rescue block for the method and added redcarpet as option for parser

lib/jekyll/converters/markdown.rb

@@ -19,7 +19,7 @@ module Jekyll
             MarukuParser.new @config
           else
             STDERR.puts "Invalid Markdown processor: #{@config['markdown']}"
-            STDERR.puts "  Valid options are [ maruku | rdiscount | kramdown ]"
+            STDERR.puts "  Valid options are [ maruku | rdiscount | kramdown | redcarpet ]"
             raise FatalException.new("Invalid Markdown process: #{@config['markdown']}")
         end
         @setup = true

lib/jekyll/converters/parsers/redcarpet_parser.rb

@@ -3,31 +3,29 @@ module Jekyll
     class Markdown
       class RedcarpetParser
         def initialize(config)
-          begin
-            require 'redcarpet'
-            @config = config
-            @redcarpet_extensions = {}
-            @config['redcarpet']['extensions'].each { |e| @redcarpet_extensions[e.to_sym] = true }
+          require 'redcarpet'
+          @config = config
+          @redcarpet_extensions = {}
+          @config['redcarpet']['extensions'].each { |e| @redcarpet_extensions[e.to_sym] = true }
 
-            @renderer ||= Class.new(Redcarpet::Render::HTML) do
-              def block_code(code, lang)
-                lang = lang && lang.split.first || "text"
-                output = add_code_tags(
-                  Pygments.highlight(code, :lexer => lang, :options => { :encoding => 'utf-8' }),
-                  lang
-                )
-              end
-
-              def add_code_tags(code, lang)
-                code = code.sub(/<pre>/,'<pre><code class="' + lang + '">')
-                code = code.sub(/<\/pre>/,"</code></pre>")
-              end
+          @renderer ||= Class.new(Redcarpet::Render::HTML) do
+            def block_code(code, lang)
+              lang = lang && lang.split.first || "text"
+              output = add_code_tags(
+                Pygments.highlight(code, :lexer => lang, :options => { :encoding => 'utf-8' }),
+                lang
+              )
+            end
+
+            def add_code_tags(code, lang)
+              code = code.sub(/<pre>/,'<pre><code class="' + lang + '">')
+              code = code.sub(/<\/pre>/,"</code></pre>")
             end
-          rescue LoadError
-            STDERR.puts 'You are missing a library required for Markdown. Please run:'
-            STDERR.puts '  $ [sudo] gem install redcarpet'
-            raise FatalException.new("Missing dependency: redcarpet")
           end
+        rescue LoadError
+          STDERR.puts 'You are missing a library required for Markdown. Please run:'
+          STDERR.puts '  $ [sudo] gem install redcarpet'
+          raise FatalException.new("Missing dependency: redcarpet")
         end
 
         def convert(content)