Removes unused vars

Signed-off-by: José Valim <jose.valim@gmail.com>

5 files changed, 10 insertions, 11 deletions

diff --git a/activesupport/lib/active_support/core_ext/kernel/requires.rb b/activesupport/lib/active_support/core_ext/kernel/requires.rb
index d2238898d6..3bf46271d7 100644
--- a/activesupport/lib/active_support/core_ext/kernel/requires.rb
+++ b/activesupport/lib/active_support/core_ext/kernel/requires.rb
@@ -11,13 +11,13 @@ module Kernel
         # 1. Requiring the module is unsuccessful, maybe it's a gem and nobody required rubygems yet. Try.
         begin
           require 'rubygems'
-        rescue LoadError => rubygems_not_installed
+        rescue LoadError # => rubygems_not_installed
           raise cannot_require
         end
         # 2. Rubygems is installed and loaded. Try to load the library again
         begin
           require library_name
-        rescue LoadError => gem_not_installed
+        rescue LoadError # => gem_not_installed
           raise cannot_require
         end
       end
diff --git a/activesupport/lib/active_support/dependencies.rb b/activesupport/lib/active_support/dependencies.rb
index 7d5143ba37..9a6da38b1c 100644
--- a/activesupport/lib/active_support/dependencies.rb
+++ b/activesupport/lib/active_support/dependencies.rb
@@ -592,7 +592,7 @@ module ActiveSupport #:nodoc:
     # Convert the provided const desc to a qualified constant name (as a string).
     # A module, class, symbol, or string may be provided.
     def to_constant_name(desc) #:nodoc:
-      name = case desc
+      case desc
         when String then desc.sub(/^::/, '')
         when Symbol then desc.to_s
         when Module
diff --git a/activesupport/lib/active_support/json/backends/yaml.rb b/activesupport/lib/active_support/json/backends/yaml.rb
index 215b3d6f90..4cb9d01077 100644
--- a/activesupport/lib/active_support/json/backends/yaml.rb
+++ b/activesupport/lib/active_support/json/backends/yaml.rb
@@ -13,7 +13,7 @@ module ActiveSupport
             json = json.read
           end
           YAML.load(convert_json_to_yaml(json))
-        rescue ArgumentError => e
+        rescue ArgumentError
           raise ParseError, "Invalid JSON string"
         end
 
diff --git a/activesupport/lib/active_support/multibyte/unicode.rb b/activesupport/lib/active_support/multibyte/unicode.rb
index 11c72d873b..3d80f5fa58 100644
--- a/activesupport/lib/active_support/multibyte/unicode.rb
+++ b/activesupport/lib/active_support/multibyte/unicode.rb
@@ -99,15 +99,15 @@ module ActiveSupport
           current = codepoints[pos]
           if (
               # CR X LF
-              one = ( previous == database.boundary[:cr] and current == database.boundary[:lf] ) or
+              ( previous == database.boundary[:cr] and current == database.boundary[:lf] ) or
               # L X (L|V|LV|LVT)
-              two = ( database.boundary[:l] === previous and in_char_class?(current, [:l,:v,:lv,:lvt]) ) or
+              ( database.boundary[:l] === previous and in_char_class?(current, [:l,:v,:lv,:lvt]) ) or
               # (LV|V) X (V|T)
-              three = ( in_char_class?(previous, [:lv,:v]) and in_char_class?(current, [:v,:t]) ) or
+              ( in_char_class?(previous, [:lv,:v]) and in_char_class?(current, [:v,:t]) ) or
               # (LVT|T) X (T)
-              four = ( in_char_class?(previous, [:lvt,:t]) and database.boundary[:t] === current ) or
+              ( in_char_class?(previous, [:lvt,:t]) and database.boundary[:t] === current ) or
               # X Extend
-              five = (database.boundary[:extend] === current)
+              (database.boundary[:extend] === current)
             )
           else
             unpacked << codepoints[marker..pos-1]
@@ -238,7 +238,6 @@ module ActiveSupport
         bytes.each_index do |i|
 
           byte          = bytes[i]
-          is_ascii      = byte < 128
           is_cont       = byte > 127 && byte < 192
           is_lead       = byte > 191 && byte < 245
           is_unused     = byte > 240
diff --git a/activesupport/lib/active_support/testing/setup_and_teardown.rb b/activesupport/lib/active_support/testing/setup_and_teardown.rb
index d8942c3974..b2d9ddfeb7 100644
--- a/activesupport/lib/active_support/testing/setup_and_teardown.rb
+++ b/activesupport/lib/active_support/testing/setup_and_teardown.rb
@@ -96,7 +96,7 @@ module ActiveSupport
         protected
 
         def retrieve_mocha_counter(result) #:nodoc:
-          if using_mocha = respond_to?(:mocha_verify)
+          if respond_to?(:mocha_verify) # using mocha
             if defined?(Mocha::TestCaseAdapter::AssertionCounter)
               Mocha::TestCaseAdapter::AssertionCounter.new(result)
             else