[Bug 21564] New: Allow ATs/UAs to use heuristics to suppress presentation of erroneous or pointless longdescs

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21564

            Bug ID: 21564
           Summary: Allow ATs/UAs to use heuristics to suppress
                    presentation of erroneous or pointless longdescs
    Classification: Unclassified
           Product: HTML WG
           Version: unspecified
          Hardware: PC
               URL: http://www.w3.org/TR/2013/WD-html-longdesc-20130312/#l
                    ongdesc
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HTML Image Description Extension
          Assignee: chaals@yandex-team.ru
          Reporter: xn--mlform-iua@xn--mlform-iua.no
        QA Contact: public-html-bugzilla@w3.org
                CC: public-html-admin@w3.org,
                    xn--mlform-iua@xn--mlform-iua.no

Let the spec say that implementations MAY use heuristics to suppress
announcing/presenting/making available the longdesc URL to the user. (But add
that this does not apply when the content is text *and* the UA/AT makes use of
the MAY option to present text to to the user.)

MOTIVATION: 

* To avoid that users are encouraged to check obviously
  erroneous or pointless URLs.
* To avoid that users’ trust in the longdesc attribute
  is affected negatively

WHEN IT APPLIES

* I shall not requeset that the spec describes the this in exact detail, but it
seems to me that the circumstances that it would be useful to use heuristics in
order to evaluate the longdesc, are roughly equivalent to the validation
warnings described in bug 21501.

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Received on Wednesday, 3 April 2013 11:10:40 UTC