use uri unescape directly

lib/http_router/node.rb

@@ -66,10 +66,5 @@ def add(matcher)
       @matchers << matcher unless matcher.usable?(@matchers.last)
       @matchers.last
     end
-
-    def unescape(val)
-      val.to_s.gsub!(/((?:%[0-9a-fA-F]{2})+)/n){ [$1.delete('%')].pack('H*') }
-      val
-    end
   end
 end

lib/http_router/node/glob.rb

@@ -6,7 +6,7 @@ def [](request)
         request.params << []
         remaining_parts = request.path.dup
         until remaining_parts.empty?
-          request.params[-1] << unescape(remaining_parts.shift)
+          request.params[-1] << URI.unescape(remaining_parts.shift)
           request.path = remaining_parts
           super(request)
         end

lib/http_router/node/glob_regex.rb

@@ -2,7 +2,7 @@ class HttpRouter
   class Node
     class GlobRegex < SpanningRegex
       def add_params(request)
-        @capturing_indicies.each { |idx| request.params << unescape(match[idx].split('/')) }
+        @capturing_indicies.each { |idx| request.params << URI.unescape(match[idx].split('/')) }
       end
     end
   end

lib/http_router/node/regex.rb

@@ -19,8 +19,8 @@ def [](request)
       end
 
       def add_params(request, match)
-        @splitting_indicies.each { |idx| request.params << unescape(match[idx]).split(/\//) } if @splitting_indicies
-        @capturing_indicies.each { |idx| request.params << unescape(match[idx]) }
+        @splitting_indicies.each { |idx| request.params << URI.unescape(match[idx]).split(/\//) } if @splitting_indicies
+        @capturing_indicies.each { |idx| request.params << URI.unescape(match[idx]) }
       end
 
       def usuable?(other)

lib/http_router/node/variable.rb

@@ -4,7 +4,7 @@ class Variable < Node
       def [](request)
         unless request.path.empty?
           request = request.clone
-          request.params << unescape(request.path.shift)
+          request.params << URI.unescape(request.path.shift)
           super(request)
         end
       end