commit bbd3e3c357487f7a5bdc704a819f63a7dd0dd66e
author Bram Moolenaar <Bram@vim.org> Thu Aug 06 11:23:36 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Aug 06 11:23:36 2020 +0200
tree ff477038d7ad597c4ccf0d606c84d8c88ea7d600
parent b8d732e93e4b70ad992a12f761bc6a1279dd495b

patch 8.2.1378: cannot put space between function name and paren

Problem:    Cannot put space between function name and paren.
Solution:   Allow this for backwards compatibility.

src/testdir/test_vim9_expr.vim

diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index aa705b2..746983d 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1686,6 +1686,10 @@
   assert_equal([0, 1, 2], --3->range())
 
   call CheckDefFailure(["let x = 'yes'->Echo"], 'E107:')
+  call CheckScriptFailure([
+	"vim9script",
+	"let x = substitute ('x', 'x', 'x', 'x')"
+	], 'E121:')
 enddef