diff --git a/lib/awesome_print/core_ext/string.rb b/lib/awesome_print/core_ext/string.rb
index dece9be..ef590f0 100644
--- a/lib/awesome_print/core_ext/string.rb
+++ b/lib/awesome_print/core_ext/string.rb
@@ -17,11 +17,11 @@ class String
   %w(gray red green yellow blue purple cyan white).zip(
   %w(black darkred darkgreen brown navy darkmagenta darkcyan slategray)).each_with_index do |(color, shade), i|
     define_method color do |*html|
-      html[0] ? %Q|<kbd style="color:#{color}">#{self}</kbd>| : "\e[1;#{30+i}m#{self}\e[0m"
+      html[0] ? %Q|<kbd style="color:#{color}">#{self}</kbd>| : "\e[1;#{30 + i}m#{self}\e[0m"
     end
 
     define_method "#{color}ish" do |*html|
-      html[0] ? %Q|<kbd style="color:#{shade}">#{self}</kbd>| : "\e[0;#{30+i}m#{self}\e[0m"
+      html[0] ? %Q|<kbd style="color:#{shade}">#{self}</kbd>| : "\e[0;#{30 + i}m#{self}\e[0m"
     end
   end
 
diff --git a/lib/awesome_print/ext/mongo_mapper.rb b/lib/awesome_print/ext/mongo_mapper.rb
index 6533ced..42d8edb 100644
--- a/lib/awesome_print/ext/mongo_mapper.rb
+++ b/lib/awesome_print/ext/mongo_mapper.rb
@@ -18,7 +18,7 @@ module AwesomePrint
       cast = cast_without_mongo_mapper(object, type)
 
       if defined?(::MongoMapper::Document)
-        if object.is_a?(Class) && (object.ancestors & [ ::MongoMapper::Document, ::MongoMapper::EmbeddedDocument ]).size > 0
+        if object.is_a?(Class) && (object.ancestors & [::MongoMapper::Document, ::MongoMapper::EmbeddedDocument]).size > 0
           cast = :mongo_mapper_class
         elsif object.is_a?(::MongoMapper::Document) || object.is_a?(::MongoMapper::EmbeddedDocument)
           cast = :mongo_mapper_instance
@@ -65,7 +65,7 @@ module AwesomePrint
       return object.inspect if !defined?(::ActiveSupport::OrderedHash)
       return awesome_object(object) if @options[:raw]
 
-      data = object.keys.keys.sort_by{|k| k}.inject(::ActiveSupport::OrderedHash.new) do |hash, name|
+      data = object.keys.keys.sort_by { |k| k }.inject(::ActiveSupport::OrderedHash.new) do |hash, name|
         hash[name] = object[name]
         hash
       end
@@ -93,7 +93,7 @@ module AwesomePrint
       return object.inspect if !defined?(::ActiveSupport::OrderedHash)
       return awesome_object(object) if @options[:raw]
 
-      association = object.class.name.split('::').last.titleize.downcase.sub(/ association$/,'')
+      association = object.class.name.split('::').last.titleize.downcase.sub(/ association$/, '')
       association = "embeds #{association}" if object.embeddable?
       class_name = object.class_name
 
diff --git a/lib/awesome_print/ext/mongoid.rb b/lib/awesome_print/ext/mongoid.rb
index 2610e47..229c943 100644
--- a/lib/awesome_print/ext/mongoid.rb
+++ b/lib/awesome_print/ext/mongoid.rb
@@ -48,7 +48,7 @@ module AwesomePrint
         hash[c[0].to_sym] = c[1]
         hash
       end
-      data = {errors: object.errors, attributes: data} if !object.errors.empty?
+      data = { errors: object.errors, attributes: data } if !object.errors.empty?
       "#{object} #{awesome_hash(data)}"
     end
 
diff --git a/lib/awesome_print/ext/nobrainer.rb b/lib/awesome_print/ext/nobrainer.rb
index a558d8b..9ad37b9 100644
--- a/lib/awesome_print/ext/nobrainer.rb
+++ b/lib/awesome_print/ext/nobrainer.rb
@@ -38,7 +38,7 @@ module AwesomePrint
     #------------------------------------------------------------------------------
     def awesome_nobrainer_document(object)
       data = object.inspectable_attributes.symbolize_keys
-      data = {errors: object.errors, attributes: data} if object.errors.present?
+      data = { errors: object.errors, attributes: data } if object.errors.present?
       "#{object} #{awesome_hash(data)}"
     end
   end
diff --git a/lib/awesome_print/ext/nokogiri.rb b/lib/awesome_print/ext/nokogiri.rb
index 6f72f25..fe7fc9d 100644
--- a/lib/awesome_print/ext/nokogiri.rb
+++ b/lib/awesome_print/ext/nokogiri.rb
@@ -15,7 +15,7 @@ module AwesomePrint
     #------------------------------------------------------------------------------
     def cast_with_nokogiri(object, type)
       cast = cast_without_nokogiri(object, type)
-      if (defined?(::Nokogiri::XML::Node) && object.is_a?(::Nokogiri::XML::Node)) || 
+      if (defined?(::Nokogiri::XML::Node) && object.is_a?(::Nokogiri::XML::Node)) ||
          (defined?(::Nokogiri::XML::NodeSet) && object.is_a?(::Nokogiri::XML::NodeSet))
         cast = :nokogiri_xml_node
       end
diff --git a/lib/awesome_print/ext/sequel.rb b/lib/awesome_print/ext/sequel.rb
index f273d65..9b50f1b 100644
--- a/lib/awesome_print/ext/sequel.rb
+++ b/lib/awesome_print/ext/sequel.rb
@@ -32,7 +32,7 @@ module AwesomePrint
         hash[c[0].to_sym] = c[1]
         hash
       end
-      data = {errors: object.errors, values: data} if !object.errors.empty?
+      data = { errors: object.errors, values: data } if !object.errors.empty?
       "#{object} #{awesome_hash(data)}"
     end
 
@@ -45,7 +45,7 @@ module AwesomePrint
     # Format Sequel Model class.
     #------------------------------------------------------------------------------
     def awesome_sequel_model_class(object)
-      data = object.db_schema.inject({}) {|h, (name,data)| h.merge(name => data[:db_type])}
+      data = object.db_schema.inject({}) { |h, (name, data)| h.merge(name => data[:db_type]) }
       "class #{object} < #{object.superclass} " << awesome_hash(data)
     end
   end
diff --git a/lib/awesome_print/formatter.rb b/lib/awesome_print/formatter.rb
index 7ccc401..2d87b94 100644
--- a/lib/awesome_print/formatter.rb
+++ b/lib/awesome_print/formatter.rb
@@ -11,7 +11,7 @@ module AwesomePrint
 
     attr_reader :inspector, :options
 
-    CORE = [ :array, :bigdecimal, :class, :dir, :file, :hash, :method, :rational, :set, :struct, :unboundmethod ]
+    CORE = [:array, :bigdecimal, :class, :dir, :file, :hash, :method, :rational, :set, :struct, :unboundmethod]
 
     def initialize(inspector)
       @inspector   = inspector
@@ -88,7 +88,7 @@ module AwesomePrint
     end
 
     def awesome_method(m)
-      Formatters::MethodFormatter.new(m, @inspector).format  
+      Formatters::MethodFormatter.new(m, @inspector).format
     end
     alias :awesome_unboundmethod :awesome_method
 
@@ -107,7 +107,7 @@ module AwesomePrint
     # Utility methods.
     #------------------------------------------------------------------------------
     def convert_to_hash(object)
-      if ! object.respond_to?(:to_hash)
+      if !object.respond_to?(:to_hash)
         return nil
       end
 
@@ -116,7 +116,7 @@ module AwesomePrint
       end
 
       hash = object.to_hash
-      if ! hash.respond_to?(:keys) || ! hash.respond_to?('[]')
+      if !hash.respond_to?(:keys) || !hash.respond_to?('[]')
         return nil
       end
 
diff --git a/lib/awesome_print/formatters/array_formatter.rb b/lib/awesome_print/formatters/array_formatter.rb
index 4d31456..4e1d50c 100644
--- a/lib/awesome_print/formatters/array_formatter.rb
+++ b/lib/awesome_print/formatters/array_formatter.rb
@@ -31,7 +31,7 @@ module AwesomePrint
           data = limited(data, width) if should_be_limited?
           "[\n" << data.join(",\n") << "\n#{outdent}]"
         else
-          '[ ' << array.map{ |item| inspector.awesome(item) }.join(', ') << ' ]'
+          '[ ' << array.map { |item| inspector.awesome(item) }.join(', ') << ' ]'
         end
       end
 
@@ -51,7 +51,7 @@ module AwesomePrint
               method_tuple(object.instance_method(name)) rescue nil # Rescue to avoid NameError when the method is not
             end                                                     # available (ex. File.lchmod on Ubuntu 12).
           end
-          tuple || [ name.to_s, '(?)', '?' ]                  # Return WTF default if all the above fails.
+          tuple || [name.to_s, '(?)', '?']                  # Return WTF default if all the above fails.
         end
 
         width = (tuples.size - 1).to_s.size
diff --git a/lib/awesome_print/formatters/base_formatter.rb b/lib/awesome_print/formatters/base_formatter.rb
index ea9066d..05353f8 100644
--- a/lib/awesome_print/formatters/base_formatter.rb
+++ b/lib/awesome_print/formatters/base_formatter.rb
@@ -50,7 +50,7 @@ module AwesomePrint
           tail = head - (limit - 1) % 2
 
           # Add the proper elements to the temp array and format the separator.
-          temp = data[0, head] + [ nil ] + data[-tail, tail]
+          temp = data[0, head] + [nil] + data[-tail, tail]
 
           if is_hash
             temp[head] = "#{indent}#{data[head].strip} .. #{data[data.length - tail - 1].strip}"
@@ -97,7 +97,7 @@ module AwesomePrint
           owner = "#{klass}#{unbound}".gsub('(', ' (')
         end
 
-        [ method.name.to_s, "(#{args.join(', ')})", owner.to_s ]
+        [method.name.to_s, "(#{args.join(', ')})", owner.to_s]
       end
 
       #
diff --git a/lib/awesome_print/formatters/hash_formatter.rb b/lib/awesome_print/formatters/hash_formatter.rb
index 584976d..cf398c8 100644
--- a/lib/awesome_print/formatters/hash_formatter.rb
+++ b/lib/awesome_print/formatters/hash_formatter.rb
@@ -19,11 +19,11 @@ module AwesomePrint
         keys = keys.sort { |a, b| a.to_s <=> b.to_s } if options[:sort_keys]
         data = keys.map do |key|
           plain_single_line do
-            [ inspector.awesome(key), hash[key] ]
+            [inspector.awesome(key), hash[key]]
           end
         end
 
-        width = data.map { |key, | key.size }.max || 0
+        width = data.map { |key, _value| key.size }.max || 0
         width += indentation if options[:indent] > 0
 
         data = data.map do |key, value|
diff --git a/lib/awesome_print/formatters/object_formatter.rb b/lib/awesome_print/formatters/object_formatter.rb
index a5c8823..3ab3429 100644
--- a/lib/awesome_print/formatters/object_formatter.rb
+++ b/lib/awesome_print/formatters/object_formatter.rb
@@ -22,9 +22,9 @@ module AwesomePrint
             object.respond_to?(property) ? :reader : nil
           end
           if accessor
-            [ "attr_#{accessor} :#{property}", var ]
+            ["attr_#{accessor} :#{property}", var]
           else
-            [ var.to_s, var ]
+            [var.to_s, var]
           end
         end
 
@@ -53,7 +53,7 @@ module AwesomePrint
         end
       end
 
-      private 
+      private
 
       def valid_instance_var?(variable_name)
         variable_name.to_s.start_with?('@')
diff --git a/lib/awesome_print/formatters/struct_formatter.rb b/lib/awesome_print/formatters/struct_formatter.rb
index 94710bd..86cee9a 100644
--- a/lib/awesome_print/formatters/struct_formatter.rb
+++ b/lib/awesome_print/formatters/struct_formatter.rb
@@ -22,9 +22,9 @@ module AwesomePrint
             struct.respond_to?(property) ? :reader : nil
           end
           if accessor
-            [ "attr_#{accessor} :#{property}", var ]
+            ["attr_#{accessor} :#{property}", var]
           else
-            [ var.to_s, var ]
+            [var.to_s, var]
           end
         end
 
diff --git a/spec/colors_spec.rb b/spec/colors_spec.rb
index 0a3456c..c0c51ae 100644
--- a/spec/colors_spec.rb
+++ b/spec/colors_spec.rb
@@ -16,7 +16,7 @@ RSpec.describe 'AwesomePrint' do
     before do
       ENV['TERM'] = 'xterm-colors'
       ENV.delete('ANSICON')
-      @arr = [ 1, :two, 'three', [ nil, [ true, false] ] ]
+      @arr = [1, :two, 'three', [nil, [true, false]]]
     end
 
     describe 'default settings (no forced colors)' do
diff --git a/spec/core_ext/logger_spec.rb b/spec/core_ext/logger_spec.rb
index 36ad858..ed2d756 100644
--- a/spec/core_ext/logger_spec.rb
+++ b/spec/core_ext/logger_spec.rb
@@ -15,12 +15,12 @@ RSpec.describe 'AwesomePrint logging extensions' do
       expect(object).to receive(:ai)
       @logger.ap object
     end
-    
+
     describe 'the log level' do
       before do
         AwesomePrint.defaults = {}
       end
-      
+
       it 'should fallback to the default :debug log level' do
         expect(@logger).to receive(:debug)
         @logger.ap(nil)
diff --git a/spec/core_ext/string_spec.rb b/spec/core_ext/string_spec.rb
index ae98354..b7f1b47 100644
--- a/spec/core_ext/string_spec.rb
+++ b/spec/core_ext/string_spec.rb
@@ -1,19 +1,19 @@
 require 'spec_helper'
 
 RSpec.describe 'String extensions' do
-  [ :gray, :red, :green, :yellow, :blue, :purple, :cyan, :white ].each_with_index do |color, i|
+  [:gray, :red, :green, :yellow, :blue, :purple, :cyan, :white].each_with_index do |color, i|
     it "should have #{color} color" do
-      expect(color.to_s.send(color)).to eq("\e[1;#{30+i}m#{color}\e[0m")
+      expect(color.to_s.send(color)).to eq("\e[1;#{30 + i}m#{color}\e[0m")
     end
 
     it "should have #{color}ish color" do
-      expect(color.to_s.send(:"#{color}ish")).to eq("\e[0;#{30+i}m#{color}\e[0m")
+      expect(color.to_s.send(:"#{color}ish")).to eq("\e[0;#{30 + i}m#{color}\e[0m")
     end
   end
 
   it 'should have black and pale colors' do
     expect('black'.send(:black)).to eq('black'.send(:grayish))
-    expect('pale'.send(:pale)).to  eq('pale'.send(:whiteish))
+    expect('pale'.send(:pale)).to eq('pale'.send(:whiteish))
     expect('pale'.send(:pale)).to eq("\e[0;37mpale\e[0m")
     expect('whiteish'.send(:whiteish)).to eq("\e[0;37mwhiteish\e[0m")
   end
diff --git a/spec/ext/action_view_spec.rb b/spec/ext/action_view_spec.rb
index 7dde0da..c772d81 100644
--- a/spec/ext/action_view_spec.rb
+++ b/spec/ext/action_view_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint ActionView extensions', skip: ->{ !ExtVerifier.has_rails? }.call do
+RSpec.describe 'AwesomePrint ActionView extensions', skip: -> { !ExtVerifier.has_rails? }.call do
 
   before do
     @view = ActionView::Base.new
diff --git a/spec/ext/active_record_spec.rb b/spec/ext/active_record_spec.rb
index 585519e..4a1dd17 100644
--- a/spec/ext/active_record_spec.rb
+++ b/spec/ext/active_record_spec.rb
@@ -1,7 +1,7 @@
 require 'spec_helper'
 require 'active_record_helper'
 
-RSpec.describe 'AwesomePrint/ActiveRecord', skip: ->{ !ExtVerifier.has_rails? }.call do
+RSpec.describe 'AwesomePrint/ActiveRecord', skip: -> { !ExtVerifier.has_rails? }.call do
   describe 'ActiveRecord instance, attributes only (default)' do
     before do
       ActiveRecord::Base.default_timezone = :utc
@@ -30,7 +30,7 @@ RSpec.describe 'AwesomePrint/ActiveRecord', skip: ->{ !ExtVerifier.has_rails? }.
     end
 
     it 'display multiple records' do
-      out = @ap.awesome([ @diana, @laura ])
+      out = @ap.awesome([@diana, @laura])
       str = <<-EOS.strip
 [
     [0] #<User:placeholder_id> {
@@ -150,7 +150,7 @@ EOS
     end
 
     it 'display multiple records' do
-      out = @ap.awesome([ @diana, @laura ])
+      out = @ap.awesome([@diana, @laura])
 
       raw_object_string =
         if activerecord_5_0?
diff --git a/spec/ext/active_support_spec.rb b/spec/ext/active_support_spec.rb
index d39fabe..f14299d 100644
--- a/spec/ext/active_support_spec.rb
+++ b/spec/ext/active_support_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint::ActiveSupport', skip: ->{ !ExtVerifier.has_rails? }.call do
+RSpec.describe 'AwesomePrint::ActiveSupport', skip: -> { !ExtVerifier.has_rails? }.call do
   before do
     @ap = AwesomePrint::Inspector.new
   end
diff --git a/spec/ext/mongo_mapper_spec.rb b/spec/ext/mongo_mapper_spec.rb
index 1ca1c44..b9da6f0 100644
--- a/spec/ext/mongo_mapper_spec.rb
+++ b/spec/ext/mongo_mapper_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint/MongoMapper', skip: ->{ !ExtVerifier.has_mongo_mapper? }.call do
+RSpec.describe 'AwesomePrint/MongoMapper', skip: -> { !ExtVerifier.has_mongo_mapper? }.call do
   if ExtVerifier.has_mongo_mapper?
     before :all do
       class MongoUser
@@ -12,8 +12,8 @@ RSpec.describe 'AwesomePrint/MongoMapper', skip: ->{ !ExtVerifier.has_mongo_mapp
     end
 
     after :all do
-      Object.instance_eval{ remove_const :MongoUser }
-      Object.instance_eval{ remove_const :Chamelion }
+      Object.instance_eval { remove_const :MongoUser }
+      Object.instance_eval { remove_const :Chamelion }
     end
   end
 
diff --git a/spec/ext/mongoid_spec.rb b/spec/ext/mongoid_spec.rb
index a37b751..2eb29c8 100644
--- a/spec/ext/mongoid_spec.rb
+++ b/spec/ext/mongoid_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint/Mongoid', skip: ->{ !ExtVerifier.has_mongoid? }.call do
+RSpec.describe 'AwesomePrint/Mongoid', skip: -> { !ExtVerifier.has_mongoid? }.call do
 
   if ExtVerifier.has_mongoid?
     before :all do
@@ -13,8 +13,8 @@ RSpec.describe 'AwesomePrint/Mongoid', skip: ->{ !ExtVerifier.has_mongoid? }.cal
     end
 
     after :all do
-      Object.instance_eval{ remove_const :MongoUser }
-      Object.instance_eval{ remove_const :Chamelion }
+      Object.instance_eval { remove_const :MongoUser }
+      Object.instance_eval { remove_const :Chamelion }
     end
   end
 
@@ -34,7 +34,7 @@ RSpec.describe 'AwesomePrint/Mongoid', skip: ->{ !ExtVerifier.has_mongoid? }.cal
      :last_name => "Capone"
 }
     EOS
-    expect(out).to be_similar_to(str, {skip_bson: true})
+    expect(out).to be_similar_to(str, { skip_bson: true })
   end
 
   it 'should print the class' do
diff --git a/spec/ext/nobrainer_spec.rb b/spec/ext/nobrainer_spec.rb
index a83c5d8..e08c83b 100644
--- a/spec/ext/nobrainer_spec.rb
+++ b/spec/ext/nobrainer_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint/NoBrainer', skip: ->{ !ExtVerifier.has_nobrainer? }.call do
+RSpec.describe 'AwesomePrint/NoBrainer', skip: -> { !ExtVerifier.has_nobrainer? }.call do
 
   if ExtVerifier.has_nobrainer?
     before :all do
@@ -21,7 +21,7 @@ RSpec.describe 'AwesomePrint/NoBrainer', skip: ->{ !ExtVerifier.has_nobrainer? }
     end
 
     after :all do
-      Object.instance_eval{ remove_const :SomeModel }
+      Object.instance_eval { remove_const :SomeModel }
     end
   end
 
diff --git a/spec/ext/nokogiri_spec.rb b/spec/ext/nokogiri_spec.rb
index 00072b9..33aa001 100644
--- a/spec/ext/nokogiri_spec.rb
+++ b/spec/ext/nokogiri_spec.rb
@@ -3,7 +3,7 @@ require 'spec_helper'
 RSpec.describe 'AwesomePrint/Nokogiri' do
   it 'should colorize tags' do
     xml = Nokogiri::XML('<html><body><h1></h1></body></html>')
-    expect(xml.ai).to eq  <<-EOS
+    expect(xml.ai).to eq <<-EOS
 <?xml version=\"1.0\"?>\e[1;32m
 \e[0m<\e[1;36mhtml\e[0m>\e[1;32m
   \e[0m<\e[1;36mbody\e[0m>\e[1;32m
@@ -15,7 +15,7 @@ RSpec.describe 'AwesomePrint/Nokogiri' do
 
   it 'should colorize contents' do
     xml = Nokogiri::XML('<html><body><h1>Hello</h1></body></html>')
-    expect(xml.ai).to eq  <<-EOS
+    expect(xml.ai).to eq <<-EOS
 <?xml version=\"1.0\"?>\e[1;32m
 \e[0m<\e[1;36mhtml\e[0m>\e[1;32m
   \e[0m<\e[1;36mbody\e[0m>\e[1;32m
@@ -27,7 +27,7 @@ RSpec.describe 'AwesomePrint/Nokogiri' do
 
   it 'should colorize class and id' do
     xml = Nokogiri::XML('<html><body><h1><span id="hello" class="world"></span></h1></body></html>')
-    expect(xml.ai).to eq  <<-EOS
+    expect(xml.ai).to eq <<-EOS
 <?xml version=\"1.0\"?>\e[1;32m
 \e[0m<\e[1;36mhtml\e[0m>\e[1;32m
   \e[0m<\e[1;36mbody\e[0m>\e[1;32m
diff --git a/spec/ext/ripple_spec.rb b/spec/ext/ripple_spec.rb
index d69f21e..01eef65 100644
--- a/spec/ext/ripple_spec.rb
+++ b/spec/ext/ripple_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-RSpec.describe 'AwesomePrint/Ripple', skip: ->{ !ExtVerifier.has_ripple? }.call do
+RSpec.describe 'AwesomePrint/Ripple', skip: -> { !ExtVerifier.has_ripple? }.call do
 
   if ExtVerifier.has_ripple?
     before :all do
diff --git a/spec/formats_spec.rb b/spec/formats_spec.rb
index dddb83e..9427b44 100644
--- a/spec/formats_spec.rb
+++ b/spec/formats_spec.rb
@@ -6,7 +6,7 @@ require 'set'
 RSpec.describe 'AwesomePrint' do
   describe 'Array' do
     before do
-      @arr = [ 1, :two, 'three', [ nil, [ true, false] ] ]
+      @arr = [1, :two, 'three', [nil, [true, false]]]
     end
 
     it 'empty array' do
@@ -127,7 +127,7 @@ EOS
   #------------------------------------------------------------------------------
   describe 'Nested Array' do
     before do
-      @arr = [ 1, 2 ]
+      @arr = [1, 2]
       @arr << @arr
     end
 
@@ -384,7 +384,7 @@ EOS
   #------------------------------------------------------------------------------
   describe 'Hash with several keys' do
     before do
-      @hash = {'b' => 'b', :a => 'a', :z => 'z', 'alpha' => 'alpha'}
+      @hash = { 'b' => 'b', :a => 'a', :z => 'z', 'alpha' => 'alpha' }
     end
 
     it 'plain multiline' do
@@ -439,7 +439,7 @@ EOS
     end
 
     it 'nested hash keys should be indented (array of hashes)' do
-      arr = [ { a: 1, bb: 22, ccc: 333}, { 1 => :a, 22 => :bb, 333 => :ccc} ]
+      arr = [{ a: 1, bb: 22, ccc: 333 }, { 1 => :a, 22 => :bb, 333 => :ccc }]
       out = arr.ai(plain: true, indent: -4, sort_keys: true)
       expect(out).to eq <<-EOS.strip
 [
@@ -458,7 +458,7 @@ EOS
     end
 
     it 'nested hash keys should be indented (hash of hashes)' do
-      arr = { first: { a: 1, bb: 22, ccc: 333}, second: { 1 => :a, 22 => :bb, 333 => :ccc} }
+      arr = { first: { a: 1, bb: 22, ccc: 333 }, second: { 1 => :a, 22 => :bb, 333 => :ccc } }
       out = arr.ai(plain: true, indent: -4, sort_keys: true)
       expect(out).to eq <<-EOS.strip
 {
@@ -543,7 +543,7 @@ EOS
   #------------------------------------------------------------------------------
   describe 'Set' do
     before do
-      @arr = [1, :two, 'three' ]
+      @arr = [1, :two, 'three']
       @set = Set.new(@arr)
     end
 
@@ -569,19 +569,19 @@ EOS
       end
     else # Prior to Ruby 1.9 the order of set values is unpredicatble.
       it 'plain multiline' do
-        expect(@set.sort_by{ |x| x.to_s }.ai(plain: true)).to eq(@arr.sort_by{ |x| x.to_s }.ai(plain: true))
+        expect(@set.sort_by { |x| x.to_s }.ai(plain: true)).to eq(@arr.sort_by { |x| x.to_s }.ai(plain: true))
       end
 
       it 'plain multiline indented' do
-        expect(@set.sort_by{ |x| x.to_s }.ai(plain: true, indent: 1)).to eq(@arr.sort_by{ |x| x.to_s }.ai(plain: true, indent: 1))
+        expect(@set.sort_by { |x| x.to_s }.ai(plain: true, indent: 1)).to eq(@arr.sort_by { |x| x.to_s }.ai(plain: true, indent: 1))
       end
 
       it 'plain single line' do
-        expect(@set.sort_by{ |x| x.to_s }.ai(plain: true, multiline: false)).to eq(@arr.sort_by{ |x| x.to_s }.ai(plain: true, multiline: false))
+        expect(@set.sort_by { |x| x.to_s }.ai(plain: true, multiline: false)).to eq(@arr.sort_by { |x| x.to_s }.ai(plain: true, multiline: false))
       end
 
       it 'colored multiline (default)' do
-        expect(@set.sort_by{ |x| x.to_s }.ai).to eq(@arr.sort_by{ |x| x.to_s }.ai)
+        expect(@set.sort_by { |x| x.to_s }.ai).to eq(@arr.sort_by { |x| x.to_s }.ai)
       end
     end
   end
@@ -648,13 +648,13 @@ EOS
   #------------------------------------------------------------------------------
   describe 'Inherited from standard Ruby classes' do
     after do
-      Object.instance_eval{ remove_const :My } if defined?(My)
+      Object.instance_eval { remove_const :My } if defined?(My)
     end
 
     it 'inherited from Array should be displayed as Array' do
       class My < Array; end
 
-      my = My.new([ 1, :two, 'three', [ nil, [ true, false ] ] ])
+      my = My.new([1, :two, 'three', [nil, [true, false]]])
       expect(my.ai(plain: true)).to eq <<-EOS.strip
 [
     [0] 1,
@@ -674,7 +674,7 @@ EOS
     it 'inherited from Hash should be displayed as Hash' do
       class My < Hash; end
 
-      my = My[ { 1 => { sym: { 'str' => { [1, 2, 3] => { { k: :v } => Hash } } } } } ]
+      my = My[{ 1 => { sym: { 'str' => { [1, 2, 3] => { { k: :v } => Hash } } } } }]
       expect(my.ai(plain: true)).to eq <<-EOS.strip
 {
     1 => {
diff --git a/spec/methods_spec.rb b/spec/methods_spec.rb
index 81eb64b..29db921 100644
--- a/spec/methods_spec.rb
+++ b/spec/methods_spec.rb
@@ -2,7 +2,7 @@ require 'spec_helper'
 
 RSpec.describe 'Single method' do
   after do
-    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
+    Object.instance_eval { remove_const :Hello } if defined?(Hello)
   end
 
   it 'plain: should handle a method with no arguments' do
@@ -65,7 +65,7 @@ RSpec.describe 'Single method' do
 
   it 'color: should handle an unbound method' do
     class Hello
-      def world(a,b); end
+      def world(a, b); end
     end
     method = Hello.instance_method(:world)
     if RUBY_VERSION < '1.9.2'
@@ -78,7 +78,7 @@ end
 
 RSpec.describe 'Object methods' do
   after do
-    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
+    Object.instance_eval { remove_const :Hello } if defined?(Hello)
   end
 
   describe 'object.methods' do
@@ -130,7 +130,7 @@ RSpec.describe 'Object methods' do
     it 'no index: should handle object.protected_methods' do
       class Hello
         protected
-        def m3(a,b); end
+        def m3(a, b); end
       end
       if RUBY_VERSION < '1.9.2'
         expect(Hello.new.protected_methods.ai(plain: true, index: false)).to eq("[\n     m3(arg1, arg2) Hello\n]")
@@ -156,7 +156,7 @@ RSpec.describe 'Object methods' do
     it 'no index: should handle object.private_methods' do
       class Hello
         private
-        def m3(a,b); end
+        def m3(a, b); end
       end
       out = Hello.new.private_methods.ai(plain: true).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -182,7 +182,7 @@ RSpec.describe 'Object methods' do
 
     it 'no index: should handle object.singleton_methods' do
       class Hello
-        def self.m3(a,b); end
+        def self.m3(a, b); end
       end
       out = Hello.singleton_methods.ai(plain: true, index: false).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -196,7 +196,7 @@ end
 
 RSpec.describe 'Class methods' do
   after do
-    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
+    Object.instance_eval { remove_const :Hello } if defined?(Hello)
   end
 
   describe 'class.instance_methods' do
@@ -212,7 +212,7 @@ RSpec.describe 'Class methods' do
 
     it 'no index: should handle unbound class.instance_methods' do
       class Hello
-        def m3(a,b); end
+        def m3(a, b); end
       end
       out = Hello.instance_methods.ai(plain: true, index: false).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -236,7 +236,7 @@ RSpec.describe 'Class methods' do
 
     it 'no index: should handle class.public_instance_methods' do
       class Hello
-        def m3(a,b); end
+        def m3(a, b); end
       end
       out = Hello.public_instance_methods.ai(plain: true, index: false).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -262,7 +262,7 @@ RSpec.describe 'Class methods' do
     it 'no index: should handle class.protected_instance_methods' do
       class Hello
         protected
-        def m3(a,b); end
+        def m3(a, b); end
       end
       out = Hello.protected_instance_methods.ai(plain: true, index: false).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -288,7 +288,7 @@ RSpec.describe 'Class methods' do
     it 'no index: should handle class.private_instance_methods' do
       class Hello
         private
-        def m3(a,b); end
+        def m3(a, b); end
       end
       out = Hello.private_instance_methods.ai(plain: true, index: false).split("\n").grep(/m\d/)
       if RUBY_VERSION < '1.9.2'
@@ -307,7 +307,7 @@ if RUBY_VERSION >= '1.9.2'
     end
 
     after do
-      Object.instance_eval{ remove_const :Hello } if defined?(Hello)
+      Object.instance_eval { remove_const :Hello } if defined?(Hello)
     end
 
     it '()' do
@@ -354,8 +354,8 @@ end
 
 RSpec.describe 'Methods arrays' do
   after do
-    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
-    Object.instance_eval{ remove_const :World } if defined?(World)
+    Object.instance_eval { remove_const :Hello } if defined?(Hello)
+    Object.instance_eval { remove_const :World } if defined?(World)
   end
 
   it 'obj1.methods - obj2.methods should be awesome printed' do
@@ -432,11 +432,11 @@ RSpec.describe 'Methods arrays' do
     end
 
     hello = Hello.new
-    expect((hello.send(:his) - hello.send(:her)).sort_by { |x| x.to_s }).to eq([ :him, :his ])
+    expect((hello.send(:his) - hello.send(:her)).sort_by { |x| x.to_s }).to eq([:him, :his])
   end
 
   it 'appending garbage to methods array should not raise error' do
-    arr = 42.methods << [ :wtf ]
+    arr = 42.methods << [:wtf]
     expect { arr.ai(plain: true) }.not_to raise_error
     if RUBY_VERSION < '1.9.2'
       expect(arr.ai(plain: true)).to match(/\s+wtf\(\?\)\s+\?/)      # [ :wtf ].to_s => "wtf"
diff --git a/spec/misc_spec.rb b/spec/misc_spec.rb
index 5606d43..58d5012 100644
--- a/spec/misc_spec.rb
+++ b/spec/misc_spec.rb
@@ -87,7 +87,7 @@ RSpec.describe 'AwesomePrint' do
     end
 
     it 'wraps multiline ap output with <pre> tag with colorized <kbd>' do
-      markup = [ 1, :two, 'three' ]
+      markup = [1, :two, 'three']
       expect(markup.ai(html: true)).to eq <<-EOS.strip_heredoc.strip
         <pre>[
             <kbd style="color:white">[0] </kbd><kbd style="color:blue">1</kbd>,
@@ -98,7 +98,7 @@ RSpec.describe 'AwesomePrint' do
     end
 
     it 'wraps hash ap output with only an outer <pre> tag' do
-      markup = [ { 'hello' => 'world' } ]
+      markup = [{ 'hello' => 'world' }]
       expect(markup.ai(html: true)).to eq <<-EOS.strip_heredoc.strip
         <pre>[
             <kbd style="color:white">[0] </kbd>{
@@ -191,7 +191,7 @@ RSpec.describe 'AwesomePrint' do
       ENV.delete('RAILS_ENV')
       expect(AwesomePrint.console?).to eq(true)
       expect(AwesomePrint.rails_console?).to eq(false)
-      Object.instance_eval{ remove_const :IRB }
+      Object.instance_eval { remove_const :IRB }
     end
 
     it 'should detect Pry' do
@@ -199,7 +199,7 @@ RSpec.describe 'AwesomePrint' do
       ENV.delete('RAILS_ENV')
       expect(AwesomePrint.console?).to eq(true)
       expect(AwesomePrint.rails_console?).to eq(false)
-      Object.instance_eval{ remove_const :Pry }
+      Object.instance_eval { remove_const :Pry }
     end
 
     it 'should detect Rails::Console' do
@@ -207,8 +207,8 @@ RSpec.describe 'AwesomePrint' do
       module Rails; class Console; end; end
       expect(AwesomePrint.console?).to eq(true)
       expect(AwesomePrint.rails_console?).to eq(true)
-      Object.instance_eval{ remove_const :IRB }
-      Object.instance_eval{ remove_const :Rails }
+      Object.instance_eval { remove_const :IRB }
+      Object.instance_eval { remove_const :Rails }
     end
 
     it "should detect ENV['RAILS_ENV']" do
@@ -216,19 +216,19 @@ RSpec.describe 'AwesomePrint' do
       ENV['RAILS_ENV'] = 'development'
       expect(AwesomePrint.console?).to eq(true)
       expect(AwesomePrint.rails_console?).to eq(true)
-      Object.instance_eval{ remove_const :Pry }
+      Object.instance_eval { remove_const :Pry }
     end
 
     it 'should return the actual object when *not* running under console' do
-      expect(capture! { ap([ 1, 2, 3 ]) }).to eq([ 1, 2, 3 ])
+      expect(capture! { ap([1, 2, 3]) }).to eq([1, 2, 3])
       expect(capture! { ap({ a: 1 }) }).to eq({ a: 1 })
     end
 
     it 'should return nil when running under console' do
       class IRB; end
-      expect(capture! { ap([ 1, 2, 3 ]) }).to eq(nil)
+      expect(capture! { ap([1, 2, 3]) }).to eq(nil)
       expect(capture! { ap({ a: 1 }) }).to eq(nil)
-      Object.instance_eval{ remove_const :IRB }
+      Object.instance_eval { remove_const :IRB }
     end
 
     it 'handles NoMethodError on IRB implicit #ai' do
diff --git a/spec/objects_spec.rb b/spec/objects_spec.rb
index 8ea411f..fd5e534 100644
--- a/spec/objects_spec.rb
+++ b/spec/objects_spec.rb
@@ -2,7 +2,7 @@ require 'spec_helper'
 
 RSpec.describe 'Objects' do
   after do
-    Object.instance_eval{ remove_const :Hello } if defined?(Hello)
+    Object.instance_eval { remove_const :Hello } if defined?(Hello)
   end
 
   describe 'Formatting an object' do