Do not delete repositories in _site upon build.

bin/jekyll

@@ -141,6 +141,10 @@ opts = OptionParser.new do |opts|
     options['url'] = url
   end
 
+  opts.on("--keep-repos FALSE", "Whether to delete Git, SVN or Mercurial repository in site destination") do
+    options['keep_repos'] = false
+  end
+
   opts.on("--version", "Display current version") do
     puts "Jekyll " + Jekyll::VERSION
     exit 0

lib/jekyll.rb

@@ -59,6 +59,7 @@ module Jekyll
     'source'       => Dir.pwd,
     'destination'  => File.join(Dir.pwd, '_site'),
     'plugins'      => File.join(Dir.pwd, '_plugins'),
+    'keep_repos'   => true,
 
     'future'       => true,
     'lsi'          => false,

lib/jekyll/site.rb

@@ -5,7 +5,8 @@ module Jekyll
   class Site
     attr_accessor :config, :layouts, :posts, :pages, :static_files,
                   :categories, :exclude, :include, :source, :dest, :lsi, :pygments,
-                  :permalink_style, :tags, :time, :future, :safe, :plugins, :limit_posts
+                  :permalink_style, :tags, :time, :future, :safe, :plugins, :limit_posts,
+                  :keep_repos
 
     attr_accessor :converters, :generators
 
@@ -26,6 +27,7 @@ def initialize(config)
       self.include         = config['include'] || []
       self.future          = config['future']
       self.limit_posts     = config['limit_posts'] || nil
+      self.keep_repos      = config['keep_repos']
 
       self.reset
       self.setup
@@ -217,7 +219,11 @@ def cleanup
       # all files and directories in destination, including hidden ones
       dest_files = Set.new
       Dir.glob(File.join(self.dest, "**", "*"), File::FNM_DOTMATCH) do |file|
-        dest_files << file unless file =~ /\/\.{1,2}$/
+        if self.keep_repos
+          dest_files << file unless file =~ /\/\.{1,2}$/ or file =~ /\/\.(git|hg|svn)/
+        else
+          dest_files << file unless file =~ /\/\.{1,2}$/
+        end
       end
 
       # files to be written

test/test_site.rb

@@ -180,13 +180,24 @@ class TestSite < Test::Unit::TestCase
         File.open(dest_dir('qux/obsolete.html'), 'w')
         # empty directory
         FileUtils.mkdir(dest_dir('quux'))
+				# repositories
+        FileUtils.mkdir(dest_dir('.git'))
+        FileUtils.mkdir(dest_dir('.svn'))
+        FileUtils.mkdir(dest_dir('.hg'))
+				# single file in repository
+        File.open(dest_dir('.git/HEAD'), 'w')
+        File.open(dest_dir('.svn/HEAD'), 'w')
+        File.open(dest_dir('.hg/HEAD'), 'w')
       end
 
       teardown do
         FileUtils.rm_f(dest_dir('.htpasswd'))
         FileUtils.rm_f(dest_dir('obsolete.html'))
         FileUtils.rm_rf(dest_dir('qux'))
         FileUtils.rm_f(dest_dir('quux'))
+        FileUtils.rm_rf(dest_dir('.git'))
+        FileUtils.rm_rf(dest_dir('.svn'))
+        FileUtils.rm_rf(dest_dir('.hg'))
       end
 
       should 'remove orphaned files in destination' do
@@ -195,6 +206,12 @@ class TestSite < Test::Unit::TestCase
         assert !File.exist?(dest_dir('obsolete.html'))
         assert !File.exist?(dest_dir('qux'))
         assert !File.exist?(dest_dir('quux'))
+        assert File.exist?(dest_dir('.git'))
+        assert File.exist?(dest_dir('.svn'))
+        assert File.exist?(dest_dir('.hg'))
+        assert File.exist?(dest_dir('.git/HEAD'))
+        assert File.exist?(dest_dir('.svn/HEAD'))
+        assert File.exist?(dest_dir('.hg/HEAD'))
       end
 
     end