From cc3f1b7f5cccd652c4348d28f3e678a9ea3ac520 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Wed, 2 Nov 2016 16:14:20 +0900
Subject: allow single quoted labels in hashes; ref #3231

---
 mrbgems/mruby-compiler/core/parse.y | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index a00fd0c49..426c262fb 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -3241,6 +3241,10 @@ assoc           : arg_value tASSOC arg_value
                     {
                       $$ = cons(new_sym(p, $1), $2);
                     }
+                | tLABEL_END arg_value
+                    {
+                      $$ = cons(new_sym(p, new_strsym(p, $1)), $2);
+                    }
                 | tSTRING_BEG tLABEL_END arg_value
                     {
                       $$ = cons(new_sym(p, new_strsym(p, $2)), $3);
-- 
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