Avoid extra array allocations

Library/Homebrew/options.rb

@@ -106,13 +106,16 @@ class Options
     when self then arg
     when Option then new << arg
     when Array
-      opts = arg.map do |_arg|
-        case _arg
-        when /^-[^-]+$/ then _arg[1..-1].split(//)
-        else _arg
+      opts = new
+      arg.each do |a|
+        case a
+        when /^-[^-]+$/
+          a[1..-1].split(//).each { |o| opts << Option.new(o) }
+        else
+          opts << Option.new(a)
         end
-      end.flatten
-      new(opts.map { |o| Option.new(o) })
+      end
+      opts
     else
       raise TypeError, "Cannot convert #{arg.inspect} to Options"
     end

Library/Homebrew/version.rb

@@ -97,7 +97,7 @@ class Version
   protected
 
   def to_a
-    @array ||= @version.scan(/\d+|[a-zA-Z]+/).map { |e| VersionElement.new(e) }
+    @array ||= @version.scan(/\d+|[a-zA-Z]+/).map! { |e| VersionElement.new(e) }
   end
 
   def self.parse spec