Make asset_cache_buster return a hash with path and query, while still maintaining support for cache busting via query string if a string is returned.

lib/compass/sass_extensions/functions/urls.rb

@@ -138,11 +138,17 @@ module Compass::SassExtensions::Functions::Urls
   def cache_busted_path(path, real_path)
     cache_buster = compute_cache_buster(path, real_path)
     if cache_buster.nil?
-      path
-    elsif cache_buster =~ %r{/}
-      cache_buster
+      return path
+    elsif cache_buster.is_a?(String)
+      cache_buster = {:query => cache_buster}
     else
-      "%s?%s" % [path, cache_buster]
+      path = cache_buster[:path] if cache_buster[:path]
+    end
+    
+    if cache_buster[:query]
+      "%s?%s" % [path, cache_buster[:query]]
+    else
+      path
     end
   end
 

test/fixtures/stylesheets/busted_image_urls/config.rb

@@ -11,7 +11,16 @@ line_comments = false
 
 asset_cache_buster do |path, file|
   pathname = Pathname.new(path)
-  "%s/%s-BUSTED%s" % [pathname.dirname, pathname.basename(pathname.extname), pathname.extname]
+  
+  case pathname.basename(pathname.extname).to_s
+  when "grid"
+    new_path = "%s/%s-BUSTED%s" % [pathname.dirname, pathname.basename(pathname.extname), pathname.extname]
+    {:path => new_path, :query => nil}
+  when "feed"
+    "query_string"
+  when "dk"
+    {:query => "query_string"}
+  end
 end
 
 

test/fixtures/stylesheets/busted_image_urls/css/screen.css

@@ -3,3 +3,7 @@
 .inlinegrid { background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACgAAAAUEAYAAACv1qP4AAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAZ0lEQVRYw+3QwQ2AIBAFUTEUwI3+uzN7gDscsIgxEuO8An52J11X73OudfxMraXkzHfO3Y98nQEhA0IGhAwIGRAyIGRAyICQASEDQgaEDAgZEDIgZEDIgJABoZzSGK3tPuN9ERFP7Nw4fg+c5g8V1wAAAABJRU5ErkJggg=='); }
 
 .no-buster { background-image: url('http://assets0.example.com/images/grid.png'); }
+
+.feed { background-image: url('http://assets0.example.com/images/feed.png?query_string'); }
+
+.dk { background-image: url('http://assets0.example.com/images/flags/dk.png?query_string'); }

test/fixtures/stylesheets/busted_image_urls/sass/screen.sass

@@ -6,3 +6,9 @@
 
 .no-buster
   background-image: image-url("grid.png", $only-path: false, $cache-buster: false)
+
+.feed
+  background-image: image-url(unquote("feed.png"))
+
+.dk
+  background-image: image-url(unquote("flags/dk.png"))