Don't use underscores in (new) bottle filenames.

Closes Homebrew/homebrew#14270

Library/Homebrew/extend/pathname.rb

@@ -5,7 +5,7 @@ require 'mach'
 class Pathname
   include MachO
 
-  BOTTLE_EXTNAME_RX = /(\.[a-z]+\.bottle\.(\d+\.)?tar\.gz)$/
+  BOTTLE_EXTNAME_RX = /(\.[a-z_]+\.bottle\.(\d+\.)?tar\.gz)$/
 
   def install *sources
     results = []

Library/Homebrew/formula.rb

@@ -40,6 +40,9 @@ class Formula
     # then a bottle is not available for the current platform.
     if @bottle and not (@bottle.checksum.nil? or @bottle.checksum.empty?)
       @bottle.url ||= bottle_base_url + bottle_filename(self)
+      if @bottle.cat_without_underscores
+        @bottle.url.gsub!(MacOS.cat.to_s, MacOS.cat_without_underscores.to_s)
+      end
     else
       @bottle = nil
     end

Library/Homebrew/formula_support.rb

@@ -81,10 +81,13 @@ end
 class Bottle < SoftwareSpec
   attr_writer :url
   attr_reader :revision
+  # TODO: Can be removed when all bottles migrated to underscored cat symbols.
+  attr_reader :cat_without_underscores
 
   def initialize url=nil, version=nil
     super
     @revision = 0
+    @cat_without_underscores = false
   end
 
   # Checksum methods in the DSL's bottle block optionally take
@@ -103,7 +106,12 @@ class Bottle < SoftwareSpec
           @#{cksum}[value] = Checksum.new(:#{cksum}, key)
         end
 
-        @checksum = @#{cksum}[MacOS.cat] if @#{cksum}.has_key? MacOS.cat
+        if @#{cksum}.has_key? MacOS.cat
+          @checksum = @#{cksum}[MacOS.cat]
+        elsif @#{cksum}.has_key? MacOS.cat_without_underscores
+          @checksum = @#{cksum}[MacOS.cat_without_underscores]
+          @cat_without_underscores = true
+        end
       end
     }
   end

Library/Homebrew/macos.rb

@@ -8,14 +8,21 @@ module MacOS extend self
   end
 
   def cat
-    if version == :mountain_lion then :mountainlion
+    if version == :mountain_lion then :mountain_lion
     elsif version == :lion then :lion
-    elsif version == :snow_leopard then :snowleopard
+    elsif version == :snow_leopard then :snow_leopard
     elsif version == :leopard then :leopard
     else nil
     end
   end
 
+  # TODO: Can be removed when all bottles migrated to underscored cat symbols.
+  def cat_without_underscores
+    possibly_underscored_cat = cat
+    return nil unless possibly_underscored_cat
+    cat.to_s.gsub('_', '').to_sym
+  end
+
   def locate tool
     # Don't call tools (cc, make, strip, etc.) directly!
     # Give the name of the binary you look for as a string to this method

Library/Homebrew/test/test_bottles.rb

@@ -19,7 +19,7 @@ class BottleTests < Test::Unit::TestCase
       f = SnowLeopardBottleSpecTestBall.new
 
       assert_equal case MacOS.cat
-        when :snowleopard then f.bottle
+        when :snow_leopard then f.bottle
         else f.stable
         end, f.active_spec
 

Library/Homebrew/test/test_formula.rb

@@ -103,9 +103,9 @@ class FormulaTests < Test::Unit::TestCase
     assert_equal :sha1, f.bottle.checksum.hash_type
     assert_equal :sha256, f.devel.checksum.hash_type
     assert_equal case MacOS.cat
-      when :snowleopard then 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
+      when :snow_leopard then 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
       when :lion then 'baadf00dbaadf00dbaadf00dbaadf00dbaadf00d'
-      when :mountainlion then '8badf00d8badf00d8badf00d8badf00d8badf00d'
+      when :mountain_lion then '8badf00d8badf00d8badf00d8badf00d8badf00d'
       end, f.bottle.checksum.hexdigest
     assert_match /[0-9a-fA-F]{40}/, f.stable.checksum.hexdigest
     assert_match /[0-9a-fA-F]{64}/, f.devel.checksum.hexdigest
@@ -241,9 +241,9 @@ class FormulaTests < Test::Unit::TestCase
 
     assert_equal 1, f.bottle.revision
     assert_equal case MacOS.cat
-      when :snowleopard then 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
+      when :snow_leopard then 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef'
       when :lion then 'baadf00dbaadf00dbaadf00dbaadf00dbaadf00d'
-      when :mountainlion then '8badf00d8badf00d8badf00d8badf00d8badf00d'
+      when :mountain_lion then '8badf00d8badf00d8badf00d8badf00d8badf00d'
       end, f.bottle.checksum.hexdigest
   end
 

Library/Homebrew/test/test_versions.rb

@@ -212,7 +212,7 @@ class VersionParsingTests < Test::Unit::TestCase
   end
 
   def test_another_erlang_bottle_style
-    assert_version_detected 'R15B01', 'https://downloads.sf.net/project/machomebrew/Bottles/erlang-R15B01.mountainlion.bottle.tar.gz'
+    assert_version_detected 'R15B01', 'https://downloads.sf.net/project/machomebrew/Bottles/erlang-R15B01.mountain_lion.bottle.tar.gz'
   end
 
   def test_yet_another_erlang_bottle_style

Library/Homebrew/test/testball.rb

@@ -107,9 +107,9 @@ class SpecTestBall < Formula
   end
 
   bottle do
-    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snowleopard
+    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snow_leopard
     sha1 'baadf00dbaadf00dbaadf00dbaadf00dbaadf00d' => :lion
-    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountainlion
+    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountain_lion
   end
 
   def initialize name=nil
@@ -189,7 +189,7 @@ class SnowLeopardBottleSpecTestBall < Formula
   sha1 '482e737739d946b7c8cbaf127d9ee9c148b999f5'
 
   bottle do
-    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snowleopard
+    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snow_leopard
   end
 
   def initialize name=nil
@@ -217,9 +217,9 @@ class AllCatsBottleSpecTestBall < Formula
   sha1 '482e737739d946b7c8cbaf127d9ee9c148b999f5'
 
   bottle do
-    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snowleopard
+    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snow_leopard
     sha1 'baadf00dbaadf00dbaadf00dbaadf00dbaadf00d' => :lion
-    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountainlion
+    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountain_lion
   end
 
   def initialize name=nil
@@ -234,9 +234,9 @@ class RevisedBottleSpecTestBall < Formula
 
   bottle do
     version 1
-    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snowleopard
+    sha1 'deadbeefdeadbeefdeadbeefdeadbeefdeadbeef' => :snow_leopard
     sha1 'baadf00dbaadf00dbaadf00dbaadf00dbaadf00d' => :lion
-    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountainlion
+    sha1 '8badf00d8badf00d8badf00d8badf00d8badf00d' => :mountain_lion
   end
 
   def initialize name=nil