SC 4.1.1 - are deprecated tags or attributes a concern?

A question came up after an automated tool identified an issue because the
code was using a deprecated attribute.  Specifically the "language="
attribute was being used in the <script> tag.   (The deprecated attribute
is generated by a component the team is using).

The team pointed out that because the use of only one of the four
techniques in SC 4.1.1 is sufficient for meeting the Success Criterion they
could use Technique 4 - which would allow them to still include the
deprecated attribute in their code and pass SC 4.1.1:
http://www.w3.org/TR/UNDERSTANDING-WCAG20/ensure-compat-parses.html

Is the use of deprecated tags and attributes of any concern to WCAG?
Should there be a Failure (or SC) governing their use?

I did a search and noticed that a similar question came in a while back,
but I could not find an answer from WCAG specifically on the subject.

http://lists.w3.org/Archives/Public/public-comments-wcag20/2008Jan/0029.html


Thanks,


Marc Johlic
Accessibility Consultant
Human Ability & Accessibility Center, IBM Research
                                                                                             
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Received on Monday, 23 May 2011 15:27:37 UTC