From 1815e6caa1bed5dfbadc8609d1b62921484f5d98 Mon Sep 17 00:00:00 2001
From: Mike Lapinsky <mike.lapinsky@synapse.com>
Date: Mon, 7 Jan 2013 13:39:02 -0800
Subject: [PATCH] Don't remove linked formulas when doing a 'cleanup'

Closes Homebrew/homebrew#16947.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
---
 Library/Homebrew/cmd/cleanup.rb | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Library/Homebrew/cmd/cleanup.rb b/Library/Homebrew/cmd/cleanup.rb
index 59f47493f4..6f078f720c 100644
--- a/Library/Homebrew/cmd/cleanup.rb
+++ b/Library/Homebrew/cmd/cleanup.rb
@@ -37,11 +37,15 @@ module Homebrew extend self
       f.rack.children.each do |keg|
         if File.directory? keg and f.version > Keg.new(keg).version
           if f.can_cleanup?
-            if ARGV.dry_run?
-              puts "Would remove: #{keg}"
+            if !Keg.new(keg).linked?
+              if ARGV.dry_run?
+                puts "Would remove: #{keg}"
+              else
+                puts "Removing: #{keg}..."
+                rm_rf keg
+              end
             else
-              puts "Removing: #{keg}..."
-              rm_rf keg
+              opoo "Skipping (old) #{keg} due to it being linked"
             end
           else
             opoo "Skipping (old) keg-only: #{keg}"