From: Ori Livneh <ori@wikimedia.org>
Date: Mon, 23 Feb 2015 01:07:36 +0000 (-0800)
Subject: Small optimization to ResourceLoader's canExpandStylesheetWith()
X-Git-Tag: 1.31.0-rc.0~12300^2
X-Git-Url: http://git.cyclocoop.org/%24href?a=commitdiff_plain;h=731dd78677a659b7f1bbc0cd588cc03920f88e52;p=lhc%2Fweb%2Fwiklou.git

Small optimization to ResourceLoader's canExpandStylesheetWith()

The import CSS at-rule can only go in the very top of a style sheet.
(Technically, the charset at-rule may precede it, but that rule is not valid
for style sheets that are embedded in <style> tags.) So we don't need to scan
the entire CSS text for '@import' -- we just have to make sure that the CSS
text doesn't start with it.

Change-Id: I56c2ebd55d4a7e90dde8e89e76b6d1b52ed004f8
---

diff --git a/resources/src/mediawiki/mediawiki.js b/resources/src/mediawiki/mediawiki.js
index 43c6422e92..90b8503266 100644
--- a/resources/src/mediawiki/mediawiki.js
+++ b/resources/src/mediawiki/mediawiki.js
@@ -777,7 +777,7 @@
 				// Makes sure that cssText containing `@import`
 				// rules will end up in a new stylesheet (as those only work when
 				// placed at the start of a stylesheet; bug 35562).
-				return cssText.indexOf( '@import' ) === -1;
+				return cssText.slice( 0, '@import'.length ) !== '@import';
 			}
 
 			/**