emitting available parsers/formatters; backtrace

This sounds like it is related to option handling, so i'm recording this
as separate sub-thread.

How would i, as a user, list all available parsers or formatters?

$ synopsis -f
Error: option -f requires argument

$  synopsis -f?
Error : no processor '?.Formatter'

$ synopsis -f.
Traceback (most recent call last):
  File "/opt/synopsis/bin/synopsis", line 219, in ?
    main()
  File "/opt/synopsis/bin/synopsis", line 213, in main
    processor = make_processor(sys.argv[1:])
  File "/opt/synopsis/bin/synopsis", line 142, in make_processor
    'verbose' in options)
  File "/opt/synopsis/bin/synopsis", line 28, in __import__
    return import_processor(name)
  File "/opt/synopsis-trunk/lib/python2.4/site-packages/Synopsis/import_processor.py", line 18, in import_processor
    mod = __import__(module)
ValueError: Empty module name

(synopsis is a symlink to synopsis-trunk)