From a254caecdd0139b3ba909679b260435de87733ef Mon Sep 17 00:00:00 2001
From: Chris Eppstein <chris@eppsteins.net>
Date: Sun, 19 Dec 2010 17:57:33 -0800
Subject: [PATCH] Allow a prefix to be specified (or omitted) for sprite class
 names

---
 .../stylesheets/compass/utilities/sprites/_base.scss      | 5 +++--
 lib/compass/sprites.rb                                    | 8 ++++----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/frameworks/compass/stylesheets/compass/utilities/sprites/_base.scss b/frameworks/compass/stylesheets/compass/utilities/sprites/_base.scss
index fc095761..bc749162 100644
--- a/frameworks/compass/stylesheets/compass/utilities/sprites/_base.scss
+++ b/frameworks/compass/stylesheets/compass/utilities/sprites/_base.scss
@@ -30,9 +30,10 @@
 // If a base class is provided, then each class will extend it.
 //
 // If `$dimensions` is `true`, the sprite dimensions will specified.
-@mixin sprites($map, $sprite-names, $base-class: false, $dimensions: false) {
+@mixin sprites($map, $sprite-names, $base-class: false, $dimensions: false, $prefix: sprite-map-name($map)) {
   @each $sprite-name in $sprite-names {
-    .#{sprite-map-name($map)}-#{$sprite-name} {
+    $full-sprite-name: if($prefix and $prefix != "", "#{$prefix}-#{$sprite-name}", $sprite-name);
+    .#{$full-sprite-name} {
       @if $base-class { @extend #{$base-class}; }
       @include sprite($map, $sprite-name, $dimensions);
     }
diff --git a/lib/compass/sprites.rb b/lib/compass/sprites.rb
index 2d5d0bf7..707d9bdb 100644
--- a/lib/compass/sprites.rb
+++ b/lib/compass/sprites.rb
@@ -88,13 +88,13 @@ end.join(",\n")});
   @include sprite($#{name}-sprites, $name, $dimensions, $offset-x, $offset-y)
 }
 
-@mixin #{name}-sprites($sprite-names, $dimensions: $#{name}-sprite-dimensions) {
-  @include sprites($#{name}-sprites, $sprite-names, $#{name}-sprite-base-class, $dimensions)
+@mixin #{name}-sprites($sprite-names, $dimensions: $#{name}-sprite-dimensions, $prefix: sprite-map-name($#{name}-sprites)) {
+  @include sprites($#{name}-sprites, $sprite-names, $#{name}-sprite-base-class, $dimensions, $prefix)
 }
 
 // Generates a class for each sprited image.
-@mixin all-#{name}-sprites($dimensions: $#{name}-sprite-dimensions) {
-  @include #{name}-sprites(#{images.join(" ")}, $dimensions);
+@mixin all-#{name}-sprites($dimensions: $#{name}-sprite-dimensions, $prefix: sprite-map-name($#{name}-sprites)) {
+  @include #{name}-sprites(#{images.join(" ")}, $dimensions, $prefix);
 }
 SCSS
     end