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Subject: Re: [docbook-apps] programlisting page breaks

Ok, in that case, the solution is to make keep-together="auto" in 
example.properties the default since example/programlisting is a fairly 
common construct. I don't see that keep-together="always" is a problem 
with figures or equations. Does that sound reasonable?


On 03/09/2011 12:04 PM, Bob Stayton wrote:
> Hi David,
> One clarification: tables are not included. The 'table.properties' 
> attribute-set uses 'formal.object.properties' but then overrides 
> keep-together.within-column to set it to 'auto'. So we are talking 
> about example, figure, and equation  (and not their informal 
> counterparts, nor programlisting).
> Bob Stayton
> Sagehill Enterprises
> bobs@sagehill.net
> ----- Original Message ----- From: "David Cramer" <david@thingbag.net>
> To: <docbook-apps@lists.oasis-open.org>
> Sent: Wednesday, March 09, 2011 6:43 AM
> Subject: Re: [docbook-apps] programlisting page breaks
>> So I hit up against this problem and found that, indeed, the 
>> keep-together being set to always for formal.object.properties is the 
>> cause. To fix it, I've added the following to my customization layer:
>> <xsl:attribute-set name="formal.object.properties">
>> <xsl:attribute name="keep-together.within-column">auto</xsl:attribute>
>> </xsl:attribute-set>
>> The current behavior is described in Bob's book: 
>> http://www.sagehill.net/docbookxsl/PageBreaking.html
>> However, this seems to be a case where the default behavior violates 
>> the principle of least surprise. Currently, if you process a document 
>> with a table or example that is more than one page long, the results 
>> will be unacceptable/stop-ship (but there's no easy way to make the 
>> fo renderer stop processing the document when this happens). On the 
>> other hand, if we make the default "auto", you might occasionally 
>> have a short table or example that's split across pages when it would 
>> be better if they were kept together, but the result would still be 
>> acceptable. I think it would be better if we set the keep-together 
>> for formal objects to "auto" and then let the user add a PI to set it 
>> to always if necessary.
>> Are there arguments against making keep-together="auto" on formal 
>> objects the default that I'm not aware of?
>> Thanks,
>> David
>> On 02/14/2011 09:55 PM, Richard Hamilton wrote:
>>> David,
>>> Thanks for the information. I'm currently using xep, but a newer 
>>> (1.76 or so, I'm away from my computer right nome and don't remember 
>>> for sure) version of the stylesheets. I'll look at the fo for a 
>>> keep-together.
>>> Thanks
>>> Dick
>>> On Feb 15, 2011, at 11:40, "Cramer, David W 
>>> (David)"<dcramer@motive.com>  wrote:
>>>> Hi Dick,
>>>> It sounds like what would happen if you have a keep-together on a 
>>>> fo:block around the code listing. I'd check for that.
>>>> I also did a quick test with a document that has long code 
>>>> listings: Using XEP and our customization layer which is based on 
>>>> the 1.72.0 xsls, everything is fine. However, using FOP and the 
>>>> 1.76.1 xsls included in the latest version of Oxygen, the long code 
>>>> listings are pretty messed up (even worse than what you describe).
>>>> David
>>>> -----Original Message-----
>>>> From: hamilton@xmlpress.net [mailto:hamilton@xmlpress.net]
>>>> Sent: Monday, February 14, 2011 10:54 AM
>>>> To: docbook-apps@lists.oasis-open.org
>>>> Subject: [docbook-apps] programlisting page breaks
>>>> I ran into a curious behavior with programlistings, and I wonder if 
>>>> anyone knows how to work around it.
>>>> I have some programlistings that are longer than one page and will 
>>>> need to break.
>>>> That's fine, but what's strange is that regardless of where the 
>>>> programlisting would naturally start, there is always a page break 
>>>> before the listing starts.
>>>> Even if the text that precedes the programlisting extends only a 
>>>> few lines down a page, there will be a page break before the 
>>>> programlisting begins. That can lead to there being 2/3 or more of 
>>>> a page blank for no good reason.
>>>> I'll dive into the code at some point, but if anyone has already 
>>>> handled this, I'd appreciate pointers, suggestions, or solutions.
>>>> Best Regards,
>>>> Dick Hamilton
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