Re: Vendor-specific extensions: warnings, not errors

> They are still errors, and authors are still advised not to use them.

Where does the spec say that vendor-specific extensions should result
in errors on validation? (The parsing error section [1] doesn’t,
correct me if I’m wrong.)

How is the “should” in “[a]uthors should avoid vendor-specific
extensions” to be understood if not as an RFC 2119 “should” [2,3], and
how does this “should” then require errors on validation?

And even if that is all fine, what is the precise benefit of this approach?


Thank you,
 Jens.


[1] http://www.w3.org/TR/CSS21/syndata.html#parsing-errors
[2] http://www.w3.org/TR/CSS21/conform.html#defs
[3] http://www.ietf.org/rfc/rfc2119.txt

-- 
Jens O. Meiert
http://meiert.com/en/

Received on Saturday, 26 June 2010 16:43:36 UTC