Better fix for encoding problems on rendering of inline file visualizations like README files.

app/views/refs/_tree.html.haml

@@ -42,9 +42,9 @@
         .readme
           - if content.name =~ /\.(md|markdown)$/i
             = preserve do
-              = markdown(content.data.force_encoding('UTF-8'))
+              = markdown(content.data.detect_encoding!)
           - else
-            = simple_format(content.data.force_encoding('UTF-8'))
+            = simple_format(content.data.detect_encoding!)
 
 - if params[:path]
   - history_path = tree_file_project_ref_path(@project, @ref, params[:path])

app/views/refs/_tree_file.html.haml

@@ -13,7 +13,7 @@
       #tree-readme-holder
         .readme
           = preserve do
-            = markdown(file.data.force_encoding('UTF-8'))
+            = markdown(file.data.detect_encoding!)
     - else
       .view_file_content
         - unless file.empty?

lib/gitlabhq/encode.rb

+# Patch Strings to enable detect_encoding! on views
+require 'charlock_holmes/string'
+
 module Gitlabhq
   module Encode 
     extend self