Arturo Bernal created JSPWIKI-1320:
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Summary: The RSS feed of a page diffs against a version that does
not exist when a version was deleted
Key: JSPWIKI-1320
URL: https://issues.apache.org/jira/browse/JSPWIKI-1320
Project: JSPWiki
Issue Type: Bug
Reporter: Arturo Bernal
The RSS feed of a page describes a change with a diff between the version and
the one before it. DefaultRSSGenerator.getPageDescription takes the previous
version as version - 1, as its FIXME says ("Will fail when non-contiguous
versions").
Measured on the current master with VersioningFileProvider and the
SvnStyleDiffProvider: I saved a page three times ("line one", then two lines,
then three lines), deleted version 2 with PageManager.deleteVersion, and
generated the RSS of the page for version 3. The description of the entry shows
all three lines as added, although version 3 differs from the remaining version
1 only by the lines "line two" and "line three". Reading version 2 fails with a
ProviderException, which is logged at ERROR level twice, and the text of the
missing version is taken as empty.
Expected: the diff is made against the latest version that still exists before
the one described.
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