Don't have any known features in the 3.3 release.

sass · Jun 11, 2013 · 3f4b81a · nex3 · Jun 14, 2013 · nex3
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diff --git a/doc-src/SASS_CHANGELOG.md b/doc-src/SASS_CHANGELOG.md
@@ -60,8 +60,9 @@ Thanks to Alexander Pavlov for implementing this.
   return a CSS identifier that is unique within the scope of a single CSS file.
 
 * You can now detect the presence of a Sass feature using the new function
-  `sass-supports($feature)`. For now, `sass-supports(sourcemaps)` is the
-  only value for which the function returns true.
+  `sass-supports($feature-name)`. There are no detectable features in this
+  release, this is provided so that subsequent releases can begin to
+  use it.
 
 ### Backwards Incompatibilities -- Must Read!
 

diff --git a/lib/sass/features.rb b/lib/sass/features.rb
@@ -7,7 +7,6 @@ module Features
 
     # This is the set of features that can be detected.
     KNOWN_FEATURES = Set[*%w{
-      sourcemaps
     }]
 
     # Check if a feature exists by name. This is used to implement

diff --git a/lib/sass/script/functions.rb b/lib/sass/script/functions.rb
@@ -1321,9 +1321,11 @@ def type_of(value)
     # Returns true if the feature name specified exists in this version of Sass.
     #
     # @example
-    #   sass-supports(sourcemaps) => true
-    #   sass-supports(whatisthisidontknow) => false
+    #   sass-supports(some-feature-that-exists) => true
+    #   sass-supports(what-is-this-i-dont-know) => false
+    #
     # @param feature [Sass::Script::Value::String] The name of the feature to check
+    #
     # @return [Sass::Script::Value::Bool] Whether the feature is supported in this version of Sass.
     def sass_supports(feature)
       Sass::Script::Value::Bool.new(Sass.has_feature?(feature.value))

diff --git a/test/sass/functions_test.rb b/test/sass/functions_test.rb
@@ -978,9 +978,10 @@ def test_type_of
   end
 
   def test_sass_supports
-    assert_equal("true", evaluate("sass-supports(sourcemaps)"))
+    Sass::Features::KNOWN_FEATURES << "my-test-feature"
+    assert_equal("true", evaluate("sass-supports(my-test-feature)"))
     assert_equal("false", evaluate("sass-supports(whatisthisidontevenknow)"))
-    assert_equal("true", evaluate("sass-supports($feature: sourcemaps)"))
+    assert_equal("true", evaluate("sass-supports($feature: my-test-feature)"))
   end
 
   def test_unit