Issue 7: CGI escape post titles

Signed-off-by: Nick Quaranto <nick@quaran.to>

lib/jekyll/post.rb

@@ -127,7 +127,7 @@ module Jekyll
         "year"       => date.strftime("%Y"),
         "month"      => date.strftime("%m"),
         "day"        => date.strftime("%d"),
-        "title"      => slug,
+        "title"      => CGI.escape(slug),
         "categories" => categories.sort.join('/')
       }.inject(template) { |result, token|
         result.gsub(/:#{token.first}/, token.last)
@@ -188,7 +188,8 @@ module Jekyll
     def write(dest)
       FileUtils.mkdir_p(File.join(dest, dir))
 
-      path = File.join(dest, self.url)
+      # The url needs to be unescaped in order to preserve the correct filename
+      path = File.join(dest, CGI.unescape(self.url))
 
       if template[/\.html$/].nil?
         FileUtils.mkdir_p(path)

test/source/_posts/2009-03-12-hash-#1.markdown

@@ -0,0 +1,6 @@
+---
+layout: default
+title: Hash #1
+---
+
+Hashes are nice

test/test_post.rb

@@ -52,6 +52,13 @@ class TestPost < Test::Unit::TestCase
         assert_equal "/2008/10/19/foo-bar.html", @post.url
       end
 
+      should "CGI escape urls" do
+        @post.categories = []
+        @post.process("2009-03-12-hash-#1.markdown")
+        assert_equal "/2009/03/12/hash-%231.html", @post.url
+        assert_equal "/2009/03/12/hash-#1", @post.id
+      end
+
       should "respect permalink in yaml front matter" do
         file = "2008-12-03-permalinked-post.textile"
         @post.process(file)