Teach commands to work with revisions

Library/Homebrew/cmd/cleanup.rb

@@ -31,7 +31,7 @@ module Homebrew extend self
 
   def cleanup_formula f
     if f.installed?
-      eligible_kegs = f.rack.subdirs.map { |d| Keg.new(d) }.select { |k| f.version > k.version }
+      eligible_kegs = f.rack.subdirs.map { |d| Keg.new(d) }.select { |k| f.pkg_version > k.version }
       eligible_kegs.each do |keg|
         if f.can_cleanup?
           cleanup_keg(keg)

Library/Homebrew/cmd/outdated.rb

@@ -5,7 +5,7 @@ module Homebrew extend self
   def outdated
     outdated_brews do |f, versions|
       if $stdout.tty? and not ARGV.flag? '--quiet'
-        puts "#{f.name} (#{versions*', '} < #{f.version})"
+        puts "#{f.name} (#{versions*', '} < #{f.pkg_version})"
       else
         puts f.name
       end
@@ -15,7 +15,7 @@ module Homebrew extend self
   def outdated_brews
     Formula.installed.map do |f|
       versions = f.rack.subdirs.map { |d| Keg.new(d).version }.sort!
-      if versions.all? { |version| f.version > version }
+        if versions.all? { |version| f.pkg_version > version }
         yield f, versions if block_given?
         f
       end

Library/Homebrew/cmd/upgrade.rb

@@ -36,14 +36,14 @@ module Homebrew extend self
 
     unless outdated.empty?
       oh1 "Upgrading #{outdated.length} outdated package#{outdated.length.plural_s}, with result:"
-      puts outdated.map{ |f| "#{f.name} #{f.version}" } * ", "
+      puts outdated.map{ |f| "#{f.name} #{f.pkg_version}" } * ", "
     else
       oh1 "No packages to upgrade"
     end
 
     unless upgrade_pinned? || pinned.empty?
       oh1 "Not upgrading #{pinned.length} pinned package#{pinned.length.plural_s}:"
-      puts pinned.map{ |f| "#{f.name} #{f.version}" } * ", "
+      puts pinned.map{ |f| "#{f.name} #{f.pkg_version}" } * ", "
     end
 
     outdated.each { |f| upgrade_formula(f) }