From 7396e08f161aff5b0ee442c15943283f02ac45c1 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Thu, 12 Jan 2017 12:41:23 -0800
Subject: [PATCH] config: minor.

---
 lib/node/config.js | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/node/config.js b/lib/node/config.js
index 20f91c1e..ab9dee55 100644
--- a/lib/node/config.js
+++ b/lib/node/config.js
@@ -323,7 +323,8 @@ config.parseConfig = function parseConfig(text, prefix, dirname) {
  */
 
 config.parseArg = function parseArg(argv) {
-  var data = { args: [] };
+  var data = Object.create(null);
+  var args = [];
   var i, arg, key, value, alias, equals;
 
   if (!argv)
@@ -391,10 +392,12 @@ config.parseArg = function parseArg(argv) {
       data[key] = value;
       key = null;
     } else {
-      data.args.push(value);
+      args.push(value);
     }
   }
 
+  data.args = args;
+
   return config.parseData(data);
 };
 
@@ -404,24 +407,27 @@ config.parseArg = function parseArg(argv) {
  * @returns {Object}
  */
 
-config.parseEnv = function parseEnv(env) {
+config.parseEnv = function parseEnv(env, prefix) {
   var data = Object.create(null);
   var i, keys, key, value, alias;
 
   if (!env)
     env = process.env;
 
+  if (!prefix)
+    prefix = 'BCOIN_';
+
   keys = Object.keys(env);
 
   for (i = 0; i < keys.length; i++) {
     key = keys[i];
 
-    if (key.indexOf('BCOIN_') !== 0)
+    if (key.indexOf(prefix) !== 0)
       continue;
 
     value = env[key].trim();
 
-    key = key.substring(6);
+    key = key.substring(prefix.length);
     key = key.replace(/_/g, '').toLowerCase();
 
     if (key.length === 0)