From dfa2c247e0dbdbf506f5175a1c839bfd09caecd9 Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Mon, 20 Feb 2017 14:23:01 +0000
Subject: [PATCH] keg: simplify code, handle exceptions.

---
 Library/Homebrew/keg.rb | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index dfbf0ad98d..b31997d5a9 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -239,9 +239,7 @@ class Keg
 
   def remove_opt_record
     opt_record.unlink
-    aliases.each do |a|
-      (opt_record.parent/a).unlink
-    end
+    aliases.each { |a| (opt_record.parent/a).unlink }
     opt_record.parent.rmdir_if_possible
   end
 
@@ -465,12 +463,9 @@ class Keg
   end
 
   def aliases
-    formula_name = rack.basename.to_s
-    aliases_path = Formula[formula_name].tap.path/"Aliases"
-    result = aliases_path.children.select do |c|
-      c.symlink? && c.readlink.basename(".rb").to_s == formula_name
-    end
-    result.map(&:basename).map(&:to_s)
+    Formula[rack.basename.to_s].aliases
+  rescue FormulaUnavailableError
+    []
   end
 
   def optlink(mode = OpenStruct.new)