https://derpibooru.org/search?_utf8=%E2%9C%93&q=philomena ? https://derpibooru.org/search?q=philomena is equivalent to it. 
constraints(id: /[0-9]+/) do
get '/:id' => 'images#show', :as => 'short_image'
get '/next/:id' => 'images#navigate', :as => 'next_image', :do => 'next'
get '/prev/:id' => 'images#navigate', :as => 'prev_image', :do => 'prev'
get '/find/:id' => 'images#navigate', :as => 'find_image', :do => 'find'
end
constraints(id: /[a-z]+/) do
get ':id', controller: 'forums', action: 'show'
get '/:id' => 'forums#show', as: 'short_forum'
end
constraints(forum_id: /(?!users)(?!pages)(?!thumbs)(?!media)[a-z]+/) do
get '/:forum_id/:id' => 'topics#show', as: 'short_topic'
get '/forums/:forum_id/:id' => 'topics#show'
get '/:forum_id/topics/:id' => 'topics#show'
get '/:forum_id/:id/last' => 'topics#show_last_page'
get '/forums/:forum_id/topics/:id/last' => 'topics#show_last_page'
get '/:forum_id/topics/:id/last' => 'topics#show_last_page'
constraints(page: /[0-9]+/) do
get '/:forum_id/:id/:page' => 'topics#show'
get '/:forum_id/topics/:id/:page' => 'topics#show'
end
get '/:forum_id/:id/post/:post_id' => 'topics#show', as: 'short_topic_post'
get '/:forum_id/topics/:id/post/:post_id' => 'topics#show'
end
get "/:id", ImageController, :show
# get "/:forum_id", ForumController, :show # impossible to do without constraints
get "/:forum_id/:id", TopicController, :show
get "/:forum_id/:id/:page", TopicController, :show
get "/:forum_id/:id/post/:post_id", TopicController, :show
/dis anymore to get the General Discussion forum. You have to go to /forums/dis now.) /:image_id/tag_changes did not exist, and were always pointed to /images/:image_id/tag_changes. The same thing applies here. /:id as the canonical route. 
ts OR fs OR ry OR rd OR aj OR pp with random, you will get M6 images before any other). octavia melody, anthro to my complex watchlist and it did not change the destination. oc:minty spots didn't change it either. What makes 1815943 so special in my case? What is it for everyone else? What would happen if I removed all watched terms on that particular image from my watchlist? 
fetch. 
[+test+]! → test! If you do not specify a field to search over, the search engine will search for posts with a body that is similar to the query's word stems. For example, posts containing the words winged humanization, wings, and spread wings would all be found by a search for wing, but sewing would not be.
| Field Selector | Type | Description | Example |
|---|---|---|---|
author | Literal | Matches the author of this post. Anonymous authors will never match this term. | author:Joey |
body | Full Text | Matches the body of this post. This is the default field. | body:test |
created_at | Date/Time Range | Matches the creation time of this post. | created_at:2015 |
id | Numeric Range | Matches the numeric surrogate key for this post. | id:1000000 |
my | Meta | my:posts matches posts you have posted if you are signed in. | my:posts |
subject | Full Text | Matches the title of the topic. | subject:time wasting thread |
topic_id | Literal | Matches the numeric surrogate key for the topic this post belongs to. | topic_id:7000 |
topic_position | Numeric Range | Matches the offset from the beginning of the topic of this post. Positions begin at 0. | topic_position:0 |
updated_at | Date/Time Range | Matches the creation or last edit time of this post. | updated_at.gte:2 weeks ago |
user_id | Literal | Matches posts with the specified user_id. Anonymous users will never match this term. | user_id:211190 |