From c1220975b91d7627ce8b868e2ee36bcabe908fc2 Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Tue, 28 Aug 2012 10:59:46 -0700
Subject: [PATCH] Refactor brew list

---
 Library/Homebrew/cmd/list.rb | 45 +++++++++++++++++++++++-------------
 1 file changed, 29 insertions(+), 16 deletions(-)

diff --git a/Library/Homebrew/cmd/list.rb b/Library/Homebrew/cmd/list.rb
index 54292f513b..602396e4a7 100644
--- a/Library/Homebrew/cmd/list.rb
+++ b/Library/Homebrew/cmd/list.rb
@@ -1,31 +1,44 @@
 module Homebrew extend self
   def list
-    # Cellar doesn't until the first formula is installed.
+
+    # Use of exec means we don't explicitly exit
+    list_unbrewed if ARGV.flag? '--unbrewed'
+
+    # Unbrewed uses the PREFIX, which will exist
+    # Things below use the CELLAR, which doesn't until the first formula is installed.
     return unless HOMEBREW_CELLAR.exist?
 
-    if ARGV.flag? '--unbrewed'
-      dirs = HOMEBREW_PREFIX.children.select{ |pn| pn.directory? }.map{ |pn| pn.basename.to_s }
-      dirs -= %w[Library Cellar .git]
-      cd HOMEBREW_PREFIX
-      exec 'find', *dirs + %w[-type f ( ! -iname .ds_store ! -iname brew ! -iname brew-man.1 ! -iname brew.1 )]
-    elsif ARGV.flag? '--versions'
-      if ARGV.named.empty?
-        HOMEBREW_CELLAR.children.select{ |pn| pn.directory? }
-      else
-        ARGV.named.map{ |n| HOMEBREW_CELLAR+n }.select{ |pn| pn.exist? }
-      end.each do |d|
-        versions = d.children.select{ |pn| pn.directory? }.map{ |pn| pn.basename.to_s }
-        puts "#{d.basename} #{versions*' '}"
-      end
+    if ARGV.flag? '--versions'
+      list_versions
     elsif ARGV.named.empty?
       ENV['CLICOLOR'] = nil
-      exec 'ls', *ARGV.options_only << HOMEBREW_CELLAR if HOMEBREW_CELLAR.exist?
+      exec 'ls', *ARGV.options_only << HOMEBREW_CELLAR
     elsif ARGV.verbose? or not $stdout.tty?
       exec "find", *ARGV.kegs + %w[-not -type d -print]
     else
       ARGV.kegs.each{ |keg| PrettyListing.new keg }
     end
   end
+
+private
+
+  def list_unbrewed
+    dirs = HOMEBREW_PREFIX.children.select{ |pn| pn.directory? }.map{ |pn| pn.basename.to_s }
+    dirs -= %w[Library Cellar .git]
+    cd HOMEBREW_PREFIX
+    exec 'find', *dirs + %w[-type f ( ! -iname .ds_store ! -iname brew ! -iname brew-man.1 ! -iname brew.1 )]
+  end
+
+  def list_versions
+    if ARGV.named.empty?
+      HOMEBREW_CELLAR.children.select{ |pn| pn.directory? }
+    else
+      ARGV.named.map{ |n| HOMEBREW_CELLAR+n }.select{ |pn| pn.exist? }
+    end.each do |d|
+      versions = d.children.select{ |pn| pn.directory? }.map{ |pn| pn.basename.to_s }
+      puts "#{d.basename} #{versions*' '}"
+    end
+  end
 end
 
 class PrettyListing