ruby-core

Issue #8352 has been updated by knu (Akinori MUSHA).


Addressable::URI (of the addressable gem) properly preserves sequences of slashes in a path, so it is a workaround to use it instead.

I've confirmed that `net/url` of Go, `URI` of Perl, `urlparse.urljoin` of Python2 or `java.net.URL` of Java never does this kind of unwanted normalization.

A single exception I could find, however, was `urllib.parse` of Python3. (!)

```
% python3
Python 3.6.3 (default, Nov  4 2017, 01:15:26)
[GCC 4.2.1 Compatible FreeBSD Clang 3.8.0 (tags/RELEASE_380/final 262564)] on freebsd11
Type "help", "copyright", "credits" or "license" for more information.
>>> from urllib.parse import urljoin
>>> urljoin('http://example.com/foo//bar/baz', '.')
'http://example.com/foo/bar/'
```

I'm not sure if this is an intentional change from Python2, but I believe any slash in the path part should be retained.

----------------------------------------
Bug #8352: URI squeezes a sequence of slashes in merging paths when it shouldn't
https://bugs.ruby-lang.org/issues/8352#change-67822

* Author: knu (Akinori MUSHA)
* Status: Open
* Priority: Normal
* Assignee: akira (akira yamada)
* Target version: 
* ruby -v: ruby 2.1.0dev (2013-05-01 trunk 40540) [x86_64-freebsd9]
* Backport: 
----------------------------------------
RFC 2396 (on which the library currently is based) or RFC 3986 says nothing about a sequence of slashes in the path part except for parsing rules when a URI (path) starts with two slashes.

It should be perfectly valid to have a slash right after another, and there is no reason to "normalize" a sequence of slashes into a single slash, which uri actually does in merging paths:

~~~
URI.parse('http://example.com/foo//bar/')+'.'
=> #<URI::HTTP:0x0000080303d2b0 URL:http://example.com/foo/bar/>
~~~

Fixing this may be as easy as changing the regexp in URI::Generic#split_path from %r{/+} to %r{/}, but I wonder how the impact of incompatibility it may introduce would be.



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