From e3068f631acefe4ad3db3fef3393116687b0774d Mon Sep 17 00:00:00 2001
From: Jack Nagel <jacknagel@gmail.com>
Date: Mon, 7 Jan 2013 17:50:23 -0600
Subject: [PATCH] Prune LinkedKegs relative to correct path

Fixes Homebrew/homebrew#16948.
---
 Library/Homebrew/cmd/doctor.rb | 2 +-
 Library/Homebrew/cmd/prune.rb  | 2 +-
 Library/Homebrew/keg.rb        | 4 +++-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 752f80930d..76f35bb122 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -202,7 +202,7 @@ end
 def check_for_broken_symlinks
   require 'keg'
   broken_symlinks = []
-  Keg::PRUNEABLE_DIRECTORIES.map { |d| HOMEBREW_PREFIX/d }.each do |d|
+  Keg::PRUNEABLE_DIRECTORIES.each do |d|
     next unless d.directory?
     d.find do |pn|
       broken_symlinks << pn if pn.symlink? and pn.readlink.expand_path.to_s =~ /^#{HOMEBREW_PREFIX}/ and not pn.exist?
diff --git a/Library/Homebrew/cmd/prune.rb b/Library/Homebrew/cmd/prune.rb
index 394b8ad7ff..29e57ee3ef 100644
--- a/Library/Homebrew/cmd/prune.rb
+++ b/Library/Homebrew/cmd/prune.rb
@@ -9,7 +9,7 @@ module Homebrew extend self
     $d = 0
     dirs = []
 
-    Keg::PRUNEABLE_DIRECTORIES.map{ |d| HOMEBREW_PREFIX/d }.each do |path|
+    Keg::PRUNEABLE_DIRECTORIES.each do |path|
       next unless path.directory?
       path.find do |path|
         path.extend ObserverPathnameExtension
diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 0560b6f268..3a4d012622 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -11,7 +11,9 @@ class Keg < Pathname
   LOCALEDIR_RX = /(locale|man)\/([a-z]{2}|C|POSIX)(_[A-Z]{2})?(\.[a-zA-Z\-0-9]+(@.+)?)?/
   INFOFILE_RX = %r[info/([^.].*?\.info|dir)$]
   TOP_LEVEL_DIRECTORIES = %w[bin etc include lib sbin share var Frameworks]
-  PRUNEABLE_DIRECTORIES = %w[bin etc include lib sbin share Frameworks Library/LinkedKegs]
+  PRUNEABLE_DIRECTORIES = %w[bin etc include lib sbin share Frameworks LinkedKegs].map do |d|
+    case d when 'LinkedKegs' then HOMEBREW_LIBRARY/d else HOMEBREW_PREFIX/d end
+  end
 
   # if path is a file in a keg then this will return the containing Keg object
   def self.for path