From: Jakub Pawlowicz <contact@jakubpawlowicz.com>
Date: Sat, 31 Dec 2016 10:34:32 +0000 (+0100)
Subject: See #829 - another performance optimization.
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=2e56d85d97e714db1fd827c69366c4fc3ab55f3e;p=clean-css.git

See #829 - another performance optimization.

Why:

* Well, if a selector doesn't have a colon there is no point
  looking for any pseudo classes/elements.
---

diff --git a/lib/optimizer/is-mergeable.js b/lib/optimizer/is-mergeable.js
index 789ad3bc..11b26e28 100644
--- a/lib/optimizer/is-mergeable.js
+++ b/lib/optimizer/is-mergeable.js
@@ -31,7 +31,7 @@ function isMergeable(selector, mergeablePseudoClasses, mergeablePseudoElements)
 
     if (singleSelector.length === 0 ||
         isDeepSelector(singleSelector) ||
-        !areMergeable(singleSelector, extractPseudoFrom(singleSelector), mergeablePseudoClasses, mergeablePseudoElements)) {
+        (singleSelector.indexOf(Marker.COLON) > -1 && !areMergeable(singleSelector, extractPseudoFrom(singleSelector), mergeablePseudoClasses, mergeablePseudoElements))) {
       return false;
     }
   }