Don't remove linked formulas when doing a 'cleanup'

Closes Homebrew/homebrew#16947.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/Library/Homebrew/cmd/cleanup.rb b/Library/Homebrew/cmd/cleanup.rb
index 59f47493f..6f078f720 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}"