nobu	2018-05-31 18:30:49 +0900 (Thu, 31 May 2018)

  New Revision: 63540

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63540

  Log:
    vm_args.c: refined warning splat to var
    
    * vm_args.c (setup_parameters_complex): refine the warning message
      for a splat hash which was passed to a single variable instead
      of keyword arguments.  this behavior will be changed when the
      "real" keyword argument is introduced in the future.

  Modified files:
    trunk/vm_args.c
Index: vm_args.c
===================================================================
--- vm_args.c	(revision 63539)
+++ vm_args.c	(revision 63540)
@@ -671,8 +671,15 @@ setup_parameters_complex(rb_execution_co https://github.com/ruby/ruby/blob/trunk/vm_args.c#L671
 	argument_kw_error(ec, iseq, "unknown", rb_hash_keys(keyword_hash));
     }
     else if (kw_splat && NIL_P(keyword_hash)) {
-	rb_warning("passing splat keyword arguments as a single Hash"
-		   " to `% "PRIsVALUE"'", rb_id2str(ci->mid));
+	if (RTEST(ruby_verbose)) {
+	    VALUE path = rb_iseq_path(iseq);
+	    VALUE line = rb_iseq_first_lineno(iseq);
+	    VALUE label = rb_iseq_label(iseq);
+	    rb_compile_warning(NIL_P(path) ? NULL : RSTRING_PTR(path), FIX2INT(line),
+			       "in `%s': the last argument was passed as a single Hash",
+			       NIL_P(label) ? NULL : RSTRING_PTR(label));
+	    rb_warning("although a splat keyword arguments here");
+	}
     }
 
     if (iseq->body->param.flags.has_block) {

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