diff --git a/.rubocop.yml b/.rubocop.yml
index e1102b45ce..629f5d86ea 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -6,6 +6,7 @@ AllCops:
   Exclude:
     - '**/templates/**/*'
     - '**/vendor/**/*'
+    - 'actionpack/lib/action_dispatch/journey/parser.rb'
 
 # Prefer &&/|| over and/or.
 Style/AndOr:
diff --git a/actionpack/lib/action_dispatch/journey/parser.rb b/actionpack/lib/action_dispatch/journey/parser.rb
index ee91b11b42..db42b64c4b 100644
--- a/actionpack/lib/action_dispatch/journey/parser.rb
+++ b/actionpack/lib/action_dispatch/journey/parser.rb
@@ -1,198 +1,199 @@
 #
 # DO NOT MODIFY!!!!
-# This file is automatically generated by Racc 1.4.11
+# This file is automatically generated by Racc 1.4.14
 # from Racc grammer file "".
 #
 
-require "racc/parser.rb"
+require 'racc/parser.rb'
+
+# :stopdoc:
 
 require "action_dispatch/journey/parser_extras"
 module ActionDispatch
-  # :stopdoc:
   module Journey
     class Parser < Racc::Parser
-      ##### State transition tables begin ###
+##### State transition tables begin ###
 
-      racc_action_table = [
-          13,    15,    14,     7,    21,    16,     8,    19,    13,    15,
-          14,     7,    17,    16,     8,    13,    15,    14,     7,    24,
-          16,     8,    13,    15,    14,     7,    19,    16,     8 ]
+racc_action_table = [
+    13,    15,    14,     7,    19,    16,     8,    19,    13,    15,
+    14,     7,    17,    16,     8,    13,    15,    14,     7,    21,
+    16,     8,    13,    15,    14,     7,    24,    16,     8 ]
 
-      racc_action_check = [
-           2,     2,     2,     2,    17,     2,     2,     2,     0,     0,
-           0,     0,     1,     0,     0,    19,    19,    19,    19,    20,
-          19,    19,     7,     7,     7,     7,    22,     7,     7 ]
+racc_action_check = [
+     2,     2,     2,     2,    22,     2,     2,     2,    19,    19,
+    19,    19,     1,    19,    19,     7,     7,     7,     7,    17,
+     7,     7,     0,     0,     0,     0,    20,     0,     0 ]
 
-      racc_action_pointer = [
-           6,    12,    -2,   nil,   nil,   nil,   nil,    20,   nil,   nil,
-         nil,   nil,   nil,   nil,   nil,   nil,   nil,     4,   nil,    13,
-          13,   nil,    17,   nil,   nil ]
+racc_action_pointer = [
+    20,    12,    -2,   nil,   nil,   nil,   nil,    13,   nil,   nil,
+   nil,   nil,   nil,   nil,   nil,   nil,   nil,    19,   nil,     6,
+    20,   nil,    -5,   nil,   nil ]
 
-      racc_action_default = [
-         -19,   -19,    -2,    -3,    -4,    -5,    -6,   -19,   -10,   -11,
-         -12,   -13,   -14,   -15,   -16,   -17,   -18,   -19,    -1,   -19,
-         -19,    25,    -8,    -9,    -7 ]
+racc_action_default = [
+   -19,   -19,    -2,    -3,    -4,    -5,    -6,   -19,   -10,   -11,
+   -12,   -13,   -14,   -15,   -16,   -17,   -18,   -19,    -1,   -19,
+   -19,    25,    -8,    -9,    -7 ]
 
-      racc_goto_table = [
-           1,    22,    18,    23,   nil,   nil,   nil,    20 ]
+racc_goto_table = [
+     1,    22,    18,    23,   nil,   nil,   nil,    20 ]
 
-      racc_goto_check = [
-           1,     2,     1,     3,   nil,   nil,   nil,     1 ]
+racc_goto_check = [
+     1,     2,     1,     3,   nil,   nil,   nil,     1 ]
 
-      racc_goto_pointer = [
-         nil,     0,   -18,   -16,   nil,   nil,   nil,   nil,   nil,   nil,
-         nil ]
+racc_goto_pointer = [
+   nil,     0,   -18,   -16,   nil,   nil,   nil,   nil,   nil,   nil,
+   nil ]
 
-      racc_goto_default = [
-         nil,   nil,     2,     3,     4,     5,     6,     9,    10,    11,
-          12 ]
+racc_goto_default = [
+   nil,   nil,     2,     3,     4,     5,     6,     9,    10,    11,
+    12 ]
 
-      racc_reduce_table = [
-        0, 0, :racc_error,
-        2, 11, :_reduce_1,
-        1, 11, :_reduce_2,
-        1, 11, :_reduce_none,
-        1, 12, :_reduce_none,
-        1, 12, :_reduce_none,
-        1, 12, :_reduce_none,
-        3, 15, :_reduce_7,
-        3, 13, :_reduce_8,
-        3, 13, :_reduce_9,
-        1, 16, :_reduce_10,
-        1, 14, :_reduce_none,
-        1, 14, :_reduce_none,
-        1, 14, :_reduce_none,
-        1, 14, :_reduce_none,
-        1, 19, :_reduce_15,
-        1, 17, :_reduce_16,
-        1, 18, :_reduce_17,
-        1, 20, :_reduce_18 ]
+racc_reduce_table = [
+  0, 0, :racc_error,
+  2, 11, :_reduce_1,
+  1, 11, :_reduce_2,
+  1, 11, :_reduce_none,
+  1, 12, :_reduce_none,
+  1, 12, :_reduce_none,
+  1, 12, :_reduce_none,
+  3, 15, :_reduce_7,
+  3, 13, :_reduce_8,
+  3, 13, :_reduce_9,
+  1, 16, :_reduce_10,
+  1, 14, :_reduce_none,
+  1, 14, :_reduce_none,
+  1, 14, :_reduce_none,
+  1, 14, :_reduce_none,
+  1, 19, :_reduce_15,
+  1, 17, :_reduce_16,
+  1, 18, :_reduce_17,
+  1, 20, :_reduce_18 ]
 
-      racc_reduce_n = 19
+racc_reduce_n = 19
 
-      racc_shift_n = 25
+racc_shift_n = 25
 
-      racc_token_table = {
-        false => 0,
-        :error => 1,
-        :SLASH => 2,
-        :LITERAL => 3,
-        :SYMBOL => 4,
-        :LPAREN => 5,
-        :RPAREN => 6,
-        :DOT => 7,
-        :STAR => 8,
-        :OR => 9 }
+racc_token_table = {
+  false => 0,
+  :error => 1,
+  :SLASH => 2,
+  :LITERAL => 3,
+  :SYMBOL => 4,
+  :LPAREN => 5,
+  :RPAREN => 6,
+  :DOT => 7,
+  :STAR => 8,
+  :OR => 9 }
 
-      racc_nt_base = 10
+racc_nt_base = 10
 
-      racc_use_result_var = false
+racc_use_result_var = false
 
-      Racc_arg = [
-        racc_action_table,
-        racc_action_check,
-        racc_action_default,
-        racc_action_pointer,
-        racc_goto_table,
-        racc_goto_check,
-        racc_goto_default,
-        racc_goto_pointer,
-        racc_nt_base,
-        racc_reduce_table,
-        racc_token_table,
-        racc_shift_n,
-        racc_reduce_n,
-        racc_use_result_var ]
+Racc_arg = [
+  racc_action_table,
+  racc_action_check,
+  racc_action_default,
+  racc_action_pointer,
+  racc_goto_table,
+  racc_goto_check,
+  racc_goto_default,
+  racc_goto_pointer,
+  racc_nt_base,
+  racc_reduce_table,
+  racc_token_table,
+  racc_shift_n,
+  racc_reduce_n,
+  racc_use_result_var ]
 
-      Racc_token_to_s_table = [
-        "$end",
-        "error",
-        "SLASH",
-        "LITERAL",
-        "SYMBOL",
-        "LPAREN",
-        "RPAREN",
-        "DOT",
-        "STAR",
-        "OR",
-        "$start",
-        "expressions",
-        "expression",
-        "or",
-        "terminal",
-        "group",
-        "star",
-        "symbol",
-        "literal",
-        "slash",
-        "dot" ]
+Racc_token_to_s_table = [
+  "$end",
+  "error",
+  "SLASH",
+  "LITERAL",
+  "SYMBOL",
+  "LPAREN",
+  "RPAREN",
+  "DOT",
+  "STAR",
+  "OR",
+  "$start",
+  "expressions",
+  "expression",
+  "or",
+  "terminal",
+  "group",
+  "star",
+  "symbol",
+  "literal",
+  "slash",
+  "dot" ]
 
-      Racc_debug_parser = false
+Racc_debug_parser = false
 
-      ##### State transition tables end #####
+##### State transition tables end #####
 
-      # reduce 0 omitted
+# reduce 0 omitted
 
-      def _reduce_1(val, _values)
-        Cat.new(val.first, val.last)
-      end
+def _reduce_1(val, _values)
+ Cat.new(val.first, val.last) 
+end
 
-      def _reduce_2(val, _values)
-        val.first
-      end
+def _reduce_2(val, _values)
+ val.first 
+end
 
-      # reduce 3 omitted
+# reduce 3 omitted
 
-      # reduce 4 omitted
+# reduce 4 omitted
 
-      # reduce 5 omitted
+# reduce 5 omitted
 
-      # reduce 6 omitted
+# reduce 6 omitted
 
-      def _reduce_7(val, _values)
-        Group.new(val[1])
-      end
+def _reduce_7(val, _values)
+ Group.new(val[1]) 
+end
 
-      def _reduce_8(val, _values)
-        Or.new([val.first, val.last])
-      end
+def _reduce_8(val, _values)
+ Or.new([val.first, val.last]) 
+end
 
-      def _reduce_9(val, _values)
-        Or.new([val.first, val.last])
-      end
+def _reduce_9(val, _values)
+ Or.new([val.first, val.last]) 
+end
 
-      def _reduce_10(val, _values)
-        Star.new(Symbol.new(val.last))
-      end
+def _reduce_10(val, _values)
+ Star.new(Symbol.new(val.last)) 
+end
 
-      # reduce 11 omitted
+# reduce 11 omitted
 
-      # reduce 12 omitted
+# reduce 12 omitted
 
-      # reduce 13 omitted
+# reduce 13 omitted
 
-      # reduce 14 omitted
+# reduce 14 omitted
 
-      def _reduce_15(val, _values)
-        Slash.new("/")
-      end
+def _reduce_15(val, _values)
+ Slash.new(val.first) 
+end
 
-      def _reduce_16(val, _values)
-        Symbol.new(val.first)
-      end
+def _reduce_16(val, _values)
+ Symbol.new(val.first) 
+end
 
-      def _reduce_17(val, _values)
-        Literal.new(val.first)
-      end
+def _reduce_17(val, _values)
+ Literal.new(val.first) 
+end
 
-      def _reduce_18(val, _values)
-        Dot.new(val.first)
-      end
+def _reduce_18(val, _values)
+ Dot.new(val.first) 
+end
+
+def _reduce_none(val, _values)
+  val[0]
+end
 
-      def _reduce_none(val, _values)
-        val[0]
-      end
     end   # class Parser
-  end   # module Journey
-  # :startdoc:
-end   # module ActionDispatch
+    end   # module Journey
+  end   # module ActionDispatch
diff --git a/actionpack/lib/action_dispatch/journey/parser.y b/actionpack/lib/action_dispatch/journey/parser.y
index d3f7c4d765..f9b1a7a958 100644
--- a/actionpack/lib/action_dispatch/journey/parser.y
+++ b/actionpack/lib/action_dispatch/journey/parser.y
@@ -30,7 +30,7 @@ rule
     | dot
     ;
   slash
-    : SLASH              { Slash.new('/') }
+    : SLASH              { Slash.new(val.first) }
     ;
   symbol
     : SYMBOL             { Symbol.new(val.first) }
@@ -45,5 +45,6 @@ rule
 end
 
 ---- header
+# :stopdoc:
 
-require 'action_dispatch/journey/parser_extras'
+require "action_dispatch/journey/parser_extras"
diff --git a/actionpack/lib/action_dispatch/journey/scanner.rb b/actionpack/lib/action_dispatch/journey/scanner.rb
index 4b8c8ab063..7dbb39b26d 100644
--- a/actionpack/lib/action_dispatch/journey/scanner.rb
+++ b/actionpack/lib/action_dispatch/journey/scanner.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require "strscan"
 
 module ActionDispatch
@@ -35,22 +36,23 @@ module ActionDispatch
         def scan
           case
             # /
-          when text = @ss.scan(/\//)
-            [:SLASH, text]
+          when @ss.skip(/\//)
+            [:SLASH, "/"]
+          when @ss.skip(/\(/)
+            [:LPAREN, "("]
+          when @ss.skip(/\)/)
+            [:RPAREN, ")"]
+          when @ss.skip(/\|/)
+            [:OR, "|"]
+          when @ss.skip(/\./)
+            [:DOT, "."]
+          when text = @ss.scan(/:\w+/)
+            [:SYMBOL, text]
           when text = @ss.scan(/\*\w+/)
             [:STAR, text]
-          when text = @ss.scan(/(?<!\\)\(/)
-            [:LPAREN, text]
-          when text = @ss.scan(/(?<!\\)\)/)
-            [:RPAREN, text]
-          when text = @ss.scan(/\|/)
-            [:OR, text]
-          when text = @ss.scan(/\./)
-            [:DOT, text]
-          when text = @ss.scan(/(?<!\\):\w+/)
-            [:SYMBOL, text]
-          when text = @ss.scan(/(?:[\w%\-~!$&'*+,;=@]|\\:|\\\(|\\\))+/)
-            [:LITERAL, text.tr('\\', "")]
+          when text = @ss.scan(/(?:[\w%\-~!$&'*+,;=@]|\\[:()])+/)
+            text.tr! "\\", ""
+            [:LITERAL, text]
             # any char
           when text = @ss.scan(/./)
             [:LITERAL, text]