В Thu, 16 Jan 2014 19:56:16 +0100 "Thomas Schmitt" <scdbac...@gmx.net> пишет:
> Hi, > > > There is no second "--". grub-mkrescue --help tries to say, that > > everything after "--" is simply passed on to xorriso. What is > > confusing, is "or any of the mkisofs options" in previous sentence > > which implies that "--" is not needed. > > It used to work the way which is still in the docs. > > See > http://git.savannah.gnu.org/cgit/grub.git/tree/util/grub-mkrescue.in?id=2.00 > > Its arguments are interpreted by > > while test $# -gt 0 > do > ... > case "$option" in > ... > *) > source="${source} ${option} $@"; break ;; > esac > done > > I.e the unrecognized arguments are added to the list of > source files which is later submitted to the xorriso -as mkisofs > emulation: > > # build iso image > "${xorriso}" -as mkisofs ... ${source} > > Among the xorriso arguments, the "--" has the effect that xorriso > will leave mkisofs emulation and interpret the following arguments > as its native commands and their parameters. > Ah, right, sorry. > > But the new C code obviously thinks too much when seeing > single-dash arguments, which it should handle as xorriso arguments. > And it eats "--". At least if it is the first non-mkrescue argument. > > > So: > > What argument interpretation behavior is grub-mkrescue 2.02 > supposed to show ? > > The one that is currently documented and matches grub-mkrescue.in > of 2.00 ? > > Or the one that is result of using grub-core/gnulib/argp-parse.c ? Yes. It is standard behavior where everything after "--" is interpreted as non-option. You need it to avoid unknown option error from parser. > The latter would need to be explored and documented, then. > I think it is enough to say that everything after first "--" is passed onto xorriso. The fact that second "--" will enter native xorriso is documented in xorriso manual; anyone who would like to make use of this feature probably knows it. _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
