Saxon

It seems this has nothing to do with saxon:capture.

We only have one test (accumulator-051) that uses accumulator-after() to read the post-descent value of an accumulator during processing of the end tag for the matched element, and the version of that test that is designed for streaming is not actually using streaming, because it fails to declare <xsl:mode streamable="yes"/>.

When I change accumulator-051s to be properly streamable, I get an error: XTDE3420: Cannot call accumulator-after except during the post-descent phase of a streaming template

So I think there is a general problem that the post-descent accumulator value is not available early enough, and that accumulator-after() is either seeing the old value or failing.

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I have fixed WatchManager.endElement() so it runs accumulator actions before other actions. This fixes the corrected test case accumulator-051s. But the test case for this bug is now failing

Error evaluating (.) in xsl:accumulator-rule/@select on line 12 column 90 of acc-phase-end-streaming-sax-capture1.xsl:
  XPDY0002: The context item is absent

The reason is that we need to process the closedown action for the snapshot feed before we process the accumulator phase=end rules.