value excerption pattern brainstorming general appeal for issues (was Re: [uf-discuss] Appeal for Issues: Empty spans in value-excerption-pattern)

Tantek Çelik tantek at
Fri Nov 7 10:30:08 PST 2008

On Thu, Nov 6, 2008 at 1:53 AM, Ben Ward <lists at> wrote:
> Hi everyone.
> The value-excerption-pattern is an attempt to fully spec the class="value"
> behaviour from "tel" in hCard, which has since been supported globally in
> some parsers for a while, and has proved somewhat useful. In addition to
> fully spec'ing the behaviour for parsing class="value" elements for visible
> data, I've been working on additional specification to handle inclusion of
> machine-centric data alongside human forms
> (
> It's this machine-centic portion that I'm trying to nail down at the moment,
> since it would provide an in-demand solution for various recurring
> complaints (abbr-pattern dependencies, for example).
> Also, note that recent brainstorming regarding patterns dervice from the
> semantics of the <object> element and value excerption has shown that
> current, in-use browsers (Microsoft Internet  Explorer and Apple's Safari 2)
> do not handle object acceptably for inline content
> (
> So we're definitely stuck with needing to spec this pattern using generic
> mark-up.
> (

I agree, gathering feedback on both existing value excerption pattern
behavior and new value excerption handling brainstorms/proposals, and
resolving issues, is a very important next step in improving nearly
all class-based microformats.

One document organizational point:

We should move all brainstormed/proposed additions to the value
excerption pattern to the brainstorming page:

And then evaluate them all for inclusion in an iteration of the value
excerption pattern itself, rather than evaluate them just one at a

> Since it's been a while, this mail serves to summarise the current state of
> this spec and proposed resolutions to open issues. PLEASE, if you have
> additional issues to raise, add them to the wiki page
> (

Since this is an *addition* to current value excerption behavior, I
think the documentation of the addition should first be moved to:

And then issues documented with the proposal inline there.




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