core file style update

Library/Homebrew/cmd/audit.rb

@@ -374,7 +374,7 @@ class FormulaAuditor
       problem "Description should use \"command-line\" instead of \"#{$1}\""
     end
 
-    if desc =~ %r[^([Aa]n?)\s]
+    if desc =~ /^([Aa]n?)\s/
       problem "Please remove the indefinite article \"#{$1}\" from the beginning of the description"
     end
   end

Library/Homebrew/cmd/doctor.rb

@@ -864,7 +864,7 @@ class Checks
     # https://help.github.com/articles/https-cloning-errors
     `git --version`.chomp =~ /git version ((?:\d+\.?)+)/
 
-    if $1 && Version.new($1) < Version.new("1.7.10") then
+    if $1 && Version.new($1) < Version.new("1.7.10")
       git_upgrade_cmd = Formula["git"].any_version_installed? ? "upgrade" : "install"
 
       <<-EOS.undent

Library/Homebrew/cmd/update.rb

@@ -71,7 +71,8 @@ module Homebrew
         user, repo, oldname = oldname.split("/", 3)
         newname = newname.split("/", 3).last
       else
-        user, repo = "homebrew", "homebrew"
+        user = "homebrew"
+        repo = "homebrew"
       end
 
       next unless (dir = HOMEBREW_CELLAR/oldname).directory? && !dir.subdirs.empty?

Library/Homebrew/exceptions.rb

@@ -121,7 +121,7 @@ end
 class TapPinStatusError < RuntimeError
   attr_reader :name, :pinned
 
-  def initialize name, pinned
+  def initialize(name, pinned)
     @name = name
     @pinned = pinned
 
@@ -297,7 +297,7 @@ class BuildToolsError < RuntimeError
 
     super <<-EOS.undent
       The following #{formula_text}:
-        #{formulae.join(', ')}
+        #{formulae.join(", ")}
       cannot be installed as a #{package_text} and must be built from source.
       #{xcode_text}
     EOS
@@ -343,7 +343,7 @@ class BuildFlagsError < RuntimeError
 
     super <<-EOS.undent
       The following #{flag_text}:
-        #{flags.join(', ')}
+        #{flags.join(", ")}
       #{require_text} building tools, but none are installed.
       Either remove the #{flag_text} to attempt bottle installation,
       #{xcode_text}

Library/Homebrew/extend/ARGV.rb

@@ -212,11 +212,11 @@ module HomebrewArgvExtension
   def collect_build_flags
     build_flags = []
 
-    build_flags << '--HEAD' if build_head?
+    build_flags << "--HEAD" if build_head?
-    build_flags << '--universal' if build_universal?
+    build_flags << "--universal" if build_universal?
-    build_flags << '--32-bit' if build_32_bit?
+    build_flags << "--32-bit" if build_32_bit?
-    build_flags << '--build-bottle' if build_bottle?
+    build_flags << "--build-bottle" if build_bottle?
-    build_flags << '--build-from-source' if build_from_source?
+    build_flags << "--build-from-source" if build_from_source?
 
     build_flags
   end

Library/Homebrew/formula_installer.rb

@@ -160,7 +160,7 @@ class FormulaInstaller
       raise BuildToolsError.new([formula])
     end
 
-    if !ignore_deps?
+    unless ignore_deps?
       deps = compute_dependencies
       check_dependencies_bottled(deps) if pour_bottle?
       install_dependencies(deps)

Library/Homebrew/keg_relocate.rb

@@ -99,7 +99,7 @@ class Keg
 
   def install_name_tool(*args)
     tool = MacOS.install_name_tool
-    system(tool, *args) or raise ErrorDuringExecution.new(tool, args)
+    system(tool, *args) || raise(ErrorDuringExecution.new(tool, args))
   end
 
   # If file is a dylib or bundle itself, look for the dylib named by

Library/Homebrew/test/test_migrator.rb

@@ -5,7 +5,7 @@ require "tab"
 require "keg"
 
 class Formula
-  def set_oldname oldname
+  def set_oldname(oldname)
     @oldname = oldname
   end
 end

Library/Homebrew/test/test_utils.rb

@@ -2,7 +2,6 @@ require "testing_env"
 require "tempfile"
 
 class UtilTests < Homebrew::TestCase
-
   def setup
     @dir = Pathname.new(mktmpdir)
   end