"ark --add --changetofirstpath --dialog ~/foo/*" ignores all the new compression options (e.g. multivolumes). AddToArchive needs to forward them from CreateDialog to CreateJob.
Git commit ec9f3f34e63a2f49dbf2f524ce2f11f699afc21a by Elvis Angelaccio. Committed on 01/01/2017 at 16:28. Pushed by elvisangelaccio into branch 'Applications/16.12'. Use compression options in AddToArchive FIXED-IN: 16.12.1 Differential Revision: D3791 M +6 -4 kerfuffle/addtoarchive.cpp M +1 -0 kerfuffle/addtoarchive.h https://commits.kde.org/ark/ec9f3f34e63a2f49dbf2f524ce2f11f699afc21a