From 8a79be7894b352c0947a8b067f83b8ef388dfc48 Mon Sep 17 00:00:00 2001
From: jaubourg <j@ubourg.net>
Date: Thu, 29 Nov 2012 17:16:42 +0100
Subject: [PATCH] Simplifies how url is kept devoid of anti-cache parameter for
 ifModified requests. Also, renames ifModifiedKey to cacheURL so that it now
 conveys the variable's nature rather than its purpose. -5 min/gzipped.

---
 src/ajax.js | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/src/ajax.js b/src/ajax.js
index ca09eb939..4dc4761ea 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -317,8 +317,8 @@ jQuery.extend({
 		options = options || {};
 
 		var transport,
-			// ifModified key
-			ifModifiedKey,
+			// URL without anti-cache param
+			cacheURL,
 			// Response headers
 			responseHeadersString,
 			responseHeaders,
@@ -474,39 +474,39 @@ jQuery.extend({
 		// Determine if request has content
 		s.hasContent = !rnoContent.test( s.type );
 
+		// Save the URL in case we're toying with the If-Modified-Since
+		// and/or If-None-Match header later on
+		cacheURL = s.url;
+
 		// More options handling for requests with no content
 		if ( !s.hasContent ) {
 
 			// If data is available, append data to url
 			if ( s.data ) {
-				s.url += ( ajax_rquery.test( s.url ) ? "&" : "?" ) + s.data;
+				cacheURL = ( s.url += ( ajax_rquery.test( cacheURL ) ? "&" : "?" ) + s.data );
 				// #9682: remove data so that it's not used in an eventual retry
 				delete s.data;
 			}
 
-			// Get ifModifiedKey before adding the anti-cache parameter
-			ifModifiedKey = s.url;
-
 			// Add anti-cache in url if needed
 			if ( s.cache === false ) {
-				s.url = rts.test( ifModifiedKey ) ?
+				s.url = rts.test( cacheURL ) ?
 
 					// If there is already a '_' parameter, set its value
-					ifModifiedKey.replace( rts, "$1_=" + ajax_nonce++ ) :
+					cacheURL.replace( rts, "$1_=" + ajax_nonce++ ) :
 
 					// Otherwise add one to the end
-					ifModifiedKey + ( ajax_rquery.test( ifModifiedKey ) ? "&" : "?" ) + "_=" + ajax_nonce++;
+					cacheURL + ( ajax_rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ajax_nonce++;
 			}
 		}
 
 		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
 		if ( s.ifModified ) {
-			ifModifiedKey = ifModifiedKey || s.url;
-			if ( jQuery.lastModified[ ifModifiedKey ] ) {
-				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ ifModifiedKey ] );
+			if ( jQuery.lastModified[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
 			}
-			if ( jQuery.etag[ ifModifiedKey ] ) {
-				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ ifModifiedKey ] );
+			if ( jQuery.etag[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
 			}
 		}
 
@@ -617,11 +617,11 @@ jQuery.extend({
 				if ( s.ifModified ) {
 					modified = jqXHR.getResponseHeader("Last-Modified");
 					if ( modified ) {
-						jQuery.lastModified[ ifModifiedKey ] = modified;
+						jQuery.lastModified[ cacheURL ] = modified;
 					}
 					modified = jqXHR.getResponseHeader("etag");
 					if ( modified ) {
-						jQuery.etag[ ifModifiedKey ] = modified;
+						jQuery.etag[ cacheURL ] = modified;
 					}
 				}
 
-- 
2.39.5