patch 8.2.1454: Vim9: failure invoking lambda with wrong arguments
Problem: Vim9: failure invoking lambda with wrong arguments.
Solution: Handle invalid arguments. Add a test.
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 48c1cf2..fb07586 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1584,6 +1584,14 @@
call CheckDefFailure(["filter([1, 2], {k,v -> 1})"], 'E1069:')
call CheckDefFailure(["let L = {a -> a + b}"], 'E1001:')
+
+ assert_equal('xxxyyy', 'xxx'->{a, b -> a .. b}('yyy'))
+
+ CheckDefExecFailure(["let s = 'asdf'->{a -> a}('x')"],
+ 'E1106: one argument too many')
+ CheckDefExecFailure(["let s = 'asdf'->{a -> a}('x', 'y')"],
+ 'E1106: 2 arguments too many')
+ CheckDefFailure(["echo 'asdf'->{a -> a}(x)"], 'E1001:')
enddef
def Test_expr7_lambda_vim9script()