Loosen help page parameter constraints for category

app/controllers/help_controller.rb

@@ -4,7 +4,7 @@ class HelpController < ApplicationController
   def show
     category = clean_path_info(path_params[:category])
-    file = clean_path_info(path_params[:file])
+    file = path_params[:file]
     respond_to do |format|
       format.any(:markdown, :md, :html) do

config/routes.rb

@@ -39,7 +39,7 @@ Gitlab::Application.routes.draw do
   # Help
   get 'help'                  => 'help#index'
-  get 'help/:category/:file'  => 'help#show', as: :help_page, constraints: { category: /[^\.]+/, file: /[^\.]+/ }
+  get 'help/:category/:file'  => 'help#show', as: :help_page, constraints: { category: /.*/, file: /[^\/\.]+/ }
   get 'help/shortcuts'
   get 'help/ui'               => 'help#ui'

spec/routing/routing_spec.rb

@@ -65,7 +65,7 @@ describe SnippetsController, "routing" do
 end
 #            help GET /help(.:format)                 help#index
-#       help_page GET /help/:category/:file(.:format) help#show {:category=>/[^\.]+/, :file=>/[^\.]+/}
+#       help_page GET /help/:category/:file(.:format) help#show {:category=>/.*/, :file=>/[^\/\.]+/}
 #  help_shortcuts GET /help/shortcuts(.:format)       help#shortcuts
 #         help_ui GET /help/ui(.:format)              help#ui
 describe HelpController, "routing" do