Revisiting this: in most cases, we’ve been trying to replicate the
behavior of CSL 0.8 and the CSL 0.8 processor of Zotero 2.0. So it
might indeed better to change update.xsl to set demote-non-dropping-
particle to “sort-only” on cs:citation and cs:bibliography. That said,
I’d like to keep the default of the attribute on “display-and-sort”.