patch 8.2.2744: Vim9: no way to explicitly ignore an argument Commit: https://github.com/vim/vim/commit/962c43bf0d6a33b905f2acd920d3701476ebb5c9 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 10 17:18:09 2021 +0200 patch 8.2.2744: Vim9: no way to explicitly ignore an argument Problem: Vim9: no way to explicitly ignore an argument. Solution: Use the underscore as the name for an ignored argument.

--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -3188,6 +3188,11 @@ set_var_const(
 	goto failed;
     }
     var_in_vim9script = is_script_local && current_script_is_vim9();
+    if (var_in_vim9script && name[0] == '_' && name[1] == NUL)
+    {
+	emsg(_(e_cannot_use_underscore_here));
+	goto failed;
+    }
 
     di = find_var_in_ht(ht, 0, varname, TRUE);