From 83d7aaf5e64825c6eb7d4ffe39caab8392620a0c Mon Sep 17 00:00:00 2001
From: Azriel Hoh <azriel91@gmail.com>
Date: Wed, 17 Oct 2018 12:50:27 +1300
Subject: [PATCH] Fixed derive `Default` on container.

Issue #25
---
 src/attr.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/attr.rs b/src/attr.rs
index 6ca83fb..276fd0d 100644
--- a/src/attr.rs
+++ b/src/attr.rs
@@ -599,7 +599,13 @@ fn parse_boolean_meta_item(item: &Option<&str>, default: bool, name: &str) -> Re
     match *item {
         Some("true") => Ok(true),
         Some("false") => Ok(false),
-        Some(_) => Err(format!("Invalid value for `{}`", name)),
+        Some(val @ _) => {
+            if val == name {
+                Ok(true)
+            } else {
+                Err(format!("Invalid value for `{}`: `{}`", name, val))
+            }
+        }
         None => Ok(default),
     }
 }