4 files changed, 8 insertions, 15 deletions
diff --git a/Library/Formula/graphicsmagick.rb b/Library/Formula/graphicsmagick.rb
index f09847b1f..b5cdd6c2a 100644
--- a/Library/Formula/graphicsmagick.rb
+++ b/Library/Formula/graphicsmagick.rb
@@ -40,9 +40,7 @@ class Graphicsmagick < Formula
     build 2335
   end
 
-  def skip_clean? path
-    path.extname == '.la'
-  end
+  skip_clean :la
 
   option 'with-ghostscript', 'Compile against ghostscript (not recommended.)'
   option 'without-magick-plus-plus', "Don't build C++ library."
diff --git a/Library/Formula/imagemagick.rb b/Library/Formula/imagemagick.rb
index b8a46f988..694ab4e03 100644
--- a/Library/Formula/imagemagick.rb
+++ b/Library/Formula/imagemagick.rb
@@ -59,9 +59,7 @@ class Imagemagick < Formula
     sha1 '019400feda06e4f277187702a4baeacdfdbf4851' => :snowleopard
   end
 
-  def skip_clean? path
-    path.extname == '.la'
-  end
+  skip_clean :la
 
   def patches
     # Fixes xml2-config that can be missing --prefix.  See issue #11789
diff --git a/Library/Formula/proj.rb b/Library/Formula/proj.rb
index c0fa9d145..6427a7920 100644
--- a/Library/Formula/proj.rb
+++ b/Library/Formula/proj.rb
@@ -6,23 +6,22 @@ class ProjDatumgrid < Formula
 end
 
 class Proj < Formula
-  url 'http://download.osgeo.org/proj/proj-4.8.0.tar.gz'
   homepage 'http://trac.osgeo.org/proj/'
+  url 'http://download.osgeo.org/proj/proj-4.8.0.tar.gz'
   sha1 '5c8d6769a791c390c873fef92134bf20bb20e82a'
 
+  skip_clean :la
+
   fails_with :llvm do
     build 2334
   end
 
-  def skip_clean? path
-    path.extname == '.la'
-  end
-
   def install
     # The datum grid files are required to support datum shifting
     ProjDatumgrid.new.brew { cp Dir["*"], buildpath/'nad' }
 
-    system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking"
+    system "./configure", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}"
     system "make install"
   end
 end
diff --git a/Library/Formula/xapian.rb b/Library/Formula/xapian.rb
index fe3a39890..541423fdb 100644
--- a/Library/Formula/xapian.rb
+++ b/Library/Formula/xapian.rb
@@ -16,9 +16,7 @@ class Xapian < Formula
   option "python", "Python bindings"
   option "ruby",   "Ruby bindings"
 
-  def skip_clean? path
-    path.extname == '.la'
-  end
+  skip_clean :la
 
   def build_any_bindings?
     build.include? 'ruby' or build.include? 'python' or build.include? 'java' or build.include? 'php'