[ruby-core:83918] [Ruby trunk Bug#3594] URI class doesn't do file URL's properly.

Issue #3594 has been updated by mame (Yusuke Endoh).


[RFC 8089 (The "file" URI Scheme)](https://tools.ietf.org/html/rfc8089) has been published in 2017.  It says:

```
      file-URI       = file-scheme ":" file-hier-part

      file-scheme    = "file"

      file-hier-part = ( "//" auth-path )
                     / local-path

      auth-path      = [ file-auth ] path-absolute

      local-path     = path-absolute
```

and RFC 3986 says:

```
      path-absolute = "/" [ segment-nz *( "/" segment ) ]
```

So, `"file:/var/lib/libvirt/images/"` does not conform the spec, I think.

The maintainer of lib/uri.rb is Akira Yamada, who seems inactive.  Does anyone want to investigate and fix this issue?

----------------------------------------
Bug #3594: URI class doesn't do file URL's properly.
https://bugs.ruby-lang.org/issues/3594#change-67973

* Author: NeilW (Neil Wilson)
* Status: Assigned
* Priority: Normal
* Assignee: akira (akira yamada)
* Target version: 
* ruby -v: ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux] 
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
=begin
 URI doesn't seem to output file URLs properly where there is an absolute path part.
 
 For example.
 
 require 'uri'
 
 my_url = URI.parse("file:///var/lib/libvirt/images/")
 p my_url.to_s
 
 "file:/var/lib/libvirt/images/"
 
 The double slash '//' should always appear according to the file URL specification.
=end




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