From 1b21b018e01392d2c74e53136f8fa0ca838d7643 Mon Sep 17 00:00:00 2001
From: James Halliday <mail@substack.net>
Date: Sun, 14 Apr 2013 20:10:25 -0700
Subject: [PATCH] factor out interpolation

---
 index.js | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/index.js b/index.js
index 8a71346..c22cc6d 100644
--- a/index.js
+++ b/index.js
@@ -23,23 +23,21 @@ exports.parse = function (s, env) {
                 ;
             }
             else if (/^"/.test(s)) {
-                return s
-                    .replace(/^"|"$/g, '')
-                    .replace(/\\(["'\\$`(){}!#&*|])/g, '$1')
-                    .replace(/\$(\w+)/g, getVar)
-                    .replace(/\${(\w+)}/g, getVar)
-                ;
-            }
-            else {
-                return s
-                    .replace(/\\([ "'\\$`(){}!#&*|])/g, '$1')
-                    .replace(/\$(\w+)/g, getVar)
-                    .replace(/\${(\w+)}/g, getVar)
-                ;
+                return interpolate(s.replace(/^"|"$/g, ''))
             }
+            else return interpolate(s);
         })
     ;
+    
     function getVar (_, x) {
         return String(env[x])
     }
+    
+    function interpolate (s) {
+        return s
+            .replace(/\\([ "'\\$`(){}!#&*|])/g, '$1')
+            .replace(/\$(\w+)/g, getVar)
+            .replace(/\${(\w+)}/g, getVar)
+        ;
+    }
 };