added the ability to disable magic sprites

Gemfile.lock

@@ -7,7 +7,7 @@ GIT
 PATH
   remote: .
   specs:
-    compass (0.11.beta.7.5b9a90f)
+    compass (0.11.beta.7.3e013b8)
       chunky_png (~> 1.1.0)
       sass (>= 3.1.0.alpha.249)
 

frameworks/compass/stylesheets/compass/utilities/sprites/_base.scss

@@ -20,13 +20,18 @@ $sprite-selectors: hover, target, active !default;
 // class or you can specify the `sprite-url` explicitly like this:
 //
 //     background: $map no-repeat;
+
+$disable-magic-sprite-selectors:false !default;
+
 @mixin sprite($map, $sprite, $dimensions: false, $offset-x: 0, $offset-y: 0) {
   @include sprite-background-position($map, $sprite, $offset-x, $offset-y);
   @if $dimensions {
     @include sprite-dimensions($map, $sprite);
   }
+  @if not $disable-magic-sprite-selectors {
     @include sprite-selectors($map, $sprite, $sprite);
   }
+}
 
 // Include the selectors for the `$sprite` given the `$map` and the 
 // `$full-sprite-name`

spec/sprites_spec.rb

@@ -517,6 +517,25 @@ describe Compass::Sprites do
     CSS
   end
   
+  it "should not render corret sprite with css selectors via magic mixin" do
+    css = render <<-SCSS
+      @import "selectors/*.png";
+      a {
+        $disable-magic-sprite-selectors:true;
+        @include selectors-sprite(ten-by-ten)
+      }
+    SCSS
+    css.should == <<-CSS
+      .selectors-sprite, a {
+        background: url('/selectors-edfef809e2.png') no-repeat;
+      }
+      
+      a {
+        background-position: 0 0;
+      }
+    CSS
+  end
+  
   it "should raise error on filenames that are not valid sass syntax" do
     lambda do
       render <<-SCSS