From 9ebbe622307a590c97c17a2c63335d8b62172ee2 Mon Sep 17 00:00:00 2001
From: Nathan Weizenbaum <nex342@gmail.com>
Date: Sat, 22 Nov 2008 17:39:59 -0800
Subject: [PATCH] Support Unicode-escapes in Sass strings.

---
 lib/sass/script/lexer.rb |  2 +-
 test/sass/script_test.rb | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/sass/script/lexer.rb b/lib/sass/script/lexer.rb
index 6fca904a..96652d5e 100644
--- a/lib/sass/script/lexer.rb
+++ b/lib/sass/script/lexer.rb
@@ -85,7 +85,7 @@ module Sass
 
       def string
         return unless @scanner.scan(REGULAR_EXPRESSIONS[:string])
-        [:string, Script::String.new(@scanner[1].gsub(/\\(.)/, '\1'))]
+        [:string, Script::String.new(@scanner[1].gsub(/\\([^0-9a-f])/, '\1').gsub(/\\([0-9a-f]{1,4})/, "\\\\\\1"))]
       end
 
       def number
diff --git a/test/sass/script_test.rb b/test/sass/script_test.rb
index 2dd2ead6..f3ee1269 100644
--- a/test/sass/script_test.rb
+++ b/test/sass/script_test.rb
@@ -5,8 +5,18 @@ require 'sass/engine'
 class SassScriptTest < Test::Unit::TestCase
   include Sass::Script
 
+  def eval(str, environment = {})
+    Sass::Script.resolve(str, 0, environment)
+  end
+
   def test_color_checks_input
     assert_raise(Sass::SyntaxError, "Color values must be between 0 and 255") {Color.new([1, 2, -1])}
     assert_raise(Sass::SyntaxError, "Color values must be between 0 and 255") {Color.new([256, 2, 3])}
   end
+
+  def test_string_escapes
+    assert_equal '"', eval("\"\\\"\"")
+    assert_equal "\\", eval("\"\\\\\"")
+    assert_equal "\\02fa", eval("\"\\02fa\"")
+  end
 end