R-alpha: R 0.50.a1 && gdb support

Can we have gdb support?  (I don't use xxgdb.)

Perhaps in the wrapper one could add something like

*************************************************************
if [ "$1" = "-gdb" ]
then
	shift
	DEBUGGER=gdb
fi
*************************************************************

and at the end have

*************************************************************
if [ "$DEBUGGER" = "gdb" ]
then
    exec gdb $RHOME/bin/R.binary $*
else    
    exec $DEBUGGER $RHOME/bin/R.binary -v 4 $*
fi    
*************************************************************

Or is there a way to pass command line options for the program through
gdb?

Thanks,
-k
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