From bdd7e2bc8caf737143c18270abf7325c3540b7b6 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sat, 13 Aug 2016 13:56:14 +0900
Subject: parse.y: fix chained assignments

fix syntax errors with chained assignment with op assign.
reported [Bug:12669] in bugs.ruby-lang.org fixed in CRuby 2.4.
---
 mrbgems/mruby-compiler/core/parse.y | 38 ++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index ec3d10682..c8fc79297 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -1318,6 +1318,25 @@ stmt            : keyword_alias fsym {p->lstate = EXPR_FNAME;} fsym
                     {
                       $$ = new_masgn(p, $1, $3);
                     }
+                | lhs '=' mrhs
+                    {
+                      $$ = new_asgn(p, $1, new_array(p, $3));
+                    }
+                | mlhs '=' arg_value
+                    {
+                      $$ = new_masgn(p, $1, $3);
+                    }
+                | mlhs '=' mrhs
+                    {
+                      $$ = new_masgn(p, $1, new_array(p, $3));
+                    }
+                | expr
+                ;
+
+command_asgn    : lhs '=' command_rhs
+                    {
+                      $$ = new_asgn(p, $1, $3);
+                    }
                 | var_lhs tOP_ASGN command_rhs
                     {
                       $$ = new_op_asgn(p, $1, $2, $3);
@@ -1348,25 +1367,6 @@ stmt            : keyword_alias fsym {p->lstate = EXPR_FNAME;} fsym
                       backref_error(p, $1);
                       $$ = new_begin(p, 0);
                     }
-                | lhs '=' mrhs
-                    {
-                      $$ = new_asgn(p, $1, new_array(p, $3));
-                    }
-                | mlhs '=' arg_value
-                    {
-                      $$ = new_masgn(p, $1, $3);
-                    }
-                | mlhs '=' mrhs
-                    {
-                      $$ = new_masgn(p, $1, new_array(p, $3));
-                    }
-                | expr
-                ;
-
-command_asgn    : lhs '=' command_rhs
-                    {
-                      $$ = new_asgn(p, $1, $3);
-                    }
 		;
 
 command_rhs     : command_call   %prec tOP_ASGN
-- 
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