[whatwg] <map id="">

Benjamin Hawkes-Lewis bhawkeslewis at googlemail.com
Fri Aug 10 10:52:23 PDT 2007

Simon Pieters wrote:

> I don't see any need for it to be case-sensitive for XHTML5. :-)

Correct me if this is incorrect but as far as I can see, according to 
the specs authors have been using, id and name are case-sensitive in 
XHTML 1.x just as in HTML 4.01.

Since HTML5 handles standard HTML, tag soup, and faux-XHTML (i.e. almost 
all public web content), what is the benefit of introducing a backwards 
incompatibility with the XHTML 1.x specifications for the 
application/xhtml+xml serialization, in which any content (the "esoteric 
cases" Hixie mentioned) correctly relying on case sensitivity would break?

It doesn't really help conversion betweens serializations, since any 
conversion process would involve a normalization of text/html id's to 

Are there any application/xhtml+xml pages incorrectly relying on case 
insensitivity to work?

Benjamin Hawkes-Lewis

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