From 9c95992dad153365e483be6aa555f0f4916fbefd Mon Sep 17 00:00:00 2001
From: ToruNiina <niina.toru.68u@gmail.com>
Date: Sat, 22 Dec 2018 17:44:09 +0900
Subject: [PATCH] fix error message for empty value

---
 toml/parser.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/toml/parser.hpp b/toml/parser.hpp
index 92c4c65..adefae3 100644
--- a/toml/parser.hpp
+++ b/toml/parser.hpp
@@ -971,7 +971,8 @@ parse_key_value_pair(location<Container>& loc)
         }
         else
         {
-            msg = val.unwrap_err();
+            msg = format_underline("[error] toml::parse_key_value_pair: "
+                    "invalid value format", loc, val.unwrap_err());
         }
         loc.iter() = first;
         return err(msg);