7 files changed, 33 insertions, 24 deletions
diff --git a/Library/Homebrew/dependable.rb b/Library/Homebrew/dependable.rb
index f1951e4c6..d500cd033 100644
--- a/Library/Homebrew/dependable.rb
+++ b/Library/Homebrew/dependable.rb
@@ -24,6 +24,6 @@ module Dependable
   end
 
   def options
-    Options.create(tags - RESERVED_TAGS)
+    Options.coerce(tags - RESERVED_TAGS)
   end
 end
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index d9e72702b..02e61587b 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -465,7 +465,7 @@ class FormulaInstaller
   end
 
   def build_argv
-    opts = Options.create(sanitized_ARGV_options)
+    opts = Options.coerce(sanitized_ARGV_options)
     opts.concat(options)
     opts
   end
diff --git a/Library/Homebrew/options.rb b/Library/Homebrew/options.rb
index a612f27fe..86be67ea9 100644
--- a/Library/Homebrew/options.rb
+++ b/Library/Homebrew/options.rb
@@ -53,19 +53,6 @@ class Options
   attr_reader :options
   protected :options
 
-  def self.create(array)
-    options = new
-    array.each do |e|
-      case e
-      when /^-[^-]+$/
-        e[1..-1].split(//).each { |o| options << Option.new(o) }
-      else
-        options << Option.new(e)
-      end
-    end
-    options
-  end
-
   def initialize(*args)
     @options = Set.new(*args)
   end
@@ -126,4 +113,22 @@ class Options
   def inspect
     "#<#{self.class.name}: #{to_a.inspect}>"
   end
+
+  def self.coerce(arg)
+    case arg
+    when Array
+      opts = new
+      arg.each do |a|
+        case a
+        when /^-[^-]+$/
+          a[1..-1].split(//).each { |o| opts << Option.new(o) }
+        else
+          opts << Option.new(a)
+        end
+      end
+      opts
+    else
+      raise TypeError, "Cannot convert #{arg.inspect} to Options"
+    end
+  end
 end
diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index 9fda2cef9..e88975a73 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -34,7 +34,7 @@ class SoftwareSpec
     @bottle_specification = BottleSpecification.new
     @patches = []
     @options = Options.new
-    @build = BuildOptions.new(Options.create(ARGV.options_only), options)
+    @build = BuildOptions.new(Options.coerce(ARGV.options_only), options)
   end
 
   def owner= owner
diff --git a/Library/Homebrew/tab.rb b/Library/Homebrew/tab.rb
index daf701591..edba1d0e6 100644
--- a/Library/Homebrew/tab.rb
+++ b/Library/Homebrew/tab.rb
@@ -106,11 +106,11 @@ class Tab < OpenStruct
   end
 
   def used_options
-    Options.create(super)
+    Options.coerce(super)
   end
 
   def unused_options
-    Options.create(super)
+    Options.coerce(super)
   end
 
   def cxxstdlib
diff --git a/Library/Homebrew/test/test_build_options.rb b/Library/Homebrew/test/test_build_options.rb
index 7d2c952d9..a0c52da81 100644
--- a/Library/Homebrew/test/test_build_options.rb
+++ b/Library/Homebrew/test/test_build_options.rb
@@ -4,8 +4,8 @@ require "options"
 
 class BuildOptionsTests < Homebrew::TestCase
   def setup
-    args = Options.create(%w(--with-foo --with-bar --without-qux))
-    opts = Options.create(%w(--with-foo --with-bar --without-baz --without-qux))
+    args = Options.coerce(%w(--with-foo --with-bar --without-qux))
+    opts = Options.coerce(%w(--with-foo --with-bar --without-baz --without-qux))
     @build = BuildOptions.new(args, opts)
   end
 
diff --git a/Library/Homebrew/test/test_options.rb b/Library/Homebrew/test/test_options.rb
index 264ef772a..250360a30 100644
--- a/Library/Homebrew/test/test_options.rb
+++ b/Library/Homebrew/test/test_options.rb
@@ -132,18 +132,22 @@ class OptionsTests < Homebrew::TestCase
     assert_equal [foo, bar, baz].sort, (@options | options).to_a.sort
   end
 
-  def test_create_with_array
+  def test_coerce_with_array
     array = %w{--foo --bar}
     option1 = Option.new("foo")
     option2 = Option.new("bar")
-    assert_equal [option1, option2].sort, Options.create(array).to_a.sort
+    assert_equal [option1, option2].sort, Options.coerce(array).to_a.sort
   end
 
-  def test_create_splits_multiple_switches_with_single_dash
+  def test_coerce_raises_for_inappropriate_types
+    assert_raises(TypeError) { Options.coerce(1) }
+  end
+
+  def test_coerce_splits_multiple_switches_with_single_dash
     array = %w{-vd}
     verbose = Option.new("-v")
     debug = Option.new("-d")
-    assert_equal [verbose, debug].sort, Options.create(array).to_a.sort
+    assert_equal [verbose, debug].sort, Options.coerce(array).to_a.sort
   end
 
   def test_copies_do_not_share_underlying_collection