- From: <bugzilla@jessica.w3.org>
- Date: Fri, 29 Mar 2013 17:24:15 +0000
- To: public-html-admin@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=21436 Bug ID: 21436 Summary: @longdesc should, @src, be a valid *non-empty* URL. 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 PROPOSAL: Update the definition of the content of the @longdesc attribute to match the requirements for the @src attribute. CURRENT SITUATION: Referring to its definition in HTML5,[1] the HTML Image Description Extension spec currently says that the content of the @longdesc attribute MUST be: ]] a valid URL potentially surrounded by spaces [[ This definition, however, is too loose. For contrast, the definition of the img element’s @src attribute pointes to HTML5’s definition of 'a validt non-empty URL'.[2] Thus, @src is required to be: [3] ]] a valid non-empty URL potentially surrounded by spaces [[ WHY CURRENT SITUATION IS DANGEROUS: The consequence of the above is that the HTML5 validator whines if the @src attribute only contains the empty string (including the empty string surrounded by spaces) - which is nice. But, conversely, if the @longdesc attribute contains the empty string (potentially surrounded by spaces), the validator does (currently) not whine.[4] It is also worth mentioning that in the infamous Longdesc Lottery, then "is blank" (followed by "is not a valid URL"), is the first mentioned example of longdesc misuse.[5] When possible, the HTML Image Description Extension spec should demonstrate that it tries to avoid the issues that the Longdesc Lottery article takes up. [1] http://www.w3.org/html/wg/drafts/html/master/infrastructure.html#valid-url-potentially-surrounded-by-spaces [2] http://www.w3.org/html/wg/drafts/html/master/infrastructure.html#valid-non-empty-url [3] http://www.w3.org/TR/html5/embedded-content-0.html#attr-img-src [4] http://tinyurl.com/emptyLongdesc [5] http://blog.whatwg.org/the-longdesc-lottery -- You are receiving this mail because: You are on the CC list for the bug.
Received on Friday, 29 March 2013 17:24:17 UTC