3 files changed, 6 insertions, 2 deletions
diff --git a/actionpack/lib/action_controller/metal/http_authentication.rb b/actionpack/lib/action_controller/metal/http_authentication.rb
index 1acc19d74b..2eb7853aa6 100644
--- a/actionpack/lib/action_controller/metal/http_authentication.rb
+++ b/actionpack/lib/action_controller/metal/http_authentication.rb
@@ -96,7 +96,7 @@ module ActionController
       end
 
       def user_name_and_password(request)
-        decode_credentials(request).split(/:/, 2)
+        decode_credentials(request).split(':', 2)
       end
 
       def decode_credentials(request)
diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index 3d2dd2d632..9450be838c 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -174,7 +174,7 @@ module Mime
       end
 
       def parse(accept_header)
-        if accept_header !~ /,/
+        if !accept_header.include?(',')
           accept_header = accept_header.split(PARAMETER_SEPARATOR_REGEXP).first
           parse_trailing_star(accept_header) || [Mime::Type.lookup(accept_header)].compact
         else
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 5de0a0cbc6..6f0b49cf28 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -357,6 +357,10 @@ module ActionDispatch
         #   #  params[:category] = 'rock/classic'
         #   #  params[:title] = 'stairway-to-heaven'
         #
+        # To match a wildcard parameter, it must have a name assigned to it.
+        # Without a variable name to attach the glob parameter to, the route
+        # can't be parsed.
+        #
         # When a pattern points to an internal route, the route's +:action+ and
         # +:controller+ should be set in options or hash shorthand. Examples:
         #