[whatwg] Character/Entity Reference Syntax Support

Lachlan Hunt lachlan.hunt at lachy.id.au
Sat Oct 15 18:32:11 PDT 2005

   I wrote a test page [1] to test the support for the syntax of hex and 
numeric character refernces and entity references using all character 
references defined in HTML4.  It tests each with and without the REFC 
delimiter (;).

It seems that IE doesn't support omitting the REFC for any hex character 
reference and only supports omitting it for ISO-8859-1 entities plus 
&amp, &lt, &gt and &quot from the markup significant category.  IE 
doesn't support &apos either, but it's not defined in HTML4 anyway.

Firefox and Opera support all of them just fine with or without the REFC.

I suspect these results may have some impact on the way you write the 
HTML parsing rules for character references

[1] http://lachy.id.au/dev/markup/tests/html401/charref/syntax

Lachlan Hunt

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