From 61356ce5feada204026cb0742df68ea646edc95c Mon Sep 17 00:00:00 2001
From: Justin Ridgewell <justin@ridgewell.name>
Date: Thu, 21 Dec 2017 00:18:12 -0500
Subject: [PATCH] Implement playpen defaults

Avoids issues where we enable `editable` but forget to specify `editor`
(eg, https://github.com/rust-lang/rust-by-example/issues/963).  Since we
already include Ace editor, seems like we can just treat it as the
default.
---
 src/config.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/config.rs b/src/config.rs
index acc8beea..5b597477 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -274,12 +274,22 @@ pub struct HtmlConfig {
 }
 
 /// Configuration for tweaking how the the HTML renderer handles the playpen.
-#[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+#[serde(default, rename_all = "kebab-case")]
 pub struct Playpen {
     pub editor: PathBuf,
     pub editable: bool,
 }
 
+impl Default for Playpen {
+    fn default() -> Playpen {
+        Playpen {
+            editor: PathBuf::from("ace"),
+            editable: false,
+        }
+    }
+}
+
 
 #[cfg(test)]
 mod tests {