transformation fails when link/@xrefstyle encountered
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fsteimke commented
In a source document i used link/@xrefstyle by mistake instead of xref/@xrefstyle. Document is valid, but transformation failed with a type error. Reason is that tp:apply-localization-template is called in links.xsl which assumes that the context element is db:xref.
Since DocBook 5.2 allows link/@xrefstyle, it should be supported. If it is empty, it behaves like an xref. If it is not empty, xrefstyle is ignored. A Schematron rule should warn if an link Element which is not empty has an xrefstyle attribute. But in any case transformation must not fail.