From: Jakub Pawlowicz <contact@jakubpawlowicz.com>
Date: Thu, 22 Dec 2016 21:18:33 +0000 (+0100)
Subject: Fixes #758 - ignores rules with empty selectors.
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=a239f68aec7e5ed9ce6717936914ceddef1ccff8;p=clean-css.git

Fixes #758 - ignores rules with empty selectors.
---

diff --git a/History.md b/History.md
index 35cad478..378b51e6 100644
--- a/History.md
+++ b/History.md
@@ -12,6 +12,7 @@
 * Fixed issue [#657](https://github.com/jakubpawlowicz/clean-css/issues/657) - adds property name validation.
 * Fixed issue [#686](https://github.com/jakubpawlowicz/clean-css/issues/686) - adds rounding precision for all units.
 * Fixed issue [#756](https://github.com/jakubpawlowicz/clean-css/issues/756) - adds disabling font-weight optimizations.
+* Fixed issue [#758](https://github.com/jakubpawlowicz/clean-css/issues/758) - ignores rules with empty selector.
 * Fixed issue [#817](https://github.com/jakubpawlowicz/clean-css/issues/817) - makes `off` disable rounding.
 * Fixed issue [#818](https://github.com/jakubpawlowicz/clean-css/issues/818) - disables `px` rounding by default.
 * Fixed issue [#834](https://github.com/jakubpawlowicz/clean-css/issues/834) - adds extra line break in nested blocks.
diff --git a/lib/optimizer/tidy-rules.js b/lib/optimizer/tidy-rules.js
index 38bbb3b0..296b757f 100644
--- a/lib/optimizer/tidy-rules.js
+++ b/lib/optimizer/tidy-rules.js
@@ -187,6 +187,11 @@ function tidyRules(rules, removeUnsupported, adjacentSpace, beautify, warnings)
     list.push(rule);
   }
 
+  if (list.length == 1 && list[0][1].length === 0) {
+    warnings.push('Empty selector \'' + list[0][1] + '\' at ' + formatPosition(list[0][2][0]) + '. Ignoring.');
+    list = [];
+  }
+
   return list.sort(ruleSorter);
 }
 
diff --git a/test/optimizer/basic-test.js b/test/optimizer/basic-test.js
index ba712e97..4c9cd54d 100644
--- a/test/optimizer/basic-test.js
+++ b/test/optimizer/basic-test.js
@@ -100,6 +100,10 @@ vows.describe('simple optimizations')
       'quotes #2': [
         '.b[data-json=\'"aaaa":"bbbb"\']{color:red}',
         '.b[data-json=\'"aaaa":"bbbb"\']{color:red}'
+      ],
+      'no rule scope': [
+        '{overflow:hidden}',
+        ''
       ]
     }, { advanced: false })
   )