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- Fixed: `preserve` option does not create duplicated values ([#7](https://github.com/postcss/postcss-calc/issues/7))

- Changed: partial compatiblity with postcss v3.x (stack traces have lost filename)

- Added: GNU like exceptions ([#4](https://github.com/postcss/postcss-calc/issues/4))

- Added: `precision` option ([#5](https://github.com/postcss/postcss-calc/issues/5))

- Added: `preserve` option ([#6](https://github.com/postcss/postcss-calc/issues/6))

- Added: source of the error (gnu like message) (fix [#3](https://github.com/postcss/postcss-calc/issues/3))

- Fixed: correctly ignore unrecognized values (fix [#2](https://github.com/postcss/postcss-calc/issues/2))

- Changed: Plugin now return a function to have a consistent api. ([ref 1](https://github.com/ianstormtaylor/rework-color-function/issues/6), [ref 2](https://twitter.com/jongleberry/status/496552790416576513))

✨ First release based on [rework-calc](https://github.com/reworkcss/rework-calc) v1.1.0 (code mainly exported to [`reduce-css-calc`](https://github.com/MoOx/reduce-css-calc))

var reduceCSSCalc = require("reduce-css-calc")

var helpers = require("postcss-message-helpers")

 * PostCSS plugin to reduce calc() function calls.

module.exports = function plugin(options) {

    style.eachDecl(function transformDecl(decl) {

      if (!decl.value || decl.value.indexOf("calc(") === -1) {

      helpers.try(function transformCSSCalc() {

        var value = reduceCSSCalc(decl.value, precision)

        decl.parent.insertBefore(decl, clone)

  "description": "PostCSS plugin to reduce calc()",

    "url": "https://github.com/postcss/postcss-calc.git"

    "postcss-custom-properties": "^3.0.0",

    "lint": "jscs *.js **/*.js && jshint . --exclude-path .gitignore",

		@@ -0,1 +1,5 @@
		# 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
		@@ -2,0 +6,0 @@

		@@ -29,5 +29,7 @@ /**

		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)
		@@ -34,0 +36,0 @@ })

		{
		"name": "postcss-calc",
		"version": "4.0.0",
		"version": "4.0.1",
		"description": "PostCSS plugin to reduce calc()",
		@@ -5,0 +5,0 @@ "keywords": [

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