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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.16) Gecko/20080715 Fedora/2.0.0.16-1.fc8 Firefox/2.0.0.16

Description of problem:
msghack does not check if mandatory command line parameters are present. This behavior leads to various tracebacks.



Version-Release number of selected component (if applicable):
gettext-0.16.1-12.fc8

How reproducible:
Always


Steps to Reproduce:
$ msghack -o
Traceback (most recent call last):
  File "/usr/bin/msghack", line 351, in <module>
    output=sys.argv[sys.argv.index("-o")+1]
IndexError: list index out of range
$ msghack --invert
Traceback (most recent call last):
  File "/usr/bin/msghack", line 355, in <module>
    file=sys.argv[sys.argv.index("--invert")+1]
IndexError: list index out of range
$ msghack --master
Traceback (most recent call last):
  File "/usr/bin/msghack", line 371, in <module>
    master=GTMaster(gtfs)
  File "/usr/bin/msghack", line 315, in __init__
    self.createMaster(dicts)
  File "/usr/bin/msghack", line 324, in createMaster
    self._master=dicts[0]
IndexError: list index out of range
$ msghack --empty
Traceback (most recent call last):
  File "/usr/bin/msghack", line 363, in <module>
    file=sys.argv[sys.argv.index("--empty")+1]
IndexError: list index out of range
$ msghack --append
Traceback (most recent call last):
  File "/usr/bin/msghack", line 374, in <module>
    file=sys.argv[sys.argv.index("--append")+1]
IndexError: list index out of range


Actual Results:
The utility exits with a traceback.

Expected Results:
The utility exits without traceback (it can display the usage message).

Additional info: