scons assumes all elements of sys.argv are != ""

Binary package hint: scons

Ubuntu 8.10
scons 0.98.5-1ubuntu1

It is possible to call SCons and pass an empty element as part of sys.argv (python example):
cd /path/to/sources-using-scons/
python
>>> import subprocess
>>> subprocess.Popen(("scons", ""))

SCons' hand-written parser for the command line now assumes that all elements of sys.argv are != "", resulting in:
IndexError: string index out of range:
  File "/usr/lib/scons/SCons/Script/Main.py", line 1248:
    _exec_main(parser, values)
  File "/usr/lib/scons/SCons/Script/Main.py", line 1213:
    _main(parser)
  File "/usr/lib/scons/SCons/Script/Main.py", line 859:
    if a[0] == '-':

Tested with the Battle for Wesnoth trunk SVN sources (although the bug should be reproducible with all sources using a SCons build system). Note that you need some sources to reproduce the bug, otherwise, SCons just complains about the lack of SConscript etc. and quits.