From 6661f78618a640ac9570f2003df5c359d1027579 Mon Sep 17 00:00:00 2001
From: Max Howell <max@methylblue.com>
Date: Mon, 10 Aug 2009 11:45:25 +0100
Subject: [PATCH] Allow skip_clean? to skip entire directories

Speeds up Python formula plenty in clean phase
---
 Library/Homebrew/brew.h.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/brew.h.rb b/Library/Homebrew/brew.h.rb
index 842439a8c2..f3dee102aa 100644
--- a/Library/Homebrew/brew.h.rb
+++ b/Library/Homebrew/brew.h.rb
@@ -238,7 +238,9 @@ private
 
   def clean_dir d
     d.find do |path|
-      if not path.file?
+      if path.directory?
+        Find.prune if @f.skip_clean? path
+      elsif not path.file?
         next
       elsif path.extname == '.la' and not @f.skip_clean? path
         # *.la files are stupid