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Feature #14035

Updated by ioggstream (Roberto Polli) almost 3 years ago

### Reproduce 

 execute URI("file:///etc/hosts").to_s  


 ### I expect 

   - URI("file:///etc/hosts").to_s == "file:///etc/hosts" 

   - URI to preserve traditional represent file:// paths in canonical form instead converting it to the minimal one (Eg. see https://tools.ietf.org/html/rfc8089#appendix-B )  

  
 ### I wish 

   - URI to preserve the minimal/traditional form. 

   URI("file:///etc/hosts").to_s == "file:///etc/hosts" 
   URI("file:/etc/hosts").to_s == "file:/etc/hosts" 


 in https://tools.ietf.org/html/rfc3986#section-1.1) 

 ### Instead  

   - URI("file:///etc/hosts").to_s == "file:/etc/hosts" 

   - URI("file:///etc/hosts").host == nil 

 ### Proposal Fix for Ruby 2.4 

 Adopting the convention of an "empty host" instead of no authority when the passed string has the traditional form. 

   - file schema to have a blank/empty "" host   

 suggested in rfc3986 will fix the issue. 

 ``` 
    If the URI scheme defines a default for host, then that default 
    applies when the host subcomponent is undefined or when the 
    registered name is empty (zero length).    For example, the "file" URI 
    scheme is defined so that no authority, an empty host, and 
    "localhost" all mean the end-user's machine, whereas the "http" 
    scheme considers a missing authority or empty host invalid. 
 ``` 
  
 

 This is a proposed implementation. 

 ``` 
 require 'uri/generic' 

 module URI 
   class FILE < Generic 
     def initialize(*args) 
       super(*args) 
       @host = "" if @host.nil? 
     end 
   end 
   @@schemes['FILE'] = FILE 
 end 
 ```

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