[c]cal command-line processing broken

[Siep Kroonenberg]

Examples:

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~$ ccal --data-file=~/.caldat may

cal 4.0 - Display a monthly or yearly calendar, with optional appointments.

Usages: cal [options] [[1|2|3|...|12] year]
         cal [options] [jan|feb|mar|...|dec] [year]

Options:
  --3[months] Display prev/current/next month
  ....

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~$ ccal 2011

cal 4.0 - Display a monthly or yearly calendar, with optional appointments.

Usages: cal [options] [[1|2|3|...|12] year]
         cal [options] [jan|feb|mar|...|dec] [year]

Options:
  --3[months] Display prev/current/next month
  --a[ppts]=n Display maximum of n (8-50) appointments (24)
  ....

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~$ cal --data-file=$HOME/.caldat
cal: invalid option -- '-'
Usage: cal [general options] [-hjy] [[month] year]
       cal [general options] [-hj] [-m month] [year]
       ncal [general options] [-bhJjpwySM] [-s country_code] [[month] year]
       ncal [general options] [-bhJeoSM] [year]
General options: [-NC3] [-A months] [-B months]
For debug the highlighting: [-H yyyy-mm-dd] [-d yyyy-mm]

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: ccal 4.0-2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Fri May 27 11:39:35 2011
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 LC_CTYPE=en_US.UTF-8
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cal
UpgradeStatus: Upgraded to natty on 2011-05-20 (6 days ago)