From c2c46022df8140f7340d84287ee329eba4eccfe7 Mon Sep 17 00:00:00 2001
From: Omar Roth <omarroth@hotmail.com>
Date: Tue, 26 Jun 2018 21:00:39 -0500
Subject: [PATCH] Fix json in_string

---
 examples/json/json.bnf | 2 +-
 spec/marpa_spec.cr     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/json/json.bnf b/examples/json/json.bnf
index 6269bdb..1b24e10 100644
--- a/examples/json/json.bnf
+++ b/examples/json/json.bnf
@@ -20,7 +20,7 @@ elements ::= value* proper => 1 separator => comma
 comma ~ ','
 
 string ::= '"' in_string '"' action => do_string
-in_string ~ /([^"\\]|\\[\"\\\/bftnrt]|\\u[a-fA-F0-9]{4})+/
+in_string ~ /([^"\\]|\\[\"\\\/bftnrt]|\\u[a-fA-F0-9]{4})*/
 
 number ~ /-?([\d]+)(\.\d+)?([eE][+-]?\d+)?/
 
diff --git a/spec/marpa_spec.cr b/spec/marpa_spec.cr
index 84341a7..066e76f 100644
--- a/spec/marpa_spec.cr
+++ b/spec/marpa_spec.cr
@@ -3,7 +3,7 @@ require "./spec_helper"
 describe Marpa do
   it "parses json" do
     grammar = File.read("examples/json/json.bnf")
-    input = %q([1,"abc\nd\"ef",true,-2.3,null,[],[1,2,3],{},{"a":1,"b":2}])
+    input = %q([1,"abc\nd\"ef","",true,-2.3,null,[],[1,2,3],{},{"a":1,"b":2}])
 
     parser = Marpa::Parser.new
     actions = JSON_Actions.new