Hi, looking at
https://salsa.debian.org/images-team/debian-cd/commit/6112370e0abf29018a5346467aaf27cf7cb8ba91 "Ensure that in all places where we use -J we also use --joliet-long" i wonder whether it is wise to rely on the undocumented double-dash tolerance of xorrisofs and genisoimage. Both manuals have the option with a single dash. As for xorrisofs, you can indeed rely on the effect of an internal function in xorriso/emulators.c : /* Strip surplus dash from known single-dash long options */ int Xorriso_genisofs_strip_dash(... As for genisoimage, you are the expert yourself. Have a nice day :) Thomas
