Teach Pathname how to scan for metafiles

Library/Homebrew/build.rb

@@ -144,22 +144,11 @@ def install f
       end
 
       # Find and link metafiles
-      install_meta_files Pathname.pwd, f.prefix
+      f.prefix.install_metafiles Pathname.pwd
     end
   end
 end
 
-def install_meta_files src_path, dst_path
-  src_path.children.each do |p|
-    next if p.directory?
-    next unless FORMULA_META_FILES.should_copy? p
-    # Some software symlinks these files (see help2man.rb)
-    filename = p.resolved_path
-    filename.chmod 0644
-    dst_path.install filename
-  end
-end
-
 def fixopt f
   path = if f.linked_keg.directory? and f.linked_keg.symlink?
     f.linked_keg.realpath

Library/Homebrew/extend/pathname.rb

@@ -373,6 +373,21 @@ class Pathname
     EOS
   end
 
+  def install_metafiles from=nil
+    # Default to current path, and make sure we have a pathname, not a string
+    from = "." if from.nil?
+    from = Pathname.new(from.to_s)
+
+    from.children.each do |p|
+      next if p.directory?
+      next unless FORMULA_META_FILES.should_copy? p
+      # Some software symlinks these files (see help2man.rb)
+      filename = p.resolved_path
+      filename.chmod 0644
+      self.install filename
+    end
+  end
+
 end
 
 # sets $n and $d so you can observe creation of stuff