Allow revisions on SVN checkouts.

1 files changed, 10 insertions, 1 deletions

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index bc9c41c9e..33591a6b1 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -111,7 +111,16 @@ class SubversionDownloadStrategy <AbstractDownloadStrategy
     ohai "Checking out #{@url}"
     @co=HOMEBREW_CACHE+@unique_token
     unless @co.exist?
-      safe_system '/usr/bin/svn', 'checkout', @url, @co
+      checkout_args = ['/usr/bin/svn', 'checkout', @url]
+      
+      if (@spec == :revision) and @ref
+        checkout_args << '-r'
+        checkout_args << @ref
+      end
+
+      checkout_args << @co
+
+      safe_system *checkout_args
     else
       # TODO svn up?
       puts "Repository already checked out"