Allow HTML5 doctype to be printed
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Key: TAP5-1040
URL: https://issues.apache.org/jira/browse/TAP5-1040
Project: Tapestry 5
Issue Type: Improvement
Components: tapestry-core
Affects Versions: 5.1.0.5, 5.2.0
Reporter: Alexander Kiel
Priority: Minor
According to the HTML5 Working Draft [1], the doctype to be used in the case
you are using the HTML syntax is:
<!DOCTYPE HTML> case-insensitive
Unfortunately the class org.apache.tapestry5.dom.DTD doesn't allow doctypes
with empty public and system identifier. It is also not possible to output the
DOCTYPE legacy string <!DOCTYPE HTML SYSTEM "about:legacy-compat">, because
some parser internal to Tapestry tries to resolve the system identifier. The
best thing, I was able to output is the full HTML 4.01 strict doctype:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd";>
It is allowed in HTML5 as obsolete permitted DOCTYPE string, but not desired.
It would be very simple to allow for what empty HTML5 doctype in
org.apache.tapestry5.dom.DTD.
[1]: http://www.w3.org/TR/2010/WD-html5-20100304/
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