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Re: [css3-break] Limiting break propagation to the fragmented flow

From: Simon Sapin <simon.sapin@exyr.org>
Date: Fri, 01 Mar 2013 08:35:00 +0100
Message-ID: <51305A24.6070508@exyr.org>
To: Alan Stearns <stearns@adobe.com>
CC: "www-style@w3.org" <www-style@w3.org>
Le 28/02/2013 23:34, Alan Stearns a écrit :
> Section 4.1 notes that:
> ---
> Since breaks are only allowed between siblings (1),
> not between a box and its container,
> a Œbreak-before¹ value on a first-child box
> is propagated to its container.
> Likewise a Œbreak-after¹ value on a last-child box
> is propagated to its container.
> ---
> First, the (1) isn't clear to me - I'm assuming it refers to the mention
> of 'siblings' in the Class 1 definition above.

I suggest changing the text to:

"Since <a href=#btw-blocks>Class 1 breaks</a> are only allowed between 
siblings, […]"

> Second, I think there should be one more sentence that notes that this
> propagation stops at the fragmented flow boundary.

Is the flow / flow boundary terminology that of css3-regions? (I need to 
read up on that.)

> If the first child of a
> multicol element has break-before the break does not propagate to the
> column or the multicol element.

I suppose it depends on the type of break. A forced page break *should* 

> And if you have discontiguous elements
> collected in a named flow, a break should not propagate to a container
> outside of the named flow. Perhaps that's covered by the box/container
> terminology, but in that case the break should never propagate to a region
> box, either.

Simon Sapin
Received on Friday, 1 March 2013 07:41:34 UTC

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