From 19cf6dcb3f35ca475a5b96a56913aabb05e9918d Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Tue, 20 Jun 2017 15:27:16 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=A8=20=20Fix=20sorting=20on=20APFS.?=
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---
 Library/Homebrew/cmd/switch.rb            | 2 +-
 Library/Homebrew/formula.rb               | 4 ++--
 Library/Homebrew/test/formula_pin_spec.rb | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Library/Homebrew/cmd/switch.rb b/Library/Homebrew/cmd/switch.rb
index a40b4d88e7..8a378aed79 100644
--- a/Library/Homebrew/cmd/switch.rb
+++ b/Library/Homebrew/cmd/switch.rb
@@ -28,7 +28,7 @@ module Homebrew
     unless (rack/version).directory?
       onoe "#{name} does not have a version \"#{version}\" in the Cellar."
 
-      versions = rack.subdirs.map { |d| Keg.new(d).version }
+      versions = rack.subdirs.map { |d| Keg.new(d).version }.sort
       puts "Versions available: #{versions.join(", ")}"
 
       exit 3
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index d64191b66b..66993a348b 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -602,7 +602,7 @@ class Formula
   # All currently installed prefix directories.
   # @private
   def installed_prefixes
-    rack.directory? ? rack.subdirs : []
+    rack.directory? ? rack.subdirs.sort : []
   end
 
   # All currently installed kegs.
@@ -1182,7 +1182,7 @@ class Formula
     return false unless old_rack.directory?
     return false if old_rack.subdirs.empty?
 
-    tap == Tab.for_keg(old_rack.subdirs.first).tap
+    tap == Tab.for_keg(old_rack.subdirs.sort.first).tap
   end
 
   # @private
diff --git a/Library/Homebrew/test/formula_pin_spec.rb b/Library/Homebrew/test/formula_pin_spec.rb
index 909bfbc2b3..ce952a9574 100644
--- a/Library/Homebrew/test/formula_pin_spec.rb
+++ b/Library/Homebrew/test/formula_pin_spec.rb
@@ -9,7 +9,7 @@ describe FormulaPin do
     formula.rack.mkpath
 
     allow(formula).to receive(:installed_prefixes) do
-      formula.rack.directory? ? formula.rack.subdirs : []
+      formula.rack.directory? ? formula.rack.subdirs.sort : []
     end
 
     allow(formula).to receive(:installed_kegs) do