Pathname: add cp_path_sub method.

This method allows copying a file to a new location by performing a
substitution on the pathname.

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Homebrew/install_renamed.rb b/Library/Homebrew/install_renamed.rb
index e0a69beec..5f34eb674 100644
--- a/Library/Homebrew/install_renamed.rb
+++ b/Library/Homebrew/install_renamed.rb
@@ -6,6 +6,12 @@ module InstallRenamed
     end
   end
 
+  def cp_path_sub pattern, replacement
+    super do |src, dst|
+      append_default_if_different(src, dst)
+    end
+  end
+
   private
 
   def append_default_if_different src, dst