ixed: preserve option does not create duplicated values (4.0.1)

Close #7

Author: MoOx

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 4.0.1 - 2015-04-09
+
+- Fixed: `preserve` option does not create duplicated values ([#7](https://github.com/postcss/postcss-calc/issues/7))
+
 # 4.0.0 - 2015-01-26
 
 - Added: compatibility with postcss v4.x

index.js

@@ -26,9 +26,11 @@ module.exports = function plugin(options) {
           return
         }
 
-        var clone = decl.clone()
-        clone.value = value
-        decl.parent.insertBefore(decl, clone)
+        if (value != decl.value) {
+          var clone = decl.clone()
+          clone.value = value
+          decl.parent.insertBefore(decl, clone)
+        }
       }, decl.source)
     })
   }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "postcss-calc",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "PostCSS plugin to reduce calc()",
   "keywords": [
     "css",

test/fixtures/preserve.css

@@ -1,3 +1,4 @@
 calc {
   value: calc(1/3);
+  value: calc(100% + 1px);
 }

test/fixtures/preserve.expected.css

@@ -1,4 +1,5 @@
 calc {
   value: 0.33333;
   value: calc(1/3);
+  value: calc(100% + 1px);
 }