From 49310667b4e6327d8276752a74fe480c1d7fb135 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Tue, 15 Nov 2016 21:56:42 +0000
Subject: [PATCH 1/2] Revert "uninstall: remove nil requireds/dependents"

This reverts commit d7e72899e6f24dca5e02a734d5a4e64e39fc680e.
---
 Library/Homebrew/cmd/uninstall.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/cmd/uninstall.rb b/Library/Homebrew/cmd/uninstall.rb
index c08b13dad9..5d02ebd1e8 100644
--- a/Library/Homebrew/cmd/uninstall.rb
+++ b/Library/Homebrew/cmd/uninstall.rb
@@ -102,8 +102,8 @@ module Homebrew
     attr_reader :reqs, :deps
 
     def initialize(requireds, dependents)
-      @reqs = requireds.compact
-      @deps = dependents.compact
+      @reqs = requireds
+      @deps = dependents
     end
 
     protected

From fb920668c880778d9f539d9371ef12283e117903 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Sat, 31 Dec 2016 13:03:08 +0000
Subject: [PATCH 2/2] keg: don't return nil dependencies

This is a proper fix to the problem addressed by #1510.

The problem arises when f_kegs is nil, which can happen if the name and
tap used to install a keg don't match the name and tap currently
associated with its formula (i.e. if it's been renamed or moved).
---
 Library/Homebrew/keg.rb           |  2 +-
 Library/Homebrew/test/keg_test.rb | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 756b272885..b5e6bd81d1 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -119,7 +119,7 @@ class Keg
         next unless f_kegs
 
         f_kegs.sort_by(&:version).last
-      end
+      end.compact
 
       next unless required_kegs.any?
 
diff --git a/Library/Homebrew/test/keg_test.rb b/Library/Homebrew/test/keg_test.rb
index 4fe7c6a3cf..adb30164e2 100644
--- a/Library/Homebrew/test/keg_test.rb
+++ b/Library/Homebrew/test/keg_test.rb
@@ -369,6 +369,19 @@ class InstalledDependantsTests < LinkTestCase
     assert_equal [[@keg], ["bar 1.0"]], Keg.find_some_installed_dependents([@keg])
   end
 
+  def test_a_dependency_with_no_tap_in_tab
+    @tap_dep = setup_test_keg("baz", "1.0")
+
+    alter_tab(@keg) { |t| t.source["tap"] = nil }
+
+    dependencies nil
+    Formula["bar"].class.depends_on "foo"
+    Formula["bar"].class.depends_on "baz"
+
+    result = Keg.find_some_installed_dependents([@keg, @tap_dep])
+    assert_equal [[@tap_dep], ["bar"]], result
+  end
+
   def test_no_dependencies_anywhere
     dependencies nil
     assert_empty @keg.installed_dependents