diet doesn't allow boolean attributes without value in HTML5

[MartinNowak]

I wanted to get <textarea autofocus></textarea>, so I tried textarea(autofocus) in the diet template but that results in <textarea autofocus="autofocus"></textarea>.

http://www.w3.org/html/wg/drafts/html/master/infrastructure.html#boolean-attribute

[s-ludwig]

I don't find the discussion now, but people have expressed the desire for this behavior for better backwards compatibility with non-HTML 5 conformant browsers.

Maybe a global run time switch makes sense to force the short version?

[MartinNowak]

Couldn't we use the !!! 5 tag for this decision?
It's not very important though.

[nazriel]

@s-ludwig: yeah, can we use doctype to determine it?

Btw, Jade wants to deprecate the !!! tag in favor of doctype tag, are we going to do the same?

[MartinNowak]

If the doctype is html jade knows not to mirror the attribute and uses the terse style (understood by all browsers).

http://jade-lang.com/reference/#booleanattribs

[s-ludwig]

Yes, supporting HTML doctypes < 5 + dropping the mirroring on 5 sounds like a reasonable solution. Then everyone can decide for himself if backwards compatibility with non-HTML 5 browsers is needed or not.

[nazriel]

Fix: #512

[nazriel]

@s-ludwig I guess we can close it now?
Or there is still something to improve?

[s-ludwig]

Right, no I think it should be fine now.

[MartinNowak]

Nice, thanks guys.