These tests fail at the combination luatex + tex fonts.
# XeTeX artifact? works with LuaTeX, explore:
export/doc/(|de/|es/|fr/)EmbeddedObjects_pdf4_systemF
+# WARNING: unknown cross-reference-class `hyperindexformat'! (ignored)
+# ! Undefined control sequence.
+# Text: ...e Ã<8d>ndice alfabético}{75}{section*.10}
+# Text inside 'Index Entries'?
+export/doc/es/(EmbeddedObjects|Math|UserGuide)_(dvi3|pdf5)_texF
+
# iconv fails, if a nomenclature inset contains an uncodable character
export/export/latex/iconv-error-nomenclature_pdf2