remove warning: assigned but unused variable

7 files changed, 4 insertions, 9 deletions

diff --git a/actionpack/lib/action_controller/caching/fragments.rb b/actionpack/lib/action_controller/caching/fragments.rb
index 0be04b70a1..2bdb23c4d7 100644
--- a/actionpack/lib/action_controller/caching/fragments.rb
+++ b/actionpack/lib/action_controller/caching/fragments.rb
@@ -109,7 +109,6 @@ module ActionController #:nodoc:
       def expire_fragment(key, options = nil)
         return unless cache_configured?
         key = fragment_cache_key(key) unless key.is_a?(Regexp)
-        message = nil
 
         instrument_fragment_cache :expire_fragment, key do
           if key.is_a?(Regexp)
diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb
index 6d0c163a9e..7420a5e7e9 100644
--- a/actionpack/lib/action_controller/metal/http_authentication.rb
+++ b/actionpack/lib/action_controller/metal/http_authentication.rb
@@ -423,7 +423,7 @@ module ActionController
       # Returns an Array of [String, Hash] if a token is present.
       # Returns nil if no token is found.
       def token_and_options(request)
-        if header = request.authorization.to_s[/^Token (.*)/]
+        if request.authorization.to_s[/^Token (.*)/]
           values = Hash[$1.split(',').map do |value|
             value.strip!                      # remove any spaces between commas and values
             key, value = value.split(/\=\"?/) # split key=value pairs
diff --git a/actionpack/lib/action_dispatch/middleware/head.rb b/actionpack/lib/action_dispatch/middleware/head.rb
index 56e2d2f2a8..f1906a3ab3 100644
--- a/actionpack/lib/action_dispatch/middleware/head.rb
+++ b/actionpack/lib/action_dispatch/middleware/head.rb
@@ -8,7 +8,7 @@ module ActionDispatch
       if env["REQUEST_METHOD"] == "HEAD"
         env["REQUEST_METHOD"] = "GET"
         env["rack.methodoverride.original_method"] = "HEAD"
-        status, headers, body = @app.call(env)
+        status, headers, _ = @app.call(env)
         [status, headers, []]
       else
         @app.call(env)
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index 9791ba58e2..aae5752c93 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -207,9 +207,6 @@ module ActionDispatch
                            "*/*;q=0.5"
 
         unless defined? @named_routes_configured
-          # install the named routes in this session instance.
-          klass = singleton_class
-
           # the helpers are made protected by default--we make them public for
           # easier access during testing and troubleshooting.
           @named_routes_configured = true
diff --git a/actionpack/lib/action_view/helpers/debug_helper.rb b/actionpack/lib/action_view/helpers/debug_helper.rb
index cd67851642..c0cc7d347c 100644
--- a/actionpack/lib/action_view/helpers/debug_helper.rb
+++ b/actionpack/lib/action_view/helpers/debug_helper.rb
@@ -30,7 +30,7 @@ module ActionView
         begin
           Marshal::dump(object)
           "<pre class='debug_dump'>#{h(object.to_yaml).gsub("  ", "&nbsp; ")}</pre>".html_safe
-        rescue Exception => e  # errors from Marshal or YAML
+        rescue Exception  # errors from Marshal or YAML
           # Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback
           "<code class='debug_dump'>#{h(object.inspect)}</code>".html_safe
         end
diff --git a/actionpack/lib/action_view/renderer/template_renderer.rb b/actionpack/lib/action_view/renderer/template_renderer.rb
index a09cef8fef..d04c00fd40 100644
--- a/actionpack/lib/action_view/renderer/template_renderer.rb
+++ b/actionpack/lib/action_view/renderer/template_renderer.rb
@@ -64,7 +64,7 @@ module ActionView
           layout =~ /^\// ?
             with_fallbacks { find_template(layout, nil, false, keys) } : find_template(layout, nil, false, keys)
         end
-      rescue ActionView::MissingTemplate => e
+      rescue ActionView::MissingTemplate
         update_details(:formats => nil) do
           raise unless template_exists?(layout)
         end
diff --git a/actionpack/lib/action_view/template/error.rb b/actionpack/lib/action_view/template/error.rb
index d4448a7b33..587e37a84f 100644
--- a/actionpack/lib/action_view/template/error.rb
+++ b/actionpack/lib/action_view/template/error.rb
@@ -31,7 +31,6 @@ module ActionView
     def initialize(paths, path, prefixes, partial, details, *)
       @path = path
       prefixes = Array.wrap(prefixes)
-      display_paths = paths.compact.map{ |p| p.to_s.inspect }.join(", ")
       template_type = if partial
         "partial"
       elsif path =~ /layouts/i