- From: Laura Carlson <laura.lee.carlson@gmail.com>
- Date: Mon, 27 Aug 2012 15:37:04 -0500
- To: Sam Ruby <rubys@intertwingly.net>
- Cc: Henri Sivonen <hsivonen@iki.fi>, "public-html@w3.org WG" <public-html@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>, "Edward O'Connor" <eoconnor@apple.com>
Hi Sam, > And to Laura (and others): Does the presence of at least one warning or > information message in the results when validating pages which are properly > marked up with generator-unknown-alt attributes satisfy your criteria as a > "teachable moment", or do you require that such pages be marked as invalid? I think that it would take three things: 1. A warning for "generator-unknown-alt"/"incomplete" on the results page by default; and 2. Info in the the spec that all validators are expected to a warn for "generator-unknown-alt"/"incomplete" possibly with screenshots in the spec to help validator developers get it right; and 3. A link for "generator-unknown-alt"/"incomplete" warnings that points to additional info so that people who want to fix "generator-unknown-alt"/"incomplete" have guidance on how to do so. (This could be used for missing alt too for that matter.) At one time Mike was working on a pilot validator implementation [1] that triggered text "expected to reference additional guidance on text alternatives in WCAG support materials". This would directly help facilitate more perceivable content. It would hold a real opportunity for validators to help educate by directly pointing good authors who encountered "generator-unknown-alt"/"incomplete", to advice on how to fix the problem. Currently, no teachable moment exists for authors who use tools that insert "generator-unknown-alt"/"incomplete". Without a mockup of the UI it is difficult to fully commit but I think this could work. Thanks for asking. Best Regards, Laura [1] http://lists.w3.org/Archives/Public/public-html-a11y/2010Apr/0165.html -- Laura L. Carlson
Received on Monday, 27 August 2012 20:37:34 UTC