From ec6c8b2a3c5c499d8832ef82a2ad941cbac4a80a Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Thu, 3 Oct 2019 09:17:37 +0900
Subject: Add local variable reordering to `kwargs`; ref #4746

---
 mrbgems/mruby-compiler/core/parse.y | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index f7ae3913f..8f2ee4e92 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -797,6 +797,12 @@ new_args_tail(parser_state *p, node *kws, node *kwrest, mrb_sym blk)
   }
   for (k = kws; k; k = k->cdr) {
     if (k->car->cdr->cdr->car) { // allocate keywords with default
+      node *lv = k->car->cdr->cdr->car->cdr;
+      while (lv) {
+        local_add_f(p, sym(lv->car));
+        lv = lv->cdr;
+      }
+      k->car->cdr->cdr->car = k->car->cdr->cdr->car->car;
       local_add_f(p, sym(k->car->cdr->car));
     }
   }
@@ -3302,16 +3308,21 @@ f_arglist       : '(' f_args rparen
                 ;
 
 f_label         : tIDENTIFIER tLABEL_TAG
+                    {
+                      local_nest(p);
+                    }
                 ;
 
 f_kw            : f_label arg
                     {
                       void_expr_error(p, $2);
-                      $$ = new_kw_arg(p, $1, $2);
+                      $$ = new_kw_arg(p, $1, cons($2, locals_node(p)));
+                      local_unnest(p);
                     }
                 | f_label
                     {
                       $$ = new_kw_arg(p, $1, 0);
+                      local_unnest(p);
                     }
                 ;
 
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