Summarised listings with brew list

I'm trying to only show the interesting stuff. You can see a full listing with
brew -v list, or by piping to other commands.

Tell me if you hate it or love it.

1 files changed, 61 insertions, 0 deletions

diff --git a/Library/Homebrew/brew.h.rb b/Library/Homebrew/brew.h.rb
index 8878a72b3..535e3178d 100644
--- a/Library/Homebrew/brew.h.rb
+++ b/Library/Homebrew/brew.h.rb
@@ -244,6 +244,67 @@ def fix_PATH
   end
   ENV['PATH'] = paths*':'
 end
+
+
+########################################################## class PrettyListing
+class PrettyListing
+  def initialize path
+    Pathname.new(path).children.sort{ |a,b| a.to_s.downcase <=> b.to_s.downcase }.each do |pn|
+      case pn.basename.to_s
+      when 'bin', 'sbin'
+        pn.find { |pnn| puts pnn unless pnn.directory? }
+      when 'lib'
+        print_dir pn do |pnn|
+          # dylibs have multiple symlinks and we don't care about them
+          (pnn.extname == '.dylib' or pnn.extname == '.pc') and not pnn.symlink?
+        end
+      else
+        print_dir pn
+      end
+    end
+  end
+
+private
+  def print_dir root
+    return unless root.directory?
+
+    dirs = []
+    remaining_root_files = []
+    other = ''
+
+    root.children.sort.each do |pn|
+      if pn.directory?
+        dirs << pn
+      elsif block_given? and yield pn
+        puts pn
+        other = 'other '
+      else
+        remaining_root_files << pn 
+      end
+    end
+
+    dirs.each do |d|
+      files = []
+      d.find { |pn| files << pn unless pn.directory? }
+      print_remaining_files files, d
+    end
+
+    print_remaining_files remaining_root_files, root, other
+  end
+
+  def print_remaining_files files, root, other = ''
+    case files.length
+    when 0
+      # noop
+    when 1
+      puts *files
+    else
+      puts "#{root} (#{files.length} #{other}files)"
+    end
+  end
+end
+
+
 ################################################################ class Cleaner
 class Cleaner
   def initialize f