[pmwiki-users] special characters revealing anchors

[adam overton]

thanks for the explanations
it's much appreciated
a


On 28 Oct 2008, at 8:03 AM, Patrick R. Michaud wrote:

> On Tue, Oct 28, 2008 at 09:42:38AM +0100, Jean-Fabrice [gmail] wrote:
>> 2008/10/28 adam overton <a at plus1plus1plus.org>:
>>> i recently discovered some broken/visible anchors on a user's page.
>>> his use of a special character at the beginning of the anchor seems
>>> to be the culprit, as it causes the anchor to become visible  
>>> (special
>>> characters within a word don't seem to cause problems). here is an
>>> example;
>>>
>>>     [[#àdroite]]
>>
>> afaik, pmwiki respects w3c standards and recommendations while this
>> syntax ([[#àdroite]]) does not.
>> Take a look at http://www.w3.org/TR/REC-html40/types.html#type-name :
>> ID and NAME tokens must begin with a letter ([A-Za-z]) and may be
>> followed by any number of letters, digits ([0-9]), hyphens ("-"),
>> underscores ("_"), colons (":"), and periods (".").
>
> This is correct -- PmWiki follows the w3c standards here, and only
> recognizes A-Za-z, digits, hyphens, underscores, colons, and periods
> in anchors.  Anything else causes PmWiki to not recognize the [[#...]]
> as an anchor.
>
> There has been some discussion of getting PmWiki to automatically fold
> non-ASCII characters into the ASCII set, so that [[#àdroite]] would
> generate "adroite" in the anchor tag, and thus be valid HTML.  But
> this would undoubtedly confuse people because a url ending with
> ...#àdroite would not find the anchor.
>
> It's also possible to redefine the anchor rule so that it
> recognizes non-ASCII characters in anchors and uses them in the
> output; this of course results in invalid HTML if used (at least
> according to the current spec).
>
> Pm

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