The GNU-specific option -a lets xargs read the arguments from a file
rather than from stdin.
This is particularly convenient when debugging in gdb interactively,
and it might be of more general use.
function old new delta
xargs_main 788 823 +35
packed_usage 31683 31671 -12
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>