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https://issues.apache.org/jira/browse/FOP-2293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13964218#comment-13964218
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Seifeddine Dridi commented on FOP-2293:
---------------------------------------

{quote}
What do you mean by this? When it restarts at a too short/long node because no 
feasible break has been found, or when it restarts the whole page layout 
because changing IPD has been detected?
{quote}

Page-restart due to changing IPD (see bug_page_ipd_change.fo). This is probably 
related to space resolution, since FOP expects the restarting position to be 
instance of SpaceHandlingBreakPosition. I've been able to suppress this issue 
by adding a BreakElement at the end of the Knuth list, but I'm not quite sure 
if it's right way to deal with this.

> Whitespace management extension
> -------------------------------
>
>                 Key: FOP-2293
>                 URL: https://issues.apache.org/jira/browse/FOP-2293
>             Project: Fop
>          Issue Type: New Feature
>          Components: general
>    Affects Versions: trunk
>            Reporter: Seifeddine Dridi
>            Priority: Minor
>              Labels: XSL-FO
>             Fix For: trunk
>
>         Attachments: FO_multi-switch_best-fit_ext_rev10.patch, 
> FO_multi-switch_best-fit_ext_rev11.patch, 
> FO_multi-switch_best-fit_ext_rev12.patch, 
> FO_multi-switch_best-fit_ext_rev2.patch, 
> FO_multi-switch_best-fit_ext_rev3.patch, 
> FO_multi-switch_best-fit_ext_rev4.patch, 
> FO_multi-switch_best-fit_ext_rev5.patch, 
> FO_multi-switch_best-fit_ext_rev6.patch, 
> FO_multi-switch_best-fit_ext_rev7.patch, 
> FO_multi-switch_best-fit_ext_rev8.patch, 
> FO_multi-switch_best-fit_ext_rev9.patch, FO_multi-switch_test.fo, 
> FO_multi-switch_with_best-fit_extension.patch, bestfit.fo, 
> bug_page_ipd_change.fo, doc.pdf, empty-last-page.fo, 
> multi-switch-testcases.zip, multi-switch_bestfit.fo, 
> multiple-feasible-nodes.fo, patch-rev1.1.patch, patch-rev1.patch, 
> patch-rev2.patch, patch.patch, rev11_bug.fo, two-valid-variants.fo
>
>
> I have been working on an extension for whitespace management, similar to 
> what's described here: 
> http://wiki.apache.org/xmlgraphics-fop/WhitespaceManagement
> The logic of the extension is very simple: the user defines a set of 
> alternatives that he wishes to insert at the end of a page, then if there is 
> enough space left, FOP will pick the alternative that best matches the user's 
> selection criteria (first fit, smallest fit, biggest fit).
> This is my first work on FOP and it took me almost 2 months to reach this 
> stage in development. But it's not the end of course, so I'm relying on your 
> feedback to improve it.
> Thank you



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