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@@ -77,6 +77,17 @@ Page splitting/merging
* make sure conflicting named destinations work possibly test by
including the same file by two paths in a merge
+ Note: original implementation of bookmark preservation for split
+ pages caused a very high performance hit. The problem was
+ introduced in 313ba081265f69ac9a0324f9fe87087c72918191 and reverted
+ in the commit that adds this paragraph. The revert includes marking
+ a few tests cases as $td->EXPECT_FAILURE. When properly coded, the
+ test cases will need to be adjusted to only include the parts of
+ the outlines that are actually copied. The tests in question are
+ "split page with outlines". When implementing properly, ensure that
+ the performance is not adversely affected by timing split-pages on
+ a large file with complex outlines such as the PDF specification.
+
When pruning outlines, keep all outlines in the hierarchy that are
above an outline for a page we care about. If one of the ancestor
outlines points to a non-existent page, clear its dest. If an