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bug#6252: Emacs does not implement URL (aka "percent") decoding correctl

From: Lars Magne Ingebrigtsen
Subject: bug#6252: Emacs does not implement URL (aka "percent") decoding correctly.
Date: Wed, 21 Sep 2011 22:17:52 +0200
User-agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.50 (gnu/linux)

José A. Romero L. <address@hidden> writes:

> On May 18, 20:14, Xah Lee <address@hidden>  wrote:
>> is there emacs lisp function that decode the url percent encoding?
>> e.g.http://en.wikipedia.org/wiki/Sylvester%E2%80%93Gallai_theorem
>> should become
>> http://en.wikipedia.org/wiki/Sylvester–Gallai_theorem
>> that's a EN DASH (unicode 8211, #o20023, #x2013).
>> I know there's a
>>   (require 'gnus-util)
>>  gnus-url-unhex-string
>> but that just unhex, and generate gibberish if the url contain unicode
>> chars.
> (...)
> Seems that RFC 3986 has not been implemented correctly in Emacs. IMHO
> that is an important hole you have found there. The standard requires
> that all unreserved characters be encoded/decoded as UTF8 bytes. Even
> though the encoding part looks OK (in url-util.el), the decoding does
> not go that last mile to interpret the decoded bytes as UTF-8.

I'm not quite sure I understand what the problem is.  Do you have a test
case that illustrates what url.el does wrong?

(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/

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