From bf1ec3379f08c65c0b155c3f31df98ffcb25b13d Mon Sep 17 00:00:00 2001
From: Jakub Pawlowicz <contact@jakubpawlowicz.com>
Date: Sun, 11 Jan 2015 10:26:13 +0000
Subject: [PATCH] Fixes #314 - handling spaces inside calc expressions.

---
 History.md               | 7 ++++++-
 lib/utils/extractors.js  | 5 ++++-
 test/integration-test.js | 4 ++++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/History.md b/History.md
index 38b1e8db..2c5689c3 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,4 @@
-[3.1.0 / 2015-xx-xx](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.3...v3.1.0)
+[3.1.0 / 2015-xx-xx](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.4...v3.1.0)
 ==================
 
 * Adds 0deg to 0 minification where possible.
@@ -7,6 +7,11 @@
 * Fixed issue [#182](https://github.com/GoalSmashers/clean-css/issues/182) - removing space after closing brace.
 * Fixed issue [#357](https://github.com/GoalSmashers/clean-css/issues/357) - non-standard but valid URLs.
 
+[3.0.4 / 2015-xx-xx](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.3...v3.0.4)
+==================
+
+* Fixed issue [#314](https://github.com/GoalSmashers/clean-css/issues/314) - spaces inside calc.
+
 [3.0.3 / 2015-01-07](https://github.com/jakubpawlowicz/clean-css/compare/v3.0.2...v3.0.3)
 ==================
 
diff --git a/lib/utils/extractors.js b/lib/utils/extractors.js
index de4f5446..d8b4c47a 100644
--- a/lib/utils/extractors.js
+++ b/lib/utils/extractors.js
@@ -14,6 +14,7 @@ var Extractors = {
     var isSpecial;
     var wasSpecial;
     var current;
+    var secondToLast;
     var wasCloseParenthesis;
     var isEscape;
     var token;
@@ -63,7 +64,9 @@ var Extractors = {
         isSpecial = current === ':' || current === '[' || current === ']' || current === ',' || current === '(' || current === ')';
 
         if (wasWhitespace && isSpecial) {
-          buffer.pop();
+          secondToLast = buffer[buffer.length - 2];
+          if (secondToLast != '+' && secondToLast != '-' && secondToLast != '/' && secondToLast != '*')
+            buffer.pop();
           buffer.push(current);
         } else if (isWhitespace && wasSpecial && !wasCloseParenthesis) {
         } else if (isWhitespace && !wasWhitespace && buffer.length > 0) {
diff --git a/test/integration-test.js b/test/integration-test.js
index ea779bf1..4ff1be13 100644
--- a/test/integration-test.js
+++ b/test/integration-test.js
@@ -132,6 +132,10 @@ vows.describe('integration tests').addBatch({
       'div{height:-moz-calc(3 * 2em + 10px)}',
       'div{height:-moz-calc(3 * 2em + 10px)}'
     ],
+    'not inside calc method with brackets': [
+      'body{margin-left:calc(50vw + (1024px/2))}',
+      'body{margin-left:calc(50vw + (1024px/2))}'
+    ],
     'before colon': [
       '#test{padding-left :0}',
       '#test{padding-left:0}'
-- 
2.34.1