Fix Dir.glob with backslash paths on Windows.

doc-src/SASS_CHANGELOG.md

@@ -12,6 +12,7 @@
 * Support bare interpolation in the value portion of attribute
   selectors (e.g. `[name=#{$value}]`).
 * Support keyword arguments for the `invert()` function.
+* Handle backslash-separated paths better on Windows.
 
 ## 3.1.16
 

lib/sass/exec.rb

@@ -452,7 +452,7 @@ def split_colon_path(path)
       def probably_dest_dir?(path)
         return false unless path
         return false if colon_path?(path)
-        return Dir.glob(File.join(path, "*.s[ca]ss")).empty?
+        return Sass::Util.glob(File.join(path, "*.s[ca]ss")).empty?
       end
     end
 
@@ -584,7 +584,7 @@ def process_directory
         end
 
         ext = @options[:from]
-        Dir.glob("#{@options[:input]}/**/*.#{ext}") do |f|
+        Sass::Util.glob("#{@options[:input]}/**/*.#{ext}") do |f|
           output =
             if @options[:in_place]
               f

lib/sass/plugin/compiler.rb

@@ -188,7 +188,7 @@ def update_stylesheets(individual_files = [])
       staleness_checker = StalenessChecker.new(engine_options)
 
       template_location_array.each do |template_location, css_location|
-        Dir.glob(File.join(template_location, "**", "[^_]*.s[ca]ss")).sort.each do |file|
+        Sass::Util.glob(File.join(template_location, "**", "[^_]*.s[ca]ss")).sort.each do |file|
           # Get the relative path to the file
           name = file.sub(template_location.to_s.sub(/\/*$/, '/'), "")
           css = css_filename(name, css_location)

lib/sass/util.rb

@@ -399,6 +399,14 @@ def ironruby?
       RUBY_ENGINE == "ironruby"
     end
 
+    # Like `Dir.glob`, but works with backslash-separated paths on Windows.
+    #
+    # @param path [String]
+    def glob(path)
+      path = path.gsub('\\', '/') if windows?
+      Dir.glob(path)
+    end
+
     ## Cross-Ruby-Version Compatibility
 
     # Whether or not this is running under Ruby 1.8 or lower.