+ // we only need to do this if we have deleted or restored a
+ // BiBTeX inset. but there is no other place to do it. one
+ // obvious idea is to try to do it in a copy constructor for
+ // InsetBibTeX, but when that is invoked, the buffer_ member
+ // is not yet set. another idea is to look at the InsetLists
+ // of the various paragraphs. but we'd have to recurse through
+ // the contained insets to make that work. it doesn't seem to
+ // be worth it, as this will not happen that often.
+ buffer().invalidateBibfileCache();
+ buffer().removeBiblioTempFiles();