopy() is any
Problem: Vim9: return type of copy() and deepcopy() is any.
Solution: Use type of the argument.
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 761dd57..94c9457 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -893,6 +893,22 @@
assert_equal(#{items: []}, d)
enddef
+def Test_copy_return_type()
+ let l = copy([1, 2, 3])
+ let res = 0
+ for n in l
+ res += n
+ endfor
+ assert_equal(6, res)
+
+ let dl = deepcopy([1, 2, 3])
+ res = 0
+ for n in dl
+ res += n
+ endfor
+ assert_equal(6, res)
+enddef
+
def Line_continuation_in_def(dir: string = ''): string
let path: string = empty(dir)
\ ? 'empty'