XHTML: how to add char entities using DOCTYPE

by **ssb** » Tue Jun 15, 2010 5:45 am

in old xhtmls we can declare smthing like this:

<!DOCTYPE html PUBLIC A B [ <!ENTITY nbsp " "> ] >

where for example
A := "-//W3C//DTD XHTML+RDFa 1.0//EN"
B := "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd"

How to do this properly in xhtml 5 ?

example(s) appreciated, TIA.

by **zcorpan** » Tue Jun 15, 2010 9:54 am

If you want to declare entities in the internal subset, then the simplest way is to omit the FPI and SI:

Code: Select all: <!DOCTYPE html [ <!ENTITY foo "bar"> ]>

by **zcorpan** » Tue Jun 15, 2010 9:56 am

However, a better solution might be to not declare any entities and not use any entities. Don't escape the characters (except < and &), just include them directly. Or if you insist on escaping them, escape them using NCRs.

...or use text/html where you can use entities without declaring them.

by **ssb** » Tue Jun 15, 2010 2:29 pm

zcorpan wrote:
Code: Select all
<!DOCTYPE html [ <!ENTITY foo "bar"> ]>

Thanks. I tried it before, but w3 validator didn't like it...
html5.validator.nu accepts, so I presume it's ok.

by **zcorpan** » Tue Jun 15, 2010 10:53 pm

File a bug on the w3 validator.
http://www.w3.org/Bugs/Public/enter_bug ... =Validator

XHTML: how to add char entities using DOCTYPE

XHTML: how to add char entities using DOCTYPE

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